JP2006220710A - Information display device and display information generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a time required until a desired page is displayed when a desired page is searched by continuously displaying each page of content.
SOLUTION: The priority of a band-like area including a character with the largest font size of a display target page, that is, a character describing a most important matter is set high. Therefore, at the time of switching display of information on the display target page, before all the information on the display target page is displayed, the user can grasp the outline of the display target page, and before the switching display of the information is completed, The switching display can be stopped and the switching display of information on the next page can be started. As a result, when each page is continuously displayed, the time required for switching display of pages other than the desired page can be shortened, and the time required for displaying the desired page can be shortened.
[Selection] FIG.

Description

The present invention relates to an information display device that switches and displays information on each page of content on a display, and a display information generation device suitable for the information display device.
Conventionally, as this type of technology, information on each page of content such as an electronic book divided into predetermined pages is displayed on a display such as an electrophoretic display or a cholesteric liquid crystal so that the user can browse the content. There is an apparatus (for example, refer to Patent Document 1).

In addition, when page development takes time in page processing, there is a method of speeding up page processing using a multi-buffer (see, for example, Patent Document 2). Furthermore, there is a method for speeding up the generation of page data in a multiprocessor configuration (see, for example, Patent Document 3).
JP-A-11-271799 Japanese Patent Laid-Open No. 5-16442 Japanese Patent Laid-Open No. 5-201077

  However, in the conventional display device, when searching for a desired page by continuously displaying each page of content, a display body with a slow drawing speed such as an electrophoretic display body or a cholesteric liquid crystal is used. When used as a display, during continuous display, the time required to display all the information of pages other than the desired page increases, and as a result, the time required to display the desired page increases. There was a fear of doing.

Also, the method using a multi-buffer or multi-processor is not for solving the problem that the time required until a desired page is displayed increases.
The present invention has been made for the purpose of solving the above-described problems of the prior art, and by displaying each page of content continuously, when searching for a desired page, the desired page is It is an object of the present invention to provide an information display device capable of shortening the time required for display and a display information generation device suitable for the information display device.

  In order to solve the above-described problem, an information display device of the present invention is an information display device that switches and displays information on each page of content on a display, and displays a display area of the display at the time of switching display of the information on the page. An acquisition means for acquiring band data including information on a band-shaped area to be divided in the vertical direction or the horizontal direction and information on priority of the band-shaped area, and a band-shaped area having a high priority based on the acquired band data And drawing means for drawing on the display in order from the information therein.

Further, when an instruction to switch to another page is input during the switching display of the information on the page, after the display of the band-like area during the display process is finished, the switching display is stopped, You may make it provide the re-switching instruction | indication means which starts the switching display of the information of a page.
Furthermore, in the information display device of the present invention, the display may be a memory display that continues to display information in the display area even when the supply of power is stopped. Examples of the memory display body include an electrophoretic display, a cholesteric liquid crystal display, and an electrodeposition display.

  In addition, storage means for acquiring and storing information and band data of each page of content from an external device, the acquisition means acquires information of the display target page and band data from the storage means, and the drawing The means may draw the information on the display target page and the band data on the display in order from the information in the band-like area having the higher priority order.

On the other hand, a display information generation apparatus suitable for the information display apparatus of the present invention generates generation means for generating document data including information on each page of content and band data, and transmits the generated document data to an external apparatus. And a transmission means.
Further, the generation unit may generate document data by setting a higher priority for a band-like region including the character as the font size of the character is larger.

Further, the generation unit may generate document data by setting a priority order of a band-like region including the character based on the attribute information of the character.
According to such a configuration, by setting the priority of the band-like area including the characteristic information of the display target page to be high, all the information of the display target page is displayed when the information of the display target page is switched. It is possible to make the user grasp the outline of the display target page before starting. Therefore, by continuously displaying each page of the content, when searching for a desired page, the user does not indicate that the display target page is not the desired page at the stage where the information of the belt-like area having a high priority is displayed. If it is determined, before the switching display of the information is completed, the switching display can be stopped and the switching display of information on the next successive page can be started. As a result, when each page is continuously displayed, the time required for switching display of pages other than the desired page can be shortened, and the time required for displaying the desired page can be shortened.

