JPH06324833A - Screen scroll control system - Google Patents

Abstract

PURPOSE:To execute the scroll of a large moving amount a high speed so that a movement to a target document can be executed smoothly by measuring the depression time of a scroll key, and switching a screen image to a reduced display, when its depression time becomes the prescribed upper limit value. CONSTITUTION:A document editing processor contains a CPU 10, a keyboard 14 connected to the CPU 10 through an input/output interface 13, a timer 15, and a memory 11 and a display device 12 connected to the CPU 10. When a scroll key is depressed, the timer 15 measures the time when the scroll key is being depressed continuously by a Clock () function. A Clock value is constituted so as to has a certain upper limit value, and when it reaches the upper limit value, an image reduction flag is set in order to switch to a screen reduction mode. That is, the depression time of the scroll key is measured, and after a prescribed time elapses, that obtained by reducing an image on a display screen is subjected to scroll display. Subsequently, at the time point when the scroll key is released, it is returned to its original state that the image is not reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen scroll control system, and more particularly to a screen scroll control system in a text editing apparatus executed by a computer.

[0002]

2. Description of the Related Art In the conventional method, scrolling is performed at the same speed even if the scroll button is continuously pressed.
There is also a method of changing the scroll speed according to the pressing time when the scroll button is continuously pressed.

[0003]

In the conventional scroll control method, in the former case, it takes too much time to move a large amount while confirming the contents of the screen, and it is not possible to quickly move to a target position. There is. In the latter case, we are trying to solve this problem by changing the scroll speed. However, if the scrolling speed is faster than a certain level, the ability of the screen to move is not noticeable because it exceeds the visual recognition ability of a human moving object, and it becomes impossible to recognize which position of the document is currently displayed. Further, there is a problem that it is impossible to move while looking at a text in a wide range in response to a large movement of continuous scrolling.

An object of the present invention is to provide a screen scroll control system capable of smoothly scrolling a large amount of movement at high speed to smoothly move to a target document.

[0005]

According to a first aspect of the present invention, in a computer including a scroll key and a control device for controlling screen scrolling, a step of measuring the pressing time of the scroll key and a predetermined upper limit of the measured pressing time. And a step of switching the screen image to a reduced display when the value becomes a value, the second invention is a computer equipped with a scroll key and a control device for controlling the screen scroll, wherein the reduced display of the screen image is scrolled. The present invention is characterized by including the step of continuing during the pressing of the key and returning to the normal screen when the pressing of the scroll key is completed.

[0006]

In the first invention, the pressing time of the scroll key is measured, and when the measured pressing time reaches a predetermined upper limit value, the screen image is switched to the reduced display. In the second invention, the screen image is reduced. The display continues while the scroll key is pressed and returns to the original normal screen when the scroll key is pressed, so a large amount of text can be moved with the same screen size without increasing the scroll speed, and smooth scroll processing is possible. Can be done.

[0007]

Embodiments of the present invention will be described with reference to the drawings. Figure 1
2 is a flowchart for explaining a processing procedure (display content determination processing by CPU, scroll amount determination processing procedure by CPU) of the embodiment of the screen scroll control method of the present invention, and FIG. 2 is a document edit processing device used for the processing of this embodiment. FIG. 3 is a block diagram showing the hardware configuration of FIG. 3, FIG. 3 is a configuration diagram of software used in the processing of this embodiment, and FIG.
FIG. 5 is a diagram illustrating an example in which the screen image is reduced by 2, and FIG. 5 is a diagram illustrating an example in which the screen image is reduced by ½ in both the vertical and horizontal directions.

In FIG. 2, the document edit processing device is a CPU.
10, a keyboard 14 connected to the CPU 10 via the input / output interface 13, a timer 15, a memory 11 connected to the CPU 10, and a display device 12.

The keyboard 14 comprises scroll keys and other various keys. The CPU executes edit processing such as display content determination processing and display processing including image reduction when the display content is displayed on the display device. The CPU 10 stores various information such as a document edit processing program and an edit target document.

In FIG. 3, 16 is software used for document editing processing, 22 is keyboard processing software for detecting pressing of scroll keys and other keys,
Reference numeral 23 is a timer processing software for measuring the pressing time of the scroll key, and 19 is a scroll control (20) for determining the scroll speed or judging whether to display the screen reduction (21) according to the pressing time of the scroll key. ) Software, 17 is document image development processing software for processing the document from the scroll control 19,
Reference numeral 18 is software for screen display.

The procedure of screen scroll control will be described with reference to FIG.

