JP3464743B2 - Code reader - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a code reader for reading a code written on a medium.

[0002]

2. Description of the Related Art As a portable handy type code reader, for example, a bar code as a one-dimensional code,
For example, a matrix code as a two-dimensional code has also been developed with a multi-code reader that incorporates both a one-dimensional line sensor and a two-dimensional area sensor in order to improve reading efficiency and reading accuracy. The reason is that in order to read a barcode, a sensor that has a long effective field of view in the horizontal direction (arrangement direction of each bar of the barcode) and has a high resolution in the horizontal direction is required. Therefore, the field of view in the horizontal direction may be narrower than that of the sensor for reading barcodes, but it is necessary to have a sensor that has a sufficient effective field of view in the vertical direction and has sufficient resolution in the horizontal and vertical directions. Because it will be. Therefore, it is difficult to read a matrix code with a one-dimensional line sensor, while reading a bar code with a two-dimensional area sensor has the drawback that the effective lateral field of view that satisfies the required lateral resolution is narrow. is there.

[0003]

By the way, in a multi-code reader including a one-dimensional line sensor and a two-dimensional area sensor in one handy type case,
A problem is how to appropriately drive the one-dimensional line sensor and the two-dimensional area sensor for the code to be read. As a simple method, a method of using the code data of the one that has been successfully decoded as effective by performing the decoding processing by driving the one-dimensional line sensor and the two-dimensional area sensor at the same time or by relay-type driving without selecting them Is considered to be the simplest method, but in such a method in which the one-dimensional line sensor and the two-dimensional area sensor are not selected, for example, as shown in FIG. And the matrix code 103 are both printed, the field of view 1 of the one-dimensional line sensor
04 and the field of view 105 of the two-dimensional area sensor cover the bar code 102 and the matrix code 103, respectively, both of them have succeeded in the decoding process and have two valid code data, and the two obtained codes are obtained. There is a problem that the operator must select a desired code from the data, and even if only one of the codes can be decoded, the operator cannot know whether or not the desired code can be read.

Therefore, an object of the present invention is to provide a code reader capable of selecting a code type to be read and executing an optimum reading process based on the selection.

[0005]

The invention according to claim 1 is
In a code reader for reading a code written on a medium, a first code reading unit for reading a first code type, a second code reading unit for reading a second code type, and a code type a code type designating means for designating a reading control means for operating one of said first code reading means or the second code reading means based on the designation code type the code type designating means, said Code reading by the first code reading means
Is completed or the code is read by the second code reading means.
When the collection is completed, the method of reading
A reading end notification means for distinguishing the end of reading is provided.
However, the first code reading means and the second code reading means are housed in one case.

In the invention according to claim 2, in the invention according to claim 1, the code type designating means designates a code type by a method of operating a switch for generating a reading start timing.

The invention according to claim 3 is the invention according to claim 1, wherein the code type is designated by a preset parameter.

[0008]

According to a fourth aspect of the present invention, in the first aspect of the invention, the reading end notifying means changes the expression method of the optical display to finish the code reading by the first code reading means and the second code reading. The end of code reading by means is notified separately.

According to a fifth aspect of the invention, in the first aspect of the invention, the reading completion notifying means changes the expression method of the sound so that the first code reading means completes the code reading and the second code reading means. The end of the code reading is notified separately.

According to a sixth aspect of the invention, in the invention corresponding to any one of the first to third aspects, the code data read by the first code reading means and the second code for transmission to the outside. In addition to the code data read by the code reading means, data identification processing means for adding data for identifying each is provided.

The invention corresponding to claim 7 is the invention corresponding to any one of claims 1 to 6 , wherein the first code reading means is composed of a one-dimensional line sensor, and the second code reading means is It is composed of a two-dimensional area sensor.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a side sectional view showing a configuration of a main part of a non-contact type portable gun type code reader 1 to which the present invention is applied. FIG. 2 is a schematic external view showing the code reader 1. Inside the gun-shaped frame 2 with a grip, the line CCD (ch
argecoupled device) 3, line optical mechanism unit 4, line illumination LED 5, line target LED 6, area CCD 7, area optical mechanism unit 8, area illumination LE
D9, area target LED 10, line PC board 11, area PC board 12, control circuit section 13, dustproof reading port cover 14 made of a transparent resin plate, display LED
15, a buzzer 16, a trigger switch 17, etc. are stored.

