JPS63104128A - Storing system for screen format of terminal equipment - Google Patents

Abstract

PURPOSE:To realize display of an optional screen image without detectiorating the availability of a large capacity memory, by securing an area of variable length to store the screen format data on single screen. CONSTITUTION:A screen format data storing means 11 sets the pointer value showing the head position of a first storing area 31 to a pointer 21 of a control record 2 after the screen format data of a screen number '1' to be stored in a large capacity memory 14 is applied from a host computer 7. Then the format data of the screen number '1' is set at the position where said pointer is set. When storage of the data is through, an end code 41 is written. Then a screen number '1' to be displayed on a display device 15 is received from the computer 7 via a communication circuit 8. The number 'i' is received by a terminal equipment 1 and the data obtained from the head position indicated by a pointer 2i of the code 2 stored in the memory 14 through display of the following first end code are read by a reading means 12 as the data of the number '1' and delivered to a screen format data display means 13. Thus a screen image corresponding to the screen format data of the number '1' is displayed on the screen of the device 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for storing screen format data in a terminal device that is connected to a host computer via a communication line and transmits and receives data.

[Conventional technology]

7. Installed in the terminal device. : In order to display a screen with content on a display device such as a CRT, in addition to display character data that specifies the characters to be displayed on one screen, the terminal must also provide character attribute data that specifies attributes such as the color and brightness of each character. must be given to the device. Screen format data consisting of such display character data and character attribute data can be given from the host computer to the terminal device via a communication line when each screen is displayed, but in that case, each screen There is a problem in that screen format data must be sent and received between the host computer and the terminal device for each display, and display takes time.

Therefore, in the past, screen format data for each screen was stored in a large-capacity storage device such as a magnetic disk device of the terminal device in correspondence with screen identification data such as the screen number, and the screen switching of the display device was performed as a host. A system has been proposed in which this can be done simply by transmitting and receiving screen identification data from a computer.

FIG. 3 is an explanatory diagram of the conventional screen format data storage method adopted in the above-mentioned system, in which a control record 5 is provided at the beginning of the data storage area E allocated in the mass storage device, and Divide the remaining area into predetermined sizes, for example 3 bytes, and divide each area into 6 bytes.
．． ~6m each is used as a screen format data storage area for one screen. Note that the pointers 51 to 5m in the control record 5 are screen numbers rlJ, respectively.
Area 6 where screen format data of ~rmJ is stored
This indicates the leading position of 1 to 6 m, and a fixed value is set in advance.

[Problem that the invention seeks to solve]

By the way, in the conventional screen format data storage method described above, the areas 61 to 611 for storing screen format data for one screen are fixed to, for example, 3 bytes, so the screen image that can be created on one screen is as follows. 3
The disadvantage is that the screen format data is limited to the amount that can be accommodated in bytes. These drawbacks can be resolved by increasing the size of each area 6I to 6m, but this will increase the unused space in the area that stores a small amount of screen format data, reducing the efficiency of using the mass storage device. There are drawbacks.

The present invention solves these conventional drawbacks, and its purpose is to reduce the usage efficiency of mass storage devices by making the area for storing screen format data per screen a variable length area. The purpose of the present invention is to enable the display of any screen image without any screen image.

[Means for solving problems]

In order to achieve the above object, the present invention includes a storage means for storing screen format data to be displayed on a display device in a mass storage device, a reading means for reading the screen format data stored in the mass storage device; 7) A terminal device that is connected to a host computer via a communication line and transmits and receives data, the terminal device comprising a screen formerer 7) data read by the reading device and a display device for displaying the data on the display device, and connected to a host computer via a communication line to send and receive data. Regarding the screen format data to be stored in the storage device, there is no restriction on the size of the screen format data in units of one screen, and the storage means stores the screen format data for one screen to be stored in the mass storage device. When given, the screen format data is stored from the beginning of an empty 9N area of the data storage area in the mass storage device, and an end code is written at the end, and the reading means reads 1 with the end code as a delimiter. The screen is configured to read screen format data of the screen.

