KR920019099A - Control frame pulse generator - Google Patents

Control frame pulse generator Download PDF

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Publication number
KR920019099A
KR920019099A KR1019910003679A KR910003679A KR920019099A KR 920019099 A KR920019099 A KR 920019099A KR 1019910003679 A KR1019910003679 A KR 1019910003679A KR 910003679 A KR910003679 A KR 910003679A KR 920019099 A KR920019099 A KR 920019099A
Authority
KR
South Korea
Prior art keywords
signal
burst
synchronization signal
oscillation
outputting
Prior art date
Application number
KR1019910003679A
Other languages
Korean (ko)
Inventor
박재찬
Original Assignee
강진구
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019910003679A priority Critical patent/KR920019099A/en
Publication of KR920019099A publication Critical patent/KR920019099A/en

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  • Studio Circuits (AREA)

Abstract

내용 없음No content

Description

제어프레임 펄스 발생회로Control frame pulse generator

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

제1도는 본 발명에 따른 제어프레임 펄스 발생회로의 블럭다이어그램,1 is a block diagram of a control frame pulse generation circuit according to the present invention,

제2도는 수직-블랭크 구간 신호파형도이다.2 is a vertical-blank interval signal waveform.

Claims (1)

영상신호의 디지틀처리시 구분하기 위한 제어프레임 펄스 발생회로에 있어서; 영상신호에서 복합동기신호를 검출하기 위한 복합동기 신호분리부; 상기의 분리된 동기신호에서 수직동기신호만을 검출하기 위한 수직동기 신호분리부; 상기의 수직동기신호를 6H 지연시키기 위한 신호지연부; 상기의 지연된 신호의 펄스폭을 10MHZ만큼 조정하기 위한 펄스폭조정부; 상기의 펄스폭이 조정된 신호와 복합동기신호를 논리조합하되 영상신호의 1필드와 3필드에서는 하이상태의 신호를 출력하며 2필드와 4필드에서는 로우상태의 신호를 출력하는 노아게이트; 비디오 신호에서 버어스트신호만을 추출하기 위한 버어스트검출부; 상기의 펄스폭이 조정된 신호가 반전되어 입력된 신호와 상기의 버어스트신호를 논리조합하여 1필드와 3필드의 10번째 수직동기신호의 버어스트 신호만을 출력하기 위한 앤드게이트; 상기의 버어스트 신호를 입력받아 이를 후속신호가 입력될때까지 일정한 발진동작을 수행하는 탱크회로부; 상기의 탱크회로부에서 출력되는 발진신호와 3.58MHZ의 발진신호를 위상비교하기 위한 위상비교부 상기의 발진신호와 3.58MHZ의 발진신호가 동위상일 경우에는 하이상태의 신호를 출력하고, 역위상일경우에는 로우상태의 신호를 출력하기 위한 차지펌프; 상기의 노아게이트와 차지펌프의 출력을 논리조합하여 4프레임마다 1개의 제어프레임 펄스신호를 출력하기 위한 앤드게이트로 구성시켜서 됨을 특징으로 하는 제어프레임 펄스 발생회로.A control frame pulse generation circuit for discriminating during digital processing of a video signal; A composite synchronization signal separator for detecting the composite synchronization signal from the image signal; A vertical synchronization signal separator for detecting only a vertical synchronization signal from the separated synchronization signal; A signal delay unit for delaying the vertical synchronization signal by 6H; A pulse width adjusting unit for adjusting the pulse width of the delayed signal by 10 MHz; A noah gate for logically combining the pulse width-adjusted signal and the composite synchronization signal, and outputting a high state signal in field 1 and 3 of the video signal and a low state signal in field 2 and 4; A burst detection unit for extracting only a burst signal from the video signal; An AND gate for outputting only the burst signal of the 10th vertical synchronization signal of one field and three fields by logically combining the input signal and the burst signal by inverting the signal whose pulse width is adjusted; A tank circuit unit which receives the burst signal and performs a constant oscillation operation until a subsequent signal is input thereto; Phase comparison unit for phase comparison between the oscillation signal output from the tank circuit unit and the oscillation signal of 3.58MHZ. When the oscillation signal and the oscillation signal of 3.58MHZ are in phase, a high state signal is output. A charge pump for outputting a low state signal; And an AND gate for outputting one control frame pulse signal every four frames by logically combining the outputs of the NOA gate and the charge pump. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019910003679A 1991-03-07 1991-03-07 Control frame pulse generator KR920019099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910003679A KR920019099A (en) 1991-03-07 1991-03-07 Control frame pulse generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910003679A KR920019099A (en) 1991-03-07 1991-03-07 Control frame pulse generator

Publications (1)

Publication Number Publication Date
KR920019099A true KR920019099A (en) 1992-10-22

Family

ID=67400475

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910003679A KR920019099A (en) 1991-03-07 1991-03-07 Control frame pulse generator

Country Status (1)

Country Link
KR (1) KR920019099A (en)

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