JP2007033877A - Electronic paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to confirm at a glance that an information image G displayed and held in a display part of an electronic paper EP has been rewritten to a new information image. <P>SOLUTION: A mode change part 33 (44) performs display mode change processing to change a display mode (Figure 6(a)) of the information image G displayed and held in the electronic paper EP at present, to a display mode (Figure 6(b)) by changing a margin of the rewritten information image G, to a display mode (Figure 6(c)) by vertically inverting a display position of the rewritten information image G, to a display mode (Figure 6(d)) by reducing and displaying the rewritten information image G, to a display mode (Figure 6(e)) by skewing the rewritten information image G, or the like, and this change in display mode makes the user confirm at a glance that the information image has been rewritten. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to electronic paper in which an information image can be rewritten on a display unit and displayed and held in a non-powered state. In particular, the information image can be rewritten by changing the display mode of the information image displayed and held on the display unit of the electronic paper. The present invention relates to a technology that enables a user to confirm at a glance that the information has been made.

Using computers, electronic data of various media such as images and texts are handled, and documents are created, edited, viewed, and the like.
Such an electronic data document browsing method generally displays a document image (that is, an information image) on a display screen of a computer, or prints a document image on paper, which is a paper medium, by a printer. It is done by.

In recent years, as a medium for browsing information images that can replace paper, electronic paper has been developed that is flexible and thin like paper and can display and hold information images in a non-powered state.
An electronic paper is a device having a display unit that can rewrite an information image and display and hold the information image in a non-powered state. Are self-writing type electronic paper having a function of energizing the display unit, and external writing type electronic paper that gives image writing energy such as light, heat, and electric field from an external device to the display medium. In particular, among the latter, optical writing type electronic paper that holds an optically projected information image on a display unit is known as a method capable of writing a high-resolution image at high speed.
Unlike electronic paper, such electronic paper can erase and update information images displayed and held on the display unit, and can be used repeatedly, thus promoting the use from the viewpoint of saving paper resources. It is desired.

Here, with regard to cards that can be reused repeatedly, such as employee cafeteria tickets and tickets for various vehicles, the frequency of use and the amount of money used in or around the recording section can be checked by the user. There is known an invention in which a plurality of numbers, symbols, etc. are printed, or a small area mark representing the amount of money used, frequency of use, etc. is added each time it is used (see Patent Document 1). .
JP-A-7-68984

  Electronic paper has the feature that the information image displayed and held on the display unit can be rewritten many times as described above, but it is said that the information image is printed on white paper like normal paper printing. Rather than taking the process of rewriting (overwriting) an information image already displayed and held on the display unit with another information image, the user may immediately confirm whether or not the display unit has been rewritten. There was a problem that it was not possible.

  For example, a content form (e.g., a document series, such as a series of documents with updated content, a series of design drawings with updated content, or a series of documents distributed regularly) If the information format is the same between the information images to be written back, or the information contents do not change so much between the information images to be written back, the user looks at the display part of the electronic paper and It has been difficult to determine whether rewriting has been performed or whether the original information image remains without being rewritten.

  The present invention has been made in view of the above-described conventional circumstances, and an object thereof is to allow a user to confirm at a glance that an information image has been rewritten on electronic paper.

  The present invention relates to a technique for writing an information image on an electronic paper having a display unit that can display and hold an information image in a rewritable state, and the display mode of the information image to be written on the display unit is already displayed and held on the display unit. The information image is changed to a different form from the existing information image, and the information image in which the display form is changed is rewritten on the display unit of the electronic paper.

  In this way, by changing the display mode of the information image to a mode different from the information image already displayed and held on the display unit without changing the content of each information image, the user can change the display mode of the information image by changing the display mode. It is possible to confirm at a glance that the rewriting has been made. In particular, in the case where a plurality of information images of the same content form are sequentially rewritten on the display unit, the user can easily confirm that the information image has been rewritten due to a change in the display mode without confirming the content change of the information image. I can grasp it.

