JPS6048078A - Display image editing system - 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 Application of the Invention] The present invention is applied to an image command editing processing section in a graphic display device, and relates to improving the processing efficiency of partial update data by a host computer.

[Background of the invention]

Conventionally, in a graphic display device, an image command transferred from a host computer to a buffer memory is subjected to coordinate transformation such as enlargement or reduction, and clipping (extrusion) processing in an editing processing section, and the created display command is refreshed. Basically, it is stored in memory.

Therefore, the data size of the image command in the buffer memory and the display command in the fresh memory becomes undefined, resulting in the following drawbacks.

1. It is difficult to determine the address in the refresh memory where the display command corresponding to the main image command is stored from the image command storage address in the buffer memory.

Therefore, when a part of the image command is updated by the host computer, the editing processing unit usually re-edits all the image commands in the buffer memory, and the update take ratio (= updated data amount / total data amount ) is small, the processing efficiency decreases significantly.

[Purpose of the invention]

An object of the present invention is to eliminate the drawbacks of the conventional method and efficiently (re-edit) partially updated data transferred from a host computer in an editing processing section, thereby improving data processing efficiency. It is in.

[Summary of the invention]

The present invention is characterized in that the disadvantages of the conventional method can be eliminated by making the buffer memory and the refresh memory blocks constituted by a specific number of words, and by setting an address correlation between these two memories.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in more detail with reference to embodiments shown in the accompanying drawings.

Figure 1 shows a block diagram of the graph ink display device. Image commands are transferred from the host computer 1 to the buffer memory via the interface 2. The editing processing section 4 performs editing processing such as coordinate transformation and clipping on this image command, stores the created display command in the refresh memory 5, and displays the figure on the CRT 6.

FIG. 112 shows the block configuration and block correspondence of the buffer memory and refresh memory in this system. Here, one block size of refresh memory 8 is 1
If it is 0, the thickness is such that when an image command in one block 9 of the buffer memory 7 is edited into a display command, it can be stored reliably.

In this method, addresses correspond on a 1:1 basis for each block between the buffer memory and the refresh memory. now,
When the partial update data 11 is transferred from the host computer, the editing processing section edits the image of only the update data 11 based on the start address and the number of transferred words, and transfers a corresponding display command to the flexible memory. The CRT 6 displays these display commands transferred to the block 10 of the Frenonyu memory 8 and all the display commands transferred previously.

That is, host computer 1. The interface 2 and the editing processing unit 4 only need to be involved in processing a portion of the entire image (processing efficiency can be improved).

〔Effect of the invention〕

As described above, by employing the present invention, when a part of data in the buffer memory is updated, a block containing new data in the history is detected,
A series of processing operations such as editing processing and storing display commands in the corresponding blocks of free run memory are facilitated, making it possible to improve data processing efficiency in the editing processing section.

[Brief explanation of the drawing]

Figure A11 is a block diagram of the graph ink display device. Figure A11 is an explanatory diagram of the block configuration of the buffer memory and refresh memory and the correspondence between each block according to an embodiment of the present invention. 1...Post electronic computer, 2.Interface section, 6.Buffer memory, 4.Edit processing section, 5..Refresh memory, 6..C
)t T', 7. Block configuration of buffer memory, 8... Block configuration of refresh memory. Representative Patent Attorney Akio Takahashi

Claims (1)

[Claims] By dividing the buffer memory and refresh memory into blocks each having a specific number of words and making each block correspond to each other, the block of the buffer memory is detected according to the start address of the update image command transferred to the Pan7A memory and the number of transferred words, A display image editing processing method characterized in that it is possible to update a part of the entire display screen from a VC by storing a created display command in a corresponding block of Frenonyu memory.