JP2006285176A - Image display system and image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rewrite contents displayed by a display body of an image display device in a rewriting direction which does not put stress or irritation to a user of the image display device. <P>SOLUTION: An image display system 1 is provided with: a plotting data output device comprising a plotting data generation means 205 for generating the plotting data of contents, a rewriting direction regulation means 210 for regulating the rewriting direction of an image on the basis of prescribed information included in the plotting data to quickly transit characters of the contents to a readable state, a data composition means 220 for adding information indicating the rewriting direction to the plotting data, and a data output means 225 for outputting the plotting data; and the image display device 3 comprising a data input means 250 for inputting the plotting data, a data extraction means 255 for extracting information indicating the rewriting direction from the plotting data and a plotting means 270 for plotting an image indicated by the plotting data in each pixel row of a memorable display body 115 along the extracted rewriting direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image display system and an image display apparatus that display content.

  An information display terminal using a memory display as a display has been put into practical use. This memory display body is suitable for a display such as an electronic book because it does not require power except during rewriting and saves power. However, such a memory-type display body has a characteristic that the display rewriting speed is generally slower than a display body that does not have a normal memory characteristic. In particular, in the case of a high-resolution display in which the number of vertical and horizontal pixels of the memory-type display body exceeds 1000 pixels, rewriting the display requires time that can be perceived by the user. As a method for preventing the user from perceiving that the rewriting speed of such a memory-type display body is slow, the application time of the liquid crystal driving voltage is divided into a plurality of times in a short time as described in Patent Document 1, and the memory property is also provided. The display which produced fade-in was performed by raising the contrast of a display body gradually. Furthermore, when displaying a page that is different from the currently displayed content page, in addition to the display that produces a fade-in, the rewriting operation is visually performed by continuously performing operations such as page turning. It was expressed in.

JP 2000-147466 A

  However, in the conventional method, the rewriting direction is always a constant direction regardless of the display direction on the memory-type display body and the character direction as the way of assembling the characters depending on the content. Therefore, depending on these directions, the user cannot start reading content information including bibliographic information until rewriting is completed. As a result, the user felt stress and frustration from the start of rewriting to completion.

In order to solve the above-described problems, an image display system according to the present invention includes a drawing data output device that outputs drawing data of content including characters, and a display that includes an image indicated by the input drawing data in a predetermined pixel array. An image display system connected to an image display device to be displayed on the body so as to be able to exchange drawing data, wherein the drawing data output device generates drawing data of the content that can be displayed on the image display device And rewriting the image on the display body based on predetermined information included in the drawing data so that the content including the characters displayed on the display body can be quickly transitioned to a legible state. Defining means for defining a direction, adding means for adding information indicating the rewriting direction to the drawing data, and output means for outputting the drawing data The image display device includes an input unit that inputs the drawing data, an extraction unit that extracts information indicating the rewriting direction from the drawing data, and an image indicated by the drawing data in the rewriting direction indicated by the information. And a drawing means for drawing for each pixel column of the display body.
According to the present invention, the drawing data output device defines the rewrite direction so that the content including the characters displayed on the display body can quickly transition to the readable state, and the image display device displays according to the defined direction. Since the body is rewritten, the user can sequentially read the characters of the content from the rewritten pixel row without waiting for the rewriting on the display body to be completed.

In the present invention, the predetermined information includes a display direction of the content, a way of assembling the characters, and a number of pages that can be displayed on the display body at a time by dividing the content into pages. preferable.
According to the present invention, the rewriting direction of an image can be defined based on the information of the content display direction, how to assemble characters, and the number of pages that can be displayed at a time on the display body.

In the present invention, it is preferable that the rewriting direction includes one of a vertical direction and a horizontal direction in a plan view of the display body, and a direction in which the pixel column is rewritten on the display body.
According to the present invention, the rewriting direction of the image is uniquely determined by clearly indicating either the vertical direction or the horizontal direction in the plan view of the display body and the direction in which the pixel row is rewritten on the display body. .