Here, the display mode of the information image is changed by changing the display mode of the information image itself on the display unit, for example, changing the display position, display magnification, display color, and the display direction of the top, bottom, left, and right on the display unit. The display mode can be changed by changing the mark image every time writing is performed by adding a mark image to the information image.
In addition, when changing the display position of the information image itself on the display unit, it is preferable to provide a reference display indicating the reference position of the electronic paper in advance around the display unit of the electronic paper. It becomes possible to easily confirm that the display position has been changed based on the above.

The present invention can be implemented by various apparatus configurations.
For example, when using self-writing electronic paper having a function of writing information images on the display unit by itself based on electronic data, display processing means for writing information images on the display unit on the electronic paper, and display processing And a mode changing unit that changes the display mode of the information image written by the unit to a mode different from the information image that is already displayed and held on the display unit, and the display mode is displayed each time the electronic paper itself displays and holds the information image. Can be changed.

  In addition, for example, an information image writing device that provides an information image for display on electronic paper may change the display mode of the information image, and the information image writing device may write on the display unit with respect to the electronic paper. Output means for outputting the information image and a mode changing means for changing the display mode of the output information image to a mode different from the information image already displayed on the display unit of the electronic paper. What is necessary is just to change the display mode for every information image to output.

When self-writing electronic paper is used, for example, the electronic paper includes an input unit that receives an information image from the information image writing device and a display processing unit that writes the received information image on the display unit. Then, the information image writing apparatus may transmit the information image whose display mode for rewriting to the display unit is changed by the output means to the electronic paper by contact communication or non-contact communication.
In addition, in the case of using optical writing type electronic paper that holds the projected information image on the display unit, the information image writing device projects the information image whose display mode has been changed onto the display unit of the electronic paper by the output unit. What should I do?

  According to the present invention, the information image to be displayed and held on the display unit of the electronic paper is overwritten in a display mode different from the information image already displayed and held on the display unit without changing the information content. The user can confirm at a glance that the information image has been rewritten.

The present invention will be specifically described based on examples.
The present invention can be typically implemented by an apparatus or system configuration example as shown in FIGS. 1 to 3, respectively. First, an electronic paper that can be used in these embodiments is shown in FIGS. This will be described with reference to the example shown in FIG.
The electronic paper EP is roughly classified according to the information image recording method, and is divided into a self-rewriting type shown in FIGS. 7 to 9 and an external writing type represented by the optical writing type shown in FIGS. There is a device that is thin and flexible like paper so that it can be called electronic paper in any format.

FIG. 7A shows the self-rewritable electronic paper EP in front view, and FIG. 7B shows the self-rewritable electronic paper EP in side view. The illustrated electronic paper EP has a display unit 2 that displays and holds an information image and a processing unit 3 that controls processing of electronic data. FIG. 1A shows various functional units incorporated in the processing unit 3. Is also represented.
The self-rewritable electronic paper EP is a flexible thin display recording apparatus as large as, for example, A4 size paper, and the processing unit 3 is provided on one piece of the display unit 2 that occupies most of the area. In addition, the magnitude | size of the display part 2 shall be a magnitude | size according to a use. The display unit 2 and the processing unit 3 may be detachable. For example, the electronic paper EP may be configured by attaching and connecting the clip-type processing unit 3 to the display unit 2.

  The processing unit 3 includes a driver 4 that drives the display unit 2 as will be described later, an I / O 5 (for example, a wireless communication unit) for receiving information image data from an information image writing device (not shown), and reading and writing electronic data. A memory 6 that is freely held, a control unit (CPU) 7 that controls a process of writing information images to the display unit, a battery 8 that supplies operating power to functional means such as the control unit 7, and an operation that receives an operation input from a user Part 9 is provided.

