JPH06202993A - Portable information display device - Google Patents

Abstract

PURPOSE:To display character information of a book, a magazine, a newspaper, etc., on a small-sized display screen in an optional narrow space and to read it selectively through easy operation by displaying a correspondent document in the unit of page once the title of information data on a memory card is selected by an operation key. CONSTITUTION:An initial setting process part 11 displays an initial screen and processes for selecting the size of display characters and plural documents are performed. A page control process part 12 performs control for selecting one of pieces of information on plural items stored on the memory card 3 and taking out and displaying a previously read page. A screen control process part 13 performs display control over the corresponding screen by switching the screen displayed with the indication of the page control process part 12 in page units according to the operation of the operation key 4. Therefore, when desired information (document) is selected by using the operation key 4, the document is displayed in page unit on the screen of a display part 2 under specified display conditions and the respective pages are displayed through key operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable information display device. Generally, printed matter made of paper is widely used as a medium for transmitting information, and the number of magazines and books in bookstores increases,
Publishing and delivery of small-volume, multi-product books requires cost and time. In addition, there are calls for protection of the world's environment and resources, restrictions on timber felling to protect forests, and restrictions on timber exports. Due to the shortage of timber, paper production will be restricted in the future. There is a risk that information distribution will be restricted, and holding information in the form of a book poses problems with the publishing cost and distribution cost of the publisher as well as the storage space of the book purchaser.

Further, in addition to print media, images and sounds such as television and radio are used as broadcast media. These can provide real-time information, but are transient. A recording device or a recording device is required to leave a record.

From these points, various information (books, magazines,
It is hoped that each individual can read the information provided by newspapers, various databases, etc.) at any time they want without using paper.

[0004]

2. Description of the Related Art In recent years, a paperless era is approaching by adopting a method of processing, holding and outputting information in the form of data using a computer as a print medium which does not use paper. In terms of print media, sentences and data recorded on printed matter are stored in a database and are being written, edited, and distributed in electronic form.

Notebooks and memos, which were handwritten media, are written on word processors and electronic memos, and letters are being transmitted by electronic mail or telephone fax. Under such circumstances, electronic publishing of newspapers, magazines, and books (in which the content of printed matter is input to a storage medium such as an optical disc for sale) in the publishing industry is expected to completely reverse the distribution form.

On the other hand, as a method of obtaining information, there is a method of obtaining a screen or a sound of a television, a radio or the like through eyes or ears. These are excellent in real time property, but they are transient and are saved. Corresponding VT to
It is necessary to record in equipment such as R and tape recorder. In this respect, in the case of a print medium, there is an advantage that the information content is stored as it is and the information can be retrieved when desired.

If a world of so-called electronic publishing that takes advantage of the characteristics of both is constructed, the desired information can be obtained instantly, and if it is desired to retain its contents, it can be stored in an electronic storage medium. Is. Currently, online database services provide business information such as market, product information, finance, securities, exchange rates, and corporate finance, as well as information on social science and humanities related areas such as newspapers, magazines, news, law, and education. It can be obtained in exchange for a fee by using a communication line such as a telephone line. However, in the case of receiving the information in the form of data regardless of voice, it is often obtained and displayed by a specific terminal connected to the line. Therefore, the user cannot see the information at any place at any time.

As a method for dealing with this, a device for selling information is provided everywhere, and information is written on a terminal or a recording medium of each individual by paying a fee, and each individual stores the recording medium. It is possible to think of a way to see it at any time depending on the device you carry. It is technically possible to realize such a device for selling information, and a method of selling a storage medium storing information at the same store as a newspaper or the like is also conceivable.

Books such as conventional magazines and books (books using characters of all genres) are stored in an electronic storage medium as data instead of being in the form of books, and are sold by individuals. It can be viewed at any time depending on the device used.

A conventional portable input / output device such as an electronic notebook can refer to a card (ROM) such as a predetermined dictionary or display the contents of a memory card for storing keyed information. However, it does not have a function of performing display control such as easily operating a document containing a large number of pages stored in a storage medium and displaying information at an arbitrary location in a desired form.

[0011]

However, conventionally, an individual carries a recording medium on which various kinds of information are recorded and carries it at any place to select information on a required page. There was no information display device that could be controlled.

Although a conventional portable device such as an electronic notebook can refer to a card (ROM) such as a predetermined dictionary or display the contents of a memory card for storing keyed information. However, it does not have a function of performing display control such as easily operating a document containing a large number of pages stored in a storage medium and displaying information at an arbitrary location in a desired form.

