JPH06124181A - Data processor and data display device - Google Patents

Abstract

PURPOSE:To reduce the energy consumption of the device, to make the device compact and portable and to effectively utilize a lot of softwares used for a compact computer coming into wide use at present. CONSTITUTION:A data processing means A performs the processing of data. A display data storage means B receives display data to be simultaneously displayed on the display screen of the conventional compact computer from the data processing means and stores them. When a display selection key D is operated, a display control means E performs control so as to transfer the prescribed selected display data from the display data storage means to a display means C and to display them.

Description

Detailed Description of the Invention

[0001]

This invention relates to a small computer,
A small data processing device such as a personal computer,
And a data display device for reading and displaying data on a recording medium such as a floppy disk.

[0002]

2. Description of the Related Art Small data processing devices such as small computers, personal computers, and word processors (hereinafter referred to as small computers) that are widely used at present have a sufficient number of characters to be displayed on the display screen. Made, the screen resolution is CRT
As the display or the liquid crystal display, it is known that the number of dots in the vertical and horizontal directions is 400 × 640 or 480 × 640 to 768 × 1024. A large number of software such as spreadsheets, word processors, and data bases, which are designed to be displayed on a display screen of such a size, are used in data processing devices.

On the other hand, there is known a small data display device capable of reading out document information stored page by page in a recording medium such as a compact disc by turning a page of a book and viewing it through a display. ing.

[0004]

By the way, the former small-sized data processing device has a large display screen suitable for use as a desk top on a desk, but there is a demand to carry it freely as a portable device. The current situation is that it is a little too big. This is because the size of the display screen alone is about 15 cm × 20 cm or more, which is slightly larger than the size when the case is included, which exceeds the limit that can be easily carried in a pocket or bag. Further, when the display screen is large as in the conventional case, the battery consumes only a large amount of power and can withstand only a short period of use, and is not suitable for portable use.

By the way, if the pitch between dots is made small without changing the number of dots on the display screen, the whole screen can be made small. However, in this case, since the display contents are the same without any change, the displayed characters become small, which makes it difficult to read. Therefore, it is difficult to use the software developed for the conventional desk top computer or word processor in a portable device. For this reason, an "electronic notebook" that is about the size of a notebook that fits in a pocket has been developed.

However, this "electronic notebook" is configured to be displayed on a screen smaller than the display screen of a small computer by using dedicated software. For this reason, the software developed for small computers, which has been widely used in the past, cannot be directly used in the electronic notebook.

On the other hand, the recording medium used in the latter data display device can be used only in a dedicated data display device,
There is no playback compatibility with conventional small computers,
The solution was desired.

Therefore, an object of the present invention is to reduce the power consumption, reduce the size, and make it portable, and to utilize a large amount of software used in currently popular small computers.

Still another object of the present invention is to make the reproduction of the recording medium compatible with the currently popular small-sized computers and to utilize the recording medium.

[0010]

In order to achieve the above object, the present invention has the following constitution.

The first invention comprises a data processing means for processing data, and a display means for displaying display data on the display screen, which comprises a display screen having a size which is an integer fraction of the display screen of a conventional small computer. A display data storage means for receiving and storing display data to be displayed on the display screen of the conventional small-sized computer at a time from the data processing means, and display data stored in the display data storage means on the display means. A display selection key for selecting a predetermined display data which is an integral fraction and a selected predetermined display data is transferred from the display data storage means to the display means when the display selection key is operated. And display control means for controlling the display.

A second aspect of the present invention is a data reading means for reading display data from a recording medium which stores display data for each page by dividing the display data for each page, and 1 / integer of the display screen of a conventional small computer. Display means for displaying one page of the display data of the recording medium on the display screen, and display data for an integer page to be displayed at once on the display screen of a conventional small computer. Display data storage means, a page instruction key for instructing the previous page or the next page, and when the previous or next page is instructed by the page instruction key, it is stored in the display data storage means in accordance with the instruction. A predetermined page of the display data is controlled to be transferred to the display means for display, or the data reading means reads the display data of the recording medium to display the display data. Of the predetermined After transferring to 憶 means 1
Display control means for controlling to display the page by transferring it to the display means.

