KR960009607A

KR960009607A - Vertical Sync Stabilizer for Multi-System TV

Info

Publication number: KR960009607A
Application number: KR1019940021264A
Authority: KR
Inventors: 민기식
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1994-08-27
Filing date: 1994-08-27
Publication date: 1996-03-22

Abstract

본 발명은 다중시스템의 텔레비젼에서 동기신호의검출이 완전치 못한 경우에 발생되는 화면의 흔들림 현상을 제거하기 위한 수직동기 안정화 장치에 관한 것으로 방송을 선국하기 위한 튜너(1)와 선국된 방송신호로부터 영상 및 음성의 중간주파신호를 검출하는 IF회로(2), 이 IF회로(2)의 영상 중간주파신호를 근거로 화면상에 출력될 영상신호 및 수직편향신호를 생성하는 크로마IC(3) 이 크로마IC(3)로부터의 R, G, B신호와 휘도신호에 따라 CRT를 구동하는 CRT구동회로(4), CRT의 수직편향요크로 편향신호를 인가하는 수직편향회로(5), 상기 IF회로(2)에서 출력되는 영상신호로부터 동기신호를 검출하는 동기 분리회로(6), 이 동기 분리회로(6)에서 검출된 동기신호의 레벨을 검출하는 감지부(7), 상기 동기 분리회로(6)에서 검출된 수직동기신호의 주파수를 저장한 메모리(8), 상기 감지부(7)의 검출결과에 따라 상기 메모리(8)에 저장된 수직동기 신호의 주파수를 크로마IC(3) 및 상기 수직편향회로(5)에 인가하는 마이크로 컴퓨터(9)를 포함하여 구성된다.The present invention relates to a vertical synchronization stabilization device for eliminating the shaking of the screen generated when the detection of the synchronization signal is not complete in a television of a multi-system, from a tuner (1) for tuning broadcast and a tuned broadcast signal. IF circuit 2 for detecting the intermediate frequency signal of video and audio, and chroma IC 3 for generating the image signal and vertical deflection signal to be output on the screen based on the image intermediate frequency signal of the IF circuit 2 A CRT driving circuit 4 for driving the CRT according to the R, G, and B signals and the luminance signal from the chroma IC 3, a vertical deflection circuit 5 for applying a deflection signal to the vertical deflection yoke of the CRT, and the IF circuit A synchronous separation circuit 6 for detecting a synchronous signal from the video signal output from (2), a sensing unit 7 for detecting the level of the synchronous signal detected by the synchronous separation circuit 6, and the synchronous separation circuit 6 The frequency of the vertical sync signal detected by The microcomputer 9 for applying the frequency of the vertical synchronization signal stored in the memory 8 to the chroma IC 3 and the vertical deflection circuit 5 according to the detection result of the memory 8 and the sensing unit 7. It is configured to include.

Description

Vertical Sync Stabilizer for Multi-System TV

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 1실시예에 따른 다중시스템 텔레비젼의 수직동기 안정화 장치.1 is a vertical synchronization stabilization apparatus for a multi-system television according to an embodiment of the present invention.

Claims

An IF circuit (2) for detecting an intermediate frequency signal of video and audio from a tuner (1) for tuning broadcasting and a tuned broadcast signal, and being output on the screen based on the image intermediate frequency signal of the IF circuit (2). A chroma IC 3 for generating a video signal and a vertical deflection signal, a CRT driving circuit 4 for driving a CRT according to the R, G, and B signals and a luminance signal from the chroma IC 3, and a vertical deflection yoke of the CRT. A vertical deflection circuit 5 for applying a deflection signal to the circuit, a synchronous separation circuit 6 for detecting a synchronous signal from the image signal output from the IF circuit 2, and a synchronization signal detected by the synchronous separation circuit 6 A detection unit 7 for detecting a level, a memory 8 storing a frequency of a vertical synchronization signal detected by the synchronization separation circuit 6, and a memory 8 according to a detection result of the detection unit 7; Micro to apply the frequency of the stored vertical synchronization signal to the chroma IC (3) and the vertical deflection circuit (5) Vertical synchronization stabilization apparatus for a multi-system television, comprising a computer (9).

※ Note: The disclosure is based on the initial application.