In the present invention, the drawing data output device includes bibliographic data generating means for generating image data indicating the bibliographic information of the content, and the rewriting direction in order to display the bibliographic information on the display body before the content. It is preferable to further include bibliographic data adding means for adding the image data to a predetermined position of the drawing data based on the information shown.
In the present invention, the bibliographic data adding unit may add an image indicated by the image data to a position where the drawing data is first drawn in the rewriting direction in the image indicated by the drawing data.
According to the present invention, since the bibliographic information is displayed on the display body before the content, the user can visually recognize the bibliographic information of the content displayed on the display body before the content is displayed.

In order to solve the above-described problems, an image display device of the present invention is an image display device that displays an image of content including characters on a display body configured by a predetermined pixel row, and is displayed on the display body. Input means for inputting drawing data indicating the image of the content, and extraction for extracting information indicating the rewriting direction of the image on the display body from the drawing data. Means for drawing the image indicated by the drawing data for each pixel column of the display body along the rewriting direction indicated by the information, and the information relating to the rewriting direction of the image includes the display body The content including the characters displayed on the screen is defined so as to quickly transition to a legible state.
According to the present invention, the image display device rewrites the display body in accordance with the prescribed direction so that the characters of the content displayed on the display body can quickly transition to the readable state. Thus, it is possible to read the characters of the content sequentially from the rewritten pixel row without waiting for the completion of the.

In the present invention, the input drawing data further includes bibliographic information of the content, and the extraction unit further extracts the bibliographic information from the drawing data and generates bibliographic information indicating the bibliographic information. Data generation means and bibliographic data addition means for adding the image data to a predetermined position of the drawing data based on the information indicating the rewriting direction so that the bibliographic information is displayed on the display body before the content. It is preferable to further comprise.
According to the present invention, since the bibliographic information is displayed on the display body before the content, the user can visually recognize the bibliographic information of the content displayed on the display body before the content is displayed.

In the present invention, position indicating means for indicating the position of the content to be displayed on the display body,
In accordance with the instruction, it is preferable to further include interrupt instruction means for causing the drawing means to update the content of the image drawn on the display body with the highest priority.
According to the present invention, the image drawn on the display body is updated with the highest priority in accordance with the instruction of the position instruction means, so that the user can visually recognize the bibliographic information of the instructed content more quickly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)

FIG. 1 is an external configuration diagram showing an external appearance of an image display system 1 according to the first embodiment. The image display system 1 includes a host computer 2 that is a drawing data output device and an image display device 3, and the host computer 2 and the image display device 3 are connected via a USB cable 82. The image display system 1 is a system that sends drawing data of an image generated by the host computer 2 to the image display device 3 and displays a drawing image of the drawing data on the image display device 3. This system employs a “virtual printer” method in which printing processing is performed by a driver having substantially the same function as the printer driver, and the printing result is output as an electronic file.
The host computer 2 includes a main body 75, a display 25, a keyboard 60, and the like. On the front surface of the main body 75, there is a card I / F 80 (FIG. 2) in which a media card 85 (FIG. 2) is inserted and information can be read and written. The back surface of the main body 75 has a USB terminal 66 (FIG. 2) for USB (Universal Serial Bus) connection.
The image display device 3 includes a memory display 115 having display memory, and a page turning button 145 for instructing the position of an image displayed on the memory display 115 and turning the page. . Further, on one side surface in the long side direction of the image display device 3, there is a card I / F 130 (FIG. 2) in which a media card 85 (FIG. 2) is inserted and information can be read and written. 3 has a USB terminal 122 for USB connection on one side surface in the short side direction.
In such a configuration, the image display device 3 reads the image data generated by the host computer 2, and then displays the first page image 116 </ b> B indicated by the image data on the memory display 115. Here, when the page turning button 145B in the feed direction is pressed, the image 116A of the second page is sequentially rewritten for each pixel column from one side of the memory display 115.

