JP4892178B2 - Image display system, recording medium, and data transmission method - Google Patents

Description

  The present invention relates to an electronic paper system for displaying an image based on image data on an electronic paper including a paper-like display or a rewritable paper, a recording medium on which image data to be displayed by the electronic paper is recorded, and an image to be displayed by the electronic paper The present invention relates to a data transmission method for transmitting data to electronic paper via a recording medium.

In recent years, many display systems (electronic paper systems) using electronic paper, also called paper-like display or rewritable paper, have been proposed as display means for displaying images (see, for example, Patent Document 1). Electronic paper combines the characteristics of paper with excellent portability and visibility and the characteristics of a display that can rewrite display content repeatedly, and is a flexible thin display that displays image information written from an external device. Means.
JP 2002-244620 A

  However, in the conventional electronic paper system, when image data of an image to be displayed on the electronic paper is supplied to the electronic paper, the image information is written on the electronic paper using a personal computer or a dedicated large writing device. However, image data can be supplied to electronic paper only at a predetermined place where a personal computer or a dedicated large writing device is installed. On the other hand, when image data can be supplied to an arbitrary electronic paper, there is a problem that confidential image data that should be displayed only to a specific person is also displayed to an unspecified person and leaks outside.

  An object of the present invention is to provide electronic paper that can supply image data of an image to be displayed by the electronic paper while handling the electronic paper like paper in an arbitrary place and preventing leakage of information. A system, a recording medium, and a data writing method are provided.

  As means for solving the above problems, an image display system of the present invention has the following configuration.

(1) possess an engaging portion which engages a portion of the periphery of the sheet body, a portable recording medium that Do and a body that is rotatably supported together with the gripper, the engagement The joint portion is composed of a portion of the main body and the gripping body that are opposed to each other and that opens and closes when rotating , an input unit that receives input of image data from an external device, and image data that is input to the input unit A memory for storing the image data, a transmission means for transmitting the image data stored in the memory to the sheet-like electronic paper with which the engaging portion is engaged, and a detecting means for detecting an operation in use with respect to the engaging portion. A medium-side receiving means for receiving identification information transmitted from the electronic paper; and a transmission signal for notifying the start of transmission of image data when the detecting means detects the operation in use. , The media side receiver Control means for controlling transmission of image data by the transmission means based on the identification information received by the communication means, and the detection means is a switch provided with a contact point on the engagement portion. A portable recording medium that is a switch for detecting the open / closed state of the device as the operation in use ;
A sheet-like electronic paper having a display surface in a range excluding the peripheral portion, the paper-side receiving means for receiving the preparation signal and image data transmitted from the transmission means, and the paper-side receiving means received Image display means for displaying an image of image data on the display surface, and transmission means for transmitting unique identification information when the paper side reception means receives the preparation signal , the paper side reception means and the paper The transmission means is a sheet-like electronic paper having an antenna portion that forms a transmission / reception range with the transmission means and the medium-side reception means on the entire circumference of the peripheral edge portion ;
It is characterized by including.

  In this configuration, the image data input to the recording medium from the external device and stored in the memory of the recording medium is operated to engage the engaging portion of the recording medium with a part of the peripheral portion of the electronic paper. Then, it is transmitted to the electronic paper based on the identification information transmitted from the electronic paper.

Therefore, when the identification information transmitted from the electronic paper is not appropriate, the image data is not transmitted from the recording medium to the electronic paper, and the leakage of confidential image data is prevented.
The image display means may include a CPU and a display control circuit.

  (2) The recording medium includes an identification information memory that stores in advance identification information unique to electronic paper to which image data is to be transmitted, and the identification information received by the medium-side receiving unit is stored in the identification information memory. The image data is transmitted when it matches the identification information.

  In this configuration, the image data input to the recording medium from the external device and stored in the memory of the recording medium is operated to engage the engaging portion of the recording medium with a part of the peripheral portion of the electronic paper. After that, the identification information transmitted from the electronic paper is transmitted to the electronic paper on condition that the identification information matches the identification information stored in advance in the recording medium.