Hereinafter, an embodiment of an information display system to which an information display device and a display information generation device according to the present invention are applied will be described based on the drawings.
In this information display system, first, bitmap data of each page of content to be displayed is generated by a personal computer, and a plurality of band-like areas (rectangular areas) for dividing the bitmap data in the horizontal direction are generated. Band data including coordinates and display order (priority order) of each band-like area is set for each bitmap data. Then, the set band data is added to the compressed data of the bitmap data to generate document data for each content, and the document data is sent to the information display device.

  Further, the information display system first acquires and stores a plurality of document data sent from the personal computer by the information display device. Then, when a content to be displayed is selected and an operation corresponding to page feed or an operation corresponding to page return is performed, the content data of the content among the stored document data is selected according to the operation. The compressed data of the bitmap data of the page is expanded and stored in a temporary storage device (NVRAM). Next, the bitmap data stored in the NVRAM is drawn for each band-like region in the priority order indicated by the band data added to the bitmap data.

<Configuration of information display system>
FIG. 1 is a perspective view showing an appearance of an information display system 1 to which the present invention is applied. FIG. 2 is a block diagram showing the internal configuration of the personal computer 2 constituting the information display system 1, and FIG. 3 is a block diagram showing the internal configuration of the information display device 3. This information display system 1 stores a personal computer 2 that generates and transfers document data of content to be displayed, and stores the transferred document data. When a page operation is performed by a user, a target page of a predetermined content It is comprised including the information display apparatus 3 which displays.

<Configuration of personal computer>
As shown in FIG. 2, the personal computer 2 includes a CPU (Central Processing Unit) 10, a storage 20, a RAM (Random Access Memory) 30, a display 40, an input control unit 50, an input device 50a, and a data interface (hereinafter referred to as “data”). Also referred to as “I / F (Inter Face)”. In this embodiment, since the operation of transferring and storing the document data to the information display device 3 is performed using the function of the printer driver of the personal computer 2, the operation is also referred to as “printing”.

  The CPU 10 controls the personal computer 2 as a whole, and reads and executes programs related to various processes stored in the storage 20 in accordance with various instruction signals input from the input control unit 50. In addition, the CPU 10 performs processing for converting print target data (content data) stored in the storage 20 into document data and transferring it to the information display device 3. Then, the CPU 10 stores various processing results in a RAM 30 described later.

The storage 20 is configured by a nonvolatile memory. The storage 20 stores various programs for controlling each unit of the information display device 3.
When the CPU 10 executes processing, the RAM 30 forms a work area and stores the processing result.
The display 40 displays various processing results obtained by the CPU 10 on a display screen.

The input control unit 50 has an interface function for controlling signal input from the input device 50 a to the CPU 220. And the input control part 50 receives the input signal which the input apparatus 50a generate | occur | produces, performs a predetermined process, and outputs the process result to CPU10.
The input device 50a is configured by an input device such as a keyboard and a mouse. The input device 50a can accept an instruction input from the user.

The data I / F 60 is an interface for transferring document data from the personal computer 2 to the information display device 3, and is configured by a communication interface or the like.
As shown in FIG. 4A, the document data includes a header (file name, title, number of thumbnails, document direction, number of pages), block information (thumbnail block information, page block information), band information, and data. (Thumbnail image data of each page of content, bit map data compressed data of each page). As shown in FIG. 4B, the thumbnail block information includes an ID, an offset to data, and a data size. Further, as shown in FIG. 4 (c), the band information is configured to include the upper left x coordinate x, y coordinate, width w, height h, and priority priority of each band-like region.

<Functional part of personal computer>
The print processing unit 100, the band division unit 110, and the data transfer unit 120 are functional units realized by the CPU 10.
The print processing unit generates a drawing command sequence in response to a print start command from the application, and then executes print processing for executing document data generation processing and document data transfer processing described later.
The band dividing unit 110 is executed for each page of the content and generates bitmap data of the processing target page according to the drawing command generated by the printing process, and generates band data of the processing target page to generate document data. The document data generation process to be generated is executed.

The data transfer unit 120 executes a data transfer process in which the document data generated by the document data generation process is transferred to the information display device 3 via the data I / F 60 and stored.
On the other hand, as shown in FIG. 3, the information display device 3 includes a data I / F 200, a storage 210, a CPU 220, a program storage unit 230, an NVRAM 240, a graphic accelerator 250, a display driving unit 260, a display panel 260a, an input control unit 270, An HI (Human Interface) device 270a and a power source 280 are included.

