KR970029506A

KR970029506A - Auto-tracking optimizer according to playback mode

Info

Publication number: KR970029506A
Application number: KR1019950046567A
Authority: KR
Inventors: 원종호
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-11-30
Filing date: 1995-11-30
Publication date: 1997-06-26

Abstract

본 발명은 재생모드 상태에 따른 자동트랙킹 최적화 회로에 관한 것으로서, 특히 헤드에서 재생된 재생 신호를 60dB로 증폭하는 증폭기와, 상기 중폭기의 출력에서 컬러신호를 필터링하는 컬러 트랩부와, 상기 컬러 트랩부의 출력을 인가되는 DC 값에 따라 증폭하는 연산 증폭기와, 장시간 모드일경우 상기 연산 증폭기로 인가되는 DC 값을 낮추는 DC 출력부와, 상기 연산 증폭기의 출력에서 엔벨로프 신호만을 검출하는 검출부와, 상기 검출부의 출력을 리시 래치하여 출력하는 버퍼로 구성되어, 장시간 모드(EP) 재생시 연산 증폭기로 인가되는 DC 진압을 낮게하여 자동트랙킹을 하기 위한 근거가 되는 직류(DC) 엔벨로프 신호의 레벨을 높임으로써, 장시간 모드에서도 자동트랙킹을 정상적으로 수행할 수 있다.The present invention relates to an automatic tracking optimization circuit according to a regeneration mode. In particular, an amplifier for amplifying a regenerated signal reproduced at a head to 60 dB, a color trap unit for filtering a color signal at the output of the heavy amplifier, and the color trap An operational amplifier for amplifying the negative output according to the applied DC value, a DC output unit for lowering the DC value applied to the operational amplifier in a long time mode, a detector for detecting only an envelope signal at the output of the operational amplifier, and the detection unit It is composed of a buffer for latching the output of the output to the output, by lowering the DC suppression applied to the operational amplifier during long-term mode (EP) playback by raising the level of the direct current (DC) envelope signal for the automatic tracking, Auto tracking can be normally performed even in long time mode.

Description

Auto-tracking optimizer according to playback mode

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

제1도는 종래의 재생 모드에 따른 오토-트래킹 최적화 장치의 회로도.1 is a circuit diagram of an auto-tracking optimization device according to a conventional regeneration mode.

제2도는 본 발명에 따른 재생 모드에 따른 오토-트래킹 최적화 장치의 회로도.2 is a circuit diagram of an auto-tracking optimization device according to a regeneration mode according to the present invention.

Claims

An amplifier for amplifying a reproduction signal reproduced by the head to 60 dB, a color trap unit for filtering a color signal at the output of the heavy amplifier, an operational amplifier for amplifying the output of the color trap unit according to an applied DC value, and a reproduction mode And a DC output section for varying the DC value applied to the operational amplifier, a detector for detecting only an envelope signal at the output of the operational amplifier, and a buffer for temporarily latching and outputting the output of the detector. Haute-tracking optimization device accordingly.

According to claim 1, wherein the DC output unit, the transistor is turned on / off in accordance with the regeneration mode (EP, SP), coupled in parallel with the resistor (R3) and the resistor (R3) connected to the collector terminal of the transistor Comprising resistors R1 and R2, one side of the resistor R1 is connected to a power supply terminal B +, one side of the resistor R2 is connected to a ground terminal, and the contacts of the resistors R1-R3 are connected to each other. Haute-tracking optimization device according to the playback mode characterized in that the operational amplifier is connected to.

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