Such a self-rewritable electronic paper EP can receive electronic data of an information image by communicating with an external information image writing device via the I / O 5, and can hold the electronic data in the memory 6.
The self-rewritable electronic paper EP can drive the driver 4 under the control of the control unit 7 to rewrite and display the information image on the display unit 2 based on the electronic data held in the memory 6. Even if the drive power of 4 is removed, the display unit 2 has a function of continuously holding the information image in the display state.

  As shown in FIG. 9 showing the cross-sectional structure of the display unit 2, the self-rewritable electronic paper EP has fine colored particles (white particles 11 and black particles 12 in the illustrated example) used as toner in the copying machine. Is sealed between a pair of front and back electrodes 13 whose surface side is transparent, and is sandwiched between a pair of front and back film substrates 14 whose surface side is transparent. An air layer is formed between the electrode layers 13 so that the colored particles 11 and 12 can freely move, and an insulating layer 15 for preventing contact with the colored particles 11 and 12 is provided on the matrix electrode layer 13. It has been. Note that a color display can be realized with a simple structure by using a color filter.

The self-rewritable electronic paper EP is in a state in which no voltage is applied to the electrode 13 as shown in FIG. 8 showing the operating principle of the display unit 2 (however, the electrode 13 is charged to the polarity at the previous driving). The negatively charged white particles 11 accumulate on the back side, while the positively charged black particles 12 accumulate on the front side. When the display unit 2 is viewed from the front side, the display unit 2 is observed. Becomes a black state. Then, if the electrode polarity of the required part of the matrix corresponding to the information image displayed by the operation of the driver 4 based on the electronic data is inverted, the positional relationship between the white particles 11 and the black particles 12 is switched, and the display unit 2 An information image based on the contrast between the white particles 11 and the black particles 12 is displayed. In addition, by operating the driver 4 based on different electronic data, the information image displayed on the display unit 2 can be switched depending on the contrast between the white particles 11 and the black particles 12, and can be reused many times. .
Accordingly, the self-rewritable electronic paper EP has the property of holding the information image displayed on the display unit 2 without power in addition to the property of being thin and flexible like paper, so that it can be used as if it were paper. Furthermore, this is a recording medium that can rewrite the information image to be displayed and held many times.

FIG. 10 shows an optical writing type electronic paper EP. The illustrated electronic paper EP includes a display unit 12 for displaying and holding an information image, and an electrode 11 for applying a writing voltage to the display unit 12. Yes.
The optically writable electronic paper EP is a flexible thin thin film such as an A4 size paper, for example, and displays and holds an information image in a non-powered state on the display unit 12 that occupies most of the area. The size of the display unit 12 is arbitrary.

The optical writing type electronic paper EP displays, for example, information on the liquid crystal panel 10 as an image as shown in the figure, and the optical writing type electronic paper EP is applied to the liquid crystal panel 10 while applying a voltage to the electrode 11 from an external power source. By overlapping and irradiating light, the information image displayed on the liquid crystal panel 10 can be projected and stored on the display unit 12.
Note that a document content image is projected onto the display unit 12 to be transferred and stored also by irradiating light on the optically writable electronic paper EP while applying a voltage to the electrode 11. In short, the optically writable electronic paper EP has a function of transferring the projected information image to the display unit 12 and keeping the information image in the display state even after the voltage applied to the electrode 11 is removed. is doing.

  As shown in FIG. 12 showing a cross-sectional structure of the display unit 12, the optical writing type electronic paper EP includes an organic photoconductive material layer (organic photoconductive layer) 20 and a liquid crystal display material layer used in a copying machine. (Microencapsulated cholesteric liquid crystal layer) 21 is combined, these layers are sandwiched between a pair of front and back transparent electrodes 22, and this laminate is sandwiched between a pair of front and back transparent substrate films 23. In this configuration, the white display in which the cholesteric liquid crystal layer 21 reflects light and the light is transmitted through the liquid crystal layer 21 and absorbed by the black layer 24 provided between the cholesteric liquid crystal layer 21 and the organic photoconductive layer 20. Black display monochrome image display is possible. Furthermore, since the cholesteric liquid crystal has a characteristic of interference-reflecting color light according to the helical pitch, color display can be realized with a simple structure by forming the cholesteric liquid crystal layer 21 by laminating liquid crystals having different helical pitches. It is also possible.