The frame 2 is composed of three mold blocks, an upper part, a lower left part, and a lower right part, and a part of the frame 2 itself has a hollow structure to reduce the weight. . The center of gravity of the code reader 1 is designed to be located inside the grip to improve operability.
A first hook 18 for attaching a suspending rope for stably suspending the code reader 1 is integrally formed at a position above the center of gravity of the code reader 1 on the frame 2. In addition, a second hook 19 for attaching a fall-preventing hand wrap is integrally formed on the lower portion of the grip portion.

The line CCD 3 has one row of high-sensitivity CCD elements (8 μmH × 200 μmV, etc.) (1 × 4000 pixels or more so that the width of the smallest thin bar can be imaged by 5 pixels).
It has a rectangular shape that is extremely long in the longitudinal direction (the direction perpendicular to the paper surface in FIG. 1) and is arranged in a line. The reading port 2-1 is located on the opposite side of the grip portion of the code reader 1. It is located in the upper part and the back of the lever. A compound lens (having a diameter of about 10 mm) that forms an optical image incident from the reading port 2-1 at the position of the line CCD 3, a disturbance light is prevented, and only the wavelength of light emitted from the line illumination LED 5 A line optical mechanism unit 4 including a low-pass filter and a band-pass filter for transmitting light and an aperture having an aperture value of F11 or more for deepening the depth of the subject is arranged in front of the line CCD 3 on the side of the reading port 2-1. There is.

In order to obtain high CCD sensitivity corresponding to the position of the line optical mechanism section 6, a large power 6 is used.
Six line illumination LEDs 5 composed of 60 nm high-brightness LEDs are arranged in a line, and it is necessary to make the illuminance uniform in the lateral direction (line direction). Therefore, the line illumination of the reading port cover 14 is required. A diffusion lens (cylindrical lens) 20 also serving as a shading correction is arranged at a position where the optical axis of the LED 5 passes. The line target LED 6 is composed of an ultra-high brightness LED so as to be visible as a light spot on the reading surface in a non-contact manner,
It is arranged on both side surfaces of the line optical mechanism section 4.
Although not shown, the line CCD 3, the line illumination LED 5, and the line target LED 6 are electrically connected to the line PC board 11, and are supplied and controlled by the line PC board 11. It is designed to drive.

The area CCD 7 has a rectangular shape (a European standard CCIR) close to a square formed by arranging CCD elements in a matrix (about 600 × 800 pixels).
Type (440,000 pixel CCD), and the reading port 2
-1 is disposed below the line CCD 3 and in front of the line CCD 3 (on the side close to the reading cover 14), and an optical image incident from the reading port 2-1 is formed at the position of the line CCD 7. An area optical mechanism section 8 including a combination lens (having a diameter of about 10 mm), a bandpass filter for preventing ambient light and transmitting only the wavelength of the light emitted from the area illumination LED 9, an aperture having an aperture value of F11 or more, and the like. Are arranged in front of the area CCD 7.
In order to make the illuminance on the reading surface uniform according to the position of the area optical mechanism section 660, the directional characteristics are different from each other.
10 area illumination LEDs 9 composed of nm high-intensity LEDs are arranged so as to surround the area CCD 7. The area target LED 10 is composed of an ultra-high brightness LED, and is arranged on both side surfaces of the line optical mechanism portion 8. The area CCD 7, the area illumination LED 9, and the area target LED
Although not shown, 10 is electrically connected to the area PC board 12, and is driven by electric power supplied and controlled from the area PC board 12.

The line PC board 11 and the area PC board 12 are arranged so as to have a two-layer structure below and behind the reading port 2-1. Further, although not shown, the line PC board 11 and the area PC board 12 are electrically connected to the control circuit unit 13, respectively. The control circuit unit 13 is arranged at the grip of the code reader 1 and is connected to an external device or the like via an interface cable 21 extending from the lower end of the grip to the outside. The control circuit unit 13 stores a CPU (central processing unit) that constitutes the main body of the control unit and an R that stores program data for processing performed by the CPU.
OM (read only memory), RAM (random ac) where various memory areas used when the CPU performs processing
cess memory), various interfaces, etc. are connected by a system bus, and the display LED 1
5, the buzzer 16 and the trigger switch 17 are electrically connected for drive control.