In FIG. 1, a predetermined keyboard input process is performed to perform a predetermined startup process of the document editing apparatus to set a scrollable state (1-1). Then, the timer is reset and the timer starts from count 0 (the timer can obtain the elapsed time by the timer function Clock ()), that is, the Clock () function is initialized (1-2). It is checked whether the scroll key is pressed (1-3). If it is not pressed, normal document processing is performed (1-4). If the scroll key is pressed, scrolling is performed by the Clock () function. The time during which the button is kept pressed is measured (1-5). That is, Clock is clo
It is replaced with ck () and the scroll speed is set to gradually increase depending on the scroll pressing time.

The clock value is configured so as to have a certain upper limit value and no greater value. There clock
Check if the value exceeds the upper limit (1-6), and if it exceeds the upper limit, set the clock value to the upper limit (1-7). If the upper limit is reached at the same time, switch to screen reduction mode. The reduction flag is set (1-8). When the screen reduction flag is set and when the clock does not exceed the upper limit value, the scroll value corresponding to the clock value is set (1-9). Looking at the screen reduction flag, if the mode is not the screen reduction mode, the document is displayed and expanded so as to perform scrolling at a scroll speed based on the scroll value with a normal screen image (1-10, 1-12, 1-13). In the screen reduction mode, the document is reduced and the display image is expanded (1
-10, 1-11, 1-13). This process is performed until the end of the control process (1-14).

Based on FIG. 4, the screen image is vertically changed to 1
An example in which the size is reduced by 2 will be described.

Reference numeral 30 indicates the first screen, 31 indicates the next screen (second screen) following the first screen, 32 indicates a state in which the screen image is reduced in the vertical direction, and 33 indicates the scroll direction. That is, the first screen 30 and the second screen 31 are halved in the vertical direction.
When it is reduced, it becomes a screen 32. As a result, even if the scroll speed is the same, it is possible to substantially double the scroll speed.

An example in which the screen image is reduced by 1/2 in both vertical and horizontal directions will be described with reference to FIG.

Reference numeral 34 indicates the first screen, 35 indicates the next screen (second screen) following the first screen, 36 indicates a state in which the screen image is reduced in both vertical and horizontal directions, and 37 indicates the scroll direction. That is, a screen 36 is obtained by reducing the first screen 34 and the second screen 35 by 1/2 in both the vertical and horizontal directions. As a result, even if the scroll speed is the same, it is possible to substantially double the scroll speed.

In summary, when the scroll key is continuously pressed, the pressing time of the scroll key is measured, and after a predetermined time has elapsed, the reduced image of the display screen is scroll-displayed. Returns to the original unscaled state when the scroll key is released. As a result, a large amount of text can be moved with the same screen size without increasing the scrolling speed, and smooth scrolling can be performed.

It is also possible to change the scroll speed for the first predetermined time after the scroll key is pressed, and to carry out the screen image reduction method of this embodiment after the predetermined time has elapsed.

Further, the screen image may be reduced while the scroll key is being pressed, and may be returned to the state where the image is not reduced at the time when the scroll key is released.

[0021]

In the first invention, the pressing time of the scroll key is measured, and the screen image is switched to the reduced display when the measured pressing time reaches a predetermined upper limit value. In the second invention, the screen image is changed. The reduced display of is continued while the scroll key is pressed, and the screen returns to the original normal screen when the scroll key is pressed, so a large amount of text can be moved smoothly with the same screen size without increasing the scroll speed. A scroll process can be performed.

[Brief description of drawings]

FIG. 1 is a flowchart illustrating a processing procedure of an embodiment of a screen scroll control system of the present invention.

FIG. 2 is a block diagram showing a hardware configuration of a document edit processing device used for processing of this embodiment.

FIG. 3 is a configuration diagram of software used for processing of the present embodiment.

FIG. 4 is a diagram illustrating an example in which a screen image is vertically reduced by 1/2.

FIG. 5 is a diagram illustrating an example in which a screen image is reduced by ½ in both vertical and horizontal directions.

[Explanation of symbols]

 10 CPU 11 Memory 12 Display Device 13 Input / Output Interface 14 Keyboard 15 Timer

Claims (2)

[Claims] 1. A computer comprising a scroll key and a control device for controlling screen scrolling, wherein a step of measuring the pressing time of the scroll key and a screen image when the measured pressing time reaches a predetermined upper limit value. And a step of switching to a reduced display, a screen scroll control method. 2. A computer provided with a scroll key and a control device for controlling the screen scroll, wherein reduced display of a screen image is continued while the scroll key is being pressed, and the original normal screen is displayed when the scroll key is pressed. A screen scroll control method including a returning step.