  Therefore, image data is not transmitted from the recording medium to electronic paper that transmits identification information different from the identification information stored in advance in the recording medium, and leakage of confidential image data is prevented.

  (3) In the recording medium, the identification information memory stores the identification information for each image data, and transmits image data corresponding to the identification information received by the medium side receiving unit. .

  In this configuration, after the operation for engaging the engaging portion of the recording medium with a part of the peripheral portion of the electronic paper is performed, the image data corresponding to the identification information transmitted from the electronic paper is read from the recording medium. It is transmitted to electronic paper.

Therefore, among the image data stored in the recording medium, only the image data corresponding to the electronic paper with which the recording medium is engaged is transmitted from the recording medium to the electronic paper, and the electronic with which the recording medium is engaged. Image data that does not correspond to paper is not displayed, and leakage of confidential image data is prevented.
In addition, unique identification information is given to the recording medium, the electronic paper stores identification information of the corresponding recording medium, and the identification information transmitted from the electronic paper is stored in the recording medium as its identification information. If they match, the image data stored in the image memory may be transmitted to the electronic paper.

  According to the present invention, the following effects can be obtained.

  (1) When the identification information transmitted from the electronic paper engaged with the recording medium is not appropriate, the image data is not transmitted from the recording medium to the electronic paper, and the confidential image data is transferred to the electronic paper. It can be prevented from being displayed and leaked.

  (2) No image data is transmitted from the recording medium to electronic paper that has transmitted identification information that is different from the identification information recorded on the recording medium, and confidential image data can be found at unspecified locations. It is possible to prevent leakage from being displayed on the electronic paper.

  (3) Only the image data corresponding to the electronic paper engaged with the recording medium is transmitted from the recording medium to the electronic paper, and the electronic paper capable of displaying each image data can be set according to the confidentiality of each image data. .

  FIG. 1 is a plan view of electronic paper constituting an image display system according to an embodiment of the present invention. The electronic paper 1 is a rectangular sheet body having flexibility, and a display screen (a display surface according to the present invention) 12 is formed in a portion excluding the peripheral edge portion 11. The display screen 12 is configured by any of a twisting ball display, an electrophoretic display, an electrolytic deposition / dissolution type display, an organic EL display, or the like. The peripheral edge 11 is formed with a predetermined width over the entire circumference of the electronic paper 1, but it is sufficient if it is formed at least at a part of the circumference of the electronic paper 1. The peripheral portion 11 is provided with an antenna 13 included in the paper side receiving means of the present invention.

  FIG. 2 is a diagram showing a memory clip which is a recording medium constituting the image display system. 2A is a front view of the memory clip, and FIGS. 2B and 2C are side sectional views of the X1-X1 ′ portion and the X2-X2 ′ portion in FIG. 2A, respectively. The memory clip 2 includes a main body 21 and a grip body 22. A recess 21 b is formed on the back surface of the main body 21, and a stopper 22 b projects from the front surface of the gripping body 22. The front end of the stopper 22b is fitted in the recess 21b. The shaft support portions 21a and 22a protrude from above the recess 21b and the stopper 22b on the back surface of the main body 21 and the front surface of the grip body 22, respectively, and the main body 21 and the grip body 22 are mutually connected by the pins 23 penetrating the shaft support portions 21a and 22a. It is made rotatable.

  A contact 21 c and a contact 22 c constituting the switch 29 are provided at positions facing each other at the lower end of the back surface of the main body 21 and the lower end of the front surface of the gripping body 22. The switch 29 is detection means of the present invention, and detects the open / closed state of the lower ends of the main body 21 and the gripping body 22. An antenna 30 is disposed below the stopper 22b on the front surface of the gripping body 22. The antenna 30 is included in the transmission means of the present invention.