An opening is formed in the frame 2 at a position through which the optical axis of the display LED 15 passes, and a display window 2-2 in which a transparent resin plate is fitted is formed in the opening. A buzzer opening 2-3 for outputting a buzzer sound to the outside is formed in the vicinity of (above) the buzzer 16 of the frame 2. With respect to the trigger switch 17, a manual trigger operating portion having a shape similar to a trigger including a pin for turning on the trigger switch 17 and a spring spring for returning to a position where the index finger of the grip portion of the code reader 1 is applied. 22 is attached.

FIG. 3 is a block diagram showing a circuit configuration of a main part of the code reader 1. CPU unit 31, flash memory 32, DRAM 33, interface circuit 3
4, the reset circuit 35, the gate array 36, the data selector 37 and the like constitute the control circuit unit 13. As described above, the CPU unit 31 includes the CPU,
ROM, RAM, DMA (direct memory access) circuit,
Various interfaces are connected by a system bus. Each C of the line CCD 3
The charges accumulated in the CD element (the one obtained by converting the optical image by the reflected light) are sequentially output (in line) through the line data collection circuit 38 by the read timing signal by the CPU section 31, and It is converted into binary digital data by the binarization circuit 39 and output to the data selector 37.

On the other hand, the electric charges accumulated in each CCD element of the area CCD 7 are sequentially output like a scanning line of a television through the area data collecting circuit 40 by a reading timing signal from the CPU section 31, It is converted into binary digital data by the area binarization circuit 41 and output to the data selector 37. The gate array 36 includes the line illumination LED 5, the line target LED 6, and the area illumination LED.
9. The area target LED 10 and the data selector 37 are connected and connected to the CPU section 31 (via the INTC terminal and the I / O terminal) to be controlled by the CPU section 31. The display LED 15, the buzzer 16, the trigger switch 17, the reset circuit 35, the interface circuit 34, an external trigger unit 42 to which a trigger signal from an external device is input, and the code reader 1 are initialized ( It is connected to the reset switch 43 which is in the reset state.

The gate array 36 controls the data selector 37 to obtain 2 lines from the line CCD 3.
Either the binarized data (image data) or the binarized data (image data) obtained from the area CCD 7 is input. This input binary data (image data)
Is controlled by a DMA circuit provided inside the CPU section 31 without the control of the CPU.
It is designed to be temporarily stored in 33.

It is converted into code data by the reading process of the CPU section 31. The code data and the image data before being converted into the code data are transferred to the interface circuit 34, and further transferred from the interface circuit 34 to the outside via the interface cable 21. Trigger signals from the trigger switch 17 and the external trigger unit 42 are combined by OR logic to generate the gate array 36 and the reset circuit 35.
Entered in.

FIG. 4 shows the manual trigger operating section 22.
FIG. 7 is a diagram showing a flow of a trigger interrupt process performed by the CPU unit 1 when the is turned on and a trigger signal is input from the trigger switch 17. First, step 1 (ST
As the process 1), it is determined whether or not the trigger signal from the trigger switch 17 is in the OFF state (for example, from high level to low level).

If it is determined that the trigger signal is not in the OFF state, the trigger signal is turned on (for example, from low level to high level), that is, from the time when this interrupt occurs. It is determined whether the set specified time has elapsed. Here, if it is determined that the specified time has elapsed, that is, the operator determines that the manual trigger operation unit 22 has been ON-operated for a specified time or longer, and as the processing of step 2 (ST2), the code type A
(For example, in the case of a bar code, the line CCD 3 system is operated to read), and processing from image reading to decoding is performed.

At this time, it is determined whether or not the reading is successful depending on whether or not the processing from the image reading to the decoding is successful. If it is determined that the reading has not been successful, the trigger signal from the trigger switch 17 has already reached O.
It is determined whether or not it is in the FF state. Here, if it is determined that the trigger signal is not in the OFF state, the process returns to the above step 2 again. Further, when it is determined that the trigger signal is already in the OFF state, the red LED of the display LED 15 is turned on and error processing is performed.

