JPH03252698A - Display control device - Google Patents

Abstract

PURPOSE:To shorten a picture rewriting time by setting up a division mode for scrolling only a set area in a display screen and scrolling a partial display screen by using the division mode. CONSTITUTION:When a decision means 3 decides that a cursor moving destination based upon a cursor moving key 2b may exceed the display screen of a display device 1a at the time of edition or the like of a formed document when the division mode is specified by a specifying means 2a, a display control means 1b scrolls only the previously specified area in accordance with a cursor moving display. If the cursor moving destination is the outside of the displayed screen, only the previously specified area can be scrolled in accordance with the movement of the cursor. Since only the required area on the screen can be scrolled, the rewriting time can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display control device in a document creation device such as a word processor, and particularly relates to shortening the rewriting time of a display screen.

[Summary of the Invention] A display control device of the present invention is included in a document creation device and is used to edit a created document. In other words, when editing, etc., if the desired document is outside the display screen, specify an area (for example, a line), separate it from other documents, and move the cursor within that area. By moving the document, only that area can be scrolled and the desired document can be quickly displayed.

[Prior Art] In conventional document creation devices, when editing a created document, a cursor on the screen of a display device is moved to a desired character, and then the desired editing work is performed.

When moving the cursor, if there is a desired character outside the display screen, that is, the destination of the cursor, the entire display screen will scroll when the cursor is moved, and this scrolling will continue until the desired character is reached. I can continue.

For example, when the cursor is moved further to the right from the right end of the display screen, the entire display is shifted one column to the right. Further, when the cursor is located at the bottom of the display screen, if an operation is performed to move it further downward, the entire display is shifted downward by one line.

[Invention or problem to be solved] However, as the cursor moves as described above, the speed of the cursor moving within the display screen is scrolled across the entire display screen, and the speed of the cursor suddenly slows down from the point at which scrolling starts. . This problem is particularly noticeable when the cursor moves in parallel to the right or left.

This is because the entire display screen is scrolled as the cursor moves, which adds time to rewrite the entire screen.

It is clear that the rewriting time can be shortened by scrolling only the desired area on the screen.

An object of the present invention is to enable a desired area to be scrolled in conjunction with a cursor movement operation.

[Means to solve the problem] The means of the present invention are as follows.

1) Specifying means 2a for specifying a division mode in which only a desired predetermined area is scrolled within the display screen of the display device 1a (see the first functional block diagram; the same applies hereinafter);
s For example, when moving the cursor to scroll the display screen, you can specify "split mode" to scroll only a predetermined area of the display screen, as opposed to the "full mode" in which the entire display screen is normally scrolled. This is a keyboard for

2) A determining means 3 for determining whether or not a destination of a cursor to be moved and displayed on the display screen of the display device]a is on the display screen based on the operation of the cursor movement key 2b, e.g. , a CPU that determines whether the destination of the cursor is on the displayed screen or outside the screen.

3) When the splitting mode is specified by the specifying means 2a and the determining means 3 determines that the destination of the cursor is not within the display screen, only a predetermined area including the cursor position is scrolled. a display control means 1b for displaying a movement destination of the cursor within the display screen;

For example, in "split mode", when the CPU determines that the cursor is in an area outside the display screen, it scrolls only a pre-specified area (for example, a line) and displays it on the display screen. be.

[Action Co. The operation of the means of the invention is as follows.

When the split mode is specified by the specifying means 2a, the display control means 1b determines that the cursor movement destination by the cursor movement key 2b is beyond the display screen of the display device 1a when editing a created document, etc. If it is determined by means 3, only the pre-specified area is scrolled in conjunction with the cursor movement display.

Therefore, when the destination of the cursor is outside the displayed display screen, only a prespecified area can be scrolled as the cursor moves.

[Example] Hereinafter, an example will be described in detail with reference to FIGS. 2 to 4.

FIG. 2 is a block diagram showing a configuration example of a document creation device to which the display control device of the embodiment is applied.

That is, this document creation device has an input section 4. Processing section (C
PU)5. Storage section 61 display output section 7. Printer output section 8
It is made up of etc.

The input unit 4 for inputting data specifying an area (or line) on the display screen includes a keyboard 4a and a keyboard control unit 4b.
and transmits input signals to the CPU 5. Although not shown, the keyboard 4a includes cursor movement keys for moving the cursor up, down, left and right, a mode selection key for switching between the whole mode and the split mode as described later, and scrolling of a specified area in the split mode. After the specified area is scrolled, a return key is provided for displaying the specified area in accordance with the scrolled area.

Further, the storage unit 6 is composed of a ROM 6a in which an operation system (O8) program and the like are stored, and a RAM 6b in which document data and the like are stored.
Connect to PU5.

Here, the area to be scrolled is set in the ROM 6a by specifying the overall mode in which the entire display screen is scrolled, the number of previous lines (XI) which is the start line of scrolling, and the number of subsequent lines (X2) which is the end line of scrolling. A division processing program for a division mode is stored. Further, the RAM 6b stores the specified number of previous lines X1 and the specified number of subsequent lines X2.

The document data processed by the CPU 5 is
A M 7a and CR
It is displayed on a display device 7c such as T or printed by the printer control section 8a and printer 8b of the printer output section 8.

FIGS. 3(a) to 3(d) show the display states of the display screen.

That is, the state shown in FIG. 3A shows an initial state, and for example, characters of 5 rows and XIO digits are displayed on the display device 7c. The state shown in FIG. 3(b) is in the overall mode in which the entire display screen is scrolled, and from FIG.
This shows a state in which the entire display screen is scrolled one line each time the cursor 7d is moved one character in the horizontal direction.