According to the present invention, text information of books, magazines, newspapers, etc. can be displayed on a small display screen in an arbitrarily narrow space, selected by a simple operation, displayed page by page, and sequentially read by switching pages. An object is to provide a portable information display device that can be used.

[0014]

FIG. 1 is a block diagram showing the principle of the present invention. In FIG. 1, 1 is a processing unit of a portable information display device, 2 is a display unit such as a liquid crystal that displays a large number of characters and pictures, and 3 is information (including pictures) such as magazines and books (paperback books) in advance. A stored memory card such as an IC card, 4 is an operation key composed of at least two keys, 5 is a power switch, and 6 is a reset key.

Further, in the processing unit 1, 10 is a power input processing unit for performing a process corresponding to power input, and 11 is an initial screen for displaying the size of display characters and selecting a plurality of sentences. An initialization processing unit, 12 is a page management processing unit for selecting one from a plurality of items of information stored in a memory card, and a process for fetching and displaying a previously read page, and 13 is a page management process. A screen control processing unit that switches the screen displayed by the instruction of the unit 12 in page units according to the operation of the operation key to control the display of the corresponding screen, and 14 is a termination process that performs a process for ending the display. Reference numeral 15 is a forced reset unit, 16 is a battery voltage confirmation processing unit, and 17 is an auto power-off processing unit.

In the portable information display device of the present invention, when an IC memory card in which information of a book or the like is written is attached to the device, an initial screen is displayed on the screen of the display section, and it is desired to view the display conditions and a plurality of information. When information (text) is selected using the operation keys, the text is displayed page by page on the screen of the display unit under the specified display conditions, and each page is sequentially displayed by operating the key. Also, when reading of a page in the middle of a sentence is finished, the page is saved and the same page is called again later.

[0017]

When the memory card 3 is inserted into the main body of the apparatus and mounted in the memory card mounting section (see FIG. 2 described later) and the power switch 5 is turned on, the power input processing section 10 in the processing section 1
Is started, the system is started up, the mounting state of the memory card 3 is checked, and if it is good, the initial setting processing unit 1
Start 1. The initial setting processing unit 11 is the screen control processing unit 1.
An initial message is displayed on the display unit 2 via 3. Here, when one of the operation keys 4 is operated, a screen for selecting the size of the displayed character is displayed, and the operation is performed according to the input of the operation key 4, and when the size of the displayed character is determined, that Characters are displayed in the size. When the size of the displayed character is determined, the page management processing unit 12 performs a selection including the title of the information written in the memory card 3 (the title of one or a plurality of sentences written in the memory card 3). The screen is selected and sent to the screen control processing unit 13, and the screen control processing unit 13 displays the title with characters of a predetermined size.

On the other hand, the screen control processing unit 13 is provided with a resume data holding means 130, and the screen control processing unit 13 is provided.
Displays the contents of the page of the memory card 3 for a certain period of time (assuming the user is reading the contents of the page), sets the page information (together with the title information) in the resume data holding means 130, and It functions as a "bookmark" for reading. The contents of the resume data holding unit 130 change every time pages are sequentially sent, but the contents at that time are held even when the power is turned off. When the information of the same title of the same memory card 3 is selected at the next opportunity, the page management processing unit 12 causes the screen control processing unit 13 to operate.
When it is detected that valid data is set in the resume data holding means 130, the screen control processing unit 13 is instructed to display a page using the resume data.

After the title is displayed, if valid resume data is not held in the resume data holding means 130 (or invalid data), each item of the title screen displayed on the screen of the display unit 2 is operated. Key 4
A movable cursor is displayed, and when the cursor is moved and the operation key 4 is operated to select one title, the page management processing unit 12 displays the top page (for example, the cover of the document) of the corresponding sentence. It is read out and displayed on the display unit 2.

After that, the screen control processor 13 displays the page of the table of contents when the operation key 4 for sending the page is pressed. It should be noted that one of the two operation keys has a function of displaying the next page and the other has a function of returning to the previous page in the state of displaying a sentence. If any operation key is held down, the page is fast forwarded or fast rewound.