When it is determined that the reading is successful, the green LED of the display LED 15 is continuously turned on, and the A header (header data indicating the bar code) is added to the head of the code data of the code type A that has been successfully decoded. , From the interface circuit 34 to the external device via the interface cable 21. When this transmission process ends,
The trigger interrupt process is ended.

When it is determined that the trigger signal from the trigger switch 17 is in the OFF state in the process of step 1 described above, that is, the operator operates the manual trigger operating section 22.
It is determined that the ON operation has been canceled before the specified time has elapsed, and the code type B (for example, in the case of a two-dimensional matrix code, the area CCD 7 system is operated) is read, and the processing from image reading to decoding I do.

At this time, whether or not the reading is successful is determined depending on whether or not the processing from the image reading to the decoding is successful. If it is determined that the reading has not succeeded, the red LED of the display LED 15 is turned on and error processing is performed.

When it is determined that the reading is successful, the green LED of the display LED 15 is intermittently lit to blink, and the B header (two-dimensional matrix code is shown at the beginning of the code data of the successfully decoded code type B is shown. Header data) and is transmitted from the interface circuit 34 to the external device via the interface cable 21. When this transmission process is completed, this trigger interrupt process is completed.

In the first embodiment having such a structure, for example, when it is desired to take the codes 102 and 103 from the label 101 as shown in FIG. 8, a bar code is used as the code type A and a matrix is used as the code type B. Set the code in advance. Then, the manual trigger operation unit 22
By keeping ON for more than the specified time, line C
The bar code 1 of label 101 is driven by the CD3 system
02 is read and decoded.

Further, the manual trigger operating section 22 is turned on.
By continuing the N operation, the continuous reading for repeatedly reading the barcode 102 is executed until the reading is successful. By reading this a plurality of times, it is possible to prevent reading mistakes and ensure successful bar code reading.

If this decoding is successful, the display LED
The 15 green LEDs are lit continuously, and an A header indicating a bar code is added to the beginning of the decoded code data (bar code data) (for example, bar code data 01
23456789), the data is transmitted to the external device via the interface circuit 34 and the interface cable 21. on the other hand,
Open the manual trigger operating part 22 in less than the specified time (O
By releasing N operation), the system of the area CCD 7 is driven, and the matrix code 103 of the label 101
Is read and decoded. When this decoding is successful, the green LED of the display LED 15 blinks intermittently and the decoded code data (matrix code data) is added with a B header indicating the matrix code (for example, matrix code). If the data is 9876543210, B987654321
0), and is transmitted to the external device via the interface circuit 34 and the interface cable 21.

As described above, according to the first embodiment, the manual trigger operation unit 22 selects whether to read the bar code or the matrix code, that is, to select the line CCD 3 system and the area CCD 7 system.
It can be performed depending on the duration of ON operation. Therefore, the code type to be read can be selected, and the optimum reading process can be executed based on the selection.
Further, in the first embodiment, continuous reading is possible by continuously turning on the manual trigger operating unit 22, so that the reading process of, for example, a bar code can be completed in a relatively short time. In, it is possible to efficiently and more accurately read the code.

Further, the manual trigger operation unit 22 is turned on.
The selected code type, that is, the reading sensor system can be distinguished and displayed by the display LED 15 according to the duration of the operation, so that the selected code type, that is, the reading sensor system can be visually confirmed. further,
A header A or a header B indicating the code type is added to the code data of the code type selected according to the duration of the ON operation of the manual trigger operation unit 22, that is, the code data read by the selected reading sensor system and transmitted to an external device. By doing so, the code type (reading sensor system) of the code data received by the external device side can be confirmed.

A second embodiment of the present invention will be described with reference to FIG. The second embodiment has the same configuration as that of the first embodiment described above, and only the content of the trigger interrupt process is different. Therefore, the same members are designated by the same reference numerals. The description is omitted. FIG. 5 shows the CPU when the manual trigger operating unit 22 is turned on and a trigger signal is input from the trigger switch 17.
It is a figure which shows the flow of the trigger interruption process which the part 1 performs.

First, as the processing of step 3 (ST3), it is determined whether or not the second trigger signal is generated (input) from the trigger switch 17. Here, if it is determined that the second trigger signal is not generated, it is determined whether or not a preset specified time has elapsed since the first trigger, that is, when this interrupt occurred. to decide.