The optical writing type electronic paper EP displays, for example, an image to be transferred to a light control element panel (light emitting panel) 10 for image writing and displays the display unit 12 as shown in FIG. When the voltage is applied to the electrode 11, the intensity of light is instantaneously converted to the reflection density and the projection image is held. The image information held in the display unit 12 can be erased by applying an erasing voltage to the electrode 11, and the optical writing type electronic paper EP can be reused many times by repeating writing and erasing. Note that the optical writing type electronic paper EP does not perform such an erasing process, but applies the voltage to the electrode 11 and projects a new image as described above to thereby store the image information held in the display unit 12. Can be overwritten and can be reused again and again by such overwriting.
Therefore, the optical writing type electronic paper EP has a property of holding an information image transferred by projection of an image without a power source in addition to the property of being thin and flexible like paper, so that it is used for a printer or a copying machine. It is a recording medium that can be used like paper and can rewrite the information image displayed and held many times.

FIG. 1 shows a functional configuration of electronic paper according to a first embodiment of the present invention.
The electronic paper EP of this example is the above-described self-rewritable type, and the display mode of the information image to be written on the display unit 2 by the electronic paper EP itself is currently displayed on the display unit 2 as illustrated in FIGS. It changes to the mode different from the information image currently displayed and held, and the process which rewrites the information image which changed the said display mode to the display part 2 is performed.

  The electronic paper EP of this example holds a display unit 2 that can display and hold an information image in a rewritable and non-powered state, an I / O 5 for receiving information image data from an information image writing device, and the received information image data. The image memory 31, the display processing unit 32 that writes an information image on the display unit 2 based on the information image data held in the image memory 31, and the display mode of the information image written by the display processing unit 32 is currently displayed and held on the display unit 2. A mode changing unit 33 that changes to a mode different from the information image, and display mode information of the information image currently displayed and held on the display unit 2 for use in the changing process by the mode changing unit 33 (for example, different display positions) In this case, it has a previous mode section 34 for holding (current display position information).

  Here, in this example, the image memory 31 and the previous mode section 34 are configured by using the memory 6 provided in the electronic paper EP, and the display processing section 32 and the mode changing section 33 are computer hardware of the electronic paper EP. (The driver 4, the memory 6, the processor 7, etc.) are configured by executing the program according to the present invention.

According to the electronic paper EP of this example, when the display unit 32 sequentially rewrites the information image on the display unit 2 based on the electronic data held in the image memory 31 in response to a rewrite instruction from the user, With reference to the stored information, the mode changing unit 33 changes the mode to a mode different from the information image currently displayed and held on the display unit 2 and causes the display unit 2 to rewrite the information image in which the display mode is changed. . In the above processing, the mode changing unit 33 holds the mode information for designating the changed display mode in the previous mode unit 34. Therefore, for example, when the content image is sequentially rewritten to the display unit 2 by the content form. However, the user can confirm at a glance that the information image has been rewritten due to the difference in the display mode between the information images.

FIG. 2 shows a functional configuration of an electronic paper system according to the second embodiment of the present invention.
The electronic paper system of this example includes the information image writing device 40 that uses the self-rewritable electronic paper EP as the electronic paper EP and transmits information image data to the electronic paper EP.
In this example, since the function related to the mode change process is provided on the information image writing device 40 side, the mode change unit 33 and the previous mode unit 34 may not be provided in the electronic paper EP. The image writing device 40 side receives the information image whose display mode has been changed, and the display processing unit 32 performs processing for writing to the display unit 2.

