JP6489764B2 - Information code generation method, information code, information code reading system, and information code utilization system - Google Patents

Description

  The present invention relates to an information code generation method, an information code, an information code reading system, and an information code utilization system.

  At present, Internet shopping and the like are permeating, and the opportunities for users to search for products and the like are increasing. For example, when a product search is performed, generally, a search site is accessed, and a search is performed using the article type, company name, brand name, product name, etc. as keywords in the search site. In such a search site where a keyword search is scheduled, detailed contents and images are registered for each article in a database prepared in advance. If a keyword search is performed, articles matching the keyword are extracted. The images are displayed in a list.

JP 2009-251850 A

  The general keyword search described above is effective to some extent when the specific content of the search target is known, but the search is efficiently performed when the specific content of the search target is not known. There is a problem that it is difficult to do. For example, if the appearance of an article is known, but important search items such as the type and name of the article are unknown, it is difficult to narrow down the number of candidates from a large number of candidates, and the search takes a very long time. It will take.

  On the other hand, a technique such as Patent Document 1 has been proposed as a technique related to search. In this technique, a similar image search is performed using an image of a desired product itself as a key, and corresponding candidates are extracted and displayed in a list. However, with this technology, an image file of a product desired by the user is created in detail on his / her computer, the search site is accessed, and various operations are performed on the search site. Search is possible. In such a method, there is a problem that the usability is poor and the search process is difficult to be performed smoothly.

  The present invention relates to a method for generating an information code, an information code, an information code reading system, and an information code generation method that can more easily specify an image to be searched more accurately and can perform a search process using the image to be searched more smoothly. An object is to provide an information code utilization system.

1st invention is the information code generation method which produces | generates the information code which arranged the cell used as the unit which displays information inside a predetermined code area | region by an information code production | generation apparatus, and displays it on a display part,
A specific pattern area in which a specific pattern having a predetermined shape is arranged inside the code area, a data recording area in which data is recorded by a plurality of types of cells, and an error correction code is recorded by a plurality of types of cells. An error correction code recording area is provided, and within the code area, an area in which decoding target data is not recorded by the cell at a position other than the specific pattern area and the data recording area, and an error caused by the error correction code An empty area that is not subject to correction is provided in a size larger than the size of the single cell, and the inside of the empty area is configured as a recognition target area that is a display key display planned area,
Said information code, said when displayed on the display unit, which the information code key image is an input image from the outside as an image of the retrieval key for generation apparatus is represented in the recognition target region a is, in the data recording area, characterized by recording the address information for specifying a search site on the Internet as the destination to send the key image.

A second invention is an information code in which cells serving as units for displaying information are arranged inside a predetermined code area,
A specific pattern area in which a specific pattern having a predetermined shape is arranged inside the code area, a data recording area in which data is recorded by a plurality of types of cells, and an error correction code is recorded by a plurality of types of cells. An error correction code recording area is provided, and within the code area, an area in which decoding target data is not recorded by the cell at a position other than the specific pattern area and the data recording area. An empty area that is not subject to error correction is provided in a size larger than the size of the single cell, and the empty area is configured as a recognition target area that is a display planned area of a search key .
A search key image to be an image of the search key is displayed on the display unit so as to be displayed in the recognition target area,
Wherein the data recording area, address information for specifying a search site on the Internet as the destination to send the search key image is characterized in that it is recorded.

A third invention is captured by a state of being displayed on the display unit information code formed by arranging a cell which is a unit for displaying information inside the predetermined code region, an information code reading device for reading the information code ,
A management device;
An information code reading system comprising:
The information code includes a specific pattern area in which a specific pattern having a predetermined shape is arranged in the code area, a data recording area in which data is recorded by a plurality of types of cells, and a plurality of types of the cells. An error correction code recording area for recording an error correction code, and an area in which decoding target data is not recorded by the cell at a position other than the specific pattern area and the data recording area within the code area, An empty area that is not subject to error correction by the error correction code is provided in a size larger than the size of the single cell, and the empty area is configured as a recognition target area that is a scheduled display area of a search key are those, on the display unit as the search key image is an image of the search key is represented in the recognition target region Shown,
The information code is recorded in the data recording area, address information specifying a search site provided by the management device as a transmission destination for transmitting the search key image,
The information code reader is
An imaging unit capable of imaging the information code displayed on the display unit ;
If the information code is captured, the data recording area reading section for reading data recorded on the data recording area in Kijo report code before being the captured,
An image extraction unit that extracts an image of the recognition target area configured in the empty area when the information code is captured;
A transmission unit that transmits the image extracted by the image extraction unit as the search key image to the management device identified by the address information read by the data recording area reading unit;
Have
The management device
A receiver for receiving data transmitted from the transmitter;
A storage unit for storing candidate images each representing a plurality of search candidates;
A similar image extraction unit that extracts a predetermined similar image similar to the search key image from the plurality of candidate images stored in the storage unit based on data received by the reception unit;
Have
Wherein the information code reading apparatus, the image extracted by the similar image extraction unit is characterized Rukoto be displayed as a search result.

A fourth invention is an information code generation system for generating an information code in which cells serving as units for displaying information within a predetermined code area are arranged;
Said information code displayed in Table radical 113 captured, the information code reading device for reading the information code,
A management device;
An information code using system comprising:
The information code generation system includes a specific pattern area in which a specific pattern having a predetermined shape is arranged inside the code area, a data recording area in which data is recorded by a plurality of types of cells, An error correction code recording area for recording an error correction code by a cell is provided, and the decoding target data is not recorded by the cell at a position other than the specific pattern area and the data recording area within the code area. Providing an empty area that is not subject to error correction by the error correction code in a size larger than the size of the single cell, and configuring the empty area as a recognition target area that is a scheduled display area of a search key, An application that specifies a search site provided by the management apparatus as a transmission destination for transmitting an image to the data recording area. Less information to generate the information code to be recorded,
The information code reader is
An imaging unit capable of imaging the information code displayed on the display unit ;
If the information code is captured, the data recording area reading section for reading data recorded on the data recording area in Kijo report code before being the captured,
An image extraction unit that extracts an image of the recognition target area configured in the empty area when the information code is captured;
A transmission unit that transmits the image extracted by the image extraction unit as a search key image to the management device identified by the address information read by the data recording area reading unit;
Have
The management device
A receiver for receiving data transmitted from the transmitter;
A storage unit for storing candidate images each representing a plurality of search candidates;
A similar image extraction unit that extracts a predetermined similar image similar to the search key image from the plurality of candidate images stored in the storage unit based on data received by the reception unit;
Have
Wherein the information code reading apparatus, the image extracted by the similar image extraction unit is characterized Rukoto be displayed as a search result.

In the information code generated in the invention of claim 1, the error correction code is an area in which decoding target data is not recorded by the cell at a position other than the specific pattern area and the data recording area within the code area. It is possible to provide a free area that is not subject to error correction by the above-described method in a size larger than the size of the single cell, and to configure the empty area as a recognition target area that is a scheduled display area of a search key . With this information code, the reading side can recognize the image of the search key by a simple reading operation of reading the information code in a state where the search key is displayed in the recognition target area, and the search using the image of the search key can be performed more smoothly. Can be done.

In particular , inside the code area, an empty area, which is an area where the data to be decoded is not recorded by the cell, is located at a position larger than the size of the single cell at a position other than the specific pattern area and the data recording area. The empty area is set as the recognition target area.
In this method, it is possible to secure an area (empty area) in which decoding target data is not recorded by a cell at a position other than the data recording area and the specific pattern area in the code area, and use this empty area as a recognition target area. An information code that can be used can be generated. Since the empty area is an area in which the data to be decoded is not recorded by the cell, the recognition target area is hardly affected by the cell, and the recognition target area can be configured more freely.

In particular, the information code is displayed on the display unit so that a search key image, which is an image input from the outside to the information code generation device, is displayed in the recognition target area.
According to the information code generated by this method, the search key can be searched with a simpler operation. Furthermore, since the availability of pre-position is clearly defined area as a recognition target area, just as compared with such a way as to photograph a search key, it is possible to more accurately identify the range to be extracted search key This makes it easy to omit complicated operations during the extraction.

In particular, in the data recording area, and records the address information for specifying a search site on the Internet as the destination to send the key image.
According to the information code generated by this method, the image of the recognition target area and the address information recorded in the data recording area can be used in association with each other. For example, when reading an information code, it is possible to automatically transmit a search key image to a transmission destination specified by address information recorded in the data recording area, thereby performing a search process at the transmission destination. Will be able to. In particular, every time an information code is read, it is not necessary to perform an input operation of address information for specifying a transmission destination, and it is possible to reliably suppress work burdens and input errors associated with the input operation.

In the invention of claim 2 , condition information for specifying a search condition is recorded in the data recording area.
According to the information code generated by this method, necessary search conditions can be prepared in the data recording area in advance, and it is possible to save time and effort for specifying the conditions at the time of search. It becomes easy to plan. In addition, since it is possible to perform a search in consideration of not only the image of the recognition target area but also other conditions, it is easy to improve the accuracy of the search.

According to a third aspect of the present invention, position data indicating the position of the recognition target area in the code area is recorded in the data recording area.
According to the information code generated by this method, at the time of reading, the position of the recognition target area in the code image can be more accurately specified based on the position data recorded in the data recording area.

In the invention of claim 4 , identification information indicating that the recognition target area exists in the code area is recorded in the data recording area.
According to the information code generated by this method, at the time of reading, it is easy to determine whether or not the recognition target area exists in the code area based on the presence or absence of identification information.

According to the invention of claim 5, an information code having the same effect as that of claim 1 can be realized.
According to the invention of claim 6, an information code having the same effect as that of claim 2 can be realized.
According to the invention of claim 7, an information code having the same effect as that of claim 3 can be realized.
According to the invention of claim 8, an information code having the same effect as that of claim 4 can be realized .

According to the invention of claim 9, when the information code is captured in a state in which the search key recognition target region represented a predetermined search to find the search keys represented in identified target area Processing can be performed. In particular, the reading side can recognize the image of the search key by a simple reading operation of reading the information code in a state where the search key is displayed in the recognition target area, and the search using the image of the search key can be performed more smoothly. Can do.

In particular , the information code medium has a single empty cell that is an area in which data to be decoded is not recorded by the cell at a position other than the specific pattern area and the data recording area within the code area. Of the recognition target area configured in the empty area when the information code medium is imaged, and the empty area is the recognition target area. An image extraction unit for extracting an image is included.
According to this configuration, an area (empty area) in which the decoding target data is not recorded by the cell is secured in a position other than the data recording area and the specific pattern area in the code area, and the information in which this empty area is used as the recognition target area A code can be read. Then, the content represented in the recognition target area of the information code can be extracted as an image, and the search process can be smoothly performed using the image as a condition.

In particular, the information code in the data recording area, address information for specifying a search site on the Internet as the destination to send the key image are those which have been recorded, the information code reading device, the A transmission unit that transmits the image extracted by the image extraction unit to the transmission destination specified by the address information as the search key image , and the management device receives the data transmitted from the transmission unit A storage unit storing candidate images each representing a plurality of search candidates, and an image of the search key from among the plurality of candidate images stored in the storage unit based on data received by the reception unit A similar image extracting unit that extracts a predetermined similar image similar to
According to this configuration, the image of the recognition target area can be used in association with the address information recorded in the data recording area. For example, when reading an information code, it is possible to automatically transmit a search key image to a transmission destination specified by address information recorded in the data recording area, thereby performing a search process at the transmission destination. Will be able to. In particular, every time an information code is read, it is not necessary to perform an input operation of address information for specifying a transmission destination, and it is possible to reliably suppress work burdens and input errors associated with the input operation.

According to a tenth aspect of the present invention, the information code is recorded with condition information for specifying a search condition in the data recording area, and the data transmitted from the transmitting section is stored in the data recording area reading section. The similar image extraction unit includes a plurality of search candidate images prepared in advance based on the data received by the reception unit, and the search is designated by the condition information. An image that matches the condition and is similar to the search key represented in the recognition target area is searched.
According to this configuration, necessary search conditions can be prepared in the data recording area in advance, and it is possible to save time and labor for designating the conditions at the time of search, so that it is easy to save labor and speed. In addition, since it is possible to perform a search in consideration of not only the image of the recognition target area but also other conditions, it is easy to improve the accuracy of the search.

If the invention of claim 11, wherein the information code on the symbol information to the recognition target the search key is represented and the recognition target region in the region by the display unit is represented is captured, the The data transmitted from the transmission unit includes the symbol information recognized by being imaged, and the similar image extraction unit is provided with a plurality of search candidates prepared in advance based on the data received by the reception unit . The image that matches the condition specified by the symbol information and is similar to the search key represented in the recognition target area is searched for.
In this way, if the search process is performed on the condition of the image and the symbol, the narrowing down can be performed efficiently. In particular, if a search is performed using only a single image, there may be a large number of candidates that match this image condition. However, if a search is performed using not only images but also symbols such as characters, the condition Can be narrowed down effectively, and it becomes easy to quickly extract the target contents.

According to a twelfth aspect of the present invention, the similar image extraction unit captures the plurality of information codes in which the search key is represented in the recognition target area by the information code reading device at the same time or in a predetermined continuous state. In the plurality of information codes, the display contents represented in the recognition target areas are displayed in the recognition target areas from among a plurality of search candidate images prepared in advance. An image similar to the retrieved key is retrieved.
In this way, if the search process is performed using a plurality of images as conditions, narrowing down can be performed efficiently. In particular, if a search is performed using only a single image, there may be an enormous number of candidates that match this image condition. However, if a search is performed using a plurality of images as a condition, the candidate that matches the condition is effective. The target content can be quickly extracted easily.

According to a thirteenth aspect of the present invention, the information code is obtained by recording position data indicating a position of the recognition target area in the code area in the data recording area, and the image extracting unit includes the data recording area. The position of the recognition target area in the code area is specified based on the position data read by the area reading unit .
According to this configuration, at the time of reading, the position of the recognition target area in the code image can be more accurately specified based on the position data recorded in the data recording area.

In the invention of claim 14, the information code has identification information indicating that the recognition target area exists in the code area recorded in the data recording area, and the image extraction unit Based on the reading result of the data recording area by the recording area reading unit, the image of the recognition target area is extracted on the condition that the identification information is recorded in the data recording area.
According to this configuration, at the time of reading, it becomes easy to determine whether or not the recognition target area exists in the code area based on the presence or absence of the identification information.