<Hardware configuration of image display system>
Next, the hardware configuration of the image display system 1 will be described. FIG. 2 is a block diagram showing the hardware configuration of the image display system 1. First, the hardware configuration of the host computer 2 will be described. The host computer 2 includes a central processing unit (CPU) 10, a random access memory (RAM) 15, a read only memory (ROM) 30, a hard disk controller 35, a display controller 20, a mouse controller 45, a keyboard controller 55, a USB controller 65, A card I / F (Inter Face) 80 is provided. In addition, these units are connected to each other by a bus 70 so that signals can be transmitted and received.
The CPU 10 reads various programs and data such as a basic control program stored in the ROM 30 and application programs stored in the ROM 30 and the HDD 40, and expands these various programs and data in a main memory area provided in the RAM 15. And execute control of each unit included in the host computer 2.
The hard disk controller 35 drives the HDD 40. The mouse controller 45 inputs information input from the mouse 50. The keyboard controller 55 inputs information input from the keyboard 60. The USB controller 65 transmits information according to the USB standard via the USB terminal 66. The card I / F 80 reads and writes information from and to the media card 85A. Further, the display controller 20 drives the display 25.

Next, the image display device 3 will be described. The image display device 3 includes a CPU 100, a RAM 105, a ROM 125, a VRAM 155, a card I / F 130, an input I / F 140, a display controller 110, and a USB controller 120. These units are connected to each other by a bus 150 so that signals can be transmitted and received.
The CPU 100 reads various programs and data such as a basic control program stored in the ROM 125 and an application program stored in the media card 85B connected to the ROM 125 and the card I / F 130, and these various programs and data are stored in the RAM 105. Are expanded and executed in a main memory area provided in the VRAM 155 or the VRAM 155, and control of each unit included in the image display device 3 is executed.
The input I / F 140 inputs information input from the page turning button 145. The USB controller 120 transmits information according to the USB standard via the USB terminal 122. The card I / F 130 reads and writes information from and to the media card 85B. Furthermore, the display controller 110 drives a passive display memory 115. As the memory display 115, an electrophoretic display, a cholesteric liquid crystal, or the like can be used.

<Functional configuration of image display system>
Next, the functional configuration and data flow of the image display system 1 will be described. FIG. 3 is a diagram illustrating a functional configuration of the image display system 1. First, the functional configuration of the host computer 2 will be described. The host computer 2 includes content creation means 200, drawing data generation means 205, rewrite direction defining means 210, rewrite direction input means 215, data composition means 220, and data output means 225.
The content creation unit 200 is application software that is activated by a user and creates content, such as Word or Excel manufactured by Microsoft, for example. Further, the content creation unit 200 stores the created content in the HDD 40 in a file format. Furthermore, the content creation unit 200 can open a stored content file, modify the content, overwrite the HDD 40, or save the file with a different name.
The drawing data generation means 205 is a driver that generates content drawing data. This driver has substantially the same function as the printer driver. That is, the drawing data generated by the drawing data generation unit 205 is not shown, but has the same structure as the print job data, and is composed of an information header that forms the head of the data and a plurality of pages. And separable image data.
Here, the information header will be described with reference to FIG. The information header is described in a job language and mainly includes bibliographic information. This bibliographic information includes, for example, information indicating the direction of display on the memory display 115 of the image display device 3. In general, the pixels of the display body are arranged in a rectangular shape like the memory display body 115. Accordingly, the display direction for each content, that is, the portrait mode which is the portrait display or the landscape mode which is the landscape display is determined when the drawing data is generated, and is described in the information header. In addition, the information header includes information indicating how to assemble characters to be displayed on the memory display 115 of the image display device 3. This assembly method can be classified into vertical writing and horizontal writing. Furthermore, an allocation display for displaying a plurality of pages on one screen is known. Also in this case, the number of pages to be allocated and the order of allocation are determined when the drawing data is generated, and are described in the information header. Each determination described above is automatically set or set by the user by a layout setting function (not shown) of the drawing data generation means 205 displayed on the display 25.