The information image writing device 40 of this example has an I / O 41 that transmits information image data to the electronic paper EP (for example, wireless transmission), and an image file that holds a plurality of information image data to be transmitted to the electronic paper EP. 42, a writing unit 43 that reads out information image data from the image file 42 for transmission to the electronic paper EP, and a display mode of the information image transmitted to the electronic paper EP is currently displayed and held on the display unit 2 of the electronic paper. An aspect changing unit 44 for changing to an aspect different from the information image;
For use in the changing process by the mode changing unit 34, the previous mode unit 45 that holds the display mode information of the information image currently displayed and held on the display unit 2 is provided.

The information image writing device 40 recognizes each electronic paper EP by the respective electronic paper ID, and manages the display mode of the information image transmitted last time for each electronic paper by the previous mode unit 45, so The display mode of the information image displayed and held on the display unit 2 of the paper can be grasped.
Here, in this example, the writing unit 43, the mode changing unit 44, and the previous mode unit 45 of the information image writing device 40 are programmed according to the present invention by the computer hardware (memory, processor, etc.) of the information image writing device 40. It is comprised by executing.

According to the electronic paper system of this example, the writing unit 43 reads information image data from the image file 42 in response to a rewrite instruction from the user, and refers to the mode information held in the previous mode unit 45, The changing unit 44 changes the display mode of the information image data to a mode different from the mode currently displayed on the display unit 2, and transmits the changed information image data from the I / O 41 to the electronic paper EP. In the electronic paper EP, the information image data is received by the I / O 5 and held in the image memory 31, and the display processing unit 32 writes the information image in the display unit 2 by the information image data held in the image memory 31. In the above process, the mode change unit 44 adds mode information specifying a display mode to the information image data transmitted to the electronic paper EP, and holds the mode information in the previous mode unit 45.
Therefore, similarly to the above-described embodiment, the user can confirm at a glance that the information image has been rewritten by the difference in display mode between the information images rewritten on the display unit 2.

FIG. 3 shows a functional configuration of an electronic paper system according to the third embodiment of the present invention.
The electronic paper system of this example includes the information image writing device 40 that uses the optical writing type electronic paper EP as the electronic paper EP and projects an information image onto the electronic paper EP.
In this example, since writing to the electronic paper EP is performed by projecting the information image, the information image writing device 40 includes the electronic paper in addition to the image file 42, the writing unit 43, the mode changing unit 44, and the previous mode unit 45. A voltage application unit 46 that applies a write voltage by connecting to the electrode 11 of the EP, and a projection unit 47 that projects an information image based on the information image data onto the display unit 12 of the electronic paper EP.

The information image writing device 40 recognizes each electronic paper EP by the respective electronic paper ID, and manages the display mode of the information image transmitted last time for each electronic paper by the previous mode unit 45, so The display mode of the information image displayed and held on the display unit 2 of the paper can be grasped.
Here, in this example, the writing unit 43, the mode changing unit 44, and the previous mode unit 45 of the information image writing device 40 are programmed according to the present invention by the computer hardware (memory, processor, etc.) of the information image writing device 40. It is comprised by executing.

According to the electronic paper system of this example, the writing unit 43 reads information image data from the image file 42 in response to a rewrite instruction from the user, and refers to the mode information held in the previous mode unit 45, The change unit 44 changes the display mode of the information image data to a mode different from the mode currently displayed on the display unit 2, applies a write voltage from the voltage application unit 46 to the terminal 11, and The information image whose form has been changed is projected and written on the display unit 12 of the electronic paper EP. In the above process, the mode change unit 44 holds the mode information for designating the display mode of the information image projected on the electronic paper EP in the previous mode unit 45.
Therefore, similarly to the above-described embodiment, the user can confirm at a glance that the information image has been rewritten by the difference in display mode between the information images rewritten on the display unit 12.