According to the fifteenth aspect of the present invention, it is possible to realize an information code utilization system that has the same effect as the ninth aspect .
According to the sixteenth aspect of the present invention, it is possible to realize an information code utilization system that exhibits the same effect as the tenth aspect .
According to the seventeenth aspect of the invention, it is possible to realize an information code utilization system that exhibits the same effect as the eleventh aspect .
According to the eighteenth aspect of the present invention, it is possible to realize an information code utilization system that has the same effect as the twelfth aspect .
According to the nineteenth aspect of the present invention, it is possible to realize an information code utilization system having the same effect as the thirteenth aspect .
According to the twentieth aspect of the invention, it is possible to realize an information code utilization system that exhibits the same effect as the fourteenth aspect .

FIG. 1 is a schematic diagram schematically illustrating an information code utilization system according to the first embodiment of the present invention. FIG. 2 is a block diagram schematically illustrating an electrical configuration of an information code reading device that constitutes the information code utilization system of FIG. FIG. 3 is an explanatory diagram for conceptually explaining the data configuration of the information code used in the information code utilization system of FIG. FIG. 4 is an explanatory diagram for explaining another type of code corresponding to the information code used in the information code utilization system of FIG. FIG. 5 illustrates the correspondence between the arrangement of each data word in the information code generated by the information code generation apparatus constituting the information code utilization system in FIG. 1 and the arrangement of each data word in another type of code. It is explanatory drawing to do. FIG. 6 is an explanatory diagram conceptually illustrating the format data of the information code used in the information code utilization system of FIG. FIG. 7 illustrates the correspondence between the arrangement of each data word in the information code generated by the information code generation apparatus constituting the information code utilization system in FIG. 1 and the arrangement of each data word in another type of code. FIG. 6 is a diagram illustrating a correspondence relationship different from that in FIG. 5. FIG. 8 is a flowchart illustrating the flow of information code generation in the information code generation device constituting the information code utilization system of FIG. FIG. 9 is an explanatory diagram schematically showing information codes used in the information code utilization system of FIG. FIG. 10 is a flowchart illustrating the flow of search processing in the information code reading device that constitutes the information code utilization system of FIG. FIG. 11 is a flowchart illustrating the flow of the code reading process in the search process of FIG. FIG. 12 is an explanatory diagram illustrating an example of a search result when a similar image search is performed using the information code of FIG. FIG. 13 is an explanatory diagram for explaining an information code used in the information code utilization system according to the second embodiment, and FIG. B) is a diagram illustrating a state in which an image to be searched is displayed in an empty area. FIG. 14 is an explanatory diagram for explaining an information code used in the information code utilization system according to the third embodiment, and FIG. 14 (A) is a diagram showing a state where an empty area is blank, B) is a diagram illustrating a state in which an image to be searched is displayed in an empty area. 15A is an explanatory diagram conceptually showing the data structure of the data to be decoded in the information code of FIG. 13, and FIG. 15B conceptually shows the data structure of the data to be decoded in the information code of FIG. FIG. FIG. 16 is an explanatory diagram for explaining an information code used in the information code utilization system according to the fourth embodiment, and FIG. 16 (A) is a plan view of the formation target medium as viewed from the front side. (B) is a schematic cross-sectional view schematically showing a cross-section obtained by cutting the formation target medium in the horizontal direction at the center position in the vertical direction. FIG. 17 is an explanatory diagram for explaining a formation target medium on which an information code is formed and a subject to be covered with the medium. FIG. 18A is an explanatory diagram for explaining a state in which the forming target medium or the like placed on the subject is imaged by the reading device as shown in FIG. 17, and FIG. 18B is a code image obtained by the imaging. It is explanatory drawing which illustrates this. FIG. 19 is an explanatory diagram for explaining an information code used in the information code utilization system according to the fifth embodiment. FIG. 20A is an explanatory diagram illustrating an example in which a search target is described in a free area of the information code medium illustrated in FIG. 19A, and FIG. 20B illustrates a state in which the medium is imaged. FIG. FIG. 21 is an explanatory diagram illustrating a code image obtained by imaging in FIG. FIG. 22 is a flowchart illustrating the flow of search processing in the information code reader according to the sixth embodiment. FIG. 23A is an explanatory diagram showing an example in which the search target and symbol information are described in the empty area of the information code medium used in the seventh embodiment, and FIG. It is explanatory drawing which shows. FIG. 24 is a flowchart illustrating the code reading process according to the seventh embodiment. FIG. 25 is a flowchart illustrating the flow of code reading processing according to the eighth embodiment. FIG. 26 is an explanatory diagram illustrating an example of an information code used in an information code utilization system according to another embodiment. FIG. 27 is an explanatory diagram illustrating another example of an information code used in an information code utilization system according to another embodiment. FIG. 28 is an explanatory diagram illustrating another example 2 of the information code used in the information code utilization system according to another embodiment.

[First embodiment]
Hereinafter, a first embodiment embodying the present invention will be described with reference to the drawings.
An information code utilization system 1 shown in FIG. 1 is generated by an information code generation device 2 that generates an information code 100 in which cells serving as units for displaying information are arranged in a predetermined code area, and an information code generation device 2. The information code reading device 10 for reading the information code 100 and the management device 190 are provided. The information code generation device 2 corresponds to an example of an information code generation system. Further, the information code reading device 10 and the management device 190 correspond to an example of an information code reading system.

(Information code generator)
The information code generation device 2 (hereinafter also referred to as the generation device 2) is configured as an information processing device such as a personal computer, for example, and includes an operation unit including a control unit 3 including a CPU, a keyboard, a mouse, and other input devices. Unit 4, storage unit 5 including a storage device such as ROM, RAM, HDD, and nonvolatile memory, display unit 6 including a known display device (liquid crystal display or other display device), and wired communication with an external device Alternatively, the communication unit 7 that functions as a communication interface for performing wireless communication, and a printing unit that has the same hardware configuration as a known printer and can print the information code 100 or the like based on print data from the control unit 3 8 (printing apparatus).

(Management device)
The management device 190 is configured as an information processing device such as a personal computer, and includes a control unit including a CPU, an operation unit including a keyboard, a mouse, and other input devices, a ROM, a RAM, an HDD, and a nonvolatile memory. A storage unit such as a storage device, a display unit including a known display device (liquid crystal display or other display device), and a communication unit functioning as a communication interface for performing wired communication or wireless communication with an external device It has. The management device 190 is connected to the Internet, and functions as a search site that displays search results on the Internet. The storage unit of the management apparatus 190 stores a large number of search candidate images to be described later, and keywords (for example, product name, manufacturer name, product type, product number, etc.) are assigned to each search candidate image. The images of the respective search candidates are stored in the associated state.

(Information code reader)
Next, the overall configuration of the information code reader 10 (hereinafter also referred to as the reader 10) will be described. As shown in FIG. 2, the information code reader 10 is configured as a code reader capable of reading a two-dimensional code in terms of hardware, and an outer case is configured by a case (housing) (not shown). In which various electronic components are accommodated. The reading device 10 is also connectable to the Internet, and is configured to be able to access the management device 190 via the Internet.

  The information code reader 10 mainly includes an optical system such as an illumination light source 21, a light receiving sensor 23, a filter 25, and an imaging lens 27, and a micro memory such as a memory 35, a control circuit 40, an operation switch 42, and a liquid crystal display 46. A computer (hereinafter referred to as “microcomputer”) system and a power system such as a power switch 41 and a battery 49 are configured. These components are mounted on a printed wiring board (not shown) or built in a case (not shown), and are integrally assembled to the case (housing).

  The optical system includes an illumination light source 21, a light receiving sensor 23, a filter 25, an imaging lens 27, and the like. The illumination light source 21 functions as an illumination light source capable of emitting illumination light Lf, and includes, for example, a red LED and a diffusion lens, a condensing lens, and the like provided on the emission side of the LED. In the present embodiment, illumination light sources 21 are provided on both sides of the light receiving sensor 23, and the illumination light Lf can be irradiated toward the reading object R through a reading port (not shown) formed in the case. It is configured. As the reading object R, for example, various objects such as a resin material and a metal material are conceivable. For example, an information code 100 (described later) as shown in FIG. Thus, an information code medium to be read is configured.

  The light receiving sensor 23 corresponds to an example of an “imaging unit” that can image the information code 100 (described later), and is configured to receive the reflected light Lr irradiated and reflected on the reading object R and the information code 100. Thus, for example, an area sensor in which light receiving elements, which are solid-state imaging elements such as C-MOS and CCD, are two-dimensionally arranged corresponds to this. The light receiving sensor 23 is mounted on a printed wiring board (not shown) so that incident light incident through the imaging lens 27 can be received by the light receiving surface 23a.

  The filter 25 is an optical low-pass filter that allows passage of light having a wavelength less than or equal to the wavelength of the reflected light Lr, for example, and can block passage of light exceeding the wavelength, and a reading port (not shown) formed in the case. And the imaging lens 27. Thereby, unnecessary light exceeding the wavelength equivalent of the reflected light Lr is prevented from entering the light receiving sensor 23. Further, the imaging lens 27 is constituted by, for example, a lens barrel and a plurality of condensing lenses accommodated in the lens barrel. In the present embodiment, the imaging lens 27 is provided at a reading port (not shown) formed in the case. The incident reflected light Lr is collected, and a code image of the information code 100 is formed on the light receiving surface 23 a of the light receiving sensor 23.

  The microcomputer system includes an amplification circuit 31, an A / D conversion circuit 33, a memory 35, an address generation circuit 36, a synchronization signal generation circuit 38, a control circuit 40, an operation switch 42, an LED 43, a buzzer 44, a liquid crystal display 46, and a communication interface 48. Etc. This microcomputer system is configured around a control circuit 40 and a memory 35 that can function as a microcomputer (information processing apparatus), and the image signal of the information code 100 captured by the optical system described above is signaled in hardware and software. It can be processed.

  An image signal (analog signal) output from the light receiving sensor 23 of the optical system is input to the amplification circuit 31 and amplified by a predetermined gain, and then input to the A / D conversion circuit 33, and the analog signal is converted into a digital signal. Is converted to The digitized image signal, that is, image data (image information) is input to the memory 35 and stored in the image data storage area of the memory 35. The synchronization signal generation circuit 38 is configured to generate a synchronization signal for the light receiving sensor 23 and the address generation circuit 36. The address generation circuit 36 is based on the synchronization signal supplied from the synchronization signal generation circuit 38. Thus, the storage address of the image data stored in the memory 35 can be generated.

  The memory 35 is composed of a semiconductor memory device or the like, and corresponds to, for example, a RAM (DRAM, SRAM, etc.) or a ROM (EPROM, EEPROM, etc.). In addition to the above-described image data storage area, the RAM of the memory 35 is configured to be able to secure a work area and a reading condition table that are used by the control circuit 40 in each processing such as arithmetic operation and logical operation. . The ROM stores in advance a predetermined program that can execute a reading process and the like that will be described later, and a system program that can control each piece of hardware such as the illumination light source 21 and the light receiving sensor 23.

  The control circuit 40 is a microcomputer capable of controlling the entire information code reader 10, and includes a CPU, a system bus, an input / output interface, and the like, and has an information processing function. Various input / output devices (peripheral devices) are connected to the control circuit 40 via a built-in input / output interface. In this embodiment, a power switch 41, an operation switch 42, an LED 43, a buzzer 44, A liquid crystal display 46, a communication interface 48, and the like are connected. In addition, a host computer HST corresponding to the host system of the information code reader 10 can be connected to the communication interface 48.

  The power supply system includes a power switch 41, a battery 49, and the like. When the power switch 41 managed by the control circuit 40 is turned on and off, the conduction of the drive voltage supplied from the battery 49 to each device and each circuit described above is established. Or shut off is controlled. The battery 49 is a secondary battery that can generate a predetermined DC voltage, and corresponds to, for example, a lithium ion battery.

(Information code)
Next, the information code 100 used in the information code using system of FIG. 1 will be described with reference to FIGS. The example of FIG. 1 and the example of the right side of FIG. 5 are slightly different in the cell arrangement and the size of the specific pattern, but the basic idea is the same and has the same characteristics. The information code 100 shown in FIG. 1 and FIG. 5 is generated by, for example, the information code generation device 2 described above, and has a configuration in which cells 102 serving as units for displaying information are arranged inside a predetermined code area. It has become. In the information code 100 of FIGS. 1 and 5, the “code area” is a rectangular area that can include all of the plurality of dark cells arranged, and is the smallest square that includes all of the cells constituting the information code 100. It is a region or a rectangular region. Specifically, it is a minimum square area or rectangular area including all three position detection patterns (cutout symbols) 104. In the example of FIGS. 1 and 5, the plurality of cells 102 are configured by either a rectangular (for example, a square outer diameter) light (white) cell or a dark (black) cell, Within the code area, these cells 102 are arranged in a matrix around an empty area 110 described later. The light color cell and the dark color cell are not limited to the white cell and the black cell, respectively. When the dark color cell is configured with a predetermined lightness, the light color cell only needs to have a higher lightness. In the information code 100, a light or dark margin area is formed around the code area so as to surround the code area. In the examples of FIGS. A margin area (for example, another color having a lightness higher than that of a white or dark cell) is arranged adjacent to the periphery of the code area.

  The information code 100 includes data in a specific pattern area in which a specific pattern having a predetermined shape is arranged inside a rectangular code area (for example, a square shape or a rectangular shape), and a plurality of types of cells 102. A data recording area for recording and an error correction code recording area for recording an error correction code by a plurality of types of cells 102 are provided. As shown in FIGS. 1 and 5, the specific pattern of the information code 100 is, for example, a known predetermined model number of a QR code (registered trademark) (in the example of FIG. 5, a predetermined model number of a QR code standardized by JIS or the like). ), The position detection pattern (cutout symbol) 104 as the specific pattern is arranged at each of the three corners of the code area in the examples of FIGS. ing. Further, a timing pattern 106 and an alignment pattern 108 as specific patterns are also provided at predetermined positions in the predetermined model number. As described above, in the information code 100, a specific pattern (position detection pattern 104, timing pattern 106, alignment pattern 108 (not shown in FIG. 5)) having a predetermined shape is arranged at a predetermined position. . It should be noted that, within the code area, positions other than the empty area 110, which will be described later, are configured by such specific pattern areas, recording areas (areas consisting of either data recording areas or error correction code recording areas), and the like. Yes.