When the power switch 5 is turned off, the termination processing section 14 turns off the power of the entire apparatus and terminates. When the battery voltage confirmation processing unit 16 detects that the battery voltage drop is below a certain level, the termination processing unit 14 is driven after issuing an alarm, and the auto power off processing unit 17 is further activated.
Is driven when it detects that no key input occurs for a certain period of time. When the reset key 6 is operated, the compulsory reset unit 15 compulsorily initializes the current state of each unit and returns it to the initial state.

[0022]

EXAMPLE FIG. 2 is an external view of a portable information display device of an example. 2 (1) is a front view, (2) is a lateral view, and (3) is a back view. Reference numeral 20 is a main body of the information display device, and the size thereof is such that it can be held by one hand. In the surface view shown in (1), 21 is an L that occupies most of the surface area of the main body 20.
It is a CD (liquid crystal display) screen, and many characters can be displayed vertically or horizontally. Reference numerals 4 to 6 (corresponding to the same reference numerals in FIG. 1) are an operation key, a power key, and a reset key, respectively. In this embodiment, the operation key 4 is 4 in this embodiment.
It is composed of two keys a and 4b. These two keys can be a seesaw type key in which when one is on, the other is off, and the action of the two keys corresponds to the display screen. Change. That is, on the screen for selecting one from a plurality of items, the operation key 4a has a function of moving the cursor indicating one of the plurality of items, and the operation key 4b selects (determines) the item at the current cursor position. ) Has the function to. Further, in the screen for displaying a sentence, the operation key 4a has a page forward (advance to the page after the current page) function, and the operation key 4b has a page return (return to the page before the current page) function. .

These keys 4 to 6 may not be arranged on the surface of the main body but may be arranged on the lateral surface of the main body as shown by the dotted line in FIG. In that case, all keys can be operated with one hand holding the main body. On the side of the main body, when using the contrast adjustment dial 22 and AC power supply,
An AC adapter connection port 23 for connecting a C adapter is arranged, and the memory card 3 is provided inside the main body 20 (LCD
A mounting portion 24 to be mounted is provided at a position on the back side of the screen 21 and 24a is a memory card insertion slot for inserting the memory card 3. In addition, the eject button 25 and the battery box 26 that are pressed when the memory card 3 is ejected
Is provided.

FIG. 3 is a hardware configuration diagram of the portable information display device of the embodiment. In FIG. 3, 30 is a central processing unit (CPU), 31 is an oscillator (OSC) that generates a clock for driving the CPU 30, 32 is a RAM for storing key input and control processing information in the device, and 33 is a CPU 3
0 is a program ROM for storing a program for controlling each part by 0, 34 is a liquid crystal display (LCD) constituting a display device, 35 is a liquid crystal display control circuit (LCDC) for controlling the liquid crystal display, Reference numeral 36 denotes a display RAM (VRA) for expanding the information data read from the internal memory and the external memory as output screen data on the display.
M) and 37 are Kanji RO with built-in font data for displaying the information read from the memory card as characters.
M and 38 are operation units (operation keys 4, power switch 5, reset key 6 and the like), 39 is an operation control unit for performing control to detect an input from the operation unit 38 and notify the CPU 30, 40 is a power supply unit, 41 Is a power supply control unit that detects the state of the power supply unit and controls the supply of power to each unit, 42 is a card unit in which a memory card (IC memory card) is mounted, and 43 is an interface control between the memory card and the bus. A card interface (IF) 44 for performing is a bus composed of a data bus, an address bus and a control line for connecting the respective circuits. In addition, the resume data indicating which page of which sentence is the page read last time is the RAM 3 described above.
Stored in 2. For this reason, the RAM 32 has a built-in power source and holds and stores data.

In the apparatus configuration of FIG. 3, based on a series of control information stored as a program, power input processing, initial setting processing (card determination processing, display character selection processing), page management processing (data selection processing) and Through the screen control process (including the resume data process), the predetermined information in the card is displayed according to the screen display image of the device.

The memory card is an IC card equipped with a backup power source, an SRAM, or a ROM without a power source.
Various memory cards can be used, such as IC cards and rewritable memory cards such as SRAM, and information (character data and picture data) received from magazines, books, newspapers and information services can be operated page by page. Written in a format that allows you to use the same card multiple times to display different information by overwriting it with different information when finished reading. It is assumed that the memory card has such a storage capacity that, for example, an ordinary paperback book can store information for several books. Although the internal information structure of the memory card may be unified in advance, a basic configuration example is shown in FIG.