[0013]

According to the first aspect of the invention, the data processing means processes the data. The display data storage means receives the display data to be displayed on the display screen of the conventional small computer at one time from the data processing means and stores it. Then, when the display selection key is operated, the display control means controls so that the selected predetermined display data is transferred from the display data storage means to the display means and displayed.

As described above, according to the first aspect of the present invention, the size of the display screen of the display means is reduced to a fraction of the display screen of the conventional small-sized computer, while the capacity of the display data storage means remains unchanged. Then, by operating the display selection key,
Only a predetermined integer fraction of the display data stored in the display data storage means is transferred to the display means and is divided and displayed on the display screen.

Therefore, in the first aspect of the invention, the display screen can be made smaller than that of the conventional data processing apparatus, so that it is possible to realize low power consumption, downsizing, and portability of the entire apparatus.
Moreover, in the first invention, even if the display screen is made small, compatibility with the display operation of the conventional small-sized computer is provided, so that the conventional software can be effectively utilized.

On the other hand, in the second invention, when the previous page or the next page is instructed by the page instructing key, the display control means responds to the instruction by a predetermined one page of the display data of the display data storage means. Control to display by transferring to
Alternatively, the data reading means reads the display data of the recording medium and transfers it to the display data storage means, and then transfers the display data of a predetermined one page to the display means for display.

As described above, according to the second aspect of the present invention, the size of the display screen of the display means is reduced to an integer fraction of the display screen of the conventional small computer, while the capacity of the display data storage means is kept as it is. Then, by operating the page instruction key, only one page out of the integer pages of the display data stored in the display data storage means is read out and displayed on the display screen of the display means.

Therefore, in the apparatus of the second invention, the display data of the recording medium can be displayed in page units, while in the conventional small computer, the display data of the same recording medium can be displayed in integer page units. Therefore, the recording medium can be made compatible with both the device of the second aspect of the invention and the conventional small-sized computer, so that the recording medium can be effectively used.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the first invention will be described with reference to the drawings.

FIG. 3 is an external view of an embodiment of the first invention. In this embodiment, the case 2 is a display device 2 which is a display means.
And has a keyboard 3 as an input means. The size of the display screen of the display unit 2 is set to be an integer fraction of the display screen of the display unit used in the conventional small computer, and for example, a liquid crystal display or the like is suitable. Here, the size of the display screen of the display unit 2 is 1/2 of the display screen of the display unit used in the conventional small computer.
The size of. Here, the above-mentioned integer division of the display screen is not limited to the case where it is exactly an integer division, and is intended to prevent the display contents from being difficult to see when they are divided and displayed as described below. , Including those enlarged by the margin.

On the front surface of the case 1, as will be described later, a pair of left and right display selection keys 4 for selecting display contents displayed on the display screen of the display 2 are arranged. This display selection key 4
Is the right half selection instruction key 4A and the left half selection instruction key 4
It consists of B and.

Next, the structure of the electrical system of the embodiment having such an external structure will be described with reference to the block diagram of FIG.

In FIG. 4, reference numeral 5 denotes a CPU (central processing unit) similar to that mounted on a conventional small-sized computer, and performs control processing of each unit as described later. This CPU5
The above-mentioned keyboard 3, the display selection key 4, and the RAM (random access memory) 7 for temporarily storing data are connected to the computer via the bus 6. Also, CPU5
Includes a VRAM (random display for display, which is used for displaying one screen of a display of a conventional small computer.
VRAM which divided access memory) into two in left and right areas
8A and VRAM 8B are connected via a bus 6. The VRAM 8A is a writing area for displaying the left half of the conventional display screen, and the VRAM 8B is a writing area for displaying the right half of the conventional display screen.