  The number of rows and columns of cells of the information code 100, the shape and position of a specific pattern, the position of format information, the codeword candidate position (address for specifying the arrangement order of codewords), etc. You may grasp. For example, a plurality of model numbers may be provided in the type of the information code 100. In this case, the number of rows and columns of cells, the shape and position of a specific pattern, the position of format information, and a code word are arranged for each model number. The candidate position (address) may be determined in advance. If the model number information for specifying the model number is arranged at a predetermined position (reserved area) in the code area, the reader device can determine the number of rows and columns of cells of the information code 100 based on the model number information. It becomes possible to grasp the shape and position of the specific pattern, the position of the format information, and the candidate position (address) of the code word. Note that the present invention is not limited to this method, and any other method may be used as long as the reader can grasp the method.

  Within the code area, the area other than the specific pattern area, data recording area, and error correction code recording area is an area where data is not recorded by the cell 102 and is not subject to error correction by the error correction code. A certain free area 110 is provided in a size larger than the size of the single cell 102. In the examples of FIGS. 1 and 5 and the like, the data recording area and the error correction code recording area are arranged in an annular and rectangular shape along the periphery of the code area, and the center of the code area (the center of the code area is defined). A free area 110 is formed in a predetermined area. The “area in which no data is recorded by the cell 102” means an area in which a code word such as a data code word and an error correction code word to be described later is not recorded, and an area in which format information is not recorded. To do. The “region not subject to error correction by the error correction code” means a region where error correction using the error correction code recorded in the error correction code recording region is not performed. Therefore, even if some information (such as additional information described later) is recorded in the empty area 110, error correction for the information is performed by the error correction code in the error correction code recording area existing around the empty area 110. Absent.

  In the following description, a configuration corresponding to the predetermined model number as shown in the right diagram of FIG. 5 is associated with another model number (Ver. Number) having a smaller size than the predetermined model number as illustrated in the left diagram of FIG. An example in which the position of each code word of the information code 100 in the right diagram of FIG. 5 and the position of each code word of the other code 120 in the left diagram of FIG. 5 are associated by the arrangement conversion table as shown in the lower diagram of FIG. Will be described as a representative example. In this example, the amount of data that can be stored in the other type code 120 in the left diagram of FIG. 5 can be expressed with the empty area 110 provided by the information code 100 as shown in the right diagram of FIG. Conversely, when the information code 100 shown in the right diagram of FIG. 5 is read, each code word of the information code 100 can be read as a code word of another type code 120 as shown in the left diagram of FIG. .

  In the right diagram of FIG. 5, each codeword area arranged around the empty area 110 is conceptually shown by a broken line frame or the like. An area (predetermined position 105) for recording format information is conceptually indicated by a predetermined type of hatching. In the right diagram of FIG. 5, in the area where the format information is recorded and the area where the code word is recorded, only the squares are shown, and the specific arrangement of light cells and dark cells is omitted. Further, in the example of the right diagram in FIG. 5, the interior of the empty area 110 (the central part of the code area) is also assigned to correspond to the cell arrangement, but the configuration of the empty area 110 is free, and FIG. It may be configured as described above, or may be other configurations.

  The format information (format information) is configured as shown in FIG. 6, for example, and is recorded at a predetermined position 105 (a predetermined type of hatching position) in the information code 100 with a specific format configuration. This format information includes correction level information for specifying an error correction level and mask number information for specifying a mask number. The correction level information is information for specifying an error correction level used in the information code 100, and corresponds to an error correction level used in the other type code 120 when the information is converted into the other type code 120 and read, for example. The mask number is information for specifying which mask type is the mask applied to the codeword area of the information code 100 (area in which the data codeword and error correction codeword are recorded).

  As shown in FIG. 6, the format information is recorded in a state reflecting a predetermined type of mask pattern (specific mask), and the format information is identified by identifying the mask type of the format information in the same manner as a known QR code. 5 It is possible to detect a specific code type (type provided with a free area 110) as shown in the right figure. For example, when the model 1 is configured as a QR code of a known standard, data (cell array) expressed when the model 1 mask is applied to the format information as shown in FIG. 6 is recorded at a predetermined position. However, when configured as the model 2, data (cell array) expressed when the model 2 mask is applied to the format information as shown in FIG. 6 is recorded at a predetermined position. . On the other hand, in the information code 100 of this embodiment shown in FIG. 5 (special type code having a free area 110), a specific mask of a different type from the models 1 and 2 (FIG. 6) for the format information as shown in FIG. Then, the data (cell array) expressed when the frame QR is used is recorded at a predetermined position 105. Then, in any of the types 1 and 2 of the known standard and the type of the information code 100, a check digit corresponding to the correction level (correction level information) and mask number (mask number information) to be recorded is added. Format information is configured, on which various types of masks can be applied. Specifically, mask processing is performed by a known method using various types of mask patterns, and the bit pattern after the mask processing is recorded at a predetermined position 105. Therefore, when the format information is recorded at the predetermined position 105 after applying a specific mask (example for frame QR in FIG. 6) to the format information like the information code 100, the information recorded at the predetermined position 105 in this way is recorded. If the mask process is canceled and decoded based on the specific mask, the check digit is matched, so that the type of the information code 100 can be specified. On the contrary, even if the data at the predetermined position 105 of the information code 100 is removed based on the masks of the model 1 and model 2, the check digit does not match. be able to.

  In this information code 100, after detecting a specific pattern (position detection pattern 104, etc.) and specifying the code area, code direction, and each cell position in the same manner as the known QR code, the same as the known QR code. By decoding the predetermined position 105 where the format information is recorded by the method, it is possible to identify the type of the information code 100 (special type having the empty area 110) according to the type of the mask that has been successfully decoded. Then, the error correction level used in the information code 100 can be specified by the decoded format information, and applied to the code word area of the information code 100 (the area where the data code word and the error correction code word are recorded by the cell). It is possible to specify the mask type.

  The content recorded in the information code 100 has, for example, a configuration as shown in FIG. 3, header data (frame QR header) is set at the beginning of the data array, and input data (decryption target data) after the header data. ) Continues. In the example of FIG. 3, input data (data to be decoded) is compressed by, for example, a known method and converted into a data word (data code word). However, such compression may not be performed. The header data used in the information code 100 is also referred to as a “frame QR header” in the following description. Further, in this specification, such an area for recording data words (data code words) of header data and input data (data to be decoded) and an area for recording the above-described format information correspond to “data recording areas”. To do. Further, in the example of FIG. 3, as header data (frame QR header), another type code 120 (a code type used for decoding the information code 100, which will be described later), and the information code 100 according to the arrangement conversion table (FIG. 5). Information (identified as Ver. Number in FIG. 3) and identification information that can specify the format in the empty area are recorded. In the example of FIG. 3, as the header data, in addition to the type of other code (Ver. Number), the format of the empty area 110 is the image format shown in FIGS. Information (first information) for identifying that it is in the form) and information (corresponding to the second information) that can identify the position of the empty area 110 (the position of the recognition target area 121 in the examples of FIGS. 1 and 9). "Image area position information") is recorded. Among these, the information (first information) specifying that the format of the free area 110 is an image format (a format in which a recognition target area is provided) corresponds to an example of “identification information” indicating the presence of the recognition target area. . The information (second information) that can specify the position of the empty area 121 (the position of the recognition target area 121) corresponds to an example of “position data” indicating the position of the recognition target area 121 in the code area.

  In this configuration, for example, the entire empty area 110 corresponds to the recognition target area 121. In the examples of FIGS. 3 and 5, the column position and the row position of the empty area 110 (that is, the recognition target area 121) are specified. Possible information is recorded as image area position information (position data). More specifically, a combination of the upper left row position and column position of the recognition target area 121 when the information code 100 configured in a rectangular shape as shown in FIG. 5 is divided into a plurality of rows and columns in a grid pattern, The combination of the row position and the column position in the lower right of the recognition target area 121 is recorded as image area position information (position data). Here, the combination of the upper left row position and the column position of the recognition target area 121 and the lower right row position and the column position of the recognition target area 121 are used as image area position information (position data). A combination of row position and column position at each of the four corners of the target area 121 may be used as image area position information (position data). Further, the width of each row and each column when the information code 100 is divided in a lattice shape as shown in FIG. 5 corresponds to the width in the row direction and the width in the column direction of a single cell, respectively.

  An error correction code word (ECC word) that becomes an error correction code follows the input data (data word that is data to be decoded). In the information code 100, an area for recording the error correction code is an error correction code recording area. Note that a method for generating an error correction code (error correction code word) based on a data word (in the example of FIG. 3, header data and input data (data to be decoded)) is a known two-dimensional code (such as a QR code). A method defined in the standard can be used. For example, as a method for generating an error correction codeword based on a data word (data codeword), an error correction codeword generation method (JISX0510: 2004, 8.5 error correction) defined in JISX0510: 2004 is used. be able to. Note that the method of generating the error correction codeword is not limited to this, and various known methods can be used.

  Further, in the information code 100, each data word (data code word) representing the data to be decoded (data code word) and an error correction code word are arranged in the code area based on predetermined arrangement position information. In this configuration, as shown in FIG. 5, the arrangement candidate positions of the respective code words are determined in advance within the code area of the information code 100, and a number (address) is assigned to each arrangement candidate position. The arrangement position information is information for specifying which arrangement candidate position each code word constituting the recording contents shown in FIG. 3 should be arranged. In the example of the right diagram in FIG. 5, the arrangement candidate positions Nos. 1 to 25 are schematically illustrated. In each arrangement candidate position, the first and last bit portions are numbered and clearly shown. In the right diagram of FIG. 5, the arrangement candidate positions after the 26th are omitted.

  Specifically, in the model number of the other type code 120 (known QR code) (the model number of the other type code 120 specified by the header data shown in FIG. 3), the code word in each order is included in the other type code 120. Whether or not to be arranged at a position is determined in advance by a known standard or the like, and when the other-type code 120 is decoded, the code words in each order are decoded based on the arrangement determined in this way. For example, in the example of the other type code 120 shown in the left diagram of FIG. 5, the 0th code word is arranged at the lower right, the first code word is arranged thereon, and the second code word is arranged thereon. The arrangement position of each code word is determined in advance. Therefore, when decoding this other type code 120, the 0th code word, the 1st code word, the 2nd code word, the 3rd code word, etc. based on the arrangement determined in this way. It will be deciphered in order.

  On the other hand, in the arrangement position information (arrangement conversion table) shown in FIG. 5, the numbers of the arrangement positions (arrangement positions of the code words in each order) determined in advance by the other type code 120 in this way are stored in advance in the information code 100. Each number is associated with a number of a determined candidate position (position candidate position of each code word). Specifically, “the arrangement position of the first code word in the other type code 120 corresponds to the first arrangement candidate position of the information code 100”, “the arrangement position of the second code word in the other type code 120 is information. Information such as “corresponding to the second arrangement candidate position of the code 100” and “the arrangement position of the third code word in the other type code 120 corresponds to the third arrangement candidate position of the information code 100” is, for example, table data Each code word is recorded, and the arrangement position of each numbered code word in the other type code 120 is associated with each arrangement candidate position of the information code 100. Thus, when the information code 100 is decoded, the code word (code word at each address) in each placement candidate position in the code area is associated with the placement position information (placement conversion table). The other-type code 120 may be rearranged at each arrangement position, and the other-type code 120 rearranged in this way may be decoded by a known method. For example, when the information code 100 is decoded using the arrangement conversion table shown in the lower diagram of FIG. 5, the code word at the first arrangement candidate position of the information code 100 is changed to the arrangement position of the first code word in the other type code 120. The code word at the second placement candidate position of the information code 100 is placed at the placement position of the second code word in the other code 120, and the code word at the Nth placement candidate position of the information code 100 is placed in the other kind. The code 120 is rearranged in such a manner as to be arranged at the arrangement position of the M-th code word associated with the N-th arrangement candidate position, and the other type code (re-arranged in this way) QR code) may be decoded by a known method. As for the above-described arrangement position information (arrangement conversion table), data (common arrangement conversion table) common to the information code generation apparatus 2 that generates the information code 100 and the information code reading apparatus 10 that reads the information code 100 are respectively provided. It is desirable to be provided.

(Information code generation process)
Next, an information code generation process and an information code generation method will be described with reference to FIG. In the following, a case where the other type code 120 is a QR code (registered trademark) and the information code 100 has a specific pattern similar to the QR code as shown in FIG. 5 will be described as an example. In this example, the information code 100 having the empty area 110 is also referred to as “frame QR”.

  The information code generation process of FIG. 8 is a process performed by the information code generation device 2 and is started by a predetermined operation on the operation unit 4, for example. In this processing, first, data to be encoded from outside (decoding target data), attribute data, and code type data (information code 100 is generated, or a general two-dimensional code (for example, a general QR code) is generated. (Data specifying whether to generate) (S1). In this configuration, the control unit 3 and the operation unit 4 correspond to an example of a “data acquisition unit” and function to acquire data to be decoded (input data from the outside). Further, the present invention is not limited to such an example. For example, the control unit 3 and the communication unit 7 may be configured as a “data acquisition unit” and function to acquire data input from outside through communication as decryption target data. Good. As shown in FIGS. 1 and 9, when the information code 100 is formed in such a manner that the search target image T1 is incorporated in the empty area 110 in advance, the image data of the search target image T1 is also acquired in S1. Note that the image data for configuring such a search target image T1 may be data input to the generation device 2 by the user, or data previously stored in the generation prime minister 2. Good.

  After acquiring the data in S1, a method for compressing the acquired data is determined by a known method (S2), and the compressed data (decoded data) is expressed by a plurality of data words (data code words). (S3). Then, after S3, it is determined whether or not the code type data acquired in S1 is the type (frame QR) of the information code 100 having the free space 110. If the code type data acquired in S1 is the type of the information code 100 having the free area 110 (frame QR), the process proceeds to Yes in S4, and the type of the information code 100 having the free area 110 (frame QR). ) Is generated and set at the head of the data array including a plurality of data words as shown in FIG. 3 (S5). In the header data of FIG. 3, as described above, information (version number information etc.) that can specify the type (model number) of the other type code 120 shown in the right diagram of FIG. Information (first information) that specifies that the recognition target area is provided) and information that can specify the image area (recognition target area) in the empty area 110 ("image area corresponding to the second information") Position information ") is recorded. On the other hand, when the code type data acquired in S1 is not the type (frame QR) of the information code 100 having the free area 110 (data for selecting a general two-dimensional code (for example, model 1 or model 2 is selected). If (data), the process proceeds to No in S4.

  When the process proceeds to No in S4, an error correction code is generated by a known method based on the configuration of the data word (data code word) generated in S3, and a plurality of error correction words (error correction) representing the error correction code are generated. Codeword) is generated (S6). On the other hand, when proceeding from S4 to S5, an error correction code is generated by a known method based on the configuration of the final data word (a plurality of data code words representing header data and input data) generated in S3 and S5. Then, a plurality of error correction words (error correction code words) representing the error correction code are generated (S6).

