KR970022714A - Computer and TV, video signal interface device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal interface device of a computer and a television which converts a video signal from a computer so that it can be viewed on a television. A first buffer unit 210 for temporarily storing and outputting the same; A second buffer unit 220 for temporarily storing and outputting a first horizontal and vertical synchronization signal from the computer 100; A second clock signal obtained by dividing the first clock signal into two parts based on the first horizontal and vertical synchronization signals from the second buffer unit 220, and a read / write control signal and a second horizontal and vertical synchronization signals A synchronization control unit 230 for outputting; An A / D converter configured to sample R, G, and B color signals from the first buffer unit 210 based on the first clock signal from the synchronization controller 230, and convert the R, G, and B color signals into a predetermined bit of digital color signals 240 and; The digital color signal from the A / D converter 240 is stored by one line based on a read / write control signal in synchronization with the first clock signal from the synchronization controller 230, and the synchronization controller ( A line memory section 250 for synchronizing with the second clock signal from 230 and outputting a digital color signal corresponding to one line amount stored based on the read / write control signal; A computer game including a D / A converter 260 for converting the digital color signal from the line memory unit 250 into analog R, G, and B color signals based on the second clock signal and outputting the analog color signal. Stereoscopic images can be viewed on display devices such as large televisions.

Description

Computer and TV, video signal interface device

As this is a public information case, the full text was not included.

1 is a block diagram of an interface device according to the present invention.

2 is a waveform diagram for explaining the present invention.

Claims (1)

An interface device 200 capable of converting a video signal of a computer 100 into a television video signal format, wherein the R, G, and B color signals from the computer 100 are constantly maintained without a change in a DC level. A first buffer portion 210 to be formed; A second buffer unit 220 for temporarily storing and outputting a first horizontal and vertical synchronization signal from the computer 100; A second clock signal obtained by dividing the first clock signal and the first clock signal into two parts based on a first horizontal and vertical synchronization signal from the second buffer unit 220, a read / write control signal, a second horizontal signal, A synchronization controller 230 for selectively outputting a vertical synchronization signal; An A / D converter configured to sample R, G, and B color signals from the first buffer unit 210 based on the first clock signal from the synchronization controller 230, and convert the R, G, and B color signals into a predetermined bit of digital color signals 240 and; The digital color signal from the A / D converter 240 is stored by one line based on a read / write control signal in synchronization with the first clock signal from the synchronization controller 230, and the synchronization controller ( A line memory section 250 for synchronizing with the second clock signal from 230 and outputting a digital color signal equal to the amount of one line stored based on the read / write control signal; An image of a computer and a television including a D / A converter 260 for converting a digital color signal from the line memory unit 250 into analog R, G, and B color signals based on the second clock signal and outputting the analog color signal. Signal interface device. ※ Note: The disclosure is based on the initial application.