If it is determined that the specified time has elapsed, the code type A (for example, if it is a bar code, the line CC
The D3 system is operated to read), and the processing from image reading to decoding is performed. At this time, it is determined whether or not the reading is successful depending on whether or not the processing from the image reading to the decoding is successful. If it is determined that the reading is not successful, the red LE of the display LED 15
An error is processed by turning on D.
When it is determined that the reading is successful, the display LED 15
The green LED of is continuously turned on, the buzzer 16 generates a long notification sound once, and an A header (for example, a header indicating a bar code) is added to the head of the code data of the code type A that has been successfully decoded, and the interface circuit To an external device via 34. When this transmission process is completed, this trigger interrupt process is completed.

When it is judged that the second trigger signal is generated from the trigger switch 17 in the processing of step 3 described above, the code type B (for example, in the case of a two-dimensional matrix code, the area CCD 7 system is operated) is read. Then, the process from image reading to decoding is performed. At this time, it is determined whether or not the reading is successful depending on whether or not the processing from the image reading to the decoding is successful. If it is judged that the reading was not successful, the display LED
Error processing is performed by turning on the red LED of 15. When it is determined that the reading is successful, the green LED of the display LED 15 is intermittently turned on and off, and the buzzer 16 intermittently makes two short notification sounds to generate the code data of the code type B that has been successfully decoded. B header (for example, header data indicating a two-dimensional matrix code) is added to the head of the header and is transmitted to an external device via the interface circuit 34. When this transmission process is completed, this trigger interrupt process is completed.

In the second embodiment having such a structure, the system of the line CCD 3 is driven and the bar code 102 of the label 101 is read by operating the manual trigger operating section 22 only once. Is decoded. When this decoding is successful, the green LED of the display LED 15 is continuously lit, the buzzer 16 generates one long notification sound, and the A header indicating the bar code at the beginning of the decoded code data (bar code data) Is added and transmitted to an external device via the interface circuit 34 and the interface cable 21.

On the other hand, by turning on the manual trigger operating section 22 twice within the specified time, the area CCD
7 system is driven, and the matrix code 103 of the label 101 is read and decoded. If this decoding is successful, the green LED of the display LED 15 blinks intermittently, and the buzzer 16 makes two short notification sounds, and the matrix at the beginning of the decoded code data (matrix code data) A B header indicating a code is added and transmitted to an external device via the interface circuit 34 and the interface cable 21.

As described above, according to the second embodiment, the manual trigger operation unit 22 is used to select whether to read the bar code or the matrix code, that is, to select the line CCD 3 system and the area CCD 7 system.
It can be performed by the number of times of ON operation of. Therefore, it is possible to obtain substantially the same effects as those of the first embodiment described above. Further, in the second embodiment, it is possible to notify the selected code type by the number of ON operations of the manual trigger operation unit 22, that is, the selected reading sensor system by distinguishing the buzzer sound by the buzzer 16. Therefore, it is possible to auditorily confirm the selected code type, that is, the reading sensor system.

A third embodiment of the present invention will be described with reference to FIGS. 6 and 7. The third embodiment has the same configuration as that of the first embodiment described above, and only the trigger interrupt process and its related process are different. Therefore, the same reference numerals are given to the same members. The description thereof will be omitted. FIG. 6A is a diagram showing a flow of communication interrupt processing performed by the CPU unit 1 when communication data is input from an external device via the interface circuit 34.

First, input data (including a command
) Is a code type designation command for designating a code type. Here, if it is determined that the command is not the code type designation command, another command process is performed, and when the other command process is finished, the communication interrupt process is finished. When it is determined that the command is the code type designation command, C for setting the code type to be read
The code type designated by the code type designation command is set in the parameter (area) formed in the memory (work area of RAM) of the PU unit 31, and this communication interrupt processing is ended. .

FIG. 6B shows the code type A reading process and the code type B performed in the trigger interrupt process described later.
During the reading process, when the decoding process is completed,
It is a figure which shows the flow of the special code determination process performed. First,
It is determined whether the code obtained by decoding is a special command notification code. Here, if it is judged that the code obtained by decoding is not a special command notification code,
The special code determination process is terminated as it is, and the process returns to the trigger interrupt process again. When the code obtained by decoding is judged to be a special command notification code, it is decoded in the parameter (area) formed in the memory (work area of RAM) of the CPU section 31 for setting the code type to be read. The code type designated by the special command notification code is set, the special code determination process is terminated, and the process returns to the trigger interrupt process again.