The data I / F 200 is an interface for transferring document data from the personal computer 2 to the information display device 3, and is configured by, for example, a communication interface. When the document data is transferred from the personal computer 2, the data I / F 200 stores the transferred document data in the storage 210.
The storage 210 is configured by a nonvolatile memory such as a flash memory. The storage 210 stores data input from the data I / F 200.

  The CPU 220 controls the entire information display device 3 and reads and executes programs related to various processes stored in the program storage unit 230 in accordance with various instruction signals input from the input control unit 270. Further, the CPU 220 performs various processes for drawing and displaying the document data stored in the storage 210 on the display panel 260a. Then, the CPU 220 stores the processing results of the various processes in the NVRAM 240 described later.

The program storage unit 230 is configured by a nonvolatile memory. The program storage unit 230 stores various programs for controlling each unit of the information display device 3.
The NVRAM 240 is a non-volatile memory (a memory that maintains retained data even when the power is turned off) such as a FRAM (Ferroelectric Random Access Memory), an MRAM (Magnetoresistive Random Access Memory), and an nvSRAM (non-volatile Static Random Access Memory). Composed. The NVRAM 240 forms a work area and stores the processing result when the CPU 220 executes the process.

  The graphic accelerator 250 is hardware for performing a drawing process of an image displayed on the display panel 260a at high speed in accordance with a command from the CPU 220. Specifically, the graphic accelerator 250 performs processing such as decompressing the compressed data input from the CPU 220. Then, the graphic accelerator 250 outputs drawing data for drawing the graphic subjected to the drawing process on the display panel 260 a to the display driving unit 260.

  The display driver 260 directly controls the display panel 260a and draws drawing data input from the graphic accelerator 250 on the display panel 260a. Specifically, the display driving unit 260 includes a pixel writing unit 261 to which drawing data is input by the graphic accelerator 250. Then, the display driving unit 260 refers to the drawing data input to the pixel writing unit 261 and drives the X driver and Y driver of the display panel 260a to draw the input drawing data on the display panel 260a. To do. The X driver is a driver that drives and selects a pixel column that extends in a horizontal direction in plan view, and the Y driver is a driver that draws drawing data of the pixel column on the selected pixel column.

  Further, the display panel 260a includes an A4 size high pixel density (multi-pixel) memory display device (a display device that maintains a display screen even when the power is turned off). The display panel 260a displays pixel data on a predetermined pixel in accordance with the control of the display driving unit 260. For example, an electrophoretic display, a cholesteric liquid crystal display, or an electrodeposition display can be employed as the display panel 260a.

  The input control unit 270 has an interface function of controlling signal input from the HI device 270a to the CPU 220. The input control unit 270 receives an input signal generated by the HI device 270a, performs predetermined processing, and outputs the processing result to the CPU 220. Specifically, the input control unit 270 outputs a signal for setting a flag for identifying the button to the CPU 220 when a direction button or a determination button (described later) is pressed for 100 msec. Or more. The button pressing detection unit 271 executes the pressing operation detection process.

The HI device 270a is configured by an input device such as a cross-shaped direction button that can indicate each of the upper, lower, left, and right directions and a button-shaped determination button that can be pressed. The HI device 270a can accept an instruction input to the information display device 3 from the user.
The power source 280 is configured by a primary battery or a secondary battery. The power supply 280 supplies power to each unit for appropriately operating each unit in the entire information display device 3.

<Functional part of information display device>
Further, the page turning detection unit 300, the analysis / shaping unit 310, and the drawing processing unit 320 are functional units realized by the CPU 220 and the graphic accelerator 250.
The page turning detection unit 300 executes a page turning mode setting process for storing the page number of a page to be displayed in response to the pressing operation of the direction button by the user.
The analysis / shaping unit 310 and the drawing processing unit 320 read the page number of the page to be displayed, and the bitmap data of the page with the read page number is used as it is when the page drawing mode is the normal mode. Drawing is performed, and when the page drawing mode is the band mode, a development arrangement process for drawing each band-like region in the priority order indicated by the band data is executed.

  The format of the drawing element developed by the analysis / formatting unit 310 is also referred to as “intermediate format”. In this embodiment, the analysis / shaping unit 310 develops the bitmap data of each page as the main process, but the present invention is not limited to this. For example, the processing for each band-like region is performed not only by the drawing processing unit 320 but also by the analysis / shaping unit 310, and by gradually developing the bitmap data, the development and the drawing are parallelized to speed up the apparent processing. Is also possible.

