JPH02311945A - On-line screen display system - Google Patents

Abstract

PURPOSE:To collectively perform the maintenance of screen file at a host side by preparing plural control blocks containing a screen area and a screen area using state area respectively and designating and displaying the screen name stored in the screen area when the screen is displayed via a host. CONSTITUTION:A screen data store text T1 is a text for storing the screen data in the screen areas A3 and A4 and includes a command field C1, a screen name field D1, and a screen data field D2. The field D1 stores the name of the screen of the field D2, and a screen call text T2 consists of a command field C2 and a screen name field D3. The field D3 stores the name of the screen displayed by the text, and a screen display text T3 consists of a command field C3 and a screen data field D4. As a result, the maintenance including the change of screens, etc., can be facilitated despite a large number of terminals connected to a host 1.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an online screen display method.

[Conventional technology]

Traditionally, one of the screen display methods in online systems is
Store the fixed portion of the display screen in advance as a file 7 in an external storage device such as a fixed magnetic disk or floppy disk, give each screen a name, and when displaying the screen from the host, superimpose the screen name and screen. When the terminal receives this variable data, it reads the screen specified by the screen name from the file, displays it, and then displays it over the screen that displayed the variable data from the host. There was a method.

[Problem to be solved by the invention]

In the conventional online screen display method described above, a fixed portion of the screen to be displayed must be stored in advance in a file on a fixed magnetic disk or floppy disk of each terminal. Therefore, if there are many terminals connected to the host, maintenance such as changing the screen becomes extremely difficult.

[Means to solve the problem]

The online screen display method of the present invention stores, in the main memory of the terminal, a screen area that stores the results of expanding the screen display data sent from the host into a format that can be displayed on the screen, and a name given to this screen. A screen name area and a screen area usage status area for indicating when this screen area has been accessed or whether it is an unused area are set as one control block. Screen data storage text that is intended to be stored in the screen area as received text, screen display text that is intended to be displayed directly on the screen without being stored in the screen area, and screen name area text. It has screen call text for the purpose of checking the contents, checking whether there is a screen with the same name, and if so, displaying the contents of that screen area on the screen, and storing the image data from the host. When text is received, the screen area usage status area is checked to see if the screen area is unused, and if it is unused, the screen data stored in this screen area is analyzed and the text can be displayed on the screen. The expanded results are stored in the screen area usage status area, and the date and daily rate when the screen was stored is stored in the screen area usage status area. On the other hand, if there is no unused area, the screen area usage status area is checked to find the screen area in which the oldest date and time are stored, and the data is stored in this screen area in the same manner as described above.

upon receiving the screen call text from the host;
Checks the screen name area to see if the specified screen name is already stored in the screen area. If there is no screen, returns a negative response to K. If a screen is found, displays the contents stored in the screen area. and returns an affirmative response to the host, and at the same time stores the date and time in the screen area usage status area. When the screen display text is received from the host, it has means for displaying it directly on the screen.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a system configuration diagram of an embodiment of the present invention, in which a host system 1 and a plurality of terminal control devices rf1t2 are connected by a line. The terminal control device 2 controls communication with the host system 1 and display on the display device 3 . Figure 2 (a
), (b) are control blocks Bl, B2 for storing screen data received from the host.

Bn and a video RAM area A5 that stores display data for display on the display device 3; these areas are provided on the memory within the terminal control device 2. The screen area usage status area A1 in each control block contains information on whether screen data is stored in screen area (code section) A3 and screen area (attribute beat section) A4, and the date and time when the drawing screen area was last accessed. is stored.

Screen name area A2 is screen area (code part) A3 and screen area (attribute part) A4 in the control block.
Stores the name of the screen stored in . Screen area (
Code part) A3 is an area that stores only the code part to be displayed on the screen as a result of developing the screen data received from the host.

The screen area (attribute section) A4 is an area where screen data received from the host is expanded and attributes such as ruled lines and color specifications to be displayed on the screen are stored.

Video RAM area A5 is an area where the contents to be displayed on the melon display device f3 are stored. Video RAM area (
Code part) A6 is displayed on the display device 3. This is the area where the contents of the code are stored. The video RAM area (attribute section) A7 is an area in which attributes such as ruled lines and color specifications to be displayed on the display device 3 are stored.

Figure 3 (ω, (b), (C) is a diagram of the structure of the text sent by the host, and the screen data storage text) Tl is the screen area (code part) A3 and the screen area (attribute part) A4. This is text for storing data, command field C1, screen name field D1
and screen data field D2. The command field C1 stores a command indicating that this text is screen data storage text (TI). The screen name field DIK stores the name of the screen in the screen data field D2. The screen data field D2 stores screen data to be stored as this text. The screen call text) Tz consists of a command field C2 and a screen name field D3. A command indicating that this text is a screen call text is stored in the command field C2. The screen name field D3 stores the name of the screen to be displayed using this text. The screen display text) Ts is composed of a command field C3 and a screen data field D4. Command field C3
stores a command indicating that the main text is screen display text)Ts. The screen data field D4 stores screen data to be developed directly on the screen in the video RAM area A5.

