KR900019493A - Color image display device of color LED - Google Patents

Abstract

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Description

Color image display device of color LED

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

1 is a schematic schematic diagram of the present invention, FIG. 2 is a circuit block diagram showing the schematic diagram of FIG. 1 in more detail, and FIG. 3 is a reference diagram of one drive control circuit and driver of a color LED unit on the color image display part in FIG. .

Claims (7)

An apparatus for receiving and outputting image data from a color graphics system (F) such as a PC including a NTSC system color image system (E) or an EGA card 4a and a timing board 5a, such as a VTR. The color image data and the synchronization signal from the color image system (E) are reset according to the display range of the color LED image display board (93) by the dot matrix combination of the color LED unit (93a) and stored and read out one by one. Color graphics unit A and color data from the color graphics system F and the synchronization signal is reset according to the display range on the side of the color LED image display board 93 so as to store and read out one by one. B), an image selector C for providing the data output of the color image unit A and the color graphic unit B independently or alternately to the color LED image display board 93 at the same time; On the color image portion (A) and the color graphics portion (B) side The drive control circuit of the interface 7 which provides line select pulses, clock pulses, and luminance pulses in the vertical and horizontal ranges of the preset synchronization signal, and the output of the interface 7 side are output to the color LED image display board 3. A color image display device for color LEDs, characterized in that the line interface on the (91) side is associated with the line interface (8). The color image unit (A) according to claim 1, further comprising: a color decoder (1a) for demodulating a color image signal from a color composite video signal, and a synchronous separator (2a) for separating a synchronization signal from the color decoder (1a); Video AD converter (1) for converting analog data into digital, timing control logic (3) for generating vertical and horizontal synchronization signals and various control signals reset from the synchronous separator (2a) output, and color image data A color image display device of a color LED, characterized by comprising a color video memory (2) for storing and reading. 2. The color graphic unit (B) according to claim 1, wherein the color graphic unit (B) includes timing control logic (5) for generating vertical and horizontal synchronization signals and various control signals for resetting synchronization signals from the EGA card (4a), and storing color graphic data. A color image display device of a color LED, characterized by comprising a readout color graphic memory (4). 2. The image selecting unit (C) according to claim 1, wherein the image selecting unit (C) performs address selection or the like on the color video memory (2) or the color graphics memory (4) by a control signal provided to the control board (5a) on the PC side. An image graphic control circuit 6a for generating a control signal, an image selector 62 for controlling selection of output from the image graphic selector 61 and the memories 2, 4, graphic selector 63 and or gate 6b. Color image display device of the color LED, characterized in that the configuration including. The clock interface (73) according to claim 1, wherein the interface (7) generates n clock signals from vertical and horizontal synchronization reduction signals and clock signals on the first and second timing control logics (3,5). A color image display device of a color LED, characterized in that the configuration comprises a luminance interface (3) for generating two luminance signals and a line select interface (72) for generating n line select signals. The vertical and horizontal synchronization signals according to claim 2 or 3, wherein the timing control logics 3 and 5 reset and output the vertical and horizontal synchronous signals so as to correspond to the display range of the color LED image display board 93 from the synchronization signal. Synchronization setting section 31, 51, horizontal synchronization setting section 32, 52, control signal counter section 33, 53, decoders 34, 54 of R / W and chip select signal output, address generation counter section of memory (35,55), color image display device of the color LED, characterized in that the configuration is provided with a timing coat roll logic (3,5), including the image or graphics, and the outer fragment control (OC) for controlling the overlapping operation thereof . 7. The external control unit (OC) according to claim 6, wherein the external control unit (OC) stores a PT stage for temporarily fixing graphic data in a memory when displaying an image of a color image and graphic data, a V / G stage for selecting an image or graphic, and data for one screen An LD stage to control is provided, and includes flip-flops JK and D-flop flops DF ₁ and DF ₂ on the side of the vertical synchronization signal VS, which perform these control functions, and a video graphic control signal selector VGS. Color image display device of a color LED, characterized in that the circuit. ※ Note: The disclosure is based on the initial application.