FIGS. 4 to 6 show examples of information image display mode change performed by the mode change unit 33 (44).
In the mode change example shown in FIG. 4, the mode change unit 33 (44) performs a display mode change process to add a mark image M1 in which black and white are reversed for each writing process to the information image G. Thus, the display mode of the information image G on the electronic paper EP is changed. That is, as shown in FIG. 4A, a mark image M1 whose left side is black is added to the information image G currently displayed and held on the electronic paper EP, but when the information image G is rewritten, As shown in FIG. 5B, a mark image M1 whose right side is black is added to the information image G that is rewritten and displayed on the electronic paper EP.
Therefore, the user can confirm at a glance that the information image G has been rewritten by the change of the mark image M1.

In the mode change example shown in FIG. 5, the mode change unit 33 (44) performs a display mode change process, and adds the bar-type mark image M2 whose position is changed for each writing process to the information image G. The display mode of the information image G on the electronic paper EP is changed. That is, the mark image M2 is shown in the left part of the information image G as shown in FIG. 5A, the mark image M2 is shown in the upper part of the information image G as shown in FIG. The mark image M2 is displayed in the lower part of the information image G and the mark image M2 is displayed on the right side of the information image G as shown in FIG. Change the position.
Therefore, the user can confirm at a glance that the information image G has been rewritten by a change in the display position of the mark image M2.

In the mode change example shown in FIG. 6, the mode change unit 33 (44) performs a display mode change process to change the display mode in the electronic paper (display unit) of the information image G itself. In (b) to (e), there are shown different mode change examples as the display mode of the information image G currently displayed and held on the electronic paper at (a).
In this example, a reference display mark M3 indicating the reference position of the electronic paper EP is provided in advance in the vicinity of the information image display unit (display unit) of the electronic paper EP, and FIGS. As shown, when the display mode of the information image G is changed, the change of the display mode becomes clear in light of the reference display mark M3.

In the mode change example shown in FIG. 6B, the display mode is changed by changing the margin of the rewritten information image G compared to the display mode shown in FIG.
In the mode change example shown in FIG. 6C, the display mode of the rewritten information image G is inverted by changing the display position of the rewritten information image G as compared with the display mode of FIG.
In the mode change example shown in FIG. 6D, the rewritten information image G is displayed in a reduced size and the display mode is changed as compared with the display mode in FIG.
In the mode change example shown in FIG. 6E, the display mode is changed by rotating (skewing) the position of the rewritten information image G as compared with the display mode shown in FIG.

Therefore, the user can confirm at a glance that the information image G has been rewritten by the change in the display mode of the information image G itself displayed and held on the electronic paper EP.
As a method for changing the display mode of the information image G itself, various methods such as giving a color change to the information image G, giving a font change to the information image G, and the like can be adopted. However, it is sufficient that the change in the display mode of the information image G itself displayed and held on the electronic paper EP can be visually confirmed.

It is a functional block diagram of the electronic paper which concerns on 1st Example of this invention. It is a functional block diagram of the electronic paper system which concerns on 2nd Example of this invention. It is a functional block diagram of the electronic paper system which concerns on 3rd Example of this invention. It is a figure explaining the example of a change of the display mode which concerns on this invention. It is a figure explaining the example of a change of the display mode which concerns on this invention. It is a figure explaining the example of a change of the display mode which concerns on this invention. It is a figure which shows an example of the self-rewritable electronic paper. It is a figure explaining the operation | movement principle of self-rewriting type | mold electronic paper. It is a figure explaining the structure of a self-rewritable electronic paper. It is a figure explaining the usage method of optical writing type electronic paper. It is a figure explaining the principle of operation of optical writing type electronic paper. It is a figure explaining the structure of optical writing type electronic paper.