  After S6, it is determined whether or not the code type data acquired in S1 is the type (frame QR) of the information code 100 having the free area 110 (S7), and the code type data acquired in S1 is If it is not the type (frame QR) of the information code 100 having the free area 110, the process proceeds to No in S7, and a two-dimensional code (for example, QR code) is generated by a known method. When the process proceeds to No in S7, the model number of the two-dimensional code having a size capable of storing the data word (data code word) generated in S3 and the error correction word (error correction code word) generated in S6 (in this example, In a plurality of standardized known QR code model numbers, a model number of a size that can store the data word generated in S3 and the error correction word generated in S6) is determined, and the arrangement predetermined by the model number is determined. According to the pattern, the data word generated in S3 and the error correction word generated in S6 are arranged (S9).

  On the other hand, if the code type data acquired in S1 is the type (frame QR) of the information code 100 having the free area 110, the process proceeds to Yes in S7, and the data word (data) generated in S3 and S5 (Code word), the error correction word (error correction code word) generated in S6, and the empty area, the model number of the information code 100 that can be stored is determined (S10). Note that the size of the empty area may be a predetermined fixed size, or may be designated by an input or the like by the user before S10. Further, the size of the empty area may be specified by the number of rows and the number of columns, or may be specified by information such as how many words it corresponds to, or how many cells it corresponds. In the example of FIGS. 5 and 8, for example, in a plurality of model numbers (sizes) determined in advance by the type of the information code 100, the data word (data code word) generated in S3 and S5 and the error correction generated in S6 A model number of a size that can store a word (error correction code word) and an empty area is determined. When a plurality of model numbers can be used in the type of the information code 100, the number of rows and the number of columns, the shape and layout of a specific pattern, the layout of format data, and the layout candidate position of each code word are provided for each model number. It should be determined. Also, in any model number, the arrangement candidate positions of the respective code words are determined in order from the outer circumference side as shown in the right diagram of FIG. 5 (for example, the arrangement candidate positions are set in a spiral shape from the outer circumference side to the inside). The placement candidate position of each code word is determined so that the placement candidate position with a smaller number is located outside, and a portion where the code word is not placed (that is, a portion that is not used) among the prepared placement candidate positions. If it uses, it becomes easy to ensure a large empty area | region by the center part. In addition, when there are a plurality of model numbers having a size capable of storing the data word (data code word) generated in S3 and S5, the error correction word (error correction code word) generated in S6, and the empty area, The smallest model number (size) may be determined from among them, or the user may be able to specify any model number (size) from among them. When the information code 100 is generated, a predetermined size (number of rows and columns), a specific pattern arrangement, and each arrangement position position of the codeword are used in the model number thus determined. The arrangement position of each code word is determined according to the above-described arrangement conversion table. In the following, an example in which the model number as shown in the right diagram of FIG. 5 is determined in S10 will be specifically described.

  After S10, the data word (data code word) generated in S3 and S5 and the error correction word (error correction code word) generated in S6 are arranged based on the arrangement position information (arrangement conversion table) described above. It will be. In the information code generation device 2, the above-described arrangement position information (arrangement conversion table) is stored in the storage unit 5, and in this arrangement conversion table, as described above, each arrangement position (each (Order position of code word) is associated with a predetermined candidate position (position candidate position of each code word) in information code 100, respectively. In the process of S11, the code words to be recorded (the data words (data code words) generated in S3 and S5 and the error correction words (error correction code words) generated in S6) are shown in the left of FIGS. Is represented by another code 120 (a two-dimensional code having a size smaller than that of the information code 100 and a size capable of storing the data word generated in S3 and S5 and the error correction word generated in S6). After specifying the arrangement position of each code word (code word in each order), the code word in each order is associated with the arrangement position of the code word in each order by arrangement position information (arrangement conversion table). It arrange | positions in each arrangement | positioning candidate position in the information code 100. FIG. For example, in the arrangement position information (arrangement conversion table) in FIG. 5, the arrangement position of the first code word in the other type code 120 is associated with the first arrangement candidate position of the information code 100. The first code word of the code words to be recorded (the data word generated in S3 and S5 and the error correction word generated in S6) is arranged at the first arrangement candidate position in the information code 100. In addition, since the second code word arrangement position in the other-type code 120 and the second arrangement candidate position of the information code 100 are associated with each other, the second code word in the code words to be recorded Is placed at the second candidate position in the information code 100. In this way, the arrangement position (an arrangement position of the Nth code word) in the other type code 120 in which the Nth code word is arranged in the codeword to be recorded and the Mth arrangement candidate position of the information code 100 are as follows. If they are associated, the Nth codeword among the codewords to be recorded is arranged at the Mth arrangement candidate position in the information code 100.

  That is, only the data word generated in S3 and S5 and the error correction word generated in S6 can be expressed by another type code 120 (configured as a known QR code) smaller than the information code 100. When the data word generated in S3, S5, the error correction word generated in S6, and the empty area 110 are stored, it must be expressed by the information code 100 having a larger size. Therefore, in the present embodiment, the data word generated in S3 and S5, the error correction word generated in S6, and the empty area 110 are represented by the information code 100 having a size larger than the other type code 120, and S3 and S5. The data word generated in step S6 and the error correction word generated in step S6 are stored in the arrangement of the code words when expressed by another type code 120 (known QR code) and the information code 100 having a size larger than this. In this case, the correspondence relationship with each arrangement of codewords can be specified by a predetermined arrangement conversion table.

  In this configuration, the “arrangement conversion table” as shown in FIG. 5 corresponds to an example of “arrangement position information for specifying each arrangement position when a plurality of data words expressing the data to be decoded are arranged in the code area”. The arrangement conversion table (arrangement position information) includes data words in each order when the data to be decoded is expressed by a plurality of data words, and each arrangement position in the code area of the data words in each order. Are configured as information determined in association with each other. The storage unit 5 corresponds to an example of an “arrangement position information recording unit” and functions to record data (arrangement position information) of such an arrangement conversion table.

  After S9 or S11, a mask pattern to be applied to the code word whose location is determined in S9 or S11 is determined by a known predetermined method (for example, a known method used in QR code), and the determined mask Masking is performed by a known mask processing method so that the pattern is reflected in the code word whose location is determined in S9 or S11 (S12). Then, the check digit is calculated based on the mask pattern information (mask number) and error correction level information set in S12, and the format information including the error correction level, mask number, and check digit is generated as shown in FIG. (S13). Note that data such as a mask number and an error correction level to be recorded as format information may be input in S1.

  If the code type data acquired in S1 is the type (frame QR) of the information code 100 having the free area 110, the process proceeds to Yes in S14, and the format information generated in S13 includes the above-described format information. Mask processing is performed to reflect the specific mask (frame QR mask) (see FIG. 6). On the other hand, if the code type data acquired in S1 is not the type (frame QR) of the information code 100 having the vacant area 110, the process proceeds to No in S14 and has a mask pattern different from the mask pattern set in S16. Set the mask (model 1 mask or model 2 mask). After masking the format information in S15 or S16, the format information after the mask processing is arranged at a predetermined position 105 in the code area (S17).

  After the specific pattern area, the data recording area, and the error correction area are thus configured, the constituent elements of the empty area 110 are arranged (S18). In the example of FIG. 3, since the position of the empty area 110 (that is, the position of the recognition target area 121) is designated by the row position and the column position, in S18, the area specified at the designated position in this way. Determine the components within. For example, when the search target image T1 is arranged in advance as in the recognition target area 121 shown in FIGS. 1 and 9, in S18, an image represented by the data of the search target image T1 acquired in S1. Are incorporated into the above-described empty area 110. The empty area 110 may be configured as a display area to be searched (the display area of the image T1 in FIGS. 1 and 9) when the information code 100 is generated as described above, as in an embodiment described later. In addition, when the information code 100 is generated, a search area is not displayed in the empty area 110, but a blank area (see FIG. 19) or a space area (light transmission area as shown in FIG. 17) is used. May be a “scheduled display area for search target”.

  In the above example, the position of the image area (position of the image area), the shape and color, the shape and color of the identification display, etc. included in the header data of FIG. 3 are determined in advance. The user may be able to specify by input, and the user may be able to specify the shape and color of the image area or the shape and color of the identification display by input. In this case, an image area of the shape and color specified by the user is formed at the position specified by the user, and the range is indicated by the identification display of the shape and color specified by the user. Further, a symbol or a figure such as a character or a number may be arranged in the recognition target area 121 or outside the image area. In this case, for example, the user can input the symbol or figure to be displayed and the position of the symbol or figure. In S18, the designated symbol or figure is designated (for example, the upper position of the image area). Should be arranged.

  After the information code 100 or other two-dimensional code is generated in this way, the code is printed by the printing unit 8 (S19). In S19, instead of printing, the display unit 6 may display the information code 100 or the like, and the data of the information code 100 generated by the processing up to S17 is stored in an external device (for example, a portable terminal or a computer). Or other information equipment).

  In this configuration, the control unit 3 of the information code generation device 2 corresponds to an example of a “data recording area generation unit”. When the empty area 110 is provided inside the code area of the information code 100, the control section 3 is located at a predetermined position in the code area. Based on the arrangement position information recorded in the arrangement position information recording unit, the format information is recorded in a specific format configuration, and each data word representing the decoding target data (input data) acquired by the data acquisition unit is expressed. A data recording area is generated so as to be arranged. In addition, in the “data recording area generation unit” configured by the control unit 3, when the empty area 110 is provided inside the code area, the cell array at the predetermined position 105 reflects a predetermined type of mask pattern (specific mask). Is configured.

(Search processing using information code)
Next, search processing using the information code 100 shown in FIG. 1, FIG. 5, right diagram, FIG. The search process in FIG. 10 is executed, for example, when a predetermined operation (for example, operation of the operation switch 42) is performed by the user, and after the process starts, the information code 100 is read (S10). The process of S10 is performed, for example, as shown in FIG. 11. First, the information code 100 is imaged and the format information is decoded (S40). In this process, the two-dimensional code in the imaging area of the light receiving sensor 23 is imaged to obtain a captured image of the two-dimensional code, and the shape of the two-dimensional code is detected. Specifically, a known method is used to recognize the position detection pattern 104 and detect the outer shape of the two-dimensional code. For example, the position detection pattern 104 is detected by a known method for detecting a 1: 1: 3: 1: 1 waveform, which is performed with a QR code (registered trademark), and the outer shape of the imaged two-dimensional code is displayed as a QR code. Detection is performed by a known method performed by (registered trademark). When such an outer shape detection process is performed, when the information code 100 is captured, the outer shape of the information code 100 is detected. Note that the outer shape detection method may be another method as long as it can detect the shape of a specific pattern or the outer shape of a two-dimensional code.
In this configuration, the light receiving sensor 23 corresponds to an example of an “imaging unit” and functions to image the information code 100 generated by the information code generation device 2.

  When the outer shape of the information code 100 is detected and the code area of the information code 100 can be extracted, the information (format information) at the predetermined position 105 of the information code 100 is decoded, and the type of the captured information code and Get mask correction level. Specifically, for example, as described above, the information recorded at the predetermined position 105 is attempted to be decrypted by canceling the mask processing based on the above-described specific mask (frame QR mask). When the check digit matches when the mask processing is canceled by the above-described method for canceling the mask of the specific mask (that is, calculated based on the correction level data and the mask number data when the predetermined position 105 is decoded) When the check digit matches the check digit recorded at the predetermined position 105), it is possible to specify the type of the information code 100 (the type having the free area 110), and an error included in the format information The correction level and mask number can also be acquired. When the mask process can be canceled based on the specific mask as described above (that is, when it is recognized that the information code 100 is the type (frame QR)), the process proceeds to Yes in S41. On the other hand, when the mask processing can be canceled by a mask other than the specific mask (frame QR mask) such as the model 1 mask and the model 2 mask shown in FIG. 6, the process proceeds to No in S41. When the mask process can be canceled by another mask, the two-dimensional code imaged in S40 is a case of a known QR code (registered trademark). Will be decoded and the decoding result will be output. In FIG. 9, the process in the case of No in S41 is omitted.

  When the process proceeds to Yes in S41, first, the data recorded in the data recording area is decoded (S42). Specifically, based on the mask number included in the format information acquired in S40, the mask of the entire code (specifically, the area of the code word) is released. Then, based on the header data (frame QR header) provided at the beginning of the data word, the original code size (the model number and format of the other type code 120) is specified, and the diagram is converted according to the same layout conversion table as in FIG. 5 Return from the information code 100 as shown in the right figure to the original code (another code 120) as shown in the left figure. Specifically, the code word (data code word and error correction code word) of each arrangement candidate position of the information code 100 is arranged in the other type code 120 associated with each arrangement candidate position in the arrangement conversion table. Reposition to the position. By performing the arrangement conversion in this way, another type code 120 in which the data code word and the error correction code word arranged in the information code 100 are recorded is obtained. Since the other type code 120 is a known QR code, the data is decoded in the same manner as the known QR code (that is, error correction calculation is performed by a known method based on the error correction code word). Decode the data code word).

  In this configuration, the control circuit 40 corresponds to an example of a “determination unit”, and when the information code 100 is captured by the imaging unit, it is determined whether or not the predetermined position 105 of the code area has a specific format configuration. To function. Specifically, it functions to determine whether or not a predetermined type of mask pattern (specific mask) is reflected at the predetermined position 105.

  The control circuit 40 corresponds to an example of a “data recording area reading unit” and a “decoding unit”. When the information code 100 is captured by the imaging unit, the data recording area in the code image of the captured information code 100 And functions to read data recorded in the data recording area based on the contents of the error correction code recording area. Specifically, when the determination unit determines that the predetermined position 105 has a specific format configuration (more specifically, when a predetermined type of mask pattern is reflected at the predetermined position 105), the correspondence information recording unit The position of each data word in the code area is specified based on the correspondence information (arrangement conversion table) recorded in (1), and the decoding target data is decrypted.

  The arrangement conversion table corresponds to an example of “correspondence information”, and a data word in each order represented by each arrangement position in the code area is determined in advance in another type code 120 different from the information code 100. It is configured as information for determining each corresponding position in the other type code 120 when expressed in (for example, a method defined in a known standard or the like). Then, when the determination unit determines that the predetermined position 105 has a specific format configuration, the control circuit 40 corresponding to the decoding unit converts the data word in each order represented by each arrangement position of the code area to the correspondence information The other-type code 120 functions in such a manner as to be replaced with each corresponding position in the other-type code 120 defined in (1).

