JPS61190385A - Multi-window display system for display unit - 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 display device, and in particular, when displaying a plurality of windows on a display screen and when moving or scrolling the windows, the present invention relates to a display device that can be used in a short processing time and when the windows are moved or scrolled. The present invention relates to a multi-window display method for a display device that can be easily implemented.

With the development of an advanced information society, various types of information processed by computer systems are increasingly being displayed on display devices, but when selecting the information you want to display from among these various types of information, it is necessary to open multiple windows. You may move or scroll this window to index the information you need.

Therefore, it is desirable to be able to display a plurality of windows, that is, display a multi-window, and move or scroll the windows quickly and easily.

[Conventional technology]

FIG. 3 is a block diagram of a circuit showing an example of a display device.

The processor 1 controls the display control circuit 3 to read the display data stored in the code buffer 2 and sends it to the display section 4 for display. That is, the display control circuit 3 scans and reads the code buffer 2, converts it into a video signal, and sends it to the display section 4.

The display unit 4 displays this display data on the display screen in synchronization with the rask scan.

When the processor 1 performs window display, it edits the code buffer 2, and edits the data to be displayed in the window, for example, as plain ◯, plane ◯, plain ◯.

[Problem that the invention seeks to solve]

As mentioned above, conventionally, if the planes ■ to ■ are displayed in a multi-window on the display unit 4 as shown in FIG. requires a great deal of time.

In other words, the plane ■ where the cursor 5 is located is given priority and all display data of the plane ■ is displayed, and the plane ■ is the plane ■.
It is necessary to edit so that the part superimposed on plane (2) is not displayed, and the part of plane (2) which is superimposed on plane (2) and (2) is not displayed.

Furthermore, when scrolling the window, the code buffer 2 must be rewritten sequentially, which poses the problem of requiring even more processing time.

[Means for solving problems]

The above problem is solved by a display device that displays data edited into multiple planes on a code buffer in a multi-window. A write control circuit that edits the data of the plane that has been edited, a buffer that stores the data of the plane edited by the write control circuit, and a display control circuit that reads and displays the data of the buffer, and the cutout circuit This problem is solved by the multi-window display method of the display device according to the present invention, in which the data in the buffer read by the display control circuit is superimposed on the data of the preferentially displayed plane extracted and displayed by the display controller.

[Function] In other words, the plane extracted by the extraction circuit that preferentially displays the plane where the cursor is located is displayed as is, and the other planes are sent to a write control circuit with an editing function, so that multi-window display is possible. Edit it as much as possible and store it in the buffer.

By reading out the contents of the buffer and displaying it in a superimposed manner on the plane with the cursor extracted by the extraction circuit, multi-window display, scrolling, etc. can be performed easily and at high speed.

〔Example〕

FIG. 1 is a block diagram of a circuit showing an embodiment of the present invention.
FIG. 2 is a diagram illustrating the contents displayed on the display section 4. As shown in FIG.

1 is the same as in FIG. 3 with the addition of an extraction circuit 6, a write control circuit 7, a buffer 8, a display control circuit 9, and an OR circuit 10. Planes ■ to ■ of the code buffer 2 are read by the display control circuit 3. and is preferentially displayed by the extraction circuit 6. For example, data of plane ■ is extracted.

The data on this plane ■ passes through the OR circuit 10 to the display section 4.
is sent and displayed. That is, the cutout circuit 6 is shown in FIG.
As shown in a), only the plane ■ where the cursor 5 is located is extracted and sent to the display unit 4.

The planes ■ and ■ extracted by the extraction circuit 6 are sent to the write control circuit 7, and the write control circuit 7 determines the portion where the plane ■ overlaps the plane ■ from the editing information of the planes ■ to ■ given from the processor 1. , and plain■ is plain■
and the portion overlapping with plane (2) is erased by exclusive OR and written to buffer 8.

The display control circuit 9 scans and reads the contents of the buffer 8, converts it into a video signal, and sends it to the display section 4 via the OR circuit 10.

Therefore, the display screen of the display unit 4 is displayed as shown in FIG. 2(a).
, the display data of the plane ■ where cursor 5 is located is in the front,
The display data of the plane ■ and the plane ■ are sequentially displayed in an overlapping manner, and the portions where the plane ■ overlaps the plane ■, and the portions where the plane ■ overlaps the planes ■ and ■ are displayed as being erased.

When the cursor 5 moves to the plane ■, the processor 1 controls the extraction circuit 6 via the display control circuit 3 to extract only the plane ■ and send it to the OR circuit 10. In addition, the editing information sent to the write control circuit 7 is changed, and as shown in FIG. The data is erased and written into the buffer 8.

The display control circuit 9 scans and reads the buffer 8,
The signal is sent to the display section 4 via the OR circuit 10.

Therefore, on the display screen of the display unit 4, as shown in FIG.
The display data of the plane ■ and the plane ■ are sequentially displayed in an overlapping manner, and the portions where the plane ■ overlaps the plane ■, and the portions where the plane ■ overlaps the planes ■ and ■ are displayed as being erased.

When the cursor 5 moves to the plane ■, the extraction circuit 6 extracts only the plane ■ and sends it to the 0R circuit 10 in the same manner as described above. In addition, the write control circuit 7 erases the portion where the plane ■ overlaps with the plane ■ and the portion where the plane ■ overlaps with the plane ■ by exclusive ORing and writes them into the buffer 8, as shown in FIG. 2 (C1). .

The display control circuit 9 reads out the buffer 8 and sends it to the display section 4. Therefore, on the display screen of the display unit 4, as shown in FIG. 2(C), the display data of the plane (2) where the cursor 5 is located is displayed in the foreground, and the display data of the planes (2) and (2) are sequentially overlapped on the back.

Scrap the planes displayed on this multi-window.
- When scrolling, scrolling can be easily performed by changing the scan start address at which the processor 1 scans the code buffer 2 of the display control circuit 3.

〔Effect of the invention〕

As explained above, the present invention allows multi-window display, scrolling, etc. to be performed quickly and easily.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a circuit showing one embodiment of the present invention, FIG. 2 is a diagram explaining the contents displayed on the display section 4, and FIG.
The figure is a block diagram of a circuit showing an example of a display device, and FIG. 4 is a diagram illustrating a multi-window display. In the figure, 1 is a processor, 2 is a code buffer, 3.9
is a display control circuit, 4 is a display section, 5 is a cursor,
6 is an extraction circuit, 7 is a write control circuit, 8 is a buffer, and 10 is an OR circuit.

Claims (1)

[Claims] In a display device that displays data edited into multiple planes on a code buffer in a multi-window, there is an extraction circuit that extracts only the plane to be displayed with priority and extracts data of other planes, and A write control circuit for editing data, a buffer for storing plane data edited by the write control circuit, and a display control circuit for reading and displaying the data in the buffer are provided, and the cutting circuit extracts and displays the data in the buffer. A multi-window display system for a display device, characterized in that data in a buffer read out by the display control circuit is superimposed on the displayed data of the plane to be displayed with priority.