In the state shown in FIG. 6(C), in the aforementioned split mode, when the cursor 7d is moved horizontally to the right when the third line of the display has been designated as the area to be scrolled, only this line will be scrolled. This shows a state in which "K" is displayed at the end of the line.

The state shown in (d) in the same figure is that after moving the cursor 7d horizontally from the state shown in (C) in the same figure until "Z" is displayed at the end of the line, press the return key to move the display screen to "Z" at the end of the line. The entire image is shown scrolled.

Next, the operation in the split mode will be explained using the flowchart shown in FIG.

That is, the whole mode or the divided mode is selected using the mode switching key of the keyboard 4a (step Sl). When the split mode is selected here (step S2), the area to be scrolled is set by inputting the number of previous lines (XI) that will be the start line of scrolling and the number of subsequent lines (X2) that will be the end line (step S3). . As a result, RAM6 a
The values of the number of rows XI and X2 are set in .

Next, it is determined whether the direction in which the cursor 7d is to be moved is horizontal movement to the left or right (step S4). If it is a horizontal movement to the left or right (in the case of YES), the process proceeds to the next step S5, and if it is not a horizontal movement (in the case of NO), the process proceeds to step s8, which will be described later.

In the next step S5, it is determined whether or not the destination of the cursor 7a is outside the display screen 7d, depending on the key force used to move the cursor on the keyboard 4a. If it is outside the display screen (Yes), the process goes to step Sll, which will be described later. If it is inside the display screen (No), the cursor is moved to the desired character and displayed (Step S6).

After the cursor is moved, it is determined whether the return key on the keyboard 4a has been pressed (step S7). Display screen 4
If the cursor is moved within, there is no need to return.

If the display screen is not restored (No), then it is determined whether or not an editing operation has been performed (step S8). If you do not want to edit it here (No), return to step S4. When an editing operation for data such as a document on the display screen is performed (high), the CPU creates editing data in accordance with the operation and stores it in the RAM 6b.

Each is transferred to the VRAM 7a (step S9).

Next, it is determined whether the cursor movement destination to which the cursor 7d should be displayed at this point has gone outside the display screen (step 510). If the cursor 7d is within both display surfaces, the process returns to step S6 to move the cursor, and the cursor 7d is displayed at the destination. If it is outside the display screen, then it is determined whether the currently selected mode is the split mode (step 511).

0 When the mode is not divided (No), that is, when the whole mode is selected, all the data to be displayed according to the movement destination are transferred from the RAM 6b to the VRAM 7a and displayed (step 512), and then the step Returning to S6, the cursor 7d is displayed.

In addition, in the split mode (high), the preset number of lines XI, X2 is read out from the RAM 6b, and the cursor 7
Assuming that the row with d is the X row, from X-X1st row, X1X2
Scroll display is performed by transferring only the data on the row from the RAM 6b to the VRAM 7a. (Step 813
). After that, the process returns to step S6 and the cursor 7d is
By displaying , a display as shown in FIG. 3(C) is created. If it is determined in the next step S7 that the return key on the keyboard 4a has been pressed, the process proceeds to step S12, where characters outside the designated area are moved and displayed as shown in FIG. 3(d).

In this embodiment, the cursor 7d is moved left and right, but the cursor 7d is not limited to this and may be moved up and down. Furthermore, although the areas to be scrolled are "rows", they may also be areas g and h set on the display screen 9 as shown in FIG. 51. In the setting areas g and h, the number of lines and the number of digits are set, and the display screen in these areas can be scrolled by moving the cursor left/right or up/down. Furthermore, the keyboard 4a does not need to be provided with a mode selection key; for example, the mode selection key may be used as one selection item for formatting.

Therefore, by scrolling a limited area as opposed to scrolling the entire display screen, the time required to rewrite the screen can be shortened. In particular, when moving the cursor 7d left and right, the time can be significantly reduced.

[Effects of the Invention] According to the present invention, there is provided an entire mode in which the entire display screen is scrolled, and a split mode in which only a set area within the display screen is scrolled, and a part of the display screen is scrolled using this split mode. By doing so, the time required to rewrite the screen is shortened, which in turn significantly reduces the time spent on editing work.

2

[Brief explanation of drawings]

FIG. 1 is a functional block diagram of the present invention, FIG. 2 is a block diagram showing an example of the configuration of a document creation device, and FIGS. 3(a) to (d)
4 is a flowchart for explaining the operation of scrolling the display screen, and FIG. 5 is a diagram showing other setting areas on the display screen. 1a...Display device, 1b...Display control means, 2a...
... Specifying means, 2b... Cursor movement key 3...
Discrimination means, 4... Input section, 4a... Keyboard, 4
b...Keyboard control unit, 5...Processing unit (CPU)
, 6...Storage unit, 6a...ROM, 6b...RA
M, 7...Display output section, 7a...VRAM, 7b.
...Display control unit, 7C...Display device (CRT), 7
d...Cursor, 8...Printer output section, 8a...
-Printer control unit, 8b...Printer.

Claims (1)

[Scope of Claims] Specifying means for specifying a division code for scrolling and displaying only a desired preset area within a display screen of a display device; a determining means for determining whether or not a destination of a cursor to be moved and displayed is within the display screen; and the determining means specifies the split mode, and the determining means determines whether the destination of the cursor is within the display screen. and display control means for scrolling and displaying only the predetermined area including the cursor position and displaying a destination of the cursor within the display screen when it is determined that the cursor is not within the screen. Characteristic display control device.