The rewriting direction defining unit 210 is a defining unit that analyzes the information header and defines the direction in which the memory display 115 is rewritten. Specifically, the rewriting direction is defined based on the display direction and the information related to the allocation. The process for defining the rewriting direction will be described later.
The rewrite direction input means 215 is an input means for the user to specify the direction in which the memory display 115 is rewritten. The user inputs a rewriting direction via a user interface screen (not shown) displayed on the display 25. The information relating to the rewriting direction input here is sent to the rewriting direction defining means 210, and has priority over the information described above in the information header.
The data synthesizing unit 220 is an adding unit that adds information on the rewriting direction defined by the rewriting direction defining unit 210 to the drawing data, and specifically describes the information in the information header. In this case, a new setting area may be provided in the information header, or a free area of existing data may be used.
The data output means 225 is an output means for outputting content drawing data. More specifically, transmission according to the USB standard via the USB terminal 66 and writing of data to a media card 85A such as a flash memory card or a hard disk card attached to the card I / F 80 are performed.
Each of the above-described functions is realized by organically cooperating hardware resources including the CPU 10 and the RAM 15 and various software stored in the ROM 30 and the HDD 40. Yes. Furthermore, these functions are controlled by, for example, an OS (Operating System) such as Windows (registered trademark) manufactured by Microsoft Corporation.

Next, the functional configuration of the image display device 3 will be described. The image display device 3 includes a data input unit 250, a data extraction unit 255, a rewrite direction storage unit 260, an image storage unit 265, a drawing unit 270, and a display unit 295.
The data input means 250 inputs content drawing data. Specifically, the USB card 122 receives the USB standard and the media card 85B on which the drawing data is written is mounted on the card I / F 130, and the drawing data is read.
The data extraction unit 255 is an extraction unit that extracts predetermined data from the drawing data. Specifically, information on the rewrite direction is extracted from the drawing data and stored in the rewrite direction storage unit 260 configured in the RAM 105. Further, the drawing data is developed into image data by the image storage means 265 and then transferred to the VRAM 155 for storage.
The drawing unit 270 includes a scanning signal control unit 275, a scanning signal driver 280 controlled by the scanning signal control unit 275, a data signal control unit 285, and a data signal driver 290 controlled by the data signal control unit 285. Is provided. The scanning signal control means 275 and the data signal control means 285 constitute the display controller 110.
Here, for example, when the display direction of the image display device 3 is the portrait mode (a) shown in FIG. 4 and the rewrite direction is the vertical direction (180A), the scanning signal control means 275 scans The signal driver 280 is instructed to advance scanning from the top to the bottom on the memory display 115. Further, the data signal control means 285 instructs the data signal driver 290 to access the VRAM 155 in which the image is stored from the top to the bottom in the image data. On the other hand, when the rewrite direction is the downward and upward direction (180B), the scanning signal control unit 275 instructs the scanning signal driver 280 to advance scanning from the bottom to the top on the memory display 115. give. Further, the data signal control means 285 instructs the data signal driver 290 to access the VRAM 155 in which the image is stored from the bottom to the top in the image data. In this case, the format of the image data arranged in the VRAM 155 assumes that the short side direction of the memory display 115 is one line.

As described above, in the passive drive memory display body 115, the scanning signal control unit 275 selects one line of the scanning signal driver 280 and applies a voltage while the pixels on the line are rewritten. As a result, when the rewrite direction is the a pattern 180A from the top to the bottom, the display is rewritten so that the curtain is drawn from the top to the bottom on the memory display 115. Similarly, when the rewrite direction is the b pattern 180B from the bottom to the top, the display is rewritten on the memory display 115 so that the curtain is drawn from the bottom to the top.
The scanning direction described above is not limited to the long side direction (180A, 180B) of the memory display 115. That is, the scanning signal driver 280 and the data signal driver 290 can be switched, and in addition, the scanning signal control means 275 and the data signal control means 285 are respectively connected to both drivers (280, 290). Since connection is possible, scanning in the short side direction (180C, 180D) of the memory-type display body 115 is also possible by a predetermined setting. In this case, the format of the image data arranged in the VRAM 155 is one line in the long side direction of the memory display 115.