<Operation of information display device>
Next, a print instruction request process executed by the CPU 10 of the personal computer will be described with reference to the flowchart of FIG. As shown in FIG. 5, in the print instruction request process, first, in step S101, print settings (settings such as page size and page margin when displaying each page of the processing target content on the information display device 3) are displayed. 40.

Next, the process proceeds to step S102, where it is determined whether or not a command for urging execution of printing is issued from the input control unit 50. If the command is issued, the process proceeds to step S103.
Next, the process proceeds to step S103, and a printing process described later is executed.
Next, the printing process executed in step S103 (print processing unit 100) of the print instruction request process will be described with reference to the flowchart of FIG. This print instruction request process is a process executed for each page of the content to be processed. As shown in FIG. 6, first, in step S201, the print setting displayed in step S101 of the print instruction request process is displayed. And a drawing command sequence for generating bitmap data of the processing target page, based on the drawing segment data of the processing target content stored in the storage 20.

Next, the process proceeds to step S202, and a document data generation process described later is executed.
Next, the process proceeds to step S203, and a document data transfer process described later is executed.
Next, document data generation processing executed in step S103 (print processing unit 100, band dividing unit 110, data transfer unit 120) of the printing process will be described with reference to the flowchart of FIG. In this document data generation process, as shown in FIG. 7, first, in step S301, it is determined whether or not this step is executed for the first time on the processing target page. If it is the first time to execute (Yes), the process proceeds to step S302. If it is not performed for the first time (after the second time), the process proceeds to (No) step S310.

In step S302, the page setting of the processing target page is read from the drawing command sequence generated in step S201 of the printing process.
In step S303, bitmap data (page canvas) of the processing target page is generated based on the drawing command sequence generated in step S201 of the printing process.
Next, the process proceeds to step S304, and one piece of drawing segment data of the processing target page is read from the drawing command sequence generated in step S201 of the printing process.

Next, the process proceeds to step S305, and it is determined whether the drawing segment from which data has been read in step S304 is “character”, “line drawing”, or “image”. If it is “character”, the process proceeds to step S306. If it is “line drawing”, the process proceeds to step S307. If it is “image”, the process proceeds to step S308.
In the step S306, the position, width and height of the drawing area (text area) in which the drawing piece whose data has been read in the step S304 and the size (font size) of the drawing piece are based on the data. Then, the data is stored in a table (hereinafter also referred to as “band table”), and the process proceeds to step S309. As shown in FIG. 8, the band table includes ID, Flg (t is text (character), i is image (line drawing), g is graphic (image)), x, y, w, h (of the area). Xy coordinates in the upper left, width and height) and size (font size, set to “0” if Flg is not t).

In step S307, the position, width, and height of the area (line drawing area) for drawing the drawing segment whose data has been read in step S304 are stored in the band table based on the data. The process proceeds to step S309.
In step S308, the position, width, and height of the area (image area) for drawing the drawing segment whose data has been read in step S304 are stored in a band table based on the data, The process proceeds to step S309.

In step S309, it is determined whether or not all drawing segment data of the processing target page has been read in step S304. Then, if all are read, the process proceeds to step S301, and if all are not read, the process proceeds to step S304.
On the other hand, in step S310, the maximum value of size (font size) is detected from the band table of the page to be processed.

Next, the process proceeds to step S311, and the maximum value of the size detected in step S310 is set as a search size for setting the band-like area and the display order of the band-like area.
In step S312, the number of entries (rows) in which the numerical value of the size item in the band table is equal to or larger than the search size set in step S311 is counted.
Next, the process proceeds to step S313, where the number of entries counted in step S312 is divided by the total number of pages of the processing target content, and the division result determines that the entry corresponds to the heading of the processing target page. It is determined whether or not it is larger than the heading level setting value. If it is equal to or less than the heading level setting value (Yes), the process proceeds to step S314. If it is greater than the heading level setting value (No), the process proceeds to step S315.

In step S314, the search size (font size) is reduced by one point, and then the process proceeds to step S312.
On the other hand, in step S315, band data for displaying the processing target page on the information display device 3 is generated. Specifically, first, a band-like area (a rectangular area extending in the horizontal direction in plan view) including an area for drawing a character (drawing piece) having a size larger than the search size set in step S311 is set. Next, as shown in FIG. 9, all drawing pieces (entries) included in the set band-like area are given “1” as the display order priority in the processing target page, and are included in the band-like area. All the drawing segments that are not present are given priority “2”.

