JPH0443588B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] The present invention relates to the control of a character display device, in which a set of screen information including a two-dimensional input/output area is divided into several groups, and these groups are arbitrarily divided into groups. A screen control system configured so that data input/output and cursor control can be performed naturally and easily without screen buffering by connecting to the console to control cursor movement and reflecting screen information directly to the console. It is a device.

[Industrial application field]

The present invention relates to control of a character display screen in a data processing apparatus connected to a terminal connection device consisting of a character display device (hereinafter also referred to as a character display) and a keyboard (hereinafter also referred to as a keyboard).

[Conventional technology]

In conventional character display screen control, cursor movement is controlled by having cursor movement rule information for a unique input code and the current cursor position for each screen, and input is performed using only one screen. A method was used in which a buffer area was prepared, input data was reflected there, and information written in the input area defined on that screen was retrieved by inputting the return key, etc. .

[Problem that the invention seeks to solve]

In the conventional screen control method described above, since a screen buffer is interposed between the terminal device and the data processing device, data input/output processing and cursor movement control are extremely complicated. Since it requires a large area, there is a problem that the amount of hardware increases.

SUMMARY OF THE INVENTION In view of the above conventional problems, it is an object of the present invention to provide a screen control device that can easily and naturally control data input/output and cursor movement without screen buffering.

[Means for solving problems]

According to the present invention, this object is achieved in a data processing apparatus connected to a terminal device consisting of a character display and a keyboard, as described in the claims.
It identifies the code input from the keyboard and sends a screen control code (escape sequence) unique to the character display device corresponding to the code to the terminal device,
A device configured to control display on a character display device, which defines means for holding screen control code information of the character display device and cursor movement from among codes (delimiters) input from a keyboard. means for selecting the code that has been selected and further determining its type such as the direction of movement; information for specifying the output screen area of the two-dimensional range on the character display device; screen output data; and the input screen area of the two-dimensional range. Screen information formed by collecting a plurality of sets of one screen information each consisting of a plurality of pieces of unit screen information each having information specifying information and an area for holding screen input data;
A chain structure is stored in which multiple unit screen information in the screen information is divided into arbitrary groups and connected in an arbitrary order in each group, and data including a cursor is moved within and between the above groups based on this. This is achieved by a screen control device characterized in that it is equipped with a means for controlling the screen so as to control the screen.

〔Example〕

FIG. 1 is a block diagram of one embodiment of the present invention, in which 1 is a character display, 2 is a keyboard, 3 is a data processing device, 4 is screen information, 5 is a screen control code, and 6 is a cursor position calculation unit. , 7 represents a screen information editing section, and 8 represents a delimiter determining section.

In FIG. 1, a data processing device 3 to which a terminal consisting of a display 1 and a keyboard 2 is connected holds screen information 4 and screen control code (escape sequence) information 5.

Screen information is formed by collecting a plurality of pieces of one-screen information that form one screen. Furthermore, one screen information is made up of a set of unit screen information consisting of the content and location of output data to the terminal, the location of collecting input data from the terminal, and a holding area for the input data content.

An example of the above-mentioned one-screen information is shown in FIG. As shown in the figure, the unit screen information 9 ₁ to 9 _o has attributes for displaying characters (normal, underline, reversed, etc.) in addition to the position and content of input/output data.

As shown in Figure 3, the output area is an area on the display determined by the output start position (x _ps , y _ps ) and output stop position (x _pe , y _pe ), and the output data is The contents are displayed. In the figure, 10 represents a display, and 11 represents an output area.

In addition, as shown in Figure 4, the input area includes input start position (x _is , y _is ) and input stop position (x _ie , y _ie ).
Given the area on the display determined by
Data input from the keyboard is displayed in this area and stored in the input data holding area. In the figure, 10 represents a display, and 12 represents an input area.

Unit screen information forming one screen information is divided into several chains. What is Chain?
Unit screen information is divided into arbitrary groups, and each group is cyclically connected in an arbitrary order.

