KR940023277A

KR940023277A - Image time base correction device using memory means

Info

Publication number: KR940023277A
Application number: KR1019930003352A
Authority: KR
Inventors: 김준식
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1993-03-05
Filing date: 1993-03-05
Publication date: 1994-10-22

Abstract

본 발명은 모니터상에 재생되는 신호의 시간축에 따른 흔들림(jitter)을 보정하는 시간축 보정장치에 관한 것으로, 특히 메모리수단을 이용하여 화상의 시간축 보정을 실행할 수 있도록 된 메모리수단을 이용한 화상의 시간축 보정장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a time axis correction apparatus for correcting jitter along a time axis of a signal reproduced on a monitor, and in particular, to correct a time axis of an image using a memory means capable of performing time axis correction of an image using a memory means. Relates to a device.

본 발명은 입력데이터에 포함되어 있는 색동기신호의 주파수를 4체배하여 샘플링클록을 형성하는 VCO(22)와, 이 VCO(22)에서 출력되는 샘플링클록을 근거로 입력데이터를 아날로그/디지탈변환하는 A/D변환기(21), 이 A/D변환기(21)에서 디지탈변환되어 출력되는 디지탈 화상데이터를 저장함과 더불어 기준클록 발생기(24)에서 출력되는 독출클록에 따라 저장된 화상데이터를 순차 출력하는 메모리수단(23), 소정의 기준클록을 발생시키는 기준클록발생기(24) 및, 상기 메모리장치(23)로부터 출력되는 디지탈 화상데이터를 아날로그 데이터로 변환하는 D/A변환기(25)를 포함하여 구성된 것을 특징으로 한다.The present invention relates to a VCO 22 that forms a sampling clock by multiplying the frequency of the color synchronization signal included in the input data by 4, and an analog / digital conversion of the input data based on the sampling clock output from the VCO 22. A / D converter 21, a memory for storing digital image data digitally converted and output from the A / D converter 21 and sequentially outputting image data stored in accordance with the read clock output from the reference clock generator 24. Means 23, a reference clock generator 24 for generating a predetermined reference clock, and a D / A converter 25 for converting digital image data output from the memory device 23 into analog data. It features.

Description

Image time base correction device using memory means

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

제2도는 본 발명에 따른 화상의 시간축 보정장치를 나타낸 블록구성도이다.2 is a block diagram showing an apparatus for correcting a time axis of an image according to the present invention.

Claims

A VCO 22 that forms a sampling clock by multiplying the frequency of the color synchronization signal included in the input data by four, and an A / D that performs analog / digital conversion of the input data based on the sampling clock output from the VCO 22. A memory means 23 for storing digital image data digitally converted and output from the A / D converter 21 and sequentially outputting image data stored in accordance with the read clock output from the reference clock generator 24; , A reference clock generator 24 for generating a predetermined reference clock, and a D / A converter 25 for converting digital image data output from the memory device 23 into analog data. An apparatus for correcting time axis of an image using memory means.

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