FIG. 7 shows the manual trigger operating section 22.
FIG. 7 is a diagram showing a flow of a trigger interrupt process performed by the CPU unit 1 when the is turned on and a trigger signal is input from the trigger switch 17. First, a parameter check is performed to check the parameter in which the code type to be read is set, and it is determined in step 4 (ST4) whether the code type set in the parameter is the code type A or not.

If it is determined that the code type set in the parameter is the code type A, then the code type A (for example, in the case of a bar code, the line CCD 3 system is operated) is read and the image reading is decoded. Process up to. At this time, it is determined whether or not the reading is successful depending on whether or not the processing from the image reading to the decoding is successful. If it is determined that the reading has not succeeded, the red LED of the display LED 15 is turned on and error processing is performed.

When it is determined that the reading is successful, the green LED of the display LED 15 is continuously turned on and the buzzer 16
A longer notification sound is generated once, an A header (for example, a header indicating a bar code) is added to the head of the code data of the code type A that has been successfully decoded, and the result is transmitted to the external device via the interface circuit 34. When this transmission process is completed, this trigger interrupt process is completed.

When it is judged in the processing of step 4 that the code type set in the parameter is not the code type A, that is, the code type B, the code type B (for example, 2
If it is a dimensional matrix code, the area CCD 7 system is operated to read), and processing from image reading to decoding is performed. At this time, it is determined whether or not the reading is successful depending on whether or not the processing from the image reading to the decoding is successful. If it is determined that the reading has not succeeded, the red LED of the display LED 15 is turned on and error processing is performed.

When it is determined that the reading is successful, the green LED of the display LED 15 is blinked to intermittently turn on, and the buzzer 16 intermittently generates two short notification sounds to decode the successfully decoded code B. A B header (for example, header data indicating a two-dimensional matrix code) is added to the beginning of the code data of the interface circuit 3
4 to an external device. When this transmission process is completed, this trigger interrupt process is completed.

In the third embodiment having such a structure, the interface cable 21 is previously provided from an external device.
A code type designation command is input via the interface circuit 34, and the code type designated by the code type designation command is set in the parameter. Alternatively, prepare a special command notification bar code (which becomes the command data that specifies the matrix code) or a special command notification matrix code (which becomes the command data that specifies the bar code) for setting the code type. Then, by reading one of the codes, the code type designated by the code data is set in the parameter.

When the bar code is set in the parameter, the system of the line CCD 3 is driven and the label 101
Barcode 102 is read and decoded. If this decoding is successful, the green LED of the display LED 15
Lights continuously, the buzzer 16 makes one long notification sound, and the decoded code data (bar code data)
A header indicating a barcode is added to the head of the interface circuit 34 and the interface cable 2
1 to an external device.

On the other hand, when the matrix code is set in the parameter, the system of the area CCD 7 is driven and the matrix code 103 of the label 101 is read and decoded. If this decoding is successful, the green LED of the display LED 15 blinks intermittently, and the buzzer 16 makes two short notification sounds, and the matrix at the beginning of the decoded code data (matrix code data) A B header indicating a code is added and transmitted to an external device via the interface circuit 34 and the interface cable 21.

As described above, according to the third embodiment, the selection of the reading of the bar code or the reading of the matrix code, that is, the selection of the line CCD 3 system and the area CCD 7 system can be performed by the parameter setting. it can. Therefore, it is possible to obtain substantially the same effect as that of the second embodiment described above. In addition, in the third embodiment, description has been made of a method in which two methods of the parameter setting by communication and the parameter setting by reading the special command notification code are used in combination, but the present invention is not limited to this. Instead, only one of them may be used.

In each of the above-mentioned embodiments, the code type A is a bar code, the code type B is a matrix code, and three line CCDs are driven for the code type A, and the area for the code type B is Although the system in which the CCD 7 system is driven has been described, the operator can arbitrarily set the code type A and the code type B. For example, the area CC for the code type A can be set.
D7 system is driven, and line CCD3 for code type B
The system may be driven. Further, in each of the above-described embodiments, the display LED 15 is used to display the code type A by lighting in green, the code type B by blinking in green, and the reading error by lighting in red. However, the present invention is not limited to this. For example, as a method of displaying the code type A and the code type B separately, the display color may be changed and the display time may be changed. Good and multiple display LEDs for multiple code types
Equipped with a display LED corresponding to the code type being read
May be displayed.