  After decoding the data in the data recording area in S42, the format information included in the header data (frame QR header) is read. If the format information is format information indicating an “image format” (a format having a recognition target area), the process proceeds to Yes in S44. For other formats, the process proceeds to No in S44. In FIG. 9, the process in the case where the process proceeds to No in S44 is omitted. In addition, when progressing to No by S44, you may complete | finish the process of FIG. 10, without performing the process after S11.

  When the process proceeds to Yes in S44 (that is, when the format information included in the header data (frame QR header) is format information indicating “image format”), the image area position information (position data) included in the header data is read. (S45). Then, the position of the image area in the information code 100 (the position of the recognition target area 121) is specified (S46). Specifically, in this configuration, it is assumed that a rectangular image region is formed, and in S46, the code image is analyzed to specify the positions of the four corners of the image region in the code image. For example, when position information (for example, a combination of a column position and a row position at each position of the four corners) of the recognition target area 121 (image area) is recorded as the image area position information (position data), the position data The positions of the four corners of the image area can be specified by.

  After identifying the positions of the four corners of the recognition target area 121 (image area) in S46, the image of the recognition target area 121 is extracted. Note that the image extracted in S47 may be, for example, a bitmap format, or may be another known image file format such as a GIF format or a JPEG format. Note that the control circuit 40 that performs the processes of S46, S47, and the like corresponds to an example of an image extraction unit, and extracts an image of the recognition target area 121 configured in the empty area 110 when the information code 100 is captured. To work.

  When the process of FIG. 11 is completed, the process of S11 scheduled after the process of S10 is performed. In this process, a site specified by the address information is accessed according to the address information recorded in the data recording area. In the information code 100 shown in FIG. 1, FIG. 9, etc., for example, the URL of a specific search site is recorded as address information. Become. For example, when the Internet site specified by the address information recorded in the information code 100 is a search site provided by the management device 190 shown in FIG. The image of the target area 121 (specific area) is transmitted to the search site (S12). In the process of S12, specifically, the image of the recognition target area 121 (specific area) is transmitted to the management apparatus 190 that provides search site information on the Internet.

  Then, according to the processing of S12, the search destination of the transmission destination, that is, the management apparatus 190 performs similar image search using the image (search target image) transmitted in S12. As described above, in the management apparatus 190 that provides search site information on the Internet, a plurality of search candidate image data is registered in a storage unit (not shown). Each search candidate data registered in the management apparatus 190 includes image data representing the appearance of each search candidate in addition to basic data such as the name and type of each search candidate. In the process of S13, an image similar to the search target image transmitted in S12 is extracted from the image data of the plurality of search candidates registered in this way. Such similar image search processing can use, for example, known various types of similar image search techniques (known techniques for extracting an image satisfying a predetermined similarity criterion as a similar image), for example, a known pattern You may perform by a matching process, the comparison process of a feature point, etc.

  In this configuration, for example, the reading device 10 and the management device 190 correspond to an example of a search processing unit. More specifically, a control circuit 40 that executes the process of FIG. 10 and a storage unit provided in the management apparatus 190 with search candidate images similar to the search target image transmitted in S12 after the process of S12 A control unit (a control unit such as a CPU provided in the management apparatus 190) that performs a search process from the functioning unit functions as a main element of the search processing unit.

  After the process of S13, information on each candidate extracted as a similar image in the process of S13 is displayed as a search result (S14). For example, in FIG. 12, a search result when a similar image search is performed in the storage unit of the management apparatus 190 using the search target image T1 as shown in FIGS. An example is shown.

  Then, it is determined whether or not any item has been selected according to the display of the search result in S14 (S15). If selected, the process proceeds to Yes in S15, for example, the selected item. A predetermined order screen for purchasing is displayed (S16). If the order processing on the purchase screen is confirmed, the process proceeds to Yes in S17, and the confirmed article order procedure is performed. The order procedure may be a known procedure used in electronic commerce.

(Example effect of this configuration)
According to this configuration, an information code medium that displays a characteristic information code (for example, a medium in which the information code 100 is formed on an object to be formed such as paper, a resin member, or a metal member) is to be read and recognized. When the information code medium is imaged in a state where the search target is represented in the area 121, a predetermined search process for searching for the search target represented in the recognition target area 121 can be performed. In particular, the reading side can recognize the search target image T1 by a simple reading operation of reading the information code 100 in a state where the search target is represented in the recognition target area 121, and the search using the search target image T1 can be performed more. It can be done smoothly.

Further, in this configuration, the information code 100 has an empty area 110, which is an area in which no decoding target data is recorded by a cell, at a position other than the specific pattern area and the data recording area within the code area. A size larger than the size is provided, and the inside of the empty area 110 is set as a recognition target area. Then, the image extraction unit provided in the reading system is configured to extract the image T1 of the recognition target area configured in the empty area 110 when the information code 100 is captured.
According to this configuration, an area (empty area) in which the decoding target data is not recorded by the cell is secured at a position other than the data recording area and the specific pattern area in the code area, and this empty area is used as the recognition target area 121. An information code can be read. Then, the content represented in the recognition target area 121 of the information code 100 can be extracted as an image T1, and the search process can be smoothly performed using the image T1 as a condition.

  In addition, in the information code 100 illustrated in FIG. 1, FIG. 9, and the like, the image to be searched is configured in advance in the recognition target area 121, and the search processing unit includes a plurality of search candidates prepared in advance. A predetermined similar image search process for searching for an image similar to the search target image T1 shown in the recognition target area 121 is performed. According to this configuration, it is possible to search for a search target with a simpler operation. In addition, since a region whose position is clearly defined in advance can be used as a recognition target region, it is possible to more accurately specify a range in which a search image is to be extracted as compared with a method in which a search target is simply photographed. This makes it easy to omit complicated operations during the extraction.

Further, in this configuration, in the data recording area of the information code 100, address information for specifying a search destination image T1 or a transmission destination of data obtained by analyzing the search target image T1 is recorded. The search processing unit is configured by the reading device 10 and the management device 190, and the search target image T1 or the data obtained by analyzing the search target image T1 is sent to the transmission destination specified by the address information. Based on the data received by the receiving unit, the transmitting unit for transmitting, the receiving unit for receiving the data transmitted from the transmitting unit, the storage unit for storing candidate images each representing a plurality of search candidates, A similar image extraction unit that extracts a predetermined similar image similar to the image to be searched from a plurality of stored candidate images;
According to this configuration, the image T1 in the recognition target area 121 and the address information recorded in the data recording area can be used in association with each other. For example, when the information code 100 is read, the search target image T1 or data obtained by analyzing the search target image T1 is automatically transmitted to the transmission destination specified by the address information recorded in the data recording area. Thus, the search process can be performed at the transmission destination. In particular, every time an information code is read, it is not necessary to perform an input operation of address information for specifying a transmission destination, and it is possible to reliably suppress work burdens and input errors associated with the input operation.

  In this configuration, position data indicating the position of the recognition target area 121 in the code area is recorded in the data recording area of the information code 100. The search processing unit specifies the position of the recognition target area 121 in the code area based on the position data read by the data recording area reading unit, and performs a search process using the image T1 of the recognition target area 121. It has a configuration. According to this configuration, at the time of reading, the position of the recognition target area 121 in the code image can be more accurately specified based on the position data recorded in the data recording area.

  Further, in this configuration, identification information indicating that the recognition target area 121 exists in the code area is recorded in the data recording area of the information code 100. The search processing unit is configured to perform a search process on the condition that identification information is recorded in the data recording area based on the reading result of the data recording area by the data recording area reading unit. According to this configuration, at the time of reading, it becomes easy to determine whether or not the recognition target area exists in the code area based on the presence or absence of the identification information.

[Second Embodiment]
Next, a second embodiment will be described with reference to the drawings.
The information code utilization system of the second embodiment is the same as that of the first embodiment with respect to the hardware configuration, and the configuration shown in FIGS. 1 and 2 described above is used. In the second embodiment, the configuration of the information code is different from that in the first embodiment, but the method for using the image in the empty area can be the same as that in the first embodiment and other embodiments. .

  In the information code utilization system of the second embodiment, the information code 200 as shown in FIG. 13B is generated by the information code generator 2 (see FIG. 1 and the like). Even in this configuration, a specific pattern area in which a specific pattern (position detection pattern 204) having a predetermined shape is arranged inside the code area, a data recording area in which data is recorded by a plurality of types of cells, and information code reading A recognition target area 121 that is a target for which a predetermined search process is performed by the apparatus 10 is provided.

  In this configuration, the configuration other than the configuration in the empty area 210 is configured as a known QR code (registered trademark). First, as shown in FIG. A recording area and an error correction code recording area for recording an error correction code by a plurality of types of cells are provided. The recording method of the data code word in the data recording area and the recording method of the error correction code word in the error correction code recording area are the same as the known QR code (registered trademark), for example, a method defined in JISX0510 The arrangement of the position detection pattern 204 in the code area, the arrangement of the data code word in the data recording area, and the arrangement of the error correction code word in the error correction code recording area are determined.

  However, as shown in FIG. 13A, an information code 200 ′ in which a code word in a partial area is configured as a code word expressed only by white cells is generated, and thus an area expressed only by white cells. AR is a free area 210, and a part or all of the free area 210 is a recognition target area 121 as shown in FIG. In the example of FIG. 13B, an example in which the entire free area 210 is the recognition target area 121 is shown. In the example of FIG. 13B, a search target image T1 similar to that in the first embodiment is represented in the empty area 210. When configured in this way, the configuration is different from the original data display as shown in FIG. 13A, but the error in the data in the empty area 210 is corrected by the error correction recorded in the error correction code recording area. A known error correction may be performed using a code.

  Further, in the information code 200 shown in FIG. 13B, the position of the empty area 210 is specified in advance. Therefore, when the design and information are added and displayed in the empty area 210, the error position by this display is set in advance. I know that. Therefore, the error correction code in the error correction code recording area can be configured to perform erasure correction using the position of the empty area 210 as the error position. In this case, information indicating the position of the vacant area 210 is recorded in the data recording area in advance, or stored in the reading apparatus 10 (FIG. 1) in advance, so that the reading apparatus 10 can read the vacant area at the time of reading. The position of 210 (that is, the position of the data code word in which an error has occurred) can be specified, and the reader 10 can determine the position of the data code word existing in the empty area 210 whose position is specified in this way. In order to correct the error, the erasure correction may be performed using the error correction code recorded in the error correction code recording area.

  Further, when a part of the existing QR code (registered trademark) is configured as the empty area 210 as shown in FIG. 13, the identification information as shown in FIG. 15A is included in the data recorded in the data recording area. Just keep it. FIG. 15A conceptually shows the structure of the data to be decrypted recorded in the data recording area. In this example, data of a predetermined structure (%% IMAGE %%) is present at the beginning of the data to be decrypted. It is attached. With this configuration, when the reader 10 detects this identification information (%% IMAGE %%) from the decryption target data recorded in the data recording area, the reader 10 displays the image of the recognition target area 121. The used search process (for example, the same process as in FIG. 10 of the first embodiment) can be performed. Conversely, when the identification information (%% IMAGE %%) cannot be detected, the normal decode process is performed. become. In this example, it is desirable that the data in the data recording area includes position data for specifying the position of the image area and other accompanying information in addition to the normal data. Further, the data shown in FIG. 15 (A) indicates the data to be decoded that is arranged before the end terminal in the data recorded in the data recording area, and the padding that is arranged after the end terminal. The code is omitted. In this configuration, for example, the entire area of the padding code can be displayed with only white cells, and this area can be handled as the empty area 210.

  Moreover, the example of identification information is not restricted to this example, For example, you may make it use a mode number for exclusive use as a mode number. For example, in the QR code standard, 1: numeral mode, 2: alphanumeric mode, 3: concatenation mode, etc. are defined, and 14: image recognition mode (search mode) is provided as one of such mode numbers. You may do it. In such an example, when the mode number “14” is set, a search process using the image of the recognition target area 121 may be performed.

[Third Embodiment]
Next, a third embodiment will be described.
The information code utilization system of the third embodiment is the same as that of the first embodiment in terms of hardware configuration, and the configuration as shown in FIGS. 1 and 2 is used.

  In the information code utilization system of the third embodiment, the information code 300 as shown in FIG. 14B is generated by the information code generation device 2 (see FIG. 1 and the like). Even in this configuration, a specific pattern having a predetermined shape (L-shaped alignment pattern 304a and light cells and dark cells are alternately arranged one by one inside the code region, and L along the boundary of the code region. A specific pattern area in which a timing pattern (timing cell) 304b) constituting a character-shaped area is arranged, and a data recording area in which data is recorded by a plurality of types of cells are provided. The empty area 310 in which at least one of data recording and design display can be performed at a position different from the method of recording data in the data recording area is set to a predetermined size larger than the size of a single cell. Is provided.

  In this configuration, except for the configuration of the empty area 310, it is configured as a known data matrix code. First, as shown in FIG. 14A, a specific pattern area, a data recording area, An error correction code recording area for recording an error correction code by a plurality of types of cells is provided. The recording method of the data code word in the data recording area and the recording method of the error correction code word in the error correction code recording area are the same as the known data matrix code, and the alignment pattern 304a and timing pattern 304b in the code area. The arrangement of the data code word in the data recording area and the arrangement of the error correction code word in the error correction code recording area are determined in accordance with, for example, the ECC200 version.

  However, as shown in FIG. 14A, an information code 300 ′ in which a code word of a partial region is configured as a code word expressed only by white cells is generated, and thus the region expressed only by white cells. AR is a free area 310, and as shown in FIG. 14B, a part or all of this free area 310 is used as a recognition target area 121 to represent a search target image T1. FIG. 14B shows an example in which the entire empty area 310 functions as the recognition target area 121. When the free area 310 is set as the recognition target area 121 as shown in FIG. 14B, the configuration is different from the original data display as shown in FIG. In other words, known error correction may be performed using the error correction code recorded in the error correction code recording area.

  In addition, in the information code 300 shown in FIG. 14B, the position of the empty area 310 is specified in advance. I know that. Therefore, the error correction code in the error correction code recording area can be configured to perform erasure correction using the position of the empty area 310 as the error position. In this case, information indicating the position of the empty area 310 is recorded in the data recording area in advance, or is stored in the reading apparatus 10 (FIG. 1) in advance, so that the reading apparatus 10 can read the empty area at the time of reading. The position of 310 (that is, the position of the data code word in which an error has occurred) can be specified, and the reader 10 can determine the position of the data code word existing in the empty area 310 in which the position is specified in this way. In order to correct the error, the erasure correction may be performed using the error correction code recorded in the error correction code recording area.