Explanation of symbols

2, 12: display unit, 32: display processing unit,
33: Aspect change part, 34: Previous aspect part,
40: Information image writing device, 43: Writing unit,
44: Aspect change part 45: Previous aspect part
EP: Electronic paper,

Claims (13)

A method of writing an information image on an electronic paper having a display unit that can rewrite the information image and display and hold it in a non-powered state,
Changing the display mode of the information image to be written in the display unit to a mode different from the information image already displayed and held in the display unit,
An information image writing method to electronic paper, wherein an information image in which the display mode is changed is rewritten on the display unit. The information image writing method according to claim 1,
The information image display method is characterized in that the display mode of the information image is changed by changing the display mode of the information image itself on the display unit. The information image writing method according to claim 2,
A reference display indicating a reference position of the electronic paper is provided in advance on the electronic paper,
Changing the display mode of the information image is performed by changing the display position of the information image itself on the display unit. The information image writing method according to claim 1,
Changing the display mode of the information image is performed by changing the display mode of the mark image added to the information image. The information image writing method according to any one of claims 1 to 4,
An information image writing method to electronic paper, wherein a plurality of information images of the same content form are sequentially rewritten on the display unit. An electronic paper having a display unit that can rewrite an information image and display and hold the information image without power.
Display processing means for writing an information image on the display unit;
A mode changing unit that changes a display mode of the information image written by the display processing unit to a mode different from the information image that is already displayed and held on the display unit;
An electronic paper characterized by comprising: A writing device that performs an information image writing process on an electronic paper having a display unit that can display and hold an information image in a rewritable and non-powered state,
Output means for outputting an information image for writing to the display unit for electronic paper;
A mode changing means for changing the display mode of the output information image to a mode different from the information image already displayed and held on the display unit of the electronic paper;
An information image writing apparatus comprising: The information image writing apparatus according to claim 7,
The electronic paper includes an input unit that receives an information image from the information image writing device, and a display processing unit that writes the received information image on a display unit.
The information image writing apparatus according to claim 1, wherein the output means of the information image writing apparatus transmits to the electronic paper an information image in which a display mode for rewriting the display section by the display processing means is changed. The information image writing apparatus according to claim 7,
The electronic paper has a display unit that can rewrite the projected information image and display and hold it in a non-powered state.
The information image writing apparatus is characterized in that the output means of the information image writing apparatus projects the information image whose display mode has been changed onto the display unit of the electronic paper. A program executed by computer hardware of electronic paper having a display unit that can display and hold an information image in a rewritable and non-powered state,
Display processing means for writing an information image on the display unit;
A mode changing unit that changes a display mode of the information image written by the display processing unit to a mode different from the information image that is already displayed and held on the display unit;
A program characterized in that it is configured as electronic paper. A program executed by computer hardware of a writing device that performs writing processing of an information image on electronic paper having a display unit that can display and hold an information image in a rewritable and non-powered state,
The writing apparatus is configured with mode changing means for changing the display mode of the information image output for writing to the display unit to the electronic paper to a mode different from the information image already displayed and held on the display unit of the electronic paper. The program characterized by doing. An electronic paper system comprising an electronic paper having a display unit that can display and hold an information image in a rewritable and non-powered state, and an information image writing device that performs an information image writing process on the electronic paper.
The electronic paper includes input means for receiving an information image from an information image writing device, and display processing means for writing the received information image on a display unit,
The information image writing device includes an output unit that transmits an information image to be written on the display unit to the electronic paper, and information that is already displayed and held on the display unit of the electronic paper. An electronic paper system comprising: an aspect changing unit that changes an aspect different from an image. An electronic paper system comprising an electronic paper having a display unit that can display and hold an information image in a rewritable and non-powered state, and an information image writing device that performs an information image writing process on the electronic paper.
The electronic paper has a display unit that can rewrite the projected information image and display and hold it in a non-powered state,
The information image writing device is different from an output unit that projects an information image on a display unit of the electronic paper and an information image that is already displayed and held on the display unit of the electronic paper. An electronic paper system, comprising: aspect changing means for changing to an aspect.

Images