Further, the VRAM 8A and the VRAM 8B are connected to the VRAM 9 which receives the display data from one of them and stores the contents thereof. Also,
The display data of the VRAM 9 is transferred to the display device 2 in synchronization with the refresh time of the display device 2 and displayed on the display screen.

Next, an operation example of the embodiment thus configured will be described with reference to the flowchart of FIG.

Now, it is assumed that the CPU 5 is performing a predetermined arithmetic processing such as calculation by a conventional program. At this time, when the display selection key 4 is pressed, the CPU 5 temporarily interrupts the arithmetic processing being performed at that time by the interrupt control and performs the following display control.

First, the key input is the right half selection instruction key 4
It is determined whether it is A or the left half selection instruction key 4B (S1).
As a result, when it is determined that the input is from the right half selection instruction key 4A, the left / right display selection flag stored in the area of the RAM 7 is set to "1" (S2). On the other hand, when it is determined that the input is from the left half selection display key 4B, the RAM 7
The left / right display selection flag stored in the area is set to "0" (S3).

When the flag is "1", VR
The display data stored in the AM 8B is read into the VRAM 9, and the display data in the VRAM 9 is transferred to the display 2 in synchronization with the refresh time of the display 2 and displayed on the display screen (S4, S6). . On the other hand, when the flag is "0", the display data stored in the VRAM 8A is read to the VRAM 9, and the display data of this VRAM 9 is transferred to the display 2 in synchronization with the refresh time of the display 2 and displayed. Displayed on the screen (S5, S
6).

The display screen of the display device 2 may be completely switched as described above, but the screen is gradually scrolled to the left or the right while the display selection key 4 is pressed. It may be configured to do so.

Further, in the above example, VRAM 8A and VR
AM8B is provided, and the contents of any of these are stored in the VRAM9.
However, the VRAM 9 may be omitted and the display data may be directly transferred from the VRAM 8A or VRAM 8B to the display 2. In this case, the VRAM 8A and the VRAM 8B are one VRAM when viewed from the display 2 side, and the display start address simply changes depending on the value of the left / right display selection flag.

Next, another embodiment of the first invention will be described with reference to FIG.

As in the case of FIG. 1, this embodiment comprises a display 12, a keyboard 3 and the like housed in a case 11. However, in order to further reduce the size of the entire device, the size of the display screen of the display unit 12 is set to 1/4 of the display screen of the display unit used in the conventional small computer. Along with this, in order to select the display content of 1/4 of one screen displayed on the display of the conventional small computer, the display selection key 14 composed of four keys is used for the case 1
It is provided in front of 1. Further, in this embodiment, the VRAM for display used in the conventional small-sized computer is 4 units.
The display data is divided, and one of the four divided display data is selected by operating the display selection key 14, and the selected content is divided and displayed on the display unit 12.

As described above, in the two embodiments of the first invention, the program used in the conventional small-sized computer can operate in the same manner as the conventional one, and the display selection key 4 or the display selection key 14 is operated. Only when this occurs, the CPU 5 is interrupted and the display selection flag in the RAM 7 is rewritten. Therefore, also in the apparatus of the embodiment, the word processor software, the spreadsheet software, etc. used in the conventional small-sized computer can be utilized as in the conventional case.

By the way, in spreadsheet software, it is common to check the calculation result by moving the position of the cell of interest with the cursor keys of the keyboard 3 up, down, left and right. In such a case, if the cursor key moves to the left or right or upper and lower end portions of the screen and the cursor key is further pressed, it is treated as if the display selection key 4 was pressed, and the CPU 5 is interrupted. It is possible to automatically switch the display screens by multiplying. As a result, the user can obtain the display of the contents of the desired place without pressing the display selection key 4 one by one.

Next, an embodiment of the second invention will be described below with reference to the drawings.