  Further, when a part of the existing data matrix code is configured as the empty area 310 as shown in FIG. 14, the identification information as shown in FIG. 15B should be included in the data recorded in the data recording area. Good. FIG. 15B conceptually shows the structure of data to be decrypted recorded in the data recording area. In this example, data of a predetermined structure (%% IMAGE %%) is present at the beginning of the data to be decrypted. It is attached. With this configuration, when the reading apparatus 10 detects this identification information (%% IMAGE %%) from the decoding target data recorded in the data recording area, the reader 10 displays the image of the recognition target area 121. The search processing used can be performed. Conversely, when the identification information (%% IMAGE %%) cannot be detected, the normal decoding processing is performed. In this example, it is desirable that the data in the data recording area includes position data for specifying the position of the image area and other accompanying information in addition to the normal data.

  Moreover, the example of identification information is not restricted to this example, For example, you may make it use a codeword for exclusive use. As the specification of the data matrix code, for example, when 0 to 128 is defined as an ASCII character and 233 is a connection mode, “234” may be newly defined as a special code word for image recognition. In such an example, when the code word “234” is included in the data in the data recording area, a search process using the image of the recognition target area 121 may be performed. In addition, when there is an unused code word, the unused code word is included as identification information, and when the unused code word is included in the data of the data recording area, Search processing using an image may be performed.

[Fourth Embodiment]
Next, a fourth embodiment will be described.
The information code utilization system of the fourth embodiment is the same as that of the first embodiment in terms of hardware configuration, and the configuration as shown in FIGS. 1 and 2 described above is used. In particular, the hardware configurations of the generation device 2 and the reading device 10 are the same as those in the first embodiment, and therefore will be described with reference to FIGS. 1 and 2 as appropriate.

  The information code 400 used in the fourth embodiment is different from the information code 100 of the first embodiment only in the contents of the empty area 410, and other specific pattern areas and data recording areas are configured in the first embodiment. Is the same as the information code. The configuration of the specific pattern arrangement area and the data recording area may be exactly the same as in the first embodiment, or the arrangement may be slightly different. The position of the empty area 410 is not particularly limited, and may be provided at the same position as the empty area 110 of the information code 100 of the first embodiment, or may be a position different from the empty area 110.

  As shown in FIGS. 16A and 16B, the information code 400 generated by the generating device 2 has a predetermined shape inside a rectangular code area (for example, a square shape or a rectangular shape). A specific pattern area in which a specific pattern is arranged, a data recording area in which data is recorded by a plurality of types of cells 102, and an error correction code recording area in which an error correction code is recorded by a plurality of types of cells 102 are provided. Also in this configuration, the specific pattern is the same as that of the first embodiment, for example, the same shape and position as a specific pattern of a known predetermined model number of a QR code (registered trademark), as shown in FIG. In such an example, a position detection pattern (cutout symbol) 104 as a specific pattern is arranged at each of the three corners of the code area.

  In this system, for example, the generation apparatus 2 forms the information code 400 in a configuration in which the position detection pattern 104 and other cell graphics are printed on a predetermined formation target medium 401. The formation target medium 401 is made of a paper material, a resin material, a metal material, or other known materials, and is, for example, a sheet or plate having a predetermined thickness. Note that the formation target medium 401 may have any configuration as long as the information code 400 can be formed on one side and a window can be formed, and the specific shape is not particularly limited. For example, a configuration in which a plurality of materials are stacked may be used.

  The information code 400 formed by the generating device 2 is expressed by a known forming method such as printing or direct marking in a specific pattern area, a data recording area, and a correction code recording area in a predetermined area on the surface 401a of the formation target medium 401, for example. Has been. The specific pattern area, the data recording area, and the correction code recording area formed on the formation target medium 401 may be formed so as to be visible from the surface 401a side, and the formation position is not limited to the surface 401a. Absent. For example, a specific pattern area, a data recording area, and a correction code recording area are formed on the surface of a member made of paper material, resin material, metal material, etc., and a transparent sheet-like or plate-like member is arranged thereon to cover it. You may do it. In this configuration, the surface of the transparent member is the front surface 401a, and the specific pattern area, the data recording area, the correction code recording area, and the like are formed at positions on the back side (back side) from the front surface 401a. In any case, the specific pattern area, the data recording area, and the correction code recording area can be visually recognized from the surface 401a side of the forming target medium 401, and the specific pattern area, the data recording area, and the correction code recording area are formed on the formation target medium 401. Should just be formed.

  In the formation target medium 401, a window portion 403 is provided on the inner side of the outer edge portion of the code area so as to visually recognize the back surface 401b side from the front surface 401a side. In the example shown in FIG. 16 and the like, the window portion 403 is formed as a rectangular through hole, and this through hole is configured to continue between the front surface 401a and the back surface 401b. When forming the information code medium with the information code 400 as shown in FIG. 16, the medium to be formed (paper material, resin material, metal material, other material before forming the window portion 403 by the generating device 2) A specific pattern area, a data recording area, and a correction code recording area are formed on a sheet-like or plate-like member). 400 may be obtained. Alternatively, a window 403 is formed on a sheet-like or plate-like member made of a paper material, a resin material, a metal material, or other material, and a formation target medium 401 is created in advance, and the generation target medium 401 is generated. The apparatus 2 may form a specific pattern area, a data recording area, and a correction code recording area to obtain an information code 400 as shown in FIG. In this example, the opening area inside the window 403 corresponds to the light transmission area.

  In the information code 400 configured as described above, a partial area in the code area (a recognition target area that is an internal area of the window 403) functions as a display target area to be searched. At the time of reading, the information code reading device 10 can display a search target image to be subjected to a predetermined search process in the code area. For example, as shown in FIG. 17, when a subject 430 on which an image T <b> 2 of an article to be searched is captured and used as an image, an area of the subject 430 that is desired to be used as an image fits in the window 403. The formation target medium 401 may be disposed on the subject. In this way, as shown in FIG. 17, in the synthesis unit in which the information code 400 and the subject 430 overlap each other, the search target image T2 (the region disposed in the window 403 in the subject 430, that is, the surface 401a). The area visually recognized from the side through the window portion 403) is represented in the code area of the information code 400. In this example, the inside of the window 403 in the information code 400 is an empty area 410. For example, data is not recorded in the data recording area and is not subject to error correction by the error correction area. Yes. In FIG. 17, the subject 430 is illustrated as an example of the subject, but the subject example is not limited to this, and various images such as an image of the image area shown in the above-described embodiment are used as subjects. Can do.

  Then, the information code 400 and the subject 430 represented as shown in FIG. 17 are imaged by the reading device 10 as shown in FIG. 18A, so that the search target area is searched as shown in FIG. A captured image 400 ′ (code image) representing the image T2 is obtained. Note that the image in FIG. 18B is obtained by cutting out only the image in the code area from the image captured by the reading device 10. In the captured image 400 ′, the image 410 ′ in the empty area 410 is the image of the recognition target area, and the image 410 ′ includes the captured image T <b> 2 ′ obtained by capturing the search target image T <b> 2. From the captured image 400 ′ thus obtained, the information code 400 can be read by the same method as in the first embodiment, and the image 410 ′ of the empty area 410 is extracted by the same method as in the first embodiment. A search process using the captured image T2 ′ to be searched can be performed. The search process after extracting the image of the empty area 410 is the same as the process after S12 in FIG.

  According to this configuration, a characteristic information code in which the specific pattern area, the data recording area, and the window are formed can be formed on the formation target medium by the information code generation apparatus. When the information code reader images the formation target medium and reads the information code, the contents grasped from the surface side of the formation target medium through the window portion can be recognized as an image. In particular, as the information code is read, in addition to the use of data recorded in the data recording area, an image of a subject (a subject grasped through the window) that has not been displayed in advance on the formation target medium is used. An image utilization method becomes possible, and the convenience for the user can be enhanced. When reading the information code, if the position is adjusted so that only the necessary range of the subject located behind the medium to be formed can be seen through the window, the image in the required area is selectively used. As a result, the convenience in using the image is further enhanced.

  Note that the image processing method for the image after extracting the image of the image area (the image 410 ′ of the empty area 410) may use any of the processing methods of the above-described or later-described embodiments.

  In the example described above, the window portion 403 configured as a through hole is illustrated, but the window portion 403 may be configured so that the back side can be visually recognized. For example, the transparent member (transparent resin sheet etc.) may be arrange | positioned so that the square-shaped through-hole mentioned above may be block | closed, and the structure which can visually recognize a back side through this transparent member may be sufficient. Further, the shape of the window portion 403 is not limited to a square shape, and may be a circular shape, an elliptical shape, a triangular shape, another polygonal shape, or the like.

[Fifth Embodiment]
Next, a fifth embodiment will be described.
The information code utilization system of the fifth embodiment is the same as that of the first embodiment in terms of hardware configuration, and the configuration as shown in FIGS. 1 and 2 is used. In particular, the hardware configurations of the generation device 2 and the reading device 10 are the same as those in the first embodiment, and therefore will be described with reference to FIGS. 1 and 2 as appropriate.

  The information code 500 used in the fifth embodiment is different from the information code 100 of the first embodiment only in the contents of the empty area 510. Other specific pattern areas and data recording areas are configured in the first embodiment. Is the same as the information code. The configuration of the specific pattern arrangement area and the data recording area may be exactly the same as in the first embodiment, or the arrangement may be slightly different. The position of the empty area 510 is not particularly limited, and may be provided at the same position as the empty area 110 of the information code 100 of the first embodiment, or may be a position different from the empty area 110.

  As shown in FIG. 19, in the information code 500 generated by the generation device 2, a specific pattern having a predetermined shape is arranged inside a rectangular code area (for example, a square shape or a rectangular shape). A specific pattern area, a data recording area for recording data by a plurality of types of cells 102, and an error correction code recording area for recording error correction codes by a plurality of types of cells 102 are provided. Even in this configuration, the specific pattern is the same as that of the first embodiment. For example, the specific pattern has the same shape and position as a specific pattern of a known predetermined model number of QR code (registered trademark). Then, a position detection pattern (cutout symbol) 104 as a specific pattern is arranged at each of the three corners of the code area.

  In this system, for example, the generation apparatus 2 forms the information code 500 with a configuration in which the position detection pattern 104 and other cell graphics are printed on a predetermined formation target medium 501. The formation target medium 401 is made of a paper material, a resin material, a metal material, or other known materials, and is, for example, a sheet or plate having a predetermined thickness. The formation target medium 501 may have any configuration as long as the information code 500 can be formed on one side, and the specific shape is not particularly limited. For example, a configuration in which a plurality of materials are stacked may be used.

  The information code 500 formed by the generation device 2 is expressed by a known formation method such as printing or direct marking in a specific pattern area, a data recording area, and a correction code recording area on a predetermined area of the surface 501a of the formation target medium 501. Has been. The specific pattern area, the data recording area, and the correction code recording area formed on the formation target medium 501 may be formed so as to be visible from the surface 501a side, and the formation position is not limited to the surface 501a. Absent. For example, a specific pattern area, a data recording area, and a correction code recording area are formed on the surface of a member made of paper material, resin material, metal material, etc., and a transparent sheet-like or plate-like member is arranged thereon to cover it. You may do it. In this configuration, the surface of the transparent member becomes the front surface 501a, and the specific pattern area, the data recording area, the correction code recording area, and the like are formed at positions on the back side (back side) from the front surface 501a. In any case, the specific pattern area, the data recording area, and the correction code recording area are formed on the formation target medium 501 in a configuration in which the specific pattern area, the data recording area, and the correction code recording area are visible from the surface 501a side of the formation target medium 501. Should just be formed.

  As shown in FIG. 19, in the formation target medium 501, a writable area that allows postscript description such as characters and pictures is provided inside the outer edge of the code area. In this configuration, an inner area where the cell 102 is not arranged in the information code 500 (an area inside the inner edge boundary of the arrangement area of the cell 102) is a free area 510. The empty area 510 is an area in which data is not recorded by, for example, a data recording area and is not subject to error correction by the error correction area, and the entire empty area 510 is a writable area. The empty area 510 is, for example, a blank area of a predetermined color, and characters, figures, symbols, etc. can be written by hand with various writing tools in this blank area. For example, FIG. 20A shows an example in which the picture T3 to be searched for is written in the empty area 510 by handwriting. It should be noted that figures and characters such as a frame may be written in advance in the empty area 510 before handwritten input.

  Then, the information code 500 represented as shown in FIG. 20A is imaged by the reading device 10 as shown in FIG. 20B, whereby a captured image as shown in FIG. 21 is obtained. Note that the image in FIG. 21 is obtained by cutting out only the image in the code area from the image captured by the reading device 10. The information code 500 can be read by the same method as in the first embodiment from the image in the code region thus obtained, and the image 510 ′ of the empty region 510 is extracted by the same method as in the first embodiment. be able to. The search process after extracting the image of the empty area 510 is the same as the process after S12 in FIG. It should be noted that the search processing using the image after extracting the image 510 ′ of the empty area 510 may use any of the processing methods of the embodiments described above or described later.

As described above, in this configuration, the specific pattern area and the data recording area can be visually recognized from the front surface side of the formation target medium 501 having the predetermined front and back surfaces. It is supposed to be formed. Then, in the formation target medium 501, a descriptionable area (empty space) that allows a subsequent description of the search target as a recognition target area inside the outer edge of the code area in which the specific pattern area and the data recording area are represented. Region 510) is provided. Then, when the information code medium is imaged in a state where the search target is described in the writable area, the reading device 10 and the management device 190 corresponding to the search processing unit can search for a plurality of search candidates prepared in advance. A predetermined similar image search process for searching for an image similar to the captured image T3 ′ to be searched described in the writable area is performed from the images.
According to this configuration, it becomes possible to use the contents described later in a predetermined area of the formation target medium 501 as a search condition. In particular, since the area where the position is clearly defined in advance can be used as the writable area, it is possible to extract the description contents of the necessary range more accurately compared to a method of simply taking a picture of the description contents, It becomes easy to omit complicated work in the extraction.

[Modification of Fifth Embodiment]
Next, a modified example of the fifth embodiment will be described.
In the above-described example of the fifth embodiment, an example in which a search target is described by handwriting or the like in the free area 510 of the information code medium shown in FIG. 19 is shown. However, in the free area 510 of the information code medium shown in FIG. The search target itself or an object representing the search target may be arranged so as to be overlapped, and an image of the search target may be acquired by capturing these images with the reading device 10. For example, if a predetermined clock is a search target, the search target clock itself is arranged so as to overlap the free area 510 of the information code medium shown in FIG. (An image to be searched) may be acquired, and an object (for example, a magazine clipping or a photograph) representing the clock to be searched is placed so as to be superimposed on the empty area 510, and these are imaged by the reading device 10. The image to be searched for may be acquired by.

