KR920015277A - Auto Track Filing Circuit - Google Patents

Auto Track Filing Circuit Download PDF

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Publication number
KR920015277A
KR920015277A KR1019910000916A KR910000916A KR920015277A KR 920015277 A KR920015277 A KR 920015277A KR 1019910000916 A KR1019910000916 A KR 1019910000916A KR 910000916 A KR910000916 A KR 910000916A KR 920015277 A KR920015277 A KR 920015277A
Authority
KR
South Korea
Prior art keywords
signal
head
output
agc amplifier
track
Prior art date
Application number
KR1019910000916A
Other languages
Korean (ko)
Other versions
KR960013000B1 (en
Inventor
안홍조
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 KR1019910000916A priority Critical patent/KR960013000B1/en
Publication of KR920015277A publication Critical patent/KR920015277A/en
Application granted granted Critical
Publication of KR960013000B1 publication Critical patent/KR960013000B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Digital Magnetic Recording (AREA)

Abstract

내용 없음No content

Description

오토트랙 화인딩회로Auto Track Filing Circuit

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

제2도는 본 발명에 의한 AGC(auto gain control)를 이용한 ATF회로 구성의 일실시예를 도시한 구성블럭도, 제3도는 제2도에 도시한 AGC증폭부의 상세회로도이다.FIG. 2 is a block diagram showing an embodiment of the ATF circuit configuration using AGC (auto gain control) according to the present invention. FIG. 3 is a detailed circuit diagram of the AGC amplifier shown in FIG.

Claims (1)

로타리타입 디지탈 오디오 테이프 레코더에서 RF신호가 BPF를 거쳐 동기 신호가 필터링되고, RF신호가 LPF를 거쳐 파일럿트신호가 필터링 되며, 상기 동기 신호 및 파일럿트신호를 샘플링펄스발생부로 보내고 상기 파일럿트신호를 포락선 검파한 후 샘플앤드홀드부로 보내어 상기 샘플링펄스발생부로부터의 출력신호와 파일럿트레벨을 비교하여 ATF에러신호를 발생하는 ATF회로에 있어서, 상기 파일럿트신호를 받아 들여 자동이득 제어 증폭하는 AGC 증폭부와; 상기 AGC 증폭부로부터 출력된 신호를 포락선 검파하는 포락선 검파기와; 사이 포락선 검파된 신호가 헤드별로 구별되어 선택되는 스위칭 회로와; 상기 스위칭회로에서 선택된 출력을 헤드별로 받아들여 상기 AGC증폭부로 이득제어신호를 공급하는 제1및 제2 LPF를 포함하고 있으며. 상기 스위칭회로는 헤드절환펄스에 의해 A헤드가 A트랙을 주사하고 있는 동안에는 제1LPF 출력을 AGC 증폭부에 피이드백시키고, B헤드가 B트랙을 주사하고 있는 동안에는 제2LPF 출력을 AGC증폭부에 피이드백시키는 것을 특징으로 하는 오토트랙 화인딩회로.In a rotary type digital audio tape recorder, an RF signal is filtered through a BPF, and a synchronous signal is filtered through an RF signal, and an RF signal is filtered through an LPF, and the synchronous signal and the pilot signal are sent to a sampling pulse generator. In the ATF circuit that detects an envelope and sends it to the sample and hold section, and compares the output signal from the sampling pulse generator and the pilot level to generate an ATF error signal, an AGC amplifying section that receives the pilot signal and automatically gains control amplification. Wow; An envelope detector for detecting the signal output from the AGC amplifier; A switching circuit in which an envelope-detected signal is selected for each head; And first and second LPFs for receiving the output selected by the switching circuit for each head and supplying a gain control signal to the AGC amplifier. The switching circuit feeds the first LPF output to the AGC amplifier while the head A is scanning the A track by the head switching pulse, and feeds the second LPF output to the AGC amplifier while the B head is scanning the B track. An auto track pointing circuit, characterized in that the backing. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910000916A 1991-01-19 1991-01-19 Auto-track finding circuit KR960013000B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910000916A KR960013000B1 (en) 1991-01-19 1991-01-19 Auto-track finding circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910000916A KR960013000B1 (en) 1991-01-19 1991-01-19 Auto-track finding circuit

Publications (2)

Publication Number Publication Date
KR920015277A true KR920015277A (en) 1992-08-26
KR960013000B1 KR960013000B1 (en) 1996-09-25

Family

ID=19310081

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910000916A KR960013000B1 (en) 1991-01-19 1991-01-19 Auto-track finding circuit

Country Status (1)

Country Link
KR (1) KR960013000B1 (en)

Also Published As

Publication number Publication date
KR960013000B1 (en) 1996-09-25

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