JPS6057387A - Video smearing circuit for computer image generation type video generator - 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 The present invention relates to an image filling circuit in a computer-generated image generating apparatus.

Does the present invention add a new color to a picture element based on the edge data of the picture element obtained through calculation?

It is characterized by deciding whether to apply the same color as the previous picture element, and its purpose is to display the color of the figure to be displayed. The operation will be explained based on the video example shown in the figure. Based on the parameters for edge generation determined by the computer 1, the edge generation device 2 generates edge data (coordinate values and color numbers) of a figure synchronized with the scanning line. For example, the scanning line l in FIG.
, the color numbers for the coordinate values o, m, and n are C
0LI, C0L2. It becomes like C0LI. These coordinate values and color numbers are input manually to the coloring circuit 3.

Color numbers corresponding to all picture elements are output in synchronization with the video signal. This color number is converted to the color level corresponding to the color number in the next coloring circuit 4, and then subjected to parallel/serial conversion and D/A conversion to become a video signal, and the video is displayed on the TV monitor 5. . Since the reading from the coloring circuit 3 is synchronized with the video signal, parallel processing is performed due to the need for high-speed processing, and the number of readings is determined by the display resolution.

An example of the internal configuration of each coloring circuit 3 is shown in FIG. This operation is divided into a write process and a read process, which are switched and executed every horizontal scan. The writing process is for the lower 2 coordinate values.
Select fill circuit #0-#3 by bit,
The color number is written into the memory 6 using the upper bit as the write address. At this time.

1" is also written to the WM memory 7. Next, a time chart of the read processing is shown in FIG. At that time.

The contents of the WM memory 7 are also read out at the same time and latched into the latch A9. If latch A9 is "1", the content (color number) of latch B8 is set as the output of the corresponding coloring circuit, and latch A
If 9 is 0', the color number output from the previous filling circuit of the corresponding filling circuit is output. Next, the memory addresses 1, 2, 3, . . . are sequentially read out and the same processing is performed. Note that the previous stage of the coloring circuit #0 is #3.

As explained above, according to the present invention, it is possible to quickly color the displayed figures of the 20-divider image generation system, and
It can be applied to computer graphics.

[Brief explanation of drawings]

FIG. 1 shows an example of the configuration of a computer-generated image generation device. FIG. 2 shows an example of a video display, FIG. 3 shows an example of the configuration of a filling circuit, and FIG. 4 shows a processing time chart of the filling circuit. 1: Calculator, 2: Enoji generator, 3: Colored circuit, 4: Colored circuit, 5: TV monitor. 6: Memo 1c 7: WH memory, 8: Latch B. 9: Latch A. Figure 1 Figure 2 Figure 3 Figure 4 Output (m)

Claims (1)

[Claims] In the image filling circuit of a computer-generated image generation device, a memory for storing color data for starting coloring and a 1-bit memory indicating that data is stored in this memory are provided, and the contents of this 1-bit memory are stored. Computer-generated imaging characterized in that if the data is read out and there is data, the color data is output from the storage memory, and if the data is not stored, the color data of the previous picture element is output. Image filling circuit of a method image generator.