  A torsion spring 24 is externally fitted to the pin 23, and an elastic force acts in a direction away from both ends of the torsion spring 24 on the back surface of the main body 21 and the upper surface of the front surface of the gripping body 22. Yes. As a result, the lower end portions of the back surface of the main body 21 and the front surface of the gripping body 22 are urged in a direction in which they are in contact with each other in a state where no external force is applied to the memory clip 2. From this state, when the upper part of the front surface of the main body 21 and the upper part of the rear surface of the gripping body 22 are pressed in the direction approaching each other against the elastic force of the torsion spring 24 by the fingers, the lower end of the rear surface of the main body 21 And the lower end of the front surface of the gripping body 22 are separated from each other, and this state is detected by the switch 29.

  In other words, the switch 29 detects that the memory clip 2 has been operated in the same manner (operation during use) as when the sheet body is gripped by a normal paper clip. As an example, when the memory clip 2 is operated in use and the lower end portion on the back surface of the main body 21 and the lower end portion on the front surface of the gripping body 22 are separated from each other, the switch 29 outputs an ON signal. The lower end portion on the back surface of the main body 21 and the lower end portion on the front surface of the gripping body 22 correspond to the engaging portion of the present invention. Further, the above-described operation in use is an operation on the engaging portion of the present invention.

  A display unit 25 and a selection key 26 are provided on the front surface of the main body 21. The selection key 26 includes up / down / left / right cursor keys and a confirmation key. An operation for selecting image data to be transmitted to the electronic paper 1 is accepted. When the memory clip 2 stores a plurality of pieces of image data, the memory clip 2 transmits the image data selected by the selection key 26 to the electronic paper 1. The number of the image data selected by the selection key 26 is displayed on the display unit 25.

  Further, a connection terminal 27 protrudes from one side surface of the main body 21. The connection terminal 27 is constituted by a USB connector as an example, and is included in the input means of the present invention. A control unit corresponding to the control means of the present invention is built in the main body 21, and the display 25, the selection key 26, the connection terminal 27, and the switch 29 are electrically connected to the control unit. The control unit of the main body 21 is electrically connected to the antenna 30 of the gripping body 22 via the flexible substrate 28.

  FIG. 3 is a block diagram showing a configuration of the image display system. The image display system 10 includes an electronic paper 1 and a memory clip 2. The electronic paper 1 includes a CPU 41 to which an image memory 42, an interface circuit 43, a display control circuit 44, and a memory 46 are connected. The interface circuit 43 constitutes the paper side receiving means of the present invention together with the antenna 13 and receives the image data transmitted from the memory clip 2 via the antenna 13. The image memory 42 stores image data received by the interface circuit 43. The memory 46 stores individual identification information for each electronic paper 1.

  The CPU 41 reads the image data stored in the image memory 42, creates display data based on the image data, and outputs it to the display control circuit 44. The display control circuit 44 drives the display screen 12 based on the display data input from the CPU 41 and displays an image of the image data transmitted from the memory clip 2. Power is supplied from the power supply circuit 45 to the CPU 41 and the display control circuit 44. Further, the CPU 41 transmits the identification information stored in the memory 46 from the antenna 13 through the interface circuit 43.

  The memory clip 2 includes a CPU 51 to which an image memory 52, a display control circuit 53, interface circuits 54 and 55, a selection key 26, a switch 29, a communication circuit 57, and an identification information memory 57 are connected. The interface circuit 54 constitutes the input means of the present invention together with the USB connector 27, and receives image data input from an external device (not shown) via the USB connector 27. The external device is a device that can process image data, such as a personal computer, a personal digital assistant, a PDA, a digital camera, or a facsimile device. The memory clip 2 receives at least input of image data while being connected to an external device through the USB connector 27. Note that the interface circuit 54 may output image data stored in the memory clip 2 to an external device.