  Also in this example, as shown in FIG. 19, the specific pattern area and the data recording area are formed on the formation target medium 501 in such a configuration that the specific pattern area and the data recording area can be visually recognized from the front side of the formation target medium 501 having the predetermined front and back surfaces. A recording area is formed. In this formation target medium 501, an empty area 510 as a recognition target area is provided on the inner side of the outer edge of the code area where the specific pattern area and the data recording area are represented. The empty area 510 functions as a placeable area in which a search target or an object representing the search target can be superposed and placed later.

  Even when such an information code medium is used, the processing after imaging of the information code 500 is the same as that in the above embodiment, and the search target or the object representing the search target (for example, the empty area 510) (for example, When the information code medium is imaged in a state in which photographs or magazines showing articles to be searched are overlapped, an image similar to FIG. 21 (an image to be searched T3 ′ is an image of the empty area 510) A code image 500 ′) represented in 510 ′ is obtained. Then, after extracting the image of the empty area, the same processing as S12 and subsequent steps in FIG. 10 is performed, and the search target that is represented by overlapping with the arrangement possible area is selected from the plurality of search candidate images prepared in advance. A predetermined similar image search process for searching for an image similar to the captured image T3 ′ may be performed.

  According to this configuration, an object (such as the object itself or a picture displayed on the object) that is subsequently arranged in a predetermined area of the formation target medium 501 can be used as a search condition. In particular, since a region whose position is clearly defined in advance can be used as a placeable region, an object in the necessary range can be extracted more accurately compared to a method of simply photographing an object, and the extraction This makes it easier to omit complicated tasks.

[Sixth Embodiment]
Next, a sixth embodiment will be described.
In the example of the sixth embodiment, the process of FIG. 22 is performed instead of the search process of FIG. 10, and the condition information (auxiliary information) is recorded in the data recording area, and S12 of FIG. , S13 is different from the first embodiment only in that the search using the condition information is performed, and the other points are the same as in the above embodiment. Note that such a method of using condition information can be used in any of the embodiments.

  In this configuration, in the data recording area of the information code 100 shown in FIG. 9 and the like, information specifying the type of search target (information such as “scanner” in this example) is recorded as condition information. Then, the reading device 10 and the management device 190 corresponding to the search processing unit obtain the condition information read from the data recording area and the search target represented in the recognition target area in the processes of S12 and S13 in FIG. Based on the image, a search is made for an image that matches the search condition specified by the condition information and is similar to the search target represented in the recognition target area from a plurality of search candidate images prepared in advance. Yes. The auxiliary information is not limited to the item type to be searched, and may be size, color, size, material, and the like.

  According to this configuration, necessary search conditions can be prepared in the data recording area in advance, and it is possible to save time and labor for designating the conditions at the time of search, so that it is easy to save labor and speed. In addition, since it is possible to perform a search in consideration of not only the image of the recognition target area but also other conditions, it is easy to improve the accuracy of the search. For example, in the above-described example, an image similar to the search target image T1 can be searched after narrowing down to the search target type (for example, scanner). Irrelevant types of similar images such as toys) are not extracted.

[Seventh Embodiment]
Next, a seventh embodiment will be described.
In the example of the seventh embodiment, the processing of FIG. 24 is performed instead of the reading processing of FIG. 11, and condition information (for example, information on the type of search target) is stored in the empty area 510 as shown in FIG. Only the points that can be described and the search using the condition information in the processing of S12 and S13 in FIG. 10 are different from the fifth embodiment, and other than that is the same as the fifth embodiment. . Note that such a method of using condition information can be used in any of the embodiments.

  In this example, in addition to the description of the image (search target image T3) as shown in FIG. 23A, symbol information such as character information (for example, character information indicating the type of search target) is included in the condition information (auxiliary information). ) Can be described. Then, in the reading device 10 and the management device 190 corresponding to the search processing unit, the search target is represented in the recognition target area (empty area 510) as shown in FIG. 23A, and symbol information (for example, When the information code medium is imaged in a state in which the character information indicating the type of search target is displayed, in the reading process of FIG. 24, the OCR recognition in S48 (for example, a known optical character recognition process) The symbol information in the recognition target area (free area 510) can be recognized. In the processes of S12 and S13 in FIG. 10, a plurality of searches prepared in advance based on the captured image to be searched extracted from the recognition target area (empty area 510) and the symbol information recognized by the OCR process. An image that matches the condition specified by the symbol information and is similar to the search target represented in the recognition target area is searched from the candidate images. For example, in the case where “TEBUKURO” is described as shown in FIG. 23A, the search target T3 represented in the recognition target area (free area 510) is selected from the registration candidates belonging to the “TEBUKURO” type. A similar image is searched. Also in this example, the condition information (auxiliary information) described in the empty area 510 is not limited to the item type to be searched, and may be a size, a color, a size, a material, and the like.

  In this way, if the search process is performed on the condition of the image and the symbol, the narrowing down can be performed efficiently. In particular, if a search is performed using only a single image, there may be a large number of candidates that match this image condition. However, if a search is performed using not only images but also symbols such as characters, the condition Can be narrowed down effectively, and it becomes easy to quickly extract the target contents.

[Eighth Embodiment]
Next, an eighth embodiment will be described.
The example of the eighth embodiment is different from the first embodiment in that the process of FIG. 25 is performed instead of the reading process of FIG. 11, and other than that is the same as the first embodiment. Note that such a method of using condition information can be used in any of the embodiments.

  In this configuration, in the reading device 10 and the management device 190 corresponding to the search processing unit, when a plurality of information codes whose search targets are represented in the recognition target area are captured at the same time or in a predetermined continuous state, Based on the display contents represented in each recognition target area in the plurality of information codes, it is similar to the search target represented in each recognition target area from a plurality of search candidate images prepared in advance. Search for an image.

  There are various methods for reading the plurality of information codes 100. For example, when a plurality of information codes 100 each representing a different image of a search target are captured at the same time, a plurality of information codes 100 registered in advance are recorded. A candidate similar to all search target images in the plurality of information codes 100 included in the captured image may be extracted from the registered candidate images.

  Alternatively, when a plurality of information codes are sequentially captured and read, candidates similar to all search target images in the plurality of information codes 100 included in the captured images may be extracted. An example of this method is a reading process as shown in FIG. In the example of FIG. 25, in the reading process (S10) executed with the start of the search process in FIG. 9, the reading process is performed in the flow as shown in FIG. In this process, it is determined whether or not the identification information indicating the division of the recorded content (divided information indicating that the recorded content is represented by a plurality of information codes) exists in the information code 100 that is first imaged and decoded. (S52) If there is no division information, the process proceeds to No in S52. In this case, in S51, the same processing as in FIG. 10 is performed, and in the search processing in FIG. 9, the same search as in each of the above-described embodiments is performed. On the other hand, if the division information exists, the process proceeds to Yes in S52, and the next information code is read (S53). This reading process is performed in the same flow as in FIG. 10, and the image of the recognition coping area is also extracted. After S53, it is determined whether or not the division is completed (that is, whether or not the number of divisions specified by the first read information code has been reached), and if yes, the process proceeds to Yes in S54. If not, the process proceeds to No in S54. Even with such a method, a plurality of information codes 100 can be read, and an image to be searched can be extracted from each information code 100. Even in this case, a similar image search may be performed using a plurality of extracted images.

  In this way, if the search process is performed using a plurality of images as conditions, narrowing down can be performed efficiently. In particular, if a search is performed using only a single image, there may be an enormous number of candidates that match this image condition. The target content can be quickly extracted easily.

  When searching with a plurality of search target images, an image similar to all of the plurality of images may be searched, or an image similar to at least one of the search target images may be searched. Alternatively, an image similar in color to other images may be narrowed down from images similar to at least one of the search target images.

[Other Embodiments]
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  In the first embodiment and the like, the position data (for example, the image area position information shown in FIG. 3) indicating the position of the image area (recognition target area) is included in the information code 100. It is not limited to this example. For example, the information code generating device 2 may be configured to generate the information code so that the image area (recognition target area) is arranged at a predetermined position in the empty area. In this case, information for specifying a predetermined position (information such as image region position information shown in FIG. 3) may be stored in the storage unit 5. Further, in this case, the information code reader 10 stores the specific information (information such as the image area position information shown in FIG. 3) for specifying the predetermined position in the memory 35 as in the information code generator 2. Good. Then, in the information code reader 10, in S45 of FIG. 9, such specific information is read from the memory 35 to specify the information input area, and the subsequent processing may be performed. In this case, the image area position information shown in FIG. 3 may not be included in the header data.

  The present invention can also be configured as a display device capable of displaying any one, plural, or all of the information codes described above. Moreover, it can also be configured as a printing apparatus capable of printing any one, plural or all of the information codes described above. Furthermore, it can also be configured as a computer-readable program for generating any one, plural or all of the information codes described above. Moreover, it can also be comprised as a recording medium which recorded the program for producing | generating the 1 or several or all the information code mentioned above. Furthermore, it can also be grasped as an information code medium (a printed material, a formed material formed by direct marking, etc.) to which one or a plurality of or all information codes are attached. Moreover, it can also be grasped as a display image on which one, a plurality, or all of the information codes described above are displayed.

  1 and the like show an example in which the information code generation device 2 and the information code reading device 10 are configured as separate devices, but the information code generation device 2 may be configured as the information code reading device 10. Good. Moreover, the information code generation device 2 corresponding to the information code generation system may be configured by a single device or may be configured by a plurality of devices. Further, the information code reading device 10 may be configured by a single device or may be configured by a plurality of devices. Moreover, the management apparatus 190 may be comprised by the single apparatus and may be comprised by the some apparatus. For example, in the management device 190, a device that communicates with the reading device 10 and a device that accumulates candidate images as search candidates may be configured by the same device, or may be configured by separate devices. Good.

  In the above embodiment, an example in which the empty area 110 is provided in the center of the code area has been described. However, the arrangement of the empty area 110 is not limited to this example. Similarly, the position of the recognition target area 121 is not limited to the above example. For example, an empty area may be provided near the periphery of the code area, and the recognition target area 121 may be provided at this position. In the above-described embodiment, an example in which the entire free area 110 is the recognition target area 121 (that is, an example in which the free area 110 is the recognition target area 121) is shown. However, a part of the free area 110 is the recognition target area. 121 may be used for other purposes than the search (for example, a simple design display not related to the search, an application other than the search, etc.). In addition, as the design of the recognition target region 121, various other designs can be adopted as long as the configuration includes a figure, a pattern, a color, or a combination thereof. In addition, when information is displayed instead of the design or together with the design, the contents of the information are various.

  In the above embodiment, a QR code is taken as an example of the other type code, and a specific pattern of the QR code is given as an example of the specific pattern used in the information code 100. However, other types of two-dimensional codes may be used. For example, a data matrix code may be used as the other type code, and a specific pattern used in the information code 100 may be used as the specific pattern of the data matrix code.

  The correspondence in the arrangement conversion table set as shown in FIG. 5 can be arbitrarily changed as shown in FIG. For example, when the arrangement conversion table set as shown in FIG. 5 in the information code generating device 2 and the information code reading device 10 is changed as shown in FIG. 7, the generated information code 100 includes the 22nd to 23rd codes. The arrangement of words from the arrangement shown in the right figure of FIG. 5 (the arrangement recorded in the 22nd to 23rd arrangement candidate positions) to the arrangement shown in the right figure of FIG. As a result, the position and shape of the empty area 110 also change. In this case, the arrangement candidate positions Nos. 22 to 23 may be empty areas, or arrangement positions of other code words. That is, in this configuration, the position and shape of the empty area 110 can be adjusted by adjusting the arrangement conversion table, and the degree of freedom in configuring the empty area can be further increased.

  In the above embodiment, an example of the “code area” is shown. However, the “code area” may be a minimum square area or rectangular area that includes all of the plurality of types of cells constituting the information code, and the inner edge of the code area. The cell may not be arranged in a part of the part. For example, as shown in the information code 800 of FIG. 26, the empty area 810 may be formed adjacent to the periphery of the code area. In this case, the minimum square area or rectangular area including all of the plurality of types of cells constituting the information code 800 is as indicated by a one-dot chain line AR, and the outer edge of the empty area 810 is as indicated by a two-dot chain line AR2, for example. Further, the recognition target area only needs to exist at least partially in the code area, and a part of the recognition target area exists in the code area as in the area represented by the symbol AR3 in FIG. May exist outside the code area. In the example as shown in FIG. 27, information for specifying the range of the recognition target area AR3 may be recorded in the data recording area in advance.

  In the above embodiment, a bright cell such as a white cell and a dark cell such as a black cell are exemplified as a plurality of types of cells constituting the code area. However, a specific pattern area, a data recording area, and an error correction code in the code area are exemplified. The recording area may be configured by a first type cell having a predetermined density, luminance, and color, and a second type cell having a different density, luminance, or color from the first type cell. Alternatively, the specific pattern area, the data recording area, and the error correction code recording area in the code area may be configured by three or more types of cells each having different density, luminance, or color.

  In the above embodiment, an example in which a plurality of cells having a square outer shape are arranged in the specific pattern area, the data recording area, and the error correction code recording area in the code area has been described. However, the outer shape of each cell is a square other than a square. It may be a polygon other than a rectangle, or a figure such as a circle or an ellipse.

  In the above embodiment, the position detection pattern 104, the timing pattern 106, the alignment pattern 108, and the like are illustrated as examples of the specific pattern. However, the area is configured as a fixed pattern regardless of the contents of the data recording area and the error correction code recording area. If so, the figure constituting the specific pattern may be another unique figure.

  In the above embodiment, an example of an empty area is shown. However, an empty area is an area where data to be decoded is not recorded by a cell, and information display or image display is performed by a method different from the method of recording data in the data recording area. Any area may be used as long as it is a display area. For example, as in the first embodiment, a vacant area may be configured as an area where no code word is arranged. In a known QR code, an error correction code word that represents an error correction code or data to be decoded is used. An area where a data code word to be expressed is not arranged and a padding code word is arranged may be a free area. Further, in any free area, “information display by a method different from the method of recording data in the data recording area by cell” can be performed, and this information display is exemplified in the above embodiment. In addition to information, other information such as letters, numbers, and other symbols may be used, or a method of displaying information that represents a specific product or service by a trademark or the like may be used. In the empty area, “displaying an image by a method different from the method of recording data in the data recording area by cell” can be performed. This image display is not limited to the image exemplified in the above embodiment. Various shapes, patterns, colors, combinations thereof, and the like can be represented.

