KR930001074A - Color conversion circuit of color graphic data - Google Patents

Abstract

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Description

Color conversion circuit of color graphic data

Since this is an open matter, no full text was included.

1 is a color conversion circuit diagram according to the present invention.

2 is a circuit diagram of one specific embodiment of the level controller of FIG.

* Explanation of symbols for main parts of the drawings

12: decoder 14: memory controller

16: first memory 18: color memory

20: color level controller

Claims (3)

In the color conversion circuit of color graphic data having an encoder 12 for decoding color graphic information coded and recorded on a CD and outputting R, G, and B color graphic data and control data, the color selection data is a predetermined address. A memory controller for controlling the first memory 16 according to graphic control information output from the decoder 12 and a first memory 16 stored in an area and outputting color selection data stored by a predetermined control; 14 and a color memory for storing R, G, B color graphic data output from the decoder 12 and outputting the stored R, G, B color data by output control of the first memory 16 ( 18) and R, G, and B color data outputted from the color memory 18, respectively, and inputted by the first and second control signals (U / D) (CLK) signals, respectively. R, G, B Cala de And a color level converter (20) for varyingly outputting data. The color level converter (20) is configured with the highest level and the lowest level, respectively, and inputs one color data of R, G, and B color data output from the color memory (18). 1, consisting of R, G, B level controllers 22, 24, 26 for variable output by second control signal W / D CLK or for selecting and outputting the set highest or lowest level data. And a color conversion circuit for color graphic data. 3. The R, G and B level controllers 22, 24 and 26 each up / down the input of the second control signal CLK according to the input state of the first control signal U / D. The counter 46 adds down counting and outputs a sine bit and counting data, and the color data output from the color memory 18 and the counting data of the counter 46 are added, and a carry bit and a variable color added according to the result are added. An adder 48 for outputting data, input data of the set maximum value MAX and the lowest value MIN, and variable color data of the adder 48, and a sine bit and an adder of the counter 46; And a multiplexer (50) for selecting and outputting one of the input data by the carry bit logic of (48). ※ Note: The disclosure is based on the initial application.