  In the present embodiment, an example in which the priority order is set according to the font size is shown, but the present invention is not limited to this. For example, when the attribute information of the drawing character string (for example, document information such as “level 1 headline”, “text”, “title”, “footnote”) can be acquired from the application, the priority order is based on the attribute information information. May be set. Moreover, priority may be set for each band-like region in accordance with various instruction operations by the user.

Next, the process proceeds to step S316, and a portion corresponding to the processing target page is generated and written out of the file header constituting the document data of the processing target content.
In step S317, the band data generated in step S315 is written out as band data corresponding to the processing target page in the file header constituting the document data of the processing target content (the document data is generated). To do).

  Next, the process proceeds to step S318, and the compressed data of the bitmap data generated in step S303 is generated and written, and the band data written in step S317 is associated with the written compressed data. This calculation process is terminated.

<Operation of Information Display Device 3>
Next, a press button detection process executed by the button press detection unit 271 will be described with reference to the flowchart of FIG. This push button detection process is executed every time a predetermined time elapses. As shown in FIG. 4, first, in step S401, a variable i for measuring the operation time of the direction button and the decision button is measured. (A variable indicating the number of times a loop including steps S402 to S405 described later is executed) is initialized to “0”. As will be described later, the loop takes 10 msec. Or more to execute once.

  Next, the process proceeds to step S402, where it is determined whether either the direction button or the determination button is pressed by the user. Specifically, it is determined whether or not a signal indicating that the direction button or the determination button is pressed is generated from the HI device 270a. If the signal is generated (Yes), the process proceeds to step S403. If the signal is not generated (No), the calculation process is terminated.

In step S403, “1” is added to the variable i.
Next, the process proceeds to step S404, and it is determined whether or not either the direction button or the determination button is pressed by the user and the state in which the signal is generated from the HI device 270a continues for 100 msec. Or more. Specifically, it is determined whether or not the loop composed of steps S402 to S405 has been repeatedly executed 10 times or more, that is, whether or not the variable i is larger than “10”. If the variable i is “10” or less (Yes), the process proceeds to step S406. If the variable i is greater than “10” (No), the process proceeds to step S405.

In step S405, after waiting for 10 msec., The process proceeds to step S402.
On the other hand, in step S406, based on the signal output from the HI device 270a, a signal for setting a button pressing flag corresponding to each button is output to the CPU 220 in order to identify the button pressed by the user. Then, this calculation process is terminated.

  Next, the page turning mode setting process executed by the page turning detection unit 300 (CPU 220) will be described with reference to the flowchart of FIG. This page turning mode setting process is executed every time a predetermined time elapses after the content to be displayed is selected (however, the development / placement process is executed by the analysis / shaping unit 310 and the drawing processing unit 320). As shown in FIG. 11, first, in step S501, based on the document direction included in the document data of the content, a button on the left side of the direction button (hereinafter referred to as “left direction instruction”) is processed. The page forward function and the page return function are associated with the right button (hereinafter also referred to as “right direction button”). Specifically, when an actual book is composed of display contents, as shown in FIG. 12A, the book is arranged so as to read from the right page to the left page in a spread state (document direction). ) Is a left direction), page turn is associated with the left direction instruction button, and page return is associated with the right direction instruction button. In addition, as shown in FIG. 12B, when the document is arranged so as to read from the left page to the right page in a spread state (when the document direction is the right direction), the right direction instruction button is displayed. Corresponds to page feed, and correlates page return to the left direction instruction button.

Next, the process proceeds to step S502, and it is determined whether or not the button pressing flag of the button associated with page feed in the step S501 is set. If the button pressing flag is in the set state (Yes), the process proceeds to step S503. If the button pressing flag is not in the set state (No), the process proceeds to step S504.
In step S503, the page turning mode indicating whether to perform page turning or page returning is set to the page turning mode, and then the process proceeds to step S506.

On the other hand, in step S504, it is determined whether or not the button pressing flag of the button associated with page return in step S501 is set. If the button pressing flag is set (Yes), the process proceeds to step S505. If the button pressing flag is not set (No), the calculation process is terminated.
In step S505, the page turning mode is set to the page return mode, and then the process proceeds to step S506.

