JPS6317490A - Screen scrolling for crt screen - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a screen scrolling method on a CRT screen that facilitates operations such as selection and modification of various image data by screen operations on the CRT screen.

(Prior Art) Fig. 4 is a flowchart showing a conventional method of scrolling an image displayed on a CRT screen, and IS to 6S are steps for executing this method on a microcomputer. The step of waiting for key human power, 2S is the step of determining whether the scroll key is selected, 3S is the step of determining whether the scroll is for one line or one screen, and 4S is for updating the screen output pointer by one line. 5S is the step of updating one screen, and 6 is the step of displaying the screen.

Next, we will explain how to scroll the screen according to each step. 6 Now, the screen is waiting for key input (Step I
S) If there is some kind of key power, and if this is a key power that instructs scrolling (Step 2S), then the scroll key power specifies scrolling of one line or one screen. It is determined whether scrolling is specified (step 3S). Then, in accordance with the instruction to scroll by one line or one screen, respectively, the screen output pointer is updated by one line or one screen (Steps 4S and 5S), and the screen is displayed on the CRT according to each pointer. 6S), it is possible to modify, change, or compare characters, figures, etc. in an image and other images following this image. The display contents of the image displayed line by line and screen by screen in this way are as shown in FIG. 5, for example.

[Problem that the invention seeks to solve]

The conventional screen scrolling method is structured as described above, so it is necessary to edit or change images by line or screen many times while comparing characters between images separated by one screen or more. There were problems such as the need to scroll repeatedly, and the trouble of repeatedly performing keyboard operations for this purpose.

This invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an image scrolling method that can facilitate the processing of images shot over one screen by appropriately scrolling 172 on the screen. With the goal.

[Means for solving problems]

In the screen scrolling method for a CRT screen according to the present invention, a key operation for 1/2 screen scrolling is determined by a scroll key determining means, a secondary pointer is created or updated according to the determination result, and according to this secondary pointer, 1/2 screen scrolling is performed.

[Effect]

In this invention, the 1/2 screen scroll instruction is determined within a program routine, selects and displays the part to be displayed, 1. For example, erases the lower half of the currently selected screen, and erases the lower half of the screen corresponding to the previous or subsequent screen. minutes in the erased bottom half, and if there is an instruction to scroll 1/2 screen again, the next half will be displayed, and related images on screens that are far apart will be displayed up and down. It is possible to simultaneously display on each half of the CR7 display section.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 indicates a manual key means such as a keyboard attached to a CR7 display device, and reference numeral 2 indicates a scroll key determining means for determining whether the manually operated key is a scroll key and the type of scrolling. Reference numeral 3 denotes a key-corresponding screen output pointer setting means for setting a pointer to a portion to be displayed on the screen corresponding to each operated key.

4 is a counter that sets a count value in response to the key input; 5 is a secondary pointer creation means that creates a secondary pointer based on the output of the counter 4; 6 is a counter that performs an O reset in response to the key input; 7 is a CR7 display unit that displays a screen according to each pointer.

Next, the operation will be explained with reference to the flowchart shown in FIG.

Now, the screen is waiting for key power (Step I)
S), if there is some kind of key power, and this is a key power that instructs scrolling (step 2S), next, whether the scroll key power is one that specifies scrolling of one line or Determine whether scrolling is specified (step 3S), and 1
If a line is specified, the screen output pointer is updated by one line (step 4S), the scroll counter is reset to O (step 11S), and the screen is displayed on the CRT display unit 7 according to the screen output pointer. (Step 6S). On the other hand, if it is determined in step 3S that the scroll key instruction is not for one line, then it is determined whether or not the scroll key instruction is for one screen.
2S), if the instructions are for one screen, move the pointer to 1
The screen is updated (step 5S), and then the processes from step 138 onwards are executed.

In addition, in step 12S, if the instruction is not to use the scroll key for one screen, the scroll counter is
Set it to 1. In other words, 1 is added (step 13S), thereby determining whether or not it is the first 1/2 screen scroll instruction. Here, if it is determined that the scroll counter value is 1 (step 143), a secondary pointer is created since it is the first time (step 15S), and 1/2 screen scroll is performed based on the pointer of the current screen output. A pointer to a portion to be output later is calculated and displayed on the screen according to this secondary pointer (step 16 S).

On the other hand, if the scroll counter value is 2 or more in step 14S, the secondary pointer is updated by 1/2 screen scroll (step 17g), and then in step 16
At s, the screen is displayed according to the secondary points.

Note that in order to realize this process, conventional single-line scrolling,
A function to reset the scroll counter is added to one screen scroll. Thereby, by this reset, it can be determined whether scrolling for 1/2 screen is the first time or a continuation of the previous scroll.

FIG. 3 shows steps 138 to 17 as shown in FIG.
It shows the display content of the image displayed by the process of s.

In the above embodiment, as shown in FIG. 3, the case where the upper half of the image is left and the lower half of the image is scrolled is explained. Each image can be scrolled for display. It is also possible to scroll to display the next part of the image in both the upper and lower halves while leaving the image of the distant part displayed. Furthermore, it can be used in conjunction with the search function, and the bottom half can be scrolled based on the search function. Furthermore, instead of providing a secondary pointer, a counter can be used to calculate the portion to be output after scrolling each time.

〔Effect of the invention〕

As described above, according to the present invention, the screen displayed on the CRT display section can be scrolled in 1/2 screen increments by operating the scroll key. In addition to making changes or comparisons easier, the accuracy of these operations can be ensured, and the operator's fatigue can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a block connection diagram showing a screen 172 scrolling device according to an embodiment of the present invention, FIG. 2 is a flowchart showing image scrolling processing according to the present invention, and FIG.
The figure is an explanatory diagram showing an example of displaying an image by scrolling a 1/2 screen, FIG. 4 is an explanatory diagram showing a conventional screen scrolling process, and FIG. 5 is an explanatory diagram showing an example of displaying an image by scrolling. be. 1 is a key manual means, 2 is a scroll key judgment means, 3 is a screen output pointer setting means, 4 and 6 are counters, 5 is 2
Next pointer creating means, 7 is a CRT display section.

Claims (1)

[Claims] Determining whether the key operation is one-line scrolling or one-screen scrolling by a scroll key determining means,
The screen output pointer is updated for one line or one screen according to this judgment result, and each screen is updated according to each pointer.
In the screen scrolling method for outputting and displaying on the RT display section, key operations for 1/2 screen scrolling are determined by the scroll key determining means, and a secondary pointer is created or updated according to the result of this determination.
A screen scrolling method for a CRT screen, characterized in that 1/2 screen scrolling is performed according to a next pointer.