Alternatively, the information code 900 in FIG. 28 may be configured. In this example, the same empty area as that of the first embodiment is provided, but only the specification of the empty area is different from that of the first embodiment. In the example of FIG. 28, the specific contents of the areas other than some of the specific patterns are omitted, and in fact, light cells and dark cells are arranged in the external area outside the empty area 910. Become. In the free space 910, for example, an image similar to the free space 110 of the first embodiment or an image similar to the free space of other embodiments is displayed.
Also in this configuration, a plurality of model numbers are prepared for the type of the information code 900. For each model number, the number of rows and columns of cells, the shape and position of a specific pattern, the position of format information, and the candidate position (address) of a code word Is predetermined. When the generating device 2 generates the information code 900, the model number information is arranged at a predetermined position in the code area (the reserved area 107 in the example of FIG. 28). Therefore, when the reading device 10 reads the information code 900, the code image of the information code 900 is analyzed, and the model number information arranged at a predetermined position is read, so that the number of rows and columns of cells of the information code 900, The shape and position of the specific pattern, the position of the format information, and the candidate position (address) of the code word can be grasped.
When generating the information code 900, one of the model numbers is selected from a plurality of model numbers prepared in advance. Thereby, the basic configuration (the position of the specific pattern 104, the number of rows and columns of cells, the candidate position of the code word) in the code area is determined. For example, the model number of the configuration shown in FIG. 28 has a cell array of 29 rows and 29 columns, and a specific pattern 104 having the same structure as a QR code (registered trademark) cut-out symbol at three predetermined corners. Is arranged. An area (predetermined position 105) for recording format information is provided at a predetermined position near the specific pattern 104. In addition, in the 29 × 29 matrix area, codeword candidate positions are determined in advance at positions other than the specific pattern 104 and the predetermined position 105, and addresses from 0 to 67 are assigned to the candidate positions. . In this way, since the configuration in the code area is defined in advance in the configuration corresponding to the model number, if the model number is specified, it is possible to specify which order code word is arranged at which position. Become. The information of the determined model number is recorded at a predetermined fixed position in the model number array. For example, in the example of FIG. 28, model number information is recorded in an area 107 specified by a predetermined type of hatching.
After the model number is determined and the basic configuration in the code area is determined, the shape and position of the empty area are determined. The method for determining the shape of the vacant area may be determined by, for example, a method of selecting from a plurality of candidate shapes prepared in advance, or shape designation information input from the outside to the information code generation device 2 You may decide by the method of setting to the shape according to. Or you may determine only to the fixed shape decided. Further, the position of the empty area may be determined as a predetermined fixed position, or may be determined by inputting information for designating the position by the user.
After the vacant area is determined, the information code 900 is configured such that the code word in the data recording area and the code word in the error correction code recording area are respectively arranged at the candidate position of the code word that deviates from the determined vacant area position. Is generated. For example, in the model number configured as shown in FIG. 28, specific patterns 104 are arranged at three corners, and 68 codeword candidates numbered from 0 to 67 with reference to the positions of these specific patterns 104 are used. The position is defined in advance. In such a layout, when an empty area 910 is determined as shown in FIG. 28, codeword candidate positions that at least partially fall within the empty area 910 are excluded from the arrangement target positions, and the positions of the excluded codewords The code words are arranged in order as if skipping. For example, in the example of FIG. 28, the empty area 910 is set so as to enter the candidate positions of the code words 50, 51, 53, 54, and 60 to 67, so that these 50, 51, 53, Code words are not arranged at the candidate positions of the 54th and 60th to 67th codewords. That is, after the code words are arranged in order at positions 0 to 49, the code words 50 and 51 are skipped and the code words are arranged at the position 52, and then the codes 53 and 54 are skipped and the codes 55 to 59 are skipped. The code words are arranged in order at the positions. In this way, the data code word obtained by encoding the data to be decoded and the error correction code word representing the error correction code can be reliably arranged at the candidate positions outside the empty area 910.
After determining the specific pattern area (specific pattern 104 or other specific pattern area), the format area (predetermined position 105), the model number area 107, each codeword area, and the like, the specific contents of the empty area 910 are determined. To decide. In this information code 900 as well, the same image as the information code 100 shown in FIG. 1 or the information code shown in other figures is represented in the empty area 910 by representing the same image as the empty area exemplified in the above-described embodiments. An information code 900 having a function can be configured. Note that the method of using the information code 900 is the same as in the first embodiment and other embodiments.

DESCRIPTION OF SYMBOLS 1 ... Information code utilization system 2 ... Information code generation apparatus (information code generation system)
10: Information code reading device (information code reading system, search processing unit)
23. Light receiving sensor (imaging unit)
40... Control circuit (data recording area reading unit, image extracting unit, search processing unit)
100, 200, 300, 400, 500, 800, 900 ... information code 102 ... cell 104 ... position detection pattern (specific pattern)
110, 210, 310, 410, 510, 810, 910 ... free space (recognition target region)
190... Management device (information code reading system, search processing unit)

Claims (20)

An information code generation method for generating an information code in which cells serving as units for displaying information inside a predetermined code area are generated by an information code generation device and displayed on a display unit,
A specific pattern area in which a specific pattern having a predetermined shape is arranged inside the code area, a data recording area in which data is recorded by a plurality of types of cells, and an error correction code is recorded by a plurality of types of cells. An error correction code recording area is provided, and within the code area, an area in which decoding target data is not recorded by the cell at a position other than the specific pattern area and the data recording area, and an error caused by the error correction code An empty area that is not subject to correction is provided in a size larger than the size of the single cell, and the inside of the empty area is configured as a recognition target area that is a display key display planned area,
Said information code, said when displayed on the display unit, which the information code key image is an input image from the outside as an image of the retrieval key for generation apparatus is represented in the recognition target region a is, the data recording area, the information code generation method characterized by recording the address information for specifying a search site on the Internet as the destination to send the key image.   2. The information code generation method according to claim 1, wherein condition information for specifying a search condition is recorded in the data recording area.   3. The information code generation method according to claim 1, wherein position data indicating a position of the recognition target area in the code area is recorded in the data recording area.   4. The information code generation method according to claim 1, wherein identification information indicating that the recognition target area exists in the code area is recorded in the data recording area. An information code in which cells serving as units for displaying information are arranged inside a predetermined code area,
A specific pattern area in which a specific pattern having a predetermined shape is arranged inside the code area, a data recording area in which data is recorded by a plurality of types of cells, and an error correction code is recorded by a plurality of types of cells. An error correction code recording area is provided, and within the code area, an area in which decoding target data is not recorded by the cell at a position other than the specific pattern area and the data recording area. An empty area that is not subject to error correction is provided in a size larger than the size of the single cell, and the empty area is configured as a recognition target area that is a display planned area of a search key .
A search key image to be an image of the search key is displayed on the display unit so as to be displayed in the recognition target area,
It said data recording area, information code address information specifying a search site on the Internet, characterized in that it is recorded as a destination to send the key image.   6. The information code according to claim 5, wherein condition information for specifying a search condition is recorded in the data recording area.   The information code according to claim 5 or 6, wherein position data indicating a position of the recognition target area in the code area is recorded in the data recording area.   The information code according to any one of claims 5 to 7, wherein identification information indicating that the recognition target area exists in the code area is recorded in the data recording area. An information code reading device that captures an image of an information code formed by arranging cells serving as units for displaying information inside a predetermined code area in a state displayed on a display unit, and reads the information code;
A management device;
An information code reading system comprising:
The information code includes a specific pattern area in which a specific pattern having a predetermined shape is arranged in the code area, a data recording area in which data is recorded by a plurality of types of cells, and a plurality of types of the cells. An error correction code recording area for recording an error correction code, and an area in which decoding target data is not recorded by the cell at a position other than the specific pattern area and the data recording area within the code area, An empty area that is not subject to error correction by the error correction code is provided in a size larger than the size of the single cell, and the empty area is configured as a recognition target area that is a scheduled display area of a search key are those, on the display unit as the search key image is an image of the search key is represented in the recognition target region Shown,
The information code is recorded in the data recording area, address information specifying a search site provided by the management device as a transmission destination for transmitting the search key image,
The information code reader is
An imaging unit capable of imaging the information code displayed on the display unit ;
If the information code is captured, the data recording area reading section for reading data recorded on the data recording area in Kijo report code before being the captured,
An image extraction unit that extracts an image of the recognition target area configured in the empty area when the information code is captured;
A transmission unit that transmits the image extracted by the image extraction unit as the search key image to the management device identified by the address information read by the data recording area reading unit;
Have
The management device
A receiver for receiving data transmitted from the transmitter;
A storage unit for storing candidate images each representing a plurality of search candidates;
A similar image extraction unit that extracts a predetermined similar image similar to the search key image from the plurality of candidate images stored in the storage unit based on data received by the reception unit;
Have
It said information code reading apparatus, an information code reading system in which the image extracted by the similar image extracting unit is characterized Rukoto be displayed as a search result. The information code is recorded with condition information for specifying a search condition in the data recording area,
The data transmitted from the transmission unit includes the condition information read by the data recording area reading unit,
The similar image extraction unit matches a search condition specified by the condition information from a plurality of search candidate images prepared in advance based on data received by the reception unit, and is within the recognition target area. The information code reading system according to claim 9, wherein an image similar to the expressed search key is searched . Data transmitted from the transmission unit when the information code is captured in a state where the search key is represented in the recognition target area and symbol information is represented in the recognition target area on the display unit Includes the symbol information recognized by being imaged,
Based on the data received by the receiving unit, the similar image extracting unit matches a condition specified by the symbol information from among a plurality of search candidate images prepared in advance and is displayed in the recognition target area. The information code reading system according to claim 9 or 10, wherein an image similar to the retrieved search key is retrieved . When the plurality of information codes in which the search key is represented in the recognition target area are captured at the same time or in a predetermined continuous state by the information code reading device, the similar image extraction unit Similar to the search key represented in each of the recognition target areas from among a plurality of search candidate images prepared in advance based on the display content represented in each of the recognition target areas in the information code. The information code reading system according to any one of claims 9 to 11, wherein an image to be searched is searched. The information code is recorded in the data recording area position data indicating the position of the recognition target area in the code area,
Wherein the image extraction unit, the data recording according to claim claim 9, wherein the benzalkonium to identify the position of the recognition target region in the coding region on the basis of the position data area reading unit has read 12 The information code reading system according to any one of the above. In the information code, identification information indicating that the recognition target area exists in the code area is recorded in the data recording area.
The image extraction unit extracts an image of the recognition target area on the condition that the identification information is recorded in the data recording area based on a reading result of the data recording area by the data recording area reading unit. 14. The information code reading system according to any one of claims 9 to 13, wherein the information code reading system is any one of claims 9 to 13. An information code generation system for generating an information code in which cells serving as units for displaying information within a predetermined code area are arranged;
Said information code displayed in Table radical 113 captured, the information code reading device for reading the information code,
A management device;
An information code using system comprising:
The information code generation system includes a specific pattern area in which a specific pattern having a predetermined shape is arranged inside the code area, a data recording area in which data is recorded by a plurality of types of cells, An error correction code recording area for recording an error correction code by a cell is provided, and the decoding target data is not recorded by the cell at a position other than the specific pattern area and the data recording area within the code area. Providing an empty area that is not subject to error correction by the error correction code in a size larger than the size of the single cell, and configuring the empty area as a recognition target area that is a scheduled display area of a search key, An application that specifies a search site provided by the management apparatus as a transmission destination for transmitting an image to the data recording area. Less information to generate the information code to be recorded,
The information code reader is
An imaging unit capable of imaging the information code displayed on the display unit ;
If the information code is captured, the data recording area reading section for reading data recorded on the data recording area in Kijo report code before being the captured,
An image extraction unit that extracts an image of the recognition target area configured in the empty area when the information code is captured;
A transmission unit that transmits the image extracted by the image extraction unit as a search key image to the management device identified by the address information read by the data recording area reading unit;
Have
The management device
A receiver for receiving data transmitted from the transmitter;
A storage unit for storing candidate images each representing a plurality of search candidates;
A similar image extraction unit that extracts a predetermined similar image similar to the search key image from the plurality of candidate images stored in the storage unit based on data received by the reception unit;
Have
It said information code reading apparatus, information code utilization system image extracted by the similar image extraction unit is characterized Rukoto be displayed as a search result. The information code generation system generates the information code in a configuration in which condition information for specifying a search condition is recorded in the data recording area,
The data transmitted from the transmission unit includes the condition information read by the data recording area reading unit,
The similar image extraction unit matches a search condition specified by the condition information from a plurality of search candidate images prepared in advance based on data received by the reception unit, and is within the recognition target area. 16. The information code utilization system according to claim 15, wherein an image similar to the retrieval key represented is retrieved . Data transmitted from the transmission unit when the information code is captured in a state where the search key is represented in the recognition target area and symbol information is represented in the recognition target area on the display unit Includes the symbol information recognized by being imaged,
Based on the data received by the receiving unit , the similar image extracting unit matches a condition specified by the symbol information from among a plurality of search candidate images prepared in advance and is displayed in the recognition target area. The information code utilization system according to claim 15 or 16, wherein an image similar to the retrieved search key is retrieved . When the plurality of information codes in which the search key is represented in the recognition target area are captured at the same time or in a predetermined continuous state by the information code reading device, the similar image extraction unit Similar to the search key represented in each of the recognition target areas from among a plurality of search candidate images prepared in advance based on the display content represented in each of the recognition target areas in the information code. The information code utilization system according to any one of claims 15 to 17, wherein an image to be searched is searched. The information code generation system generates the information code in a configuration in which position data indicating a position of the recognition target area in the code area is recorded in the data recording area,
Wherein the image extraction unit, the data recording according to claim claim 15, wherein the benzalkonium to identify the position of the recognition target region in the coding region on the basis of the position data area reading unit has read 18 The information code utilization system according to any one of the above. The information code generation system generates the information code with a configuration in which identification information indicating that the recognition target area exists in the code area is recorded in the data recording area,
The image extraction unit extracts an image of the recognition target area on the condition that the identification information is recorded in the data recording area based on a reading result of the data recording area by the data recording area reading unit. 20. The information code utilization system according to any one of claims 15 to 19, wherein:

Images