FIG. 4 is a structural example of the internal information of the memory card, and (1) of FIG. 4 shows the entire structure. Management table information is stored at the head of the memory card, followed by title 1 header information. Title 1 information (data such as text) is stored, and thereafter, similarly, header information of title N and title N information are sequentially stored. As shown in (2) of FIG. 4, the management table information stores card individual information including card type and capacity, card initialization information, initialization maker information, card management information and the like. The content of each title header information is, as shown in (3) of Fig. 4, information management number, information title, data capacity and data display format (whether the text is displayed vertically or horizontally). Etc. are stored.

Display control by the information display device of the present invention is performed by the program ROM in the hardware configuration of FIG.
33, the processing operation of the CPU 30 and each control unit (L
It is executed by mutual operation with the CDC 35, the operation control unit 39, the power supply control unit 41, etc.).

Each processing unit shown in FIG. 1 (10 to 1 in FIG. 1)
5 to 14 show processing flows for realizing the function 7), and each processing flow will be described below together with the overall operation of the information display device.

FIG. 5 is a flow chart of power input processing. This processing corresponds to the function of the power input processing unit 10 in FIG. 1, and the memory card is first inserted into the card insertion slot (24 in FIG. 2) (S1 in FIG. 5) and the power switch (5 in FIG. 2) is turned on. When turned on (S2 in FIG. 5), system startup is started and the resume memory (resume data holding means 1 in FIG. 1 is started.
The CPU itself resets the memory and the registers other than those provided in the CPU 30 in FIG. 3 corresponding to the CPU 30 (S3 in FIG. 5). Next, a card detection operation is performed to determine whether or not the card is correctly inserted (S4 in the same). If the card is not correctly installed, a card installation failure message (program R
(Stored in OM33) is displayed (at step S5). An example of this display screen is designated as G1, and A. Shown in.

Further, it is determined whether or not there is a power key operation (operation to turn off) (at step S6), and if there is no operation, control of automatic power off (waiting for a fixed time and power off) is performed (at step S7).
When the power key is operated, power off is controlled (S
8).

FIG. 6 is a memory card attribute confirmation processing flow in the initial setting processing. The process of FIG. 6 is a part of the function of the initial setting processing unit 11 of FIG. 1, and in FIG. 5 it can be seen that the card is correctly inserted.
Then, the initialization process is started, and here it is determined whether or not the memory card is a valid card that can be handled by this information display device. First, an initial message is displayed (S1 in FIG. 6). An example of this displayed screen is shown in FIG. Shown in. Next, check the card attribute information (S
2). This attribute confirmation is based on the internal information of the memory card (Fig. 4
(1)), and in this example, it is determined whether the e-book card attribute is set (S in FIG. 6).
3). The electronic book card attribute is a card that stores information such as newspapers, magazines, and books used in the information display device of the present invention, and this discrimination is performed in order to distinguish it from other purpose memory cards. . If it is not the attribute of the computerized book card, a card failure message is output (at step S4),
Processing similar to S6 to S7 in FIG. 5 (S5 to S in FIG. 6)
7) is performed. An example of the defective message displayed in this case is shown in FIG. Shown in.

FIG. 7 is a processing flow for determining display characters in the initial setting processing. This processing is also a part of the function of the initial setting processing unit 11 in FIG. In FIG. 6, when the electronic book card attribute is confirmed, when the page feed key (one operation key 4a of the operation keys 4 in FIG. 2) is operated (S8 in FIG. 7), the character display selection screen is displayed. Is displayed (the same S
9). A display example of this screen is shown in FIG. Shown in. In this example, it looks like "a lot can be seen" and "looks good", but the former means that the displayed characters are smaller and many characters are displayed on one screen, and the latter is larger and the displayed characters are one screen. Means to display less characters in
In one of the upper parts of these two messages, in this example, a cursor (displayed by ■, not displayed by □) is displayed above "looks neat", and the user turns the page feed key (operation key 4a in FIG. 2). The cursor can be moved by pressing), and the decision can be instructed by operating the page return key (operation key 4b in FIG. 2).

When the character display selection screen is displayed, a key input waiting state is entered (S10 in FIG. 7), and D.
When the operation key is entered in the state of
1) When it is found that the page return key (4b in FIG. 2) is input, the selection of a 24-dot font which is a large character is decided (S12 in FIG. 7). Page feed key (4a in Figure 2)
In the case of input of, the screen for selecting a 16-dot font, which is a small character, is displayed (the cursor is in a moving state), and the key input is waited for (S13 in FIG. 7). After that, the input is identified (S14 in the same figure), and if the key input for page turning is identified, S1
4, when the processing of S15 is performed and the input of the page return key is identified, the selection of the 16-dot font is determined (S16).
A title selection screen is displayed (at step S17).

