KR930015665A - Burst Tank Circuit Using PLL - Google Patents

Burst Tank Circuit Using PLL Download PDF

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Publication number
KR930015665A
KR930015665A KR1019910023007A KR910023007A KR930015665A KR 930015665 A KR930015665 A KR 930015665A KR 1019910023007 A KR1019910023007 A KR 1019910023007A KR 910023007 A KR910023007 A KR 910023007A KR 930015665 A KR930015665 A KR 930015665A
Authority
KR
South Korea
Prior art keywords
burst
signal
latch
tank circuit
pll
Prior art date
Application number
KR1019910023007A
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.)
Filing date
Publication date
Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019910023007A priority Critical patent/KR930015665A/en
Publication of KR930015665A publication Critical patent/KR930015665A/en

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  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)

Abstract

VTR 또는 TV등의 영상처리 시스템에서 버스트 신호를 검출한 후 증폭하고 파형변환하며 그 변환한 파형의 폭들을 조정한 후 PLL을 통해 위상동기 시킴으로써 3.58MHZ의 균일한 신호로 연속해서 유지시키는 것이다.In the image processing system such as VTR or TV, the burst signal is detected, amplified and converted, and the width of the converted waveform is adjusted by phase synchronization through a PLL to maintain a uniform signal of 3.58 MHz.

Description

PLL을 이용한 버스트 탱크회로Burst Tank Circuit Using PLL

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 시스템 블럭도, 제2도는 본 발명에 따른 제1도의 주요부분에 대한 동작 파형도.1 is a system block diagram according to the present invention, and FIG. 2 is an operating waveform diagram of the main part of FIG. 1 according to the present invention.

Claims (3)

영상처리 시스템의 버스트 신호 처리 회로에 있어서, 복합영상신호를 받아 버스트 신호를 검출하는 버스트 검출부(1)와, 상기 버스트검출부(1)가 검출한 버스트 신호를 받아 2H마다 증폭하여 출력하는 적응증폭기(2)와, 상기 적응증폭기(2)가 증폭하여 출력한 신호를 받아 구형파로 변환시키는 파형변환기(3)와, 상기 파형변환기(3)가 변환출력하는 구형파 신호를 받아 소정 제어신호에 따라 래치출력하는 래치(4)와, 상기 래치(4)의 출력을 받아 펄스의 폭을 제1값으로 조정하는 제1펄스폭 조정부(5)와, 상기래치(4)의 출력을 받아 펄스의 폭을 제2값으로 조절하는 제2펄스폭 조절부(6)와, 상기 제1,제2펄스폭 조절부(5, 6)의 출력을 비타적으로 논리합함으로써 상기 제어신호를 생성한후 상기 래치(4)에 공급하는 게이트(7)와, 상기 제1펄스폭 조절부(5)의 출력을 위상동기 시켜 출력하는 PLL로 구성함을 특징으로 하는 PLL을 이용한 버스트 탱크 회로.A burst signal processing circuit of an image processing system, comprising: a burst detector (1) for receiving a composite video signal and detecting a burst signal; and an adaptive amplifier for amplifying and outputting the burst signal detected by the burst detector (1) every 2H ( 2) and a waveform converter 3 for receiving the signal amplified by the adaptive amplifier 2 and converting the signal into a square wave, and receiving the square wave signal converted and outputted by the waveform converter 3 according to a predetermined control signal. The latch 4, a first pulse width adjusting unit 5 that receives the output of the latch 4 and adjusts the width of the pulse to a first value, and receives the output of the latch 4 to reduce the width of the pulse. The latch 4 is generated after the control signal is generated by integrating the second pulse width adjusting unit 6 adjusted to two values and the outputs of the first and second pulse width adjusting units 5 and 6. ) And the output of the first pulse width adjusting section 5 The PLL, characterized in that consists of a PLL to be synchronized to the output tank circuit of a burst. 제1항에 있어서, 제1값은 140nsec일 수 있음을 특징으로 하는 PLL을 이용한 버스트 탱크 회로.The burst tank circuit of claim 1, wherein the first value may be 140 nsec. 제1항에 있어서, 제2값은 4usec일 수 있음을 특징으로 하는 PLL을 이용한 버스트 탱크 회로.The burst tank circuit of claim 1, wherein the second value may be 4usec. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910023007A 1991-12-14 1991-12-14 Burst Tank Circuit Using PLL KR930015665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910023007A KR930015665A (en) 1991-12-14 1991-12-14 Burst Tank Circuit Using PLL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910023007A KR930015665A (en) 1991-12-14 1991-12-14 Burst Tank Circuit Using PLL

Publications (1)

Publication Number Publication Date
KR930015665A true KR930015665A (en) 1993-07-24

Family

ID=67356771

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910023007A KR930015665A (en) 1991-12-14 1991-12-14 Burst Tank Circuit Using PLL

Country Status (1)

Country Link
KR (1) KR930015665A (en)

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