  The image memory 52 is a memory according to the present invention, and stores the image data input from the interface circuit 54. The CPU 51 counts the number of image data files stored in the image memory 52 and displays the counted number of files on the display unit 25 via the display control circuit 53. The CPU 51 can display the number of files on the display unit 25 when the operation key 26 is operated. When the user operates the operation key 26, the user can confirm whether or not the image data is stored in the memory clip 2 based on whether or not the number of files is displayed on the display unit 25. Further, the display of the display unit 25 is terminated when a predetermined time has passed without the electronic paper 1 being gripped between the main body 21 and the gripping body 22 of the memory clip 2 to reduce power consumption. May be.

  The identification information memory 57 stores in advance identification information of the electronic paper 1 that is permitted to transmit the image data stored in the image memory 52. The identification information memory 57 can store identification information of one or a plurality of electronic papers 1 that are permitted to transmit image data from the memory clip 2, and the identification information is stored in the memory clip 2. It may be stored for each image data.

  The interface circuit 55 is a transmission unit and a medium side reception unit of the present invention, and transmits image data through the antenna 30. When the switch 29 detects the open state of the lower end portion of the main body 21 and the lower end portion of the gripping body 22, or when the switch 29 has gripped the electronic paper 1 between the main body 21 and the gripping body 22. Is detected, the image data of the file number corresponding to the numerical value displayed on the display 26 is transmitted from the antenna 30 via the interface circuit 55. Further, the interface circuit 55 receives the identification information transmitted from the electronic paper 1 via the antenna 30.

  The CPU 51, the display control circuit 53, and the interface circuit 55 are supplied with power from a power supply circuit 56 having a battery.

  With the above configuration, in the image display system 10 of the present invention, after the image data of the image to be displayed on the display screen 12 of the electronic paper 1 is temporarily stored in the memory clip 2 from the external device, the interface circuit 55 starts from the electronic paper 1. Based on the received identification information, the data is transmitted from the memory clip 2 to the electronic paper 1. The electronic paper 1 and the memory clip 2 have a known electromagnetic coupling type RFID (Radio Frequency Identification) system. The electronic paper 1 has an IC tag function, and the memory clip 2 has a reader / writer function. ing.

  The memory clip 2 transmits and receives data between the interface circuit 55 and the interface circuit 43 of the electronic paper 1, selects a specific electronic paper 1, and transmits image data. Accordingly, even when a plurality of electronic papers 1 are close to each other, image data is transmitted from the memory clip 2 to a predetermined specific paper 1.

  FIG. 4 is a flowchart showing a transmission procedure of image data in the image display system. FIG. 4A shows a processing procedure in a memory clip, and FIG. 4B shows a processing procedure in electronic paper. The CPU 51 of the memory clip 2 waits for the switch 29 to detect an operation in use for the memory clip 2 (S1), and receives a preparation signal via the interface circuit 55 when the switch 29 outputs an ON signal ( S2). This preparation signal is a signal for notifying start of data transmission from the reader / writer to the IC tag in the RFID system described above. This preparation signal is a power carrier wave having a frequency assigned in advance to the specific electronic paper 1 to which the memory clip 2 corresponds.

  When the corresponding electronic paper 1 is located in the vicinity of the memory clip 2 that has transmitted the preparation signal, the preparation signal is received by the antenna 13 of the electronic paper 1. The received preparation signal is energized through a coil connected to the antenna 13, and a current flows through a rectifier connected to the coil. When a current of a predetermined value or more flows through the rectifier, a voltage of a certain value or more is generated in the power supply circuit 45, and the CPU 41 of the electronic paper 1 is activated.

  When the CPU 41 of the electronic paper 1 receives the preparation signal after activation, the CPU 41 transmits an allowance signal (S11 → S12). This permission signal is a signal for notifying the reader / writer of the data receivable state from the IC tag in the RFID system described above, and includes identification information that is set uniquely for each electronic paper in order to identify the electronic paper 1. .