FIG. 7 is an external view of this embodiment, in which a case 22 accommodates a display 22. The size of the display screen of the display unit 22 is set to be an integer fraction of the display screen of the display unit used in the conventional small computer, and for example, a liquid crystal display or the like is suitable. Here, the size of the display screen of the display unit 22 is half the size of the display screen of the display unit used in the conventional small computer. Here, the above-mentioned integer division of the display screen is not limited to the case where it is exactly an integer division, and is intended to prevent the display contents from being difficult to see when they are divided and displayed as described below. , Including those enlarged by the margin.

On the front surface of the case 21, the next page key 23A,
The previous page key 23B and the table of contents key 23C are arranged. The next page key 23A is used to instruct the display content of the display screen of the display 22 to be the next page. The previous page key 23B is used to instruct the display contents of the display screen of the display 22 to return to the previous page. Further contents key 23C
Is an instruction to display a table of contents of information stored in a recording medium described later.

A data reading section 25 for reading the contents of the recording medium 24 when the recording medium 24 is inserted is provided in the case 21. The recording medium 24 is composed of an IC card, a floppy disk, a compact disk, etc., and stores display data such as a book having several hundred pages or more by dividing it into pages. The storage unit is a unit that can be displayed on the display screen of the display 22 at one time.

Next, the structure of the electric system of the embodiment having such an external structure will be described with reference to the block diagram of FIG.

In FIG. 8, reference numeral 30 denotes a CPU (central processing unit) for performing control processing of each unit as will be described later.
The next page key 23A, which is described above, is transmitted to the PU 30 via the bus 31.
Previous page key 23B, table of contents key 23C, data reading section 2
5, and RAM (random access memory) 32
Connect. The CPU 30 has a VR which is used for displaying one screen of the display of a conventional small computer.
A VRAM 33A and a VRAM 33B obtained by dividing AM (random access memory for display) into two areas on the left and right sides,
Connect via bus 31. The VRAM 33A is a writing area for displaying the left half of the conventional display screen, and the VRAM 33B is a writing area for displaying the right half of the conventional display screen.

Further, VRAM 33A and VRAM 33B
Is connected to a VRAM 34 which receives display data from any one of them and stores the contents thereof. The display data of the VRAM 34 is transferred to the display 22 in synchronization with the refresh time of the display 22 and displayed on the display screen.

Next, an operation example of the embodiment thus constructed will be described with reference to the flowchart of FIG.

In general, regardless of whether the book is right-open or left-open, when a page is turned by hand, the page that a human starts to read is an even page, so that the display operation shown in the following flowchart is performed. I did it.

Now, when the page "N" is displayed on the display screen of the display 22, if a key input is accepted (S
11), it is determined whether the key is the next page key 23A or the previous page key 23B (S12, S13). As a result, next page key 2
If the key input is 3A, 1 is added to N, while if the key input is the previous page key 23B, 1 is subtracted from N (S14, S
15).

Next, it is judged whether N is an even number (S1).
6). As a result, when N is an even number, the display data for two pages stored in the RAM 32 is stored in the corresponding VRAM3.
After transfer to 3A and VRAM 33B (S17),
The display data of the VRAM 33B is read to the VRAM 34 and displayed on the display screen of the display 22 (S18). On the other hand, when N is an odd number, the display data of the VRAM 33A is read into the VRAM 34 and displayed on the display screen of the display 22 (S19).

As described above, in this embodiment, the recording medium 2
Data of newspaper articles, novels, comics, etc. stored in 4
Display 22 to turn pages of a book by key operation
Can be displayed page by page on the display screen.