A display example of this title selection screen is shown in FIG. Shown in. Also on this screen, it is possible to select fonts, return to the previous page (in this case, do nothing), and send to the next page.

FIG. 8 is a page management processing flow, and FIG. 9 is a data selection processing flow in the page management processing. The processing of FIG. 8 corresponds to the function of the page management processing unit 12 of FIG. This is executed subsequent to the display of the title selection screen shown in FIG. 7, and the data selection processing is performed first (FIG. 8).
S1).

The details of this data selection process are shown in FIG. 9, which will be described below. In the title selection screen (1st page of the table of contents) as shown in, titles of a plurality of information (such as novels) stored in the memory card are displayed, and pages (entire page is BBBB, current page) are displayed in the service area at the top of the screen. Page is displayed as AAAA) and a selection message "Please select" is displayed (S100 in FIG. 9). Also, the title selection screen is divided into multiple pages if one page is not enough, so if you want to see the titles of other pages, click "Previous page" or "Next page".
The selection items of are displayed. In this display state, a key input waiting state is entered (at step S101), and it is determined whether or not there is a cursor return (page return key 4b is pressed) by the operation key (at step S102). In case of cursor return, the current cursor is displayed. The existing title is determined to have been selected (at step S103).

If the cursor is not returned, it is judged whether the cursor is returned by the operation key 4b when the cursor is positioned on "To the previous page" or "To the next page" on the display screen.
104), if applicable, display the selection screen of the previous page or the next page and move the cursor over the first title (at step S105). If there is no cursor return, the cursor is moved to the head title on the display screen (at step S106), the process returns to step S102 and the subsequent processing is repeated until the selected title is determined.

When the title is determined in the data selection processing flow of FIG. 9, the processing of step S1 of FIG. 8 is executed, and the information (text) of the selected title is checked for the copy protection function and its validity is checked. ((S in Fig. 8
2) If it is determined that the document is defective, a message indicating a document defect (illegal) is displayed in the service area (upper part of the screen) (S3 in FIG. 8). For example, the message "This sentence cannot be read" is displayed in the service area.

After that, the process returns to the data selection process to select another title. If appropriate, the resume information (held by the CPU 20) is valid (not an invalid page number)
If it is valid, the resume data (stored in the storage area with power supply of the RAM 32 managed by the CPU 30 in FIG. 3) is extracted (S8), and the text of the title included in the data is extracted. While displaying the number of pages in the page (at step S9), the stored information of the page is displayed on the screen (at step S10). Then, the screen control process (FIG. 10) is performed. If the resume data is not valid in S4, the title (cover) of the selected item is displayed (S5). After that, when the page feed key is pressed (at step S6), the next second page, that is, the table of contents is displayed (at step S7), and the screen control processing is started. A screen example of the title display at this time is shown in FIG. , And a screen example of the table of contents display is shown in FIG. Shown in.

FIG. 10 is a processing flow of screen control. In FIG. 8, the resume data is retrieved (S in FIG. 8).
8) and when the selected title is displayed, the process waits for page feed / return input in step S1 of FIG. 10 (page feed is the operation key 4a,
To return the page, press the operation key 4b).

When there is an input, the fast forward / fast rewind state (the key is continuously pressed for 1 second or longer) is detected (see FIG. 10).
S2), after detection (after 1 second or more has elapsed), whether fast forward / return is detected or not detected, it is determined whether the key input is page feed or page return (S3 of the same). ). The page counter is incremented by -1 or -1 depending on whether the result of this determination is page feed or page return (at steps S4 and S5).

In the case of page feed, it is determined whether the last page has been reached (S6 in the same step), and in the case of page return, it is determined whether page 1 has been reached (S7).
Based on the detection result in step S8, the fast-forward / return state is checked (step S8).
Return to 3 and repeat the same operation. When it is not in the fast-forward / return state, or when page 1 is reached by page return, the resume function is executed and the resume data is updated (S.
9). In this case, the selected title and the numerical value of the page are stored as resume data. Next, page display (screen service area) is performed (at step S10), and information of the corresponding page (memory card) is displayed on the screen (at step S1).
1).