  The CPU 51 of the memory clip 2 waits for an allowance signal to be transmitted within a predetermined time after transmitting a preparation signal (S3, S4). When the CPU 51 receives the permission signal transmitted from the electronic paper 1, the CPU 51 compares the identification information included in the permission signal with the identification information stored in the identification information memory 57 (S5). A non-display notification indicating that the image data cannot be displayed is transmitted (S6). When the identification information included in the permission signal matches the identification information stored in the identification information memory 57, the CPU 51 transmits the image data stored in the image memory 52 via the interface circuit 55 ( S7).

  When the CPU 41 of the electronic paper 1 receives the non-display notification transmitted from the memory clip 2 via the interface circuit 43 (S13), the CPU 41 of the electronic paper 1 displays on the display screen 12 a notification image that the image data cannot be displayed (S14). .

  When receiving the image data without receiving the non-display notification (S15), the CPU 41 of the electronic paper 1 sequentially stores the received image data in the image memory 42 (S16). When the storage of the image data is completed, the writing is completed. A signal is transmitted (S17). Thereafter, the CPU 41 creates display data based on the image data in the image memory 42 (S18), and displays an image on the display screen 12 using the created display data (S19).

  Note that the CPU 51 of the memory clip 2 transmits the attribute data together with the image data. The attribute data is information indicating the size of the image, information such as fonts, colors, ruled lines and file names related to the text image, information indicating the type of application software at the time of image creation, and information indicating the compression method. is there.

  Through the above processing, a part of the peripheral edge 11 of the electronic paper 1 permitted to display an image is gripped by the memory clip 2 in the same manner as the operation of gripping a part of the peripheral edge of the paper with a normal paper clip. Thus, an image can be displayed on the display screen 12 of the electronic paper 1 based on the image data stored in the memory clip 2.

  Note that by arranging the antenna 13 over the entire circumference of the peripheral edge 11 of the electronic paper 1, the memory clip 2 can store any position on the peripheral edge 11 of the electronic paper 1 with the memory clip 2. An image can be displayed on the display screen 12 of the electronic paper 1 based on the image data.

  However, normally, in the case of horizontal writing images, the upper left part or the center of the left side of the paper is gripped by the paper clip, and in the case of vertical writing images, the upper right part of the paper or the center of the right side is gripped by the paper clip. In consideration of the above, the antenna 13 may be disposed at least at the position shown in FIG. 5 in the peripheral edge 11 of the electronic paper 1. In this case, for example, an external view of the memory clip 2 is illustrated at a position where the antenna 13 is disposed at the peripheral edge 11 of the electronic paper 1 so that the position to be gripped by the memory clip 2 can be recognized. It may be. From this figure, it can also be recognized that the electronic paper 1 can use the memory clip 2.

  Further, if the antenna 13 is present at a position where the preparation signal transmitted from the memory clip 2 can be received, it is only necessary to perform an operation when using the memory clip 2 at that position. Part of the peripheral edge 11 of the paper 1 does not need to be gripped.

  Further, the power supply unit 45 of the electronic paper 1 includes not only a power carrier wave from the memory clip 2 but also a unique sheet battery, a solar cell, or a power supply contact provided on the memory clip 2 It is also possible to receive power supply by providing a contact that joins to.

  Further, unique identification information can be given to each of the memory clips 2, and the identification information of the memory clip 2 corresponding to the electronic paper 1 can be stored in advance. In this case, the memory clip 2 transmits the image data stored in the image memory 52 to the electronic paper 1 on the condition that the identification information transmitted from the electronic paper 1 matches its own identification information.

  FIG. 6 is a diagram showing the storage state of the identification information in the memory clip when another image data transmission process is performed in the image display system. When each of the plurality of image data stored in the memory clip 2 is displayed only on the single or plural electronic papers 1 that are permitted to be displayed, as shown in FIG. In each memory area, a single or a plurality of image data that are permitted to be displayed corresponding to each of a plurality of image data G (here, G1 to G4) stored in the image memory 52 are displayed. The identification information set in the electronic paper 1 is stored.