<Operation of rewriting direction defining means>
Next, FIG. 6 is a flowchart showing a flow of processing in which the rewrite direction defining means 210 defines the rewrite direction based on the drawing data. FIG. 4 and FIG. The description will be given with reference.
When the process is started, first, the display direction set by the drawing data generation unit 205 is checked (step S300).
Here, when the display direction is set to the landscape display mode (landscape mode) ("horizontal" in step S300), it is checked whether or not to perform allocation display (step S305).
As a result of the examination, if the assignment display is not performed ("None" in step S305), the character direction which is a method of assembling characters is examined (step S315).
As a result of the examination, if the character composition is horizontal writing (“horizontal” in step S315), the rewriting direction is determined as c pattern 180C shown in FIG. 5F, and the rewriting direction is checked (step S370). (Step S335).
If the character composition is vertical writing (“vertical” in step S315), the rewriting direction is determined as the a pattern 180A shown in FIG. 5G, and the flow proceeds to the step of checking the rewriting direction (step S370) (step S340). ).
Further, in the step of checking whether or not to perform the allocation display (step S305), when the allocation display is performed ("Yes" in step S305), the process proceeds to the step of checking the allocation order (step S320).
Here, when the allocation order is from left to right (“left → right” in step S320), the rewriting direction is determined as the b pattern 180B shown in FIG. 5D, and the rewriting direction is checked (step S370). Proceed (step S345).
If the allocation order is from right to left (“right → left” in step S320), the rewrite direction is determined as a pattern 180A shown in FIG. 5E, and the process proceeds to the step of examining the rewrite direction (step S370). (Step S350).

Further, when the display direction is set to the portrait display mode (portrait mode) in the step of checking the display direction set by the drawing data generation unit 205 (step S300), “vertical” in step S300), It is checked whether or not to perform allocation display (step S310).
Here, when the assignment display is not performed (“None” in step S310), the character direction which is a way of assembling characters is checked (step S330).
If the character composition is horizontal writing (“horizontal” in step S330), the rewriting direction is determined as a pattern 180A shown in FIG. 5B, and the flow proceeds to the step of checking the rewriting direction (step S370) (step S370). S360).
If the character composition is vertical writing (“vertical” in step S330), the rewriting direction is determined to be the d pattern 180D shown in FIG. 5C, and the flow proceeds to the step of checking the rewriting direction (step S370) (step S370). S365).
Further, in the step of checking whether or not to perform the allocation display (step S310), when the allocation display is performed ("Yes" in step S310), the allocation order is allocated from top to bottom (step S325).
Subsequently, the rewrite direction is determined as a pattern 180A shown in FIG. 5A, and the process proceeds to the step of examining the rewrite direction (step S370) (step S355).

In the step of checking the rewrite direction (step S370), the rewrite direction is classified into one of a pattern or b pattern and c pattern or d pattern.
Here, when the rewriting direction is a pattern or b pattern (“a pattern or b pattern” in step S370), the short side direction is set to be drawn by one line (step S375), and then a series of The process ends.
If the rewrite direction is the c pattern or d pattern (“c pattern or d pattern” in step S370), the long side direction is set to be drawn in one line (step S380), and a series of processes Exit.
By the method described above, it is possible to define the direction in which content is displayed on the memory-type display body 115 and the direction in which the content is rewritten based on the information related to the allocation.

According to Embodiment 1 described above, there exist the following effects.
(1) Since the rewrite direction is defined based on the layout setting of the drawing data generation unit 205, the rewrite direction can be defined without the user inputting special data or the like.
(2) The rewrite direction input means 215 allows the user to preferentially define the rewrite direction.

(Embodiment 2)
Next, Embodiment 2 of the present invention will be described with reference to FIG. 7, FIG. 8, and FIG. In the following description, parts that are the same as those already described are given the same reference numerals and description thereof is omitted. FIG. 7 is a diagram illustrating a functional configuration of the image display system 1 according to the second embodiment. Among them, the bibliographic data generation unit 240A and the bibliographic data addition unit 245A on the host computer 2 side, and the position instruction unit 230 and the interrupt instruction unit 235 on the image display device 3 side are the functional units added in the second embodiment. It is.