Further, using the buzzer 16, the cord type A
In the above description, the notification is given by one long notification sound and the code type B is notified by two short notification sounds, but the present invention is not limited to this. In addition, in the first embodiment, only the display by the display LED 15 is performed, but in the second and third embodiments, the display LED 1 is used.
Although the display by 5 and the notification by the buzzer 16 are performed, the purpose is to display / notify the selected code type, that is, to display / notify the system selected from the line CCD 3 system and the area CCD 7 system. Display LED1
Either of the visual display by 5 and the audible notification by the buzzer 16 may be used, and the selection can be freely selected according to the application.

[0057]

As described above in detail, according to the present invention,
It is possible to provide a code reader capable of selecting a code type to be read and executing an optimum reading process based on the selection.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a configuration of a main part of a non-contact type portable gun type code reader according to a first embodiment of the present invention.

FIG. 2 is a schematic external view showing the outline of the code reader of the same embodiment.

FIG. 3 is a block diagram showing a circuit configuration of a main part of the code reader according to the embodiment.

FIG. 4 is a diagram showing a flow of a trigger interrupt process performed by the code reader according to the embodiment.

FIG. 5 is a diagram showing a flow of trigger interrupt processing performed by the code reader according to the second embodiment of the present invention.

FIG. 6 is a diagram showing the flow of communication interrupt processing and special code determination processing performed by the code reader according to the third embodiment of the present invention.

FIG. 7 is a diagram showing a flow of trigger interrupt processing performed by the code reader according to the embodiment.

FIG. 8 is a diagram showing an example of one label on which a barcode and a matrix code are printed.

[Explanation of symbols]

1 ... Code reader, 3 ... Line CCD, 4 ... Optical mechanism for line, 5 ... Line lighting LED, 6. Target LED for line, 7 ... area CCD, 8 ... Area optical mechanism section, 9. Area lighting LED, 10 ... area target LED, 15 ... LED for display, 16 ... Buzzer, 17 ... Trigger switch, 21 ... Interface cable, 22 ... Manual trigger operation unit, 31 ... CPU part, 34 ... Interface circuit.

   ─────────────────────────────────────────────────── ─── Continued front page       (56) Reference JP-A-7-93458 (JP, A)                 JP-A-5-120464 (JP, A)                 Japanese Unexamined Patent Publication No. 8-16699 (JP, A)                 JP 63-292282 (JP, A)                 JP 63-131283 (JP, A)                 Actual Kaihei 5-30972 (JP, U)

Claims (7)

(57) [Claims] 1. A code reader for reading a code written on a medium, wherein a first code reading means for reading a first code type and a second code reading means for reading a second code type. And a code type designating means for designating a code type, and a reading for operating either one of the first code reading means or the second code reading means based on the code type designated by the code type designating means. The code reading by the control means and the first code reading means is completed or
Ends the code reading by the second code reading means.
Then, read by distinguishing which method was used for reading.
A code reader characterized in that a reading end notifying means for notifying the completion of taking is provided, and the first code reading means and the second code reading means are housed in one case. 2. The code reader according to claim 1, wherein the code type designating means designates a code type by operating a switch that generates a read start timing. 3. The code reader according to claim 1, wherein the code type designating means designates a code type by a preset parameter. 4. The reading completion notifying means distinguishes between the completion of code reading by the first code reading means and the completion of code reading by the second code reading means by changing the expression method of optical display. The code reader according to claim 1, further comprising: 5. The reading end notifying means distinguishes between the code reading end by the first code reading means and the code reading end by the second code reading means by changing a sound expression method. The code reader according to claim 1, wherein: 6. Data for adding data for identifying each of the code data read by the first code reading means and the code data read by the second code reading means for transmission to the outside. The code reader according to any one of claims 1 to 3, further comprising identification processing means. Wherein said first code reading means forms a one-dimensional line sensor, the second code reading means any of claims 1 to 6, characterized in that it constitutes a two-dimensional area sensor The code reader according to item 1.