  In the example shown in FIG. 6A, when the identification information A is transmitted from the electronic paper 1, the image data G1 and G2 are transmitted from the memory clip 2, and when the identification information B is transmitted from the electronic paper 1. When the image data G2 and G3 are transmitted from the memory clip 2 and the identification information C is transmitted from the electronic paper 1, the image data G3 and G4 are transmitted from the memory clip 2 and the identification information D is transmitted from the electronic paper 1. When the image data G3 is received, the image data G3 is transmitted from the memory clip 2.

  As shown in FIG. 6B, each of the plurality of image data G11 to G14 is set to a different single electronic paper 1A to 1D that is permitted to display each image data. By storing the identification information, even when the four electronic papers 1A to 1D are stacked in a single memory clip 2, they are different from each other in the plurality of electronic passwords 1A to 1D. An image can be displayed. In this case, the identification information of the electronic paper 1 corresponding to each image data is added from the memory clip 2 and transmitted. Each of the electronic papers 1A to 1D receives only image data to which its own identification information is added.

  FIG. 7 is a flowchart showing details of another image data transmission process of the memory clip in the image display system. In this example, the CPU 51 of the memory clip 2 stores a plurality of pieces of image data in the image memory 52 and is permitted to display each piece of image data in the identification information memory 57 as shown in FIG. The identification information of the electronic paper 1 is stored.

  The CPU 51 waits for the switch 29 to detect an operation in use for the memory clip 2 (S21), and transmits a preparation signal from the interface circuit 55 when the switch 29 outputs an ON signal (S22). When the CPU 51 receives the permission signal transmitted from the electronic paper 1 that has received the preparation signal within a predetermined time (S23, S24), whether or not the identification information included in the permission signal is stored in the identification information memory 57. Is discriminated (S25). When the identification information included in the permission signal is not stored in the identification information memory 57, the CPU 51 transmits a non-display notification to the electronic paper 1 (S26).

  When the identification information included in the permission signal is stored in the identification information memory 57, the CPU 51 determines whether or not there is a plurality of image data permitted to be displayed on the electronic paper 1 ( S27). When there is only a single image data permitted to be displayed on the electronic paper 1, the CPU 51 transmits the image data (S28), and receives the writing completion signal transmitted from the electronic paper 1. Then, the process ends (S29).

  On the other hand, when there are a plurality of image data permitted to be displayed on the electronic paper 1, the CPU 51 creates and transmits reduced image data in which the images of the plurality of image data are one image (S30). ).

  When the CPU 51 displays all the images based on the reduced image data on the electronic paper 1 that has received the image data and receives a write completion signal transmitted from the electronic paper 1 (S31), the CPU 51 performs image selection by operating the selection key 26. The selection waits (S32). When any image data is selected by operating the selection key 26, the CPU 51 transmits the selected image data (S33), and receives a write completion signal for the transmitted image data (S29, S34). It waits for the selection of an image by the operation of the next selection key 26 or the operation of the confirmation key arranged at the center of the selection key 26 (S35, S36). When only the confirmation key is operated alone after the image selection operation by the operation of the selection key including the cursor key and the confirmation key, the CPU 51 ends the image transmission process.

  When a plurality of pieces of image data are stored in the memory clip 2 as image data that can be displayed on the electronic paper 1 by the above processing, as shown in FIG. A reduced image obtained by converting all the image data images that can be displayed on the electronic paper 1 into one image is displayed on the electronic paper 1. The user refers to the reduced image displayed on the electronic paper 1 and selects one image to be displayed on the electronic paper 1 by operating the selection key 26 of the memory clip 2. As an example, the display unit 25 of the memory clip 2 increases or decreases the numerical value to be displayed according to the operation of the cursor key of the selection key 26. By operating the confirmation key of the selection key 26 in a state where the number assigned to the desired image in the reduced image is displayed on the display unit 25, an image related to the user's selection is determined.