  The bibliographic data generating unit 240A generates image data indicating the bibliographic information of the content such as the title name and page information of the content, for example. Specifically, the bibliographic data generation unit 240A acquires bibliographic information from the information header generated by the drawing data generation unit 205, and generates image data corresponding to each page of content based on the bibliographic information. .

  The bibliographic data adding unit 245A creates the bibliographic data generating unit 240A based on the information indicating the rewrite direction defined by the rewrite direction defining unit 210 so that the bibliographic information is displayed on the memory display 115 before the content. The added image data is added to a predetermined position of the drawing data.

  Here, the functions of the bibliographic data generating unit 240A and the bibliographic data adding unit 245A will be described more specifically with reference to FIG. For example, when the display direction of the image display apparatus 3 is the portrait mode (a) shown in FIG. 8 and the character composition is vertical writing, the rewriting direction defining means 210 changes the rewriting direction from the right side to the left side. It is defined in d pattern (180D). Further, the bibliographic data generation means 240A creates image data displaying the title name of this content, the displayed page, and the total page for each page from the information header. Subsequently, the bibliographic data adding means 245A receives the information of the rewriting direction, and the bibliographic information image is displayed on the right side of the content image so that the bibliographic information unit 119 displays the right side of the content unit 118 on the memory display 115. The drawing data of the image to which is added is generated. In this case, the bibliographic data adding unit 245A selects an image corresponding to the content image of each page from the bibliographic information images generated by the bibliographic data generating unit 240A. Similarly, also in the landscape mode (b) of FIG. 8, the bibliographic data adding means 245A receives the information of the c pattern (180C) in which the rewriting direction is from the upper part to the lower part, and the content part 118 is displayed on the memory display 115. In order to display the bibliographic information portion 119 above the image, drawing data of an image in which an image of bibliographic information is added above the content image is generated. As described above, the bibliographic data adding unit 245A adds the bibliographic information image to the start side of the rewrite direction pattern on the memory display 115.

  On the other hand, as in the landscape mode (c) of FIG. 8, it is possible to add the bibliographic information image to the lower part of the content image and start the display from the lower part of the content image. In other words, the image position of the bibliographic information added by the bibliographic data adding unit 245A is written in the information header, and the drawing unit 270 of the image display device 3 controls the scanning signal according to the rewriting direction information and the image position of the bibliographic information. The means 275 and the data signal control means 285 are caused to start displaying downward (182C) from the position of the bibliographic information unit 119 displayed on the memory display 115. After all the bibliographic information part 119 is displayed on the memory display 115, the drawing unit 270 continues downward from the uppermost position (184C) with respect to the scanning signal control unit 275 and the data signal control unit 285. The content portion 118 is displayed. Even in such a method, bibliographic information can be displayed before content information.

  Returning to FIG. 7, the position instructing unit 230 instructs the position of the content to be displayed on the memory display 115 such as the page turning button 145. Further, the interrupt instruction unit 235 causes the drawing unit 270 to update the content of the image drawn on the memory display 115 with the highest priority in accordance with the instruction of the position instruction unit 230.

  Here, the function of the interrupt instruction means 235 will be specifically described with reference to FIG. For example, when the image 116B of the first page is displayed on the image display device 3, when the page turning button 145B in the feed direction is pressed, an instruction to display the next page is issued from the position instruction unit 230 to the interrupt instruction unit 235. Sent to. In response to this instruction, the interrupt instruction unit 235 instructs the scanning signal control unit 275 and the data signal control unit 285 of the drawing unit 270 to draw the image 116A of the second page. As a result, with the movement of the display rewrite line 117B, the image 116A of the second page from the upper side of the memory display 115 is sequentially rewritten for each pixel column. Here, when the page turning button 145B in the feed direction is pressed again, the interrupt instructing unit 235 makes three pages for the scanning signal control unit 275 and the data signal control unit 285 of the drawing unit 270 as described above. The drawing of the eye image 116C is instructed. Since the interrupt instructing unit 235 gives an instruction to update the image on the memory display 115 in preference to other processing, rewriting to the image 116A on the second page is interrupted, and the display rewriting line 117B stops. Next, a new display rewrite line 117A appears and starts moving, and accompanying this movement, the image 116C on the third page from the upper side of the memory display 115 is sequentially rewritten for each pixel column.