Further, in this embodiment, the size of the display screen of the display unit 22 is set to 1/2 of the display screen of the display unit used in the conventional small computer, and the contents of the recording medium 24 are set in units of one page. Since the display is made by, the display screen of the display of the conventional small computer can be displayed in units of two pages. Therefore, the user of the storage medium 24 can view the contents of the storage medium 24 in two-page units by using a small computer on the desk, while the data display device of the embodiment can be used in one-page units. The contents of the storage medium 24 can be viewed. As a result, the storage medium 24 can be used by either the apparatus of the embodiment or the conventional small-sized computer and is compatible, so that the user base can be expanded.

In the embodiment of the present invention described above,
Although the device in which the screen of the display of the conventional small-sized computer is multiplied by an integer is described, the device may be replaced by a device in which the size of the display screen is increased by an integer.

[0049]

As described above, according to the first aspect of the invention, the size of the display screen of the display means is reduced to an integer fraction of the display screen of the conventional small computer, while the capacity of the display data storage means remains the same. And Then, by operating the display selection key, only a predetermined integer fraction of the display data stored in the display data storage means is transferred to the display means and is divided and displayed on the display screen.

Therefore, in the first aspect of the invention, the display screen can be made smaller than that of the conventional data processing apparatus, so that it is possible to realize low power consumption, downsizing and portability of the entire apparatus.
Moreover, in the first invention, even if the display screen is made small, compatibility with the display operation of the conventional small-sized computer is provided, so that the conventional software can be effectively utilized.

Further, in the second invention, the size of the display screen of the display means is set to be an integral fraction of the display screen of the conventional small computer, while the capacity of the display data storage means is kept as it is. Then, by operating the page instruction key, only one page out of the integer pages of the display data stored in the display data storage means is read out and displayed on the display screen of the display means.

Therefore, in the apparatus of the second invention, the display data of the recording medium can be displayed in page units, while in the conventional small computer, the display data of the same recording medium can be displayed in integer page units. Therefore, the recording medium can be made compatible with both the device of the second aspect of the invention and the conventional small-sized computer, so that the recording medium can be effectively used.

[Brief description of drawings]

FIG. 1 is a functional block diagram of a first invention.

FIG. 2 is a functional block diagram of a second invention.

FIG. 3 is an external view of an embodiment of the first invention.

FIG. 4 is a block diagram of the embodiment.

FIG. 5 is a flowchart showing an operation example of the embodiment.

FIG. 6 is an external view of another embodiment of the first invention.

FIG. 7 is an external view of an embodiment of the second invention.

FIG. 8 is a block diagram of the embodiment.

FIG. 9 is a flowchart showing an operation example of the embodiment.

[Explanation of symbols]

2,22 Display 4 Display selection key 5,30 CPU 8A, 8B VRAM (random access memory for display) 23A Next page key 23B Previous page key 24 Recording medium 25 Data reading section 33A, 33B VRAM

Claims (2)

[Claims] 1. A data processing means for processing data, and a display means for displaying display data on the display screen, which comprises a display screen having a size of an integer fraction of a display screen of a conventional small computer. Display data storage means for receiving and storing display data to be displayed on a display screen of a conventional small computer at one time from the data processing means, and an integer to be displayed on the display means among the display data stored in the display data storage means. A display selection key for selecting predetermined display data of one-half, and when the display selection key is operated, the selected predetermined display data is transferred from the display data storage means to the display means and displayed. A data processing device comprising: a display control unit for controlling the above. 2. A data reading means for reading display data from a recording medium which stores display data for each page by dividing the display data for each page, and has a size of an integral fraction of a display screen of a conventional small computer. A display means for displaying one page of display data of the recording medium on the display screen, and a display data storage means for storing display data of an integer page displayed at a time on the display screen of a conventional small computer. A page instruction key for instructing the previous page or the next page, and among the display data stored in the display data storage means in response to the instruction when the previous page or the next page is instructed. The predetermined one page is controlled to be transferred to the display means for display, or the data reading means reads the display data of the recording medium and transfers it to the display data storage means. Then, a data display device comprising: display control means for controlling so that the predetermined one page is transferred to the display means and displayed.