  In step S506, the page number of the page to be displayed is stored in the NVRAM 240, and the calculation process is terminated. Specifically, when the page turning mode is the page turning mode, the page number is stored as the page to be displayed on the page that has been displayed so far or the next page of the page being displayed. Further, when the page turning mode is the page return mode, the page number is stored as the page to be displayed on the previous page of the page that has been displayed or the page that was being displayed.

  Next, an expansion arrangement process executed by the analysis / shaping unit 310 and the drawing processing unit 320 (the CPU 220, the graphic accelerator 250) will be described with reference to the flowchart of FIG. This printing process is executed when the page turning mode setting process is completed. As shown in FIG. 9, first, in step S601, the page to be displayed stored in the page turning mode setting process. Get page number of.

  Next, the process proceeds to step S602, where it is determined whether or not a normal mode (a mode in which pages to be displayed are sequentially displayed on the information display device 3 from the top in plan view) is set as the page drawing mode. If the normal mode is set, the process proceeds to step S603, and the normal mode is not set (the band mode (the mode in which the information display device 3 displays the pages to be displayed in order of priority) is set). ), The process proceeds to step S606. Note that a method for setting the page drawing mode by the user may be used.

In the step S603, the compressed data of the bitmap data of the page to be displayed is acquired from the document data of the selected content and expanded, and the expanded bitmap data is stored in the NVRAM 240 as an intermediate format of the page. Let
Next, the process proceeds to step S604, and all the bitmap data stored in the NVRAM 240 is output to the pixel writing unit 261, and then this calculation process is terminated.

On the other hand, in step S605, the compressed data of the bitmap data of the page to be displayed is acquired and expanded from the document data of the selected content, and the band data associated with the compressed data is acquired. Then, the expanded bitmap data and band data are stored in the NVRAM 240 as an intermediate format of the page.
Next, the process proceeds to step S606, and a display level indicating that a band-like area having a priority of 1 is drawn on the display target page is set to level 1.

Next, the process proceeds to step S <b> 607, and among the bitmap data stored in the NVRAM 240, the pixel writing unit is the one in the band-like region including the drawing segment having the priority “i” (i corresponds to the level of the display level). 261 (display drive unit 260).
Next, the process proceeds to step S608, and it is determined whether or not a page feed or page return operation is performed by the user. Specifically, it is determined whether a signal indicating that the left direction instruction button is pressed or a signal indicating that the right direction button is pressed is output from the HI device 270a. Then, when the signal is output, the calculation process is terminated, and when the signal is not output, the process proceeds to step S609.

In step S609, it is determined whether or not the display level is the maximum level (level 2). If it is the maximum level (Yes), this calculation process is terminated, and if it is not the maximum level (when it is Level 1) (No), the process proceeds to Step S610.
In step S610, the display level is set to level 2, and then the process proceeds to step S607.

<Specific operation of information display device>
Next, the operation of the information display apparatus according to the present embodiment will be described in detail based on a specific situation.
First, it is assumed that document data of a plurality of contents is generated by the personal computer 2, and the generated document data is transferred to the information display device 3 and stored in the storage 210. After the content to be displayed (content whose document direction is leftward) is selected by the user, the user presses the direction button corresponding to the document direction, that is, the left direction button in order to search for a desired page. Suppose you continue. Then, a signal indicating that the left direction instruction button is pressed is output from the HI device 270a. When the button press detection unit 271 executes the press button detection process, as shown in FIG. 10, first, in step S401, the variable i is set to “0”, and the determination in step S402 becomes “Yes”. In step S403, “1” is added to the variable i (the variable i is set to “2”), the determination in step S404 becomes “No”, and in step S405, the process waits for 10 msec. The flow is repeated in step S402. Then, when 100 msec. Or more has elapsed and the above flow is repeated 10 times and the variable i becomes “11”, the determination in step S404 becomes “Yes”, and in step S406, the button press flag corresponding to the left direction instruction button After the signal for setting is output to the CPU 220, the arithmetic processing is terminated.

  Further, it is assumed that the page turning mode setting process is executed by the page turning detection unit 300 (CPU 220) after the pressing button detection process is completed. Then, as shown in FIG. 11, first, in step S501, page feed is associated with the left direction instruction button of the direction button, page return is associated with the right direction instruction button, and the press button detection process performs the following. Since the button pressing flag of the left direction instruction button has been set, the determination in step S502 is “Yes”. In step S503, the page turning mode is set to page feed mode. In step S506, the next page of the page that has been displayed is set as the display target page, the page number is recorded, and the calculation process is terminated. .