According to the second embodiment, in addition to the effects (1) and (2) described in the first embodiment, the following effects can be achieved.
(3) Since the bibliographic information is displayed with priority over the content, the visibility of the bibliographic information related to the content displayed on the image display device 3 is improved.
(4) When the page turning operation is executed, the image displayed on the memory display 115 immediately reacts, so that the operability of the image display device 3 is improved.
(5) When the page turning button 145B is continuously pressed, the bibliographic information corresponding to the number of times of pressing is preferentially displayed on the memory display 115, so that a predetermined page search for content is facilitated. .

(Embodiment 3)
Next, Embodiment 3 of the present invention will be described with reference to FIG. FIG. 10 is a diagram illustrating a functional configuration of the image display system 1 according to the third embodiment. Among these, the bibliographic data generating unit 240B and the bibliographic data adding unit 245B on the image display device 3 side are functional units added in the third embodiment. In the first embodiment, the data extraction unit 255 extracts information related to the rewrite direction from the input drawing data. However, in the third embodiment, bibliographic information is further extracted to obtain a bibliographic data generation unit. Send to 240B. Specifically, since the bibliographic information is included in the information header described above, the data extraction unit 255 extracts the information header from the drawing data and sends it to the bibliographic data generation unit 240B.
The functions of the bibliographic data generation unit 240B and the bibliographic data addition unit 245B are the same as those in the above-described second embodiment, and thus are omitted.

  According to the third embodiment, in addition to the effects (1) and (2) described in the first embodiment, the effect (3) described in the second embodiment can be achieved.

As mentioned above, although this invention was demonstrated based on Embodiment 1, Embodiment 2, and Embodiment 3 which illustrated, this invention is not limited to these, The modification as described below can also be assumed.
(1) When two pages are allocated and displayed, in the above-described embodiments, after all the images of the preceding page (one page) are displayed first, the images of the subsequent page (two pages) are continuously displayed. However, it is not limited to this order, and it may be rewritten in accordance with the way the characters are assembled, as in the case of no layout display.
(2) In these embodiments described above, a passive display body having display memory properties is adopted, but the present invention is not limited to such a display body. That is, the present invention can also be applied to a display body that is active and does not have display memory. Further, even a display body that rewrites instantaneously may be applied so as to provide rewriting according to the content as an effect.
(3) The data extraction unit 255 of the image display device 3 extracts information on the rewrite direction from the drawing data. If the information on the rewrite direction is not explicitly included in the drawing data, the data extracting unit 255 The image display device 3 may define the rewrite direction based on information indicated by other data.

1 is an external configuration diagram showing an external appearance of an image display system according to Embodiment 1 of the present invention. FIG. 2 is a configuration diagram illustrating a hardware configuration of the image display system according to the first embodiment. FIG. 2 is a functional configuration diagram illustrating a functional configuration of the image display system according to the first embodiment. FIG. 3 is a diagram illustrating a display direction of the image display device according to the first embodiment. FIG. 3 is a diagram for explaining a rewriting direction of the image display device according to the first embodiment. 5 is a flowchart showing a flow of processing in which the rewrite direction defining means in the first embodiment defines the rewrite direction. The function block diagram which shows the function structure of the image display system 1 in Embodiment 2 of this invention. FIG. 5 is a diagram for explaining a display direction of the image display device according to the second embodiment. FIG. 3 is an external configuration diagram illustrating an external appearance of an image display system according to the second embodiment. The function block diagram which shows the function structure of the image display system 1 in Embodiment 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Image display system, 2 ... Host computer, 3 ... Image display apparatus, 10 ... CPU, 15 ... RAM, 20 ... Display controller, 25 ... Display, 30 ... ROM, 35 ... Hard disk controller, 40 ... HDD, 45 ... Mouse Controller, 50 ... Mouse, 55 ... Keyboard controller, 60 ... Keyboard, 65 ... USB controller, 66 ... USB terminal, 70 ... Bus, 75 ... Main unit, 80 ... Card I / F, 82 ... USB cable, 85 ... Media card , 100 ... CPU, 105 ... RAM, 110 ... display controller, 115 ... memory display, 117 ... display rewrite line, 118 ... content part, 119 ... bibliographic information part, 120 ... USB controller, 122 ... USB terminal, 125 ... ROM, 130 ... card I / F, 1 0 ... input I / F, 145 ... button, 150 ... bus, 155 ... VRAM, 200 ... content creation means, 205 ... drawing data generation means, 210 ... rewrite direction defining means, 215 ... rewrite direction input means, 220 ... data composition Means, 225 ... Data output means, 240 ... Bibliographic data generation means, 245 ... Bibliographic data addition means, 250 ... Data input means, 255 ... Data extraction means, 260 ... Rewrite direction storage means, 265 ... Image storage means, 270 ... Drawing Means, 275 ... scanning signal control means, 280 ... scanning signal driver, 285 ... data signal control means, 290 ... data signal driver, 295 ... display means.

