JPS63195779A - Color graphic display processor - Google Patents

Abstract

PURPOSE:To set the priority for graphic display regardless of the writing order by displaying colors via a look-up table LUT after setting the priority to display data written in a VRAM. CONSTITUTION:The display data is sent to a vector/character generator 1 and then to a VRAM 2 to be written there for each type of the data. A priority setting circuit 3 displays various data dividedly based on the priority desired by an operator. If these display data overlap with each other at the same point on a screen, these are overlapped in the order of priority. The chrominance and luminance levels are given to the data via a LUT4. The data are converted into a serial form from a parallel form by a parallel/serial converter 5 and outputted through a D/A converter 6 in the form of video signals of R, G and B respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a color graphic display processing device, and in particular, to a color graphic display processing device, and particularly to a color graphic display processing device for various display data in graphic display.
The present invention relates to a display processing device that can control display brightness and set priorities among display data.

(Prior Art) Conventionally, this type of color graphic display processing device, as shown in FIG. )
4, a parallel-to-serial converter 5, and a D/A converter 6. Due to the memory capacity constraints of the VRAM 2, the color to be displayed is selected and the color code is mapped to the corresponding VRAM.
When writing to the RAM and displaying, the data is read from the VRAM 2 at TV timing and the color corresponding to this color code is converted into brightness levels of red (R), green (G), and blue (B). This conversion is performed by the LUT4.

(Problems to be Solved by the Invention) In the conventional display processing device described above, the color at a certain point on the display is determined by the VRAM color code written in the logical address corresponding to that position. Data written to VRAM cannot be easily changed later. For example, if another image is written over a graphic display written in VRAM, the later writing will take priority and the previously written data will be destroyed. In other words, at the intersection of certain lines, the color changes to the color of the line drawn later. If this restricts writing, the write data must be arranged in an orderly manner.

However, for example, in the case of air traffic control displays that need to process and display written data in real time, various types of data arrive every moment, making it difficult to align the data, and the display of various types of data may overlap or overlap. It is characterized by a large number of Furthermore, among the various types of data, there is usually a mixture of the most important data and the reference-level data. For example, if the number 4 and the opening of the symbol overlap as shown in Figure 3, it is difficult to read with the same color and brightness, but if you change the display order and make it as shown in Figure 4 or Figure 5, each will become clear. I understand that.

An object of the present invention is to provide a color graphic display processing device that solves the above-mentioned problems by providing separate VRAMs for each type of display data and a priority setting circuit that can be set arbitrarily for each VRAM. It is in.

(Means for Solving the Problem) A color graphic display processing device according to the present invention includes an image memory corresponding to a type of display data, a priority order setting circuit for setting a display order for the image memory, and a color graphic display processing device according to the present invention. and a look-up tape that defines the.

(Example) Next, the present invention will be explained by way of example with reference to the drawings.

FIG. 1 is a block diagram of a display processing device according to an embodiment of the present invention. 1 is a vector/character generator that generates vectors and characters for generating graphic data; 2 is a VR that holds the data written by the generator 1 and outputs the data in synchronization with the TV raster.
AM, 3 is a priority setting circuit that determines which screen of the VRAM 2 is displayed in what priority order, and 4 is a LUT (lookup table) that sets brightness and color.
, 5 is a parallel-to-serial converter that converts data from parallel to serial;
6 is a D/A converter that converts digital to analog video.

First, display data is sent to a generator 1 that generates vectors and characters, generates line segments, circles, arcs, characters, symbols, etc., and provides the data to the VRAM 2 according to specifications. At this time, it is classified according to the type of data, and which V
It can be decided whether to write to RAM. Data in VRAM2 is read out in synchronization with TV display. The priority setting circuit 3 provides a display of various data classified according to the priority order desired by the operator, and when there is overlap with lines, characters, background, etc. at the same point on the screen, it is displayed that is destroyed by other display. The screens that you do not want can be given first priority and their order can be set in order. This circuit can be easily configured using a priority encoder or the like. The next LUT4 is the VR
After determining the priority of the AM2 data, it is determined in what color and at what brightness level the AM2 data will be displayed. Then, the parallel data is converted into serial data by the converter 5 and sent to the D/A converter 6. The D/A converter 6 receives the digital data and converts it into R (red), G (green), and B
(blue) video signal and output it.

(Effects of the Invention) As explained above, the present invention writes data to independent VRAMs depending on the type of display data, sets priorities for displaying these data, and furthermore, By processing whether to display in color using LUT, when displaying figures and characters on the display screen, display priority can be set without being affected by the writing order, and colors can be selected in the same way as before. effective.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a display processing device according to an embodiment of the present invention, FIG. 2 is a block diagram showing a conventional configuration example, FIG. 3 is a diagram showing a conventional display example, and FIGS. The figure is a diagram showing a display example according to the present invention. 1... Vector character generator, 2... VRA
M (image video memory), 3...priority setting circuit, 4...LUT (lookup table), 5...
Parallel-serial converter, 6...D/A converter. Agent Patent Attorney Toshikichi Somekawa Figure 3 Figure 4 Figure 5 ○・・・・・・○

Claims (1)

[Claims] A color graphic display processing device comprising: an image memory corresponding to a type of display data; a priority setting circuit for setting a display order for the image memory; and a lookup table for determining colors. Display processing device.