  Further, when the page turning mode setting process is completed, the development / placement process is executed by the analysis / shaping unit 310 and the drawing processing unit 320 (the CPU 220, the graphic accelerator 250). As shown in FIG. Thus, the page number of the page to be displayed stored in the page turning mode setting process is acquired. If the band mode is set as the page drawing mode by the user, the determination in step S602 is “No”. In step S605, the compressed data of the bitmap data of the page to be displayed is displayed from the content document data. The band data associated with the compressed data is acquired and expanded, and the expanded bitmap data and band data are stored in the NVRAM 240 as an intermediate format of the page. Then, in step S606, the display level is set to level 1, and in step S607, among the bitmap data stored in the NVRAM 240, the one in the band-like region including the drawing segment having the priority “1” is the pixel writing unit. 261 (display drive unit 260). Then, the display driver 260 drives the X driver and Y driver of the display panel, and the drawing data is drawn on the display panel 260a as shown in FIG.

  In addition, when the user who has viewed the drawing data drawn on the display panel 260a (bitmap data of a band-like region including drawing pieces having a priority of “1”), the drawn drawing data is used to draw a desired page. Assume that it is not data, and keep pressing the left direction button without releasing it. Then, a signal indicating that the left direction instruction button is pressed is continuously output from the HI device 270a, the determination in step S408 becomes “Yes”, and this calculation process is ended.

  Then, it is assumed that the page turning mode setting process is executed again by the page turning detection unit 300 (CPU 220) after the development arrangement process is completed. Then, as shown in FIG. 11, after the steps S501 to S503, in the step S506, the next page of the page being displayed is set as a new display target page, the page number is recorded, and this calculation process is finished. To do. Then, the development / placement processing is executed again by the analysis / shaping unit 310 and the drawing processing unit 320, and, as shown in FIG. 13, after the steps S601 to S607, the display driving unit 260 adds new drawing data to the display panel 260a. Drawn on.

  In addition, when the user who has viewed the drawing data drawn on the display panel 260a (bitmap data of a band-like region including drawing pieces having a priority of “1”), the drawn drawing data is used to draw a desired page. Assume that it is data, and release the left direction button to stop the pressing operation. Then, the signal indicating that the left direction instruction button is pressed from the HI device 270a is stopped, the determination in step S608 is “No”, and the display level is level 1, so the determination in step S609 is performed. Becomes “No”, the display level is set to level 2 in step S610, and in step S607, the bit of the band-like region including the drawing segment having the priority “2” in the bitmap data stored in the NVRAM 240 is stored. The map data is output to the pixel writing unit 261 (display driving unit 260). Then, the display driver 260 drives the X driver and Y driver of the display panel, and the drawing data is drawn on the display panel 260a as shown in FIG. Then, after the step S608, the determination in the step S609 becomes “Yes”, and the calculation process is terminated.

  As described above, in the information display system 1 of the present embodiment, the priority of the band-like region including the character with the largest font size of the display target page, that is, the character describing the most important matter is set high. Therefore, at the time of switching display information of the display target page, it is possible to allow the user to grasp the outline of the display target page before all the information of the display target page is displayed. Therefore, by continuously displaying each page of the content, when searching for a desired page, the user does not indicate that the display target page is not the desired page at the stage where the information of the belt-like area having a high priority is displayed. When it is determined, the switching display can be stopped and the switching display of information on the next page can be started before the switching display of the information is completed. As a result, when each page is continuously displayed, the time required for switching display of pages other than the desired page can be shortened, and the time required for displaying the desired page can be shortened.

  The analysis / shaping section 310 in FIG. 3 and step S605 in FIG. 13 constitute the acquisition means described in the claims. Similarly, the drawing processing section 320 in FIG. 3, steps S606, S607 in FIG. S609 and S610 constitute drawing means, the input control unit 270 and the HI device 270a in FIG. 3 constitute re-switching instruction means in step S608 in FIG. 13, the storage 210 in FIG. 3 constitutes storage means, and FIG. Step S202 constitutes a generation unit, and step S203 in FIG. 6 constitutes a document data transfer unit.

The information display device and the display information generation device of the present invention are not limited to the contents of the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.
In the above embodiment, an example in which the CPU 220 executes programs related to various processes stored in the program storage unit 230 has been described, but the present invention is not limited to this. For example, a dedicated logic circuit or DSP may be provided to execute a part of the program. In this way, power consumption can be reduced and the processing speed can be increased.