Claims (8)

A drawing data output device for outputting drawing data of content including characters;
An image display system in which an image indicated by input drawing data is displayed on a display body constituted by a predetermined pixel array and connected to be able to exchange drawing data.
The drawing data output device
Drawing data generating means for generating drawing data of the content that can be displayed on the image display device;
In order to quickly change the content including the characters displayed on the display body to a legible state, the rewriting direction of the image on the display body is defined based on predetermined information included in the drawing data. Prescribing means to
Adding means for adding information indicating the rewriting direction to the drawing data;
Output means for outputting the drawing data;
The image display device
Input means for inputting the drawing data;
Extracting means for extracting information indicating the rewriting direction from the drawing data;
An image display system comprising: a drawing unit that draws an image indicated by the drawing data for each pixel column of the display body along the rewriting direction indicated by the information. The image display system according to claim 1,
The predetermined information is
The display direction of the content;
How to compose the letters;
An image display system characterized by including the number of pages that can be displayed at a time on the display body by dividing the content into pages. The image display system according to claim 1, wherein
The rewriting direction is
Either one of the vertical direction and the horizontal direction in plan view of the display body;
And a direction in which the pixel row is rewritten on the display body. The image display system according to any one of claims 1 to 3,
The drawing data output device
Bibliographic data generating means for generating image data indicating the bibliographic information of the content;
Bibliographic data addition means for adding the image data to a predetermined position of the drawing data based on the information indicating the rewriting direction so that the bibliographic information is displayed on the display body before the content. An image display system characterized by the above. The image display system according to claim 4,
The bibliographic data adding means is:
An image display system, wherein an image indicated by the image data is added to a first drawing position in the rewriting direction in an image indicated by the drawing data. An image display device that displays an image of content including characters on a display body configured by a predetermined pixel row,
An input unit that includes information related to a rewriting direction of the image displayed on the display body, and that inputs drawing data indicating an image of the content;
Extraction means for extracting information indicating a rewriting direction of the image on the display body from the drawing data;
Drawing means for drawing the image indicated by the drawing data for each pixel column of the display body along the rewriting direction indicated by the information;
The information relating to the rewriting direction of the image is defined so that the content including the characters displayed on the display body is quickly changed to a readable state. The image display device according to claim 6,
The input drawing data further includes bibliographic information of the content,
The extraction means further extracts the bibliographic information from the drawing data,
Bibliographic data generating means for generating image data indicating the bibliographic information;
Bibliographic data addition means for adding the image data to a predetermined position of the drawing data based on the information indicating the rewriting direction so that the bibliographic information is displayed on the display body before the content. An image display device characterized by the above. The image display device according to claim 6, wherein
Position indicating means for indicating the position of the content to be displayed on the display body;
An image display apparatus, further comprising: an interrupt instruction unit that updates the content of the image drawn on the display body with the highest priority according to the instruction.

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