An example of a chain of unit screen information is shown in FIG.
In the figure, 13 represents a chain, 14 represents unit screen information, 15 represents an output area, and 16 represents an input area.

By storing and controlling the chain structure of all one-screen information in the cursor position calculation unit 6 provided in the data processing device 3, data input including cursor movement can be performed naturally.

In other words, the input of the "up arrow" and "down arrow" cursor movement keys is controlled to move to the previous or next unit screen information or input start position in the chain.

In addition, by defining a number cyclically for each chain, when the cursor is at the upper left or lower right edge of the input area, the input of the cursor movement keys "left arrow" and "right arrow" , the cursor is controlled to move to the input start position of the unit screen information having the same number as the unit screen information where the cursor is currently located in the next chain.

The data output and input mechanism will be described below.

When the display 1 finishes displaying the current screen, the screen information editing section 7 extracts one-screen information indicating the contents of the next screen from the screen information 4, and displays the output data at the designated position on the display 1.
At this time, a necessary screen control code (escape sequence) is extracted from the screen control code information 5 and added. When the display of output data for one screen is completed, the cursor is returned to the input start position of the first unit screen information of the first chain and waits for input.

The data inputted from the keyboard 2 is discriminated character by character by a delimiter discrimination section and processed for each code.

When the return key is pressed, the process of path A, that is, extracts the input data from all the input data holding areas of the one screen information of the currently displayed screen in screen information 4, and converts it to true. The input data is given to the data processing unit as input data.

When the cursor movement key is pressed, path B processing is performed. That is, as described above, each cursor movement key is used to move the cursor within and between chains.

When any other key is pressed, path C processing is performed. Each data is stored by the screen information editing unit 7 in a designated input holding area of the currently displayed single screen information in the screen information 4,
Reflect it on Display 1.

Note that by defining cursor control keys such as function keys in addition to cursor movement keys and registering them in the cursor position calculation section, it becomes possible to move the cursor within any chain or between chains.

〔Effect of the invention〕

As described in detail above, according to the present invention, when inputting and outputting data on a terminal device, input and output can be performed in pseudo-screen units without requiring a screen buffer area. By arbitrarily determining the chain structure, there is an advantage that the cursor movement can be freely controlled.

Furthermore, since input/output data is held in a compressed form, memory can be saved, and this is particularly useful for interactive data processing devices that support large-capacity screens.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG.
The figure shows an example of one-screen information, FIG. 3 shows an example of an output area, and FIG. 4 shows an example of an input area.
FIG. 5 is a diagram showing an example of a chain of unit screen information. 1...Character display, 2...Keyboard, 3...Data processing device, 4...Screen information,
5... Screen control code information, 6... Cursor position calculation section, 7... Screen information editing section, 8... Delimiter discrimination section, 9 ₁ to 9 _o ... Unit screen information, 10... Display, 11... Output area, 12...Input area, 13...Chain, 14...Unit screen information,
15...Output area, 16...Input area.

Claims (1)

[Scope of Claims] 1. In a data processing device connected to a terminal device consisting of a character display device and a keyboard, a screen control code unique to the character display device corresponding to the code that has been identified from the keyboard is transmitted to the terminal. A device configured to control the display on the character display device by sending the information to the character display device, the device comprising means for holding screen control code information of the character display device; A means for selecting a code that defines movement and further determining the type of movement such as the direction, information specifying an output screen area of a two-dimensional range on a character display device, screen output data, and a means for determining the type of movement such as the direction of movement. Screen information formed by collecting a plurality of sets of one screen information, each of which is made up of a plurality of pieces of unit screen information each having information specifying an input screen area and an area for holding screen input data; and within the one screen information. A chain structure is stored in which a plurality of unit screen information is divided into arbitrary groups and connected in an arbitrary order in each group, and data including a cursor is controlled to be moved within and between the groups based on this chain structure. What is claimed is: 1. A screen control device characterized by comprising means for: