JPH01126685A - Scroll out information display device - Google Patents

Abstract

PURPOSE: To easily display the layout of scrolled-out information by simple hardware by displaying contents of a VRAM for layout and partial contents of a VRAM on a CRT by switching. CONSTITUTION: A detection circuit 5 which detects character positions in each scrolled-out row, a VRAM 6 for layout where character position information detected by the detection circuit 5 for plural rows is stored, and a switching device 7 which performs such control that partial contents of the VRAM 3 and contents of the VRAM 6 for layout may be displayed on a picture display part 4 by switching are provided. When a data display area (c) is scrolled out by one row, it is added to the row in the bottom of a layout display area (b), and the whole of information is scrolled up. Thus, layout of the scrolled-out picture can be referred to, and positional relations on layout are confirmed with a high operability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a scroll-out information display device that can display a layout of scrolled-out information.

[Conventional technology]

Conventionally, in this type of display device, when referring again to a screen layout that has already been scrolled out, the user either scrolls down to reproduce the previous screen, or stores all of the scrolled-out information in a batch memory and reproduces it. That's how I went about it.

[Problem that the invention seeks to solve]

However, with the above-mentioned conventional display devices, when viewing a screen layout that has been scrolled out, it is necessary to scroll down and back, or it is necessary to store all the scroll-out information in the batsa memory and use hardware to reproduce it. However, it also had the disadvantage of being costly in terms of software.

For example, when creating a source program using the Pascal language and looking at the positional relationship on the layout to see the nesting status when editing, it is necessary to look at the layout that has been scrolled out again. There is also the problem that the equipment is inappropriate and the operability deteriorates, resulting in a decrease in productivity.

[Means for solving problems]

The present invention provides a detection circuit that detects a character position for each scrolled-out line, a layout VRAM that stores character position information detected by the detection circuit for multiple characters, and a VRAM.
1F) A switching device is provided for controlling a part and the content of the layout VRAM to be switched and displayed on the screen display section.

[Effect]

In the present invention, a switching device switches and displays the contents of a layout VRAM storing character positions detected by a detection circuit and a part of the contents of the VRAM.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

1 is a medium port (KB), 2 is αL3 is a VRAM that stores screen display information, 4 is a screen display section that controls the screen display of CRT2, and 5 is a number each time the information in VRAM 3 is scrolled out one line at a time. The presence/absence of characters is determined for each line, and if there is a character, it is set to "1", if there is no character, it is set to "0", etc.
A character position detection circuit 6 for converting into a value is a layout VRAM that stores a certain amount of information binarized in the character position detection circuit 5. This layout VRAM is FIF
It functions as an O memory, and if the default value of the capacity is n lines, then the information in the first line will be discarded when you try to input the n+IJ line.
This is a switching device that switches information in a part of the RAM 3 and the layout VRAM 6 and controls the information to be displayed on the CRT 2 via the screen display unit 4.

An example of screen switching operation on the CRT 2 is shown in FIG.

Normally, when information on the VRAM 3 is displayed, the first row is used as the control information display area 1, and the lower part is the data display area C.

When switching to the contents of the layout VRAM 6 according to an instruction from KBl, the first row of the screen becomes the layout display area (in this case, for example, 8 lines of data are displayed), and the lower part becomes the data display area. It remains unchanged at C.

FIG. 3 shows a different example of this layout display area. In this case, eight lines of scroll-out information are displayed on the first line of the 13th page, and "-" indicates the position where a character is detected. When the data display area C is scrolled out by one line, the line is added to the bottom line of the layout display area C, and when the entire data display area C is scrolled up.

In this way, in this example, only key human power from KBl is required.
It is possible to refer to the screen layout that has been scrolled out, and it is possible to confirm the positional relationship on the layout.
can be easily operated.

〔Effect of the invention〕

As explained above, the present invention is configured so that the contents of the layout VRAM and a portion of the VRAM are switched and displayed on the CRT, so that the layout of the scrolled out information can be easily displayed using simple hardware. There is.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram illustrating switching by a switching device, and FIG. 3 is a display example of a layout VRAM. 1...KBl 2...Cba, 3...VRA
M, 4...Screen display unit, 5...Character position detection circuit, 6...VRAM for layout, 7...Switching device.

Claims (1)

[Scope of Claims] A scroll-type display device that displays information from a VBAM on a CRT via a screen display unit, comprising: a detection circuit that detects a character position for each scrolled-out line; A scroll-out information display comprising: a layout VRAM that stores character position information for a plurality of lines; and a switching device that controls switching between a part of the VRAM and the content of the layout VRAM to display it on a CRT. Device.