FIG. 4 is a chart of operation 70. In step SI, a text from the host is received, and the process moves to step S2. In step S2, the command field of the received text is checked to determine the text format. As a result, if the received text is a screen data storage text, the process moves to step S3, if it is a screen call text, the process moves to step S8, and if it is a screen display text, the process moves to step S12. In step 3, it is checked whether the date and time are stored in the screen area usage status area A1 from the first control block B1 to the nth control block Bn, and if the date and time are not stored, is determined to be an empty area, and if the date and time are stored in all control blocks, proceed to step S5.
It is determined that there is no vacant area, and the process moves to step S4. In step S4, the control block with the oldest date and time stored in the screen area usage state area AIK is found from the first control block B1 to the nth control block Bn. In step S5, the contents of the screen name field D1 in the received text are stored in the screen name area A2 of the control block found in step S3 or step S4 (hereinafter referred to as the corresponding control block). In step S6, the screen data field D2 in the received text is
The screen data is analyzed and the results are stored in the screen area (code section) A3 and screen area (attribute section) A4 of the corresponding control block. Next, in step S7, the current date and time are stored in the screen area usage state area AI of the corresponding control block.

Next, the process returns to step S1 to receive the text again.

In step S8, the received screen call text)T2
It is checked whether the screen name specified in the screen name field D3 in the screen name field D3 is in the first control block B1 to the nth control block Bn, and if it is, the process goes to step S9. If so, the process moves to step 811. In step S9, the screen area (
The code section) A3 and screen area (attribute beat section) A4 are stored in the video RAM area (code section) A6 and video RAM area (attribute section) A7, respectively, and displayed on the display device 3, and the process moves to step SIO.

In step 810, an acknowledgment is returned to the host NC;
Return to step S1. In step 811, a negative response is returned to host)K, and the process returns to step S1. Step S1
2, the screen data field D4 in the received screen display text) T3 is analyzed, and the video RAM area (code part) A6 and video RAM area (attribute part) are
Expand to A7 and display directly on screen. Then step S
Return to 1.

〔Effect of the invention〕

As explained above, the present invention stores a screen area in the main memory of a terminal that stores the result of expanding the screen display data sent from the host into a format that can be displayed on the screen, and a name given to this screen. The screen name area and the screen area usage status area for indicating when this screen area was accessed or whether it is an unused area are set as one control block. By specifying and displaying the screen name stored in the screen area when displaying, the screen display response is improved by reducing the number of transmission blocks, and screen file maintenance can be performed all at once on the host side. be.

(Brief explanation of the drawings Figure 1 is a system configuration diagram of the present invention, and Figure 2 is a system configuration diagram of the present invention.
Control block inside the terminal device and video R for screen display
FIG. 3 is a diagram showing the structure of the AM area, FIG. 3 is a diagram showing the structure of the text sent by the host, and FIG. 4 is an operation flowchart.

1... Host system, 2... Terminal control device, 3... Display device, Bl... First control block, B2... ...Second control block, B3...Nth control block, AI...Screen area usage status area, A2...
-...Screen name area, A3...Screen area (code part), A4...Screen area (attribute part), A5...Video RAM area, A
6...Video RAM area (code section), A7
・・・・・・Video RAM area (attribute section)
T1...Screen data storage text, T2...
...Screen call text, T3...Screen display text, C1°...Command field, C
2...Command field, C3...
Command field, Dl...Screen name field, B2...Screen data field, B3...
...Screen name field, B4...Screen data field.

Claims (1)

[Claims] In the screen display method from the host to the terminal in an online system, there is a screen area in the main memory of the terminal that stores the result of expanding the screen display data sent from the host into a format that can be displayed on the screen, and a screen area attached to this screen. A screen name area for storing a name and a screen area usage status area for indicating when this screen area was accessed or whether it is an unused area are set as one control block, and there are multiple control blocks. The text received from the host includes a screen data storage text intended to be stored in the screen area, a screen display text intended to be directly overlaid on the screen without being stored in the screen area, and the above text. When checking the contents of the screen name area and checking whether or not there is a screen with the same name, the screen call text that is intended to display the contents of that screen area on the screen, and the host When receiving the screen data storage text, refer to the screen area usage status area to determine whether or not the screen area is unused, and if the screen area is unused, analyze the screen data storage text received in this screen area; It stores the results expanded into a format that can be displayed on the screen, and also stores the date and time when the screen was stored in the screen area usage status area.On the other hand, if there is no unused area, the screen area usage status area is checked and the most Find the screen area where the old date/time is stored,
Store it in this screen area in the same way as above, and when the screen call text is received from the host, check the screen name area to see if the specified screen name is already stored in the screen area, and if there is no screen. , returns a negative response to the host, displays the contents stored in the screen area on the screen when there is a screen, returns an affirmative response to the host, and at the same time stores the date and time in the screen area usage status area, and When receiving said screen display text from
An online screen display method characterized by overlapping display directly on the screen.