  When the electronic paper 1 and the memory clip 2 are located at a place where the selected image can be displayed, the selected image data is transmitted to the electronic paper 1 and the image is displayed on the display screen 12 of the electronic paper 1. Is done. For example, when the reduced image shown in FIG. 8A is displayed on the display screen 12 of the electronic paper 1, when “3” is displayed on the display 25 of the memory clip 2 and the enter key is operated, the electronic paper is displayed. 1 display screen 12 changes to the state shown in FIG.

  A transparent touch panel may be arranged on the upper surface of the display screen 12 of the electronic paper 1 so that the user can perform an image selection operation on the display screen 12. In this case, information specifying the image selected from the electronic paper 1 is transmitted to the memory clip 2, and the memory clip 2 transmits image data corresponding to the information transmitted from the electronic paper 1.

  Further, the reduced screen is not limited to displaying all images stored in the memory clip 2 in a reduced size, but may display the title of each image instead of or together with this.

  In the processing shown in FIG. 7, identification information confirmation processing is performed before transmission of a reduced image, and reduced image data for a plurality of image data permitted to be displayed on the electronic paper 1 is created. However, instead of this, or in addition to this, the identification information may be confirmed when transmitting the selected image data while displaying the reduced image on the electronic paper 1. In this case, the resolution of each image data constituting the reduced image data can be lowered, or the reduced image data can be constituted only by a plurality of image titles.

  Further, the identification information set for each electronic paper 1 is composed of, for example, a department code that specifies a department and a personal code that specifies an individual, and image data that can be displayed at the department level and image data that can be displayed at the individual level. May be distinguished from each other. In this case, for the image data that can be displayed at the department level, the portion of the personal code in the identification information is left blank. Further, before the image data is transmitted, the department code in the identification information is confirmed to match, and the reduced image data composed of a plurality of image data having the same department code is transmitted to the electronic paper 1, and the specific image data is selected. Later, the identity code may be matched in the identification information.

It is a top view of the electronic paper which comprises the image display system which concerns on embodiment of this invention. It is a figure which shows the memory clip which is a recording medium which comprises the said image display system, The figure (A) is a front view of a memory clip, The figures (B) and (C) are X1- in FIG. It is side surface sectional drawing of a X1 'part and a X2-X2' part. It is a block diagram which shows the structure of the said image display system. It is a flowchart which shows the transmission procedure of the image data in the said image display system, the figure (A) shows the process sequence in a memory clip, and the figure (B) shows the process procedure in an electronic paper. It is a top view which shows another example of the electronic paper applied to the said image display system. It is a figure which shows the memory | storage state of the identification information in the memory clip applied to the said image display system. It is a flowchart which shows another image data transmission process of the memory clip in the said image display system. It is a figure which shows an example of the display screen of the electronic paper which comprises the said image display system, The figure (A) shows the display state of the reduction | decrease screen, The figure (B) shows the display state of the selected image. Yes.

Explanation of symbols

1 Electronic paper 2 Memory clip (recording medium)
3 Image processing device (external device)
11 Peripheral part 12 Display screen (display surface)
13 Antenna (Receiving means)
21 Main body 22 Grasping body 27 USB terminal (input means)
29 switch (detection means)
30 Antenna (Transmission means)
41 CPU (image display means)
43 Interface circuit (paper side receiving means)
44 Display control circuit (image display means)
51 CPU (control means)
52 Image memory
54 Interface circuit (input means)
55 Interface circuit (transmission means and medium side reception means)
57 Identification information memory

Claims (8)