In the page feed, when the last page is reached (S6), it is judged whether the page feed key is returned (S11).
12) When it returns, it returns to the title selection screen (S1)
3), the process returns to the data selection process of S1 of FIG. 8 (FIG. 9).

C. of FIG. Shows an example of a screen for displaying a table of contents on the next page (second page) of the title screen. Further, after that, a display example of the screen on the page of the text is displayed in A. , Ibid. Shown in. Each of these is a display of a vertically written sentence, which is shown in FIG. Is the D. of FIG. This is a display example in the case where “looks good” (24-dot font) is selected on the character display selection screen in FIG. Similarly, is a display example when "See a lot" (16-dot font) is selected on the character display selection screen. When the page feed key (operation key 4a) is pressed in this state, the text of the next page is displayed, and the page return key (operation key 4a
Press b) to display the text of the previous page.

FIG. 11 shows the processing flow of each of the other functions. A. of FIG. Is a flow of the end processing (corresponding to 14 in FIG. 1), the power switch (5 in FIG. 2) is turned off, the signal generated by the auto power off processing, and the voltage drop detection is continued for a certain time by the battery voltage confirmation processing. After that, it starts up by the signal etc. generated and turns off the power of each part including the display. B. of FIG. Is a forced reset processing flow (corresponding to 15 in FIG. 1), in which the memory key is initialized by the reset key (6 in FIG. 2) and the initialization processing (see FIGS. 6 and 7) is started. In addition, C.I. Is a flow of battery voltage confirmation processing (corresponding to 16 in FIG. 1),
When a voltage drop signal (a flag is set) occurs, a message (for example, a mark indicating a battery) instructing battery replacement is displayed on a part of the screen, and the display is turned off after a certain period of time.

FIG. 12 is a processing flow of auto power off. When the input waiting state continues for a certain time (two minutes in this example) in the processing shown in the figure, the end processing (A. in FIG. 11) is started.

13 to 15 are examples (1) to (3) of screens displayed in each state by the information display device.
Is. A. of FIG. Is the screen of the message about improper card installation, B. Is the screen of the initial screen message, C.I. Screen of bad message, D. Is a display character selection screen.

In FIG. 14, A. Is the title selection screen,
B. Is the title screen, C.I. Is a table of contents display screen. Also, in FIG. Vertical display image when 24 dot font is selected, B. Is a vertical writing display image when a 16-dot font is selected. It goes without saying that these sentences can be displayed horizontally (the title is also displayed) according to the header information (see FIG. 3) of the memory card.

A display device using a liquid crystal display (LCD) is
If you occupy most of the surface area of the information display device as shown in (1) of Fig. 2 and arrange each key and switch on the lateral surface of the device (shown by the dotted line in (2) of Fig. 2). Can be larger.

FIG. 16 shows a configuration example of a display device having different screen capacities. The example is a 240 x 320 dot configuration,
With a 16-dot font, 15 x 20 if the entire screen is used
The number of characters can be displayed, and it is 10 x 13 in a 24-dot font.
Can be displayed. B. Is a 640 x 480 dot configuration, and if the entire screen is used, it is 4 in a 16 dot font.
Can display 0x30 characters, 2 in 24 dot font
6x20 characters can be displayed.

FIG. 17 shows a recording format of information on the memory card. Storing character data of a sentence in each storage position indicated by a dot in the figure, even if a line feed mark occurs,
After that, the beginning of the next line is continuously stored. As a result, the character data is stored efficiently, and in the screen display processing, the number of characters that can be displayed on one screen is extracted according to the size (font) of the displayed characters, and arranged so that a line feed is made only with line feed mark data. And display it. For large characters (24-dot font), the number of characters in a sentence that can be displayed on one screen is the number of pages (number of screens) required to display the entire text, compared to small characters (16-dot font)
Will increase. Further, in displaying each sentence, the number of pages is displayed in the service area in the format of AAAA / BBBB, but the page display corresponding to the screen size of each display device and the font of the displayed characters is performed. Therefore, in the case of a large character, a sentence that is originally contained in one page when a small character is displayed is divided and displayed on a plurality of display screens, in which case the entire page and the display page are changed.

[0053]

According to the present invention, by mounting a memory card storing various information, it is possible to realize an information display device which is portable and which can be held and operated with one hand by one hand. Also, when various types of character data and picture data such as newspapers, magazines, and paperback books (books) are stored in the memory card, you can select the required item (title) by a simple operation and select the desired page among them. By selecting and displaying and switching pages, books with a large amount of text can be displayed and read at any place.