[Effect]

Since there is no limit to the size of each screen format data stored in the mass storage device, the screen image can be any size, and the reading means is used when the screen format data is stored by the storage means. The end of each screen format data can be recognized by the end code written last.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, in which 1 is a terminal device, 7 is a host computer, and both are connected by a communication line 8 so that they can mutually send and receive data. The terminal device 1 includes a screen format data storage means 11, a screen format data reading means 12, a screen format data display means 13, a mass storage device 14 such as a magnetic disk device, and a display device 15 such as a CRT. is included.

FIG. 2 shows an example of the contents of the data storage area E of the mass storage device 14, where 2 is a control record, 2I to 2n are pointers,
31 to 3n are 9H areas each storing screen format data for one screen; 4. ~4n is the termination code.

In FIG. 1, screen format data storage means 11
When the screen format data to be stored in the mass storage device 14 is given from the host computer 7 via the communication line 8 or from the input device (not shown) of the terminal bag ffl, the screen format data is stored in the following process. is stored in the mass storage device 14.

First, when the screen format data of screen number "1" is given, the pointer 21 of the control record 2 in FIG. 2 is assigned to the first storage area 3. Set a pointer value indicating the starting position of
Starting from that position, screen format data for screen number "1" is stored. When the storage of the ia data of the screen format data is completed, the end code 4I is written at the end as shown in FIG.
When the screen format data of 4. is given, the end code 4. A pointer value indicating the next position is set, the screen format data of screen number "2" is stored starting from the position indicated by this pointer value, and an end code 4□ is written at the end. The above-mentioned operations are performed only for the necessary screen format data.

When a screen number riJ to be displayed on the display device 15 is sent from the host computer 7 via the communication line 8, the screen number “i” is the terminal device i! 1 and passed to the screen format data reading means 12. When the screen format data reading means 12 receives the screen number "i", the screen format data reading means 12 receives the screen number "i" pointed to by the pointer 25 in the control record 2 in the mass storage device The data from the beginning position to the appearance of the next first end code is read as screen format data of screen number "i" and is passed to the screen format data display means 13.

The screen format data display means 13 controls displaying a screen image corresponding to the screen format data on the screen of the display device 15, and thereby displays the screen format data of the screen number “i” on the screen of the display device 15. The corresponding screen image will be displayed.

〔Effect of the invention〕

As explained above, when storing screen format data in a large capacity storage device of a terminal device, the present invention: ■ makes the area used for each screen variable instead of fixing it, and after ML of the screen format data; By writing an end code, it is possible to separate one screen's worth of screen format data during reading, and since there is no limit to the maximum size of screen format data for one screen, it is possible to create any screen image. This has the effect of increasing the usage efficiency of the area within the mass storage device.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a diagram showing the storage state of screen format data in the data storage area of the mass storage device 14, and FIG. 3 is a conventional screen format data storage method. FIG. In the figure, 1... terminal device, 2, 5... control record, 2I to 2n, 5. ~5II+...pointer, 3
I~3n, 6. ~6II+...Screen format data storage area, 4I~4n...End code, 7...Host computer, 8...Communication line, 11...Screen format data storage means, 12...Screen format Data reading means, 13... Screen format data display means, 14... Mass storage device, 15... Display device, E... Data storage area.

Claims (1)

[Scope of Claims] Storage means for storing screen format data to be displayed on a display device in a mass storage device, reading means for reading screen format data stored in the mass storage device, and reading means for reading screen format data by the reading means. display means for displaying the screen format data stored in the mass storage device, and is connected to a host computer via a communication line and transmits and receives data; , there is no restriction on the size of the screen format data in units of one screen, and when the storage means is given the screen format data for one screen to be stored in the mass storage device, the storage means stores the screen format data in the screen format data. The data is stored from the beginning of a free area of a data storage area in the mass storage device, and an end code is written at the end, and the reading means reads out one screen of screen format data using the end code as a delimiter. A screen format data storage method in a terminal device, characterized in that it is configured as follows.