A portable recording medium having a main body and a gripping body, which have an engaging portion that engages with a part of the peripheral edge of the sheet body, and is pivotally supported with respect to each other. An input means for receiving image data input from an external device, and a memory for storing the image data input to the input means, which are configured to be portions that face each other of the main body and the gripper and open and close during the rotation. Transmitting means for transmitting image data stored in the memory to a sheet-like electronic paper engaged with the engaging portion, detecting means for detecting an operation in use for the engaging portion, and the electronic paper Medium side receiving means for receiving the identification information transmitted from the transmission means, and a transmission signal for notifying the start of image data transmission when the detecting means detects the operation in use, and the medium side Receiving means Control means for controlling transmission of image data by the transmission means based on the received identification information, and the detection means is a switch provided with a contact point on the engagement portion, and the open / close state of the engagement portion A portable recording medium that is a switch for detecting the operation as the use-time operation,
A sheet-like electronic paper having a display surface in a range excluding the peripheral portion, the paper-side receiving means for receiving the preparation signal and image data transmitted from the transmission means, and the paper-side receiving means received Image display means for displaying an image of image data on the display surface, and transmission means for transmitting unique identification information when the paper side reception means receives the preparation signal, the paper side reception means and the paper The transmission means is a sheet-like electronic paper having an antenna portion that forms a transmission / reception range with the transmission means and the medium-side reception means on the entire circumference of the peripheral edge portion;
Including image display system.   The image display system according to claim 1, wherein the image display means includes a CPU and a display control circuit.   The recording medium includes an identification information memory that stores in advance identification information unique to electronic paper to which image data is to be transmitted, and the identification information received by the medium-side receiving unit is stored in the identification information stored in the identification information memory. 3. The image display system according to claim 1, wherein the image data is transmitted when they coincide with each other.   4. The recording medium according to claim 3, wherein the identification information memory stores the identification information for each image data, and transmits image data corresponding to the identification information received by the medium side receiving means. The image display system described in 1.   In addition to giving unique identification information to the recording medium, the electronic paper stores the identification information of the corresponding recording medium, and the identification information transmitted from the electronic paper matches the identification information of the recording medium. The image display system according to claim 1, wherein the image data stored in the image memory is transmitted to the electronic paper. An engaging portion that engages with a part of the peripheral edge of the sheet member, an input unit that receives input of image data from an external device, a memory that stores image data input to the input unit, and an image stored in the memory Transmission means for transmitting data to electronic paper having sheet-like electronic paper with which the engaging portion is engaged and having an antenna portion that forms a transmission / reception range all around the peripheral portion, and image data An identification information memory storing identification information for specifying electronic paper to be recorded, medium-side receiving means for receiving identification information unique to each electronic paper, detection means for detecting an operation in use for the engaging portion, and transmits a ready signal is detecting means for notifying the start of transmission of the images data when it detects when operations used for the engaging portion from said transmitting means, the medium side after transmitting the preparation signal And a control means for transmitting image data to the electronic paper when the identification information is credit means received matches the identification information stored in the identification information memory,
The engaging portion is composed of a main body and a gripping body that are pivotally supported to each other and facing each other and opening and closing at the time of the rotation,
The recording medium according to claim 1, wherein the detecting means is a switch provided with a contact point on the engaging portion, and is a switch for detecting an open / closed state of the engaging portion as the operation in use.   The recording medium according to claim 6, wherein the identification information memory stores the identification information for each image data, and transmits image data corresponding to the identification information received by the medium-side receiving unit. . An engaging portion that engages with a part of the peripheral edge of a sheet-like electronic paper, and is a portion that is opposed to each other of a main body and a gripping body that are pivotally supported with respect to each other and that opens and closes during the rotation. Through the portable recording medium having the configured engaging portion, the electronic paper having an antenna portion that forms a display surface in a range excluding the peripheral portion and forms a transmission / reception range on the entire periphery of the peripheral portion, A data transmission method for transmitting image data of an image to be displayed on the display surface,
Image data to be displayed by the electronic paper is input from an external device to the recording medium, the input image data is recorded on the recording medium, and the engaging portion is opened and closed at a part of the peripheral edge of the electronic paper. When the operation in use is engaged, a preparation signal for notifying the start of transmission of image data is transmitted from the recording medium to the electronic paper, and the electronic paper receives the preparation signal. A data transmission method, comprising: transmitting image data from the recording medium only to predetermined electronic paper based on identification information transmitted from electronic paper engaged by an engaging portion.

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