As a result, it is possible to read business information necessary for work, various reports, specialized books, etc., and read various books as a hobby. In this case, you do not need to have printed magazines, books, etc., and you can hold a small information display device with one hand, so you can use it in any place (for example, on a commuter train) as long as there is a small space. You can

The information of the memory card used in the present invention is
The information can be obtained by recording the information on a rewritable IC memory card at a sales terminal (or a selling point), or by selling the IC memory card itself on which the information is recorded. When newspapers, magazines, general books, etc. are distributed in such a form, they can be displayed and read by the portable information display device according to the present invention, and it is possible to realize paperless printing.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is an external view of a portable information display device according to an embodiment.

FIG. 3 is a hardware configuration diagram of the portable information display device according to the embodiment.

FIG. 4 is a configuration example of internal information of a memory card.

FIG. 5 is a flow chart of power input processing.

FIG. 6 is a flow chart of an attribute confirmation processing flow of the memory card in the initial setting processing.

FIG. 7 is a processing flow for determining a display character in the initial setting processing.

FIG. 8 is a processing flow of page management.

FIG. 9 is a flowchart of a data selection process in the page management process.

FIG. 10 is a processing flow of screen control.

FIG. 11 shows a processing flow of other functions.

FIG. 12 is a processing flow of auto power off.

FIG. 13 is an example (part 1) of a screen displayed in each state by the information display device.

FIG. 14 is an example (part 2) of a screen displayed in each state by the information display device.

FIG. 15 is an example (part 3) of a screen displayed in each state by the information display device.

FIG. 16 is a configuration example of display devices having different screen capacities.

FIG. 17 is a recording format of information on a memory card.

[Explanation of symbols]

1 Processing unit (CPU and memory) of portable information display device 2 Display unit such as liquid crystal 3 Memory card 4 Operation key 5 Power switch 6 Reset key 10 Power input processing unit 11 Initial setting processing unit 12 Page management processing unit 13 Screen control Processing unit 14 Termination processing unit 15 Forced reset unit 16 Battery voltage confirmation processing unit 17 Auto power off processing unit

Claims (6)

[Claims] 1. In a portable information display device comprising a display unit for displaying a large number of characters and pictures, an operation key and a processing unit for controlling each unit, the operation key moves the cursor on a selection display screen of the display unit. And a function for selecting one of the displayed plural items, and at least two keys having a function of sending or returning a page on the information data display screen, and a sentence corresponding to one to a plurality of titles Is equipped with a memory card mounting portion to which a memory card in which the information data that composes is written in a predetermined format is exchangeably mounted, and the memory card is mounted to the memory card mounting portion, and the screen displayed when the power is turned on is displayed. On the other hand, when the title of the information data of the memory card is selected with the operation key, the corresponding sentence is displayed in page units, and the display page is operated by operating the operation key. A portable information display device, characterized in that the display can be switched. 2. The processing unit according to claim 1, wherein the processing unit checks a power supply state, a power input processing unit, an initial setting processing unit for displaying an initial screen and selecting display characters, and information data written in a memory card. The page management processing unit that displays the selection screen including each title and displays the text of the corresponding information data when one title is selected from the selection screen, and for each displayed page screen A portable information display device comprising: a screen control processing unit that displays the content of a corresponding page in response to an input of page forward or page return by an operation key. 3. The portable information according to claim 2, wherein the initial setting processing unit detects a mounted state of the memory card and confirms attributes of the memory card, and displays a corresponding message if defective. Display device. 4. The initial setting processing unit according to claim 2 or 3, wherein a screen for selecting the size of the display character is displayed, and thereafter, in response to an input for selecting the size of the display character from the operation key. The portable information display device is characterized in that the information data of the memory card is controlled to be displayed according to the size of the selected display character. 5. The resume data holding according to claim 2, wherein the screen control processing unit displays the information data of each title page by page, and stores the data representing the page when the display is finished on the way page. When one title is selected from the selection screen, the page management processing unit checks the data in the resume data holding means, and determines that valid data is stored in the resume data holding means. A portable information display device characterized by displaying information data of a page. 6. The page management processing unit and the screen control processing unit according to claim 2, when displaying a page of information data in a selected title, the page management processing unit and screen control processing unit A portable information display device characterized by displaying whether it is a page.