  In addition, an example is shown in which a pixel column extending in the horizontal direction in plan view is selected by driving with an X driver, and drawing data of the pixel column is drawn on the selected pixel column with a Y driver. It is not something that can be done. For example, the roles of the X driver and Y driver are changed, and a pixel column extending in the vertical direction in plan view is selected by driving with the Y driver, and the drawing data of the pixel column is drawn on the selected pixel column by the X driver. You may make it do. When a pixel column extending in the vertical direction in plan view is selected, a band-like region that is divided in the vertical direction is generated.

  Further, when the X driver and the Y driver can switch roles, for example, the bitmap data is divided in the horizontal direction depending on whether the information of each page of the content is horizontal writing or vertical writing. You may make it set whether to produce | generate a strip | belt-shaped area | region or the strip | belt-shaped area | region divided | segmented to a vertical direction. Specifically, when the information on the page is horizontal writing, a band-like region for dividing the bitmap data in the horizontal direction is generated, and further, the pixel row extending in the horizontal direction in the plan view is displayed by the X driver. The driving data is selected, and the drawing data of the pixel row is drawn on the selected pixel row by the Y driver. Further, when the page information is written vertically, a band-like area for dividing the bitmap data in the vertical direction is generated, and further, a pixel column extending in the vertical direction in plan view is driven by a Y driver. The drawing data of the pixel row is drawn on the selected pixel row by the X driver.

It is a perspective view which shows the external appearance of the information display system to which this invention is applied. It is a block diagram which shows the internal structure of the personal computer of FIG. It is a block diagram which shows the internal structure of the information display apparatus of FIG. It is explanatory drawing for demonstrating the data structure of document data. 6 is a flowchart illustrating a print instruction request process. It is a flowchart which shows a printing process. It is a flowchart which shows a document data generation process. It is explanatory drawing for demonstrating a band table. It is explanatory drawing for demonstrating a priority. It is explanatory drawing for demonstrating a press button detection process. It is a flowchart which shows a page turning mode setting process. It is explanatory drawing for demonstrating a document direction. It is a flowchart which shows an expansion | deployment arrangement | positioning process. It is explanatory drawing for demonstrating operation | movement of an information display apparatus.

Explanation of symbols

1 is an upper table display system, 2 is a personal computer, 3 is an information display device, 10 is a CPU, 20 is a storage, 30 is a RAM, 40 is a display, 50 is an input device, 60 is a data I / F, 100 is a printing process , 110 is a band division unit, 120 is a data transfer unit, 200 is a data I / F, 210 is a storage, 220 is a CPU, 230 is a program storage unit, 240 is a RAM, 250 is a graphic accelerator, 260 is a display drive unit, 260a is a display panel, 261 is a pixel writing unit, 270 is an input control unit, 270a is an HI device, 271 is a button press detection unit, 280 is a power supply, 300 is an analysis / shaping unit, 310 is a drawing processing unit, and 320 is page turning Detection unit

Claims (7)

An information display device for switching and displaying information on each page of content on a display,
Acquisition means for acquiring band data including information on a band-like area that divides a display area of the display in a vertical direction or a horizontal direction and information on priority of the band-like area at the time of switching display of the information on the page; An information display device comprising: a drawing unit for drawing on a display in order from the information in the band-like region having the higher priority order based on the band data obtained.   When an instruction to switch to another page is input during the switching display of the information on the page, after the display of the band-like area during the display process is finished, the switching display is stopped, The information display device according to claim 1, further comprising a re-switching instruction unit that starts switching display of information.   The information display device according to claim 1, wherein the display is a memory display body that continues to display information in a display area even when power supply is stopped.   Storage means for acquiring and storing information and band data of each page of content from an external device, the acquisition means acquires information of the display target page and band data from the storage means, and the drawing means 4. The apparatus according to claim 1, wherein, based on the acquired information of the display target page and band data, the information in the band-like area having the higher priority order is sequentially drawn on the display. The information display device described in 1.   A display information generation apparatus comprising: generation means for generating document data including information on each page of content and band data; and transmission means for transmitting the generated document data to an external apparatus.   The display information generating apparatus according to claim 5, wherein the generation unit generates the document data by setting the priority of the band-like region including the character higher as the font size of the character is larger.   6. The display information generation apparatus according to claim 5, wherein the generation unit generates document data by setting a priority order of a band-like region including the character based on character attribute information.

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