KR970050639A - Digital recorder - Google Patents

Digital recorder Download PDF

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Publication number
KR970050639A
KR970050639A KR1019950058927A KR19950058927A KR970050639A KR 970050639 A KR970050639 A KR 970050639A KR 1019950058927 A KR1019950058927 A KR 1019950058927A KR 19950058927 A KR19950058927 A KR 19950058927A KR 970050639 A KR970050639 A KR 970050639A
Authority
KR
South Korea
Prior art keywords
speed
clock
data
playback mode
drum
Prior art date
Application number
KR1019950058927A
Other languages
Korean (ko)
Other versions
KR0179133B1 (en
Inventor
최만출
Original Assignee
구자홍
Lg 전자주식회사
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 구자홍, Lg 전자주식회사 filed Critical 구자홍
Priority to KR1019950058927A priority Critical patent/KR0179133B1/en
Publication of KR970050639A publication Critical patent/KR970050639A/en
Application granted granted Critical
Publication of KR0179133B1 publication Critical patent/KR0179133B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
    • G11B15/473—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads
    • G11B15/4731—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads control of headwheel rotation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B2020/1476—Synchronisation patterns; Coping with defects thereof
    • G11B2020/148—Synchronisation patterns; Coping with defects thereof using error detecting or error correcting codes

Abstract

본 발명은 1배속으로 기록된 트랙 재생시 드럼 속도를 소정배속으로 증가시켜 동일트랙을 소정 횟수 읽도록 하여 정확하게 검출하는 디지탈 기록재생 장치에 관한 것으로서, 특히, 테이프의 재생시 테이프의 늘어짐 유무에 따라 캡스턴 모터는 동일 속도로 회전시키면서 드럼을 1배속 또는 N배속으로 회전시켜 동일 트랙을 N회 반복하여 트레이스하고 그중 가장 양호한 데이타를 선택 출력함으로써, 데이타를 정확하게 검출하여 데이타의 신뢰도를 높이며 폭이 좁은 협트랙에 유리하다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital recording and reproducing apparatus which accurately detects the same track by reading a predetermined number of times by reproducing a drum speed at a predetermined speed when reproducing a track recorded at 1x speed. The capstan motor rotates the drum at 1x speed or Nx speed while rotating at the same speed, repeats the same track N times, and selects and outputs the best data among them, thereby accurately detecting the data and increasing the reliability of the data. Favorable to the track.

Description

디지탈 기록 재생장치Digital recorder

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

제9도는 본 발명에 따른 디지탈 기록 재생 장치의 재생 블럭도.9 is a reproduction block diagram of a digital recording / reproducing apparatus according to the present invention.

제10a도는 본 발명에 따른 신호기록시에 대응하여 환경온도변화가 없는 경우의 신호재생시 트랙킹 상태도.10A is a tracking state diagram when reproducing a signal when there is no change in environmental temperature in response to signal recording according to the present invention.

제10b도는 본 발명에 따른 신호기록시에 대응하여 환경온도변화가 있는 경우의 신호재생시 트랙킹 상태도.10B is a tracking state diagram during signal reproduction when there is a change in environmental temperature in correspondence with signal recording in accordance with the present invention.

Claims (1)

테이프의 재생시 테이프의 늘어짐 유무에 따라 드럼을 1배속으로 재생할 것인지 N(N은 자연수)배속으로 재생할 것인지를 선택하는 재생모드 선택부와, 발진에 의해 1배속의 클럭 신호를 발생하는 발진부와, 상기 발진부에서 발생된 1배속의 클럭을 N배속의 클럭으로 분주하는 분주기와, 상기 재생모드 선택부의 제어에 따라 스위칭되어 상기 발진부에서 발생된 1배속 클럭을 선택 출력하거나 분주기에서 발생되는 N배속 클럭을 선택 출력하는 스위칭부와, 상기 발진부에서 발생되는 1배속 클럭에 동기되어 테이프에 기록된 신호를 회전 드럼상에 배치된 헤드를 통해 재생하여 증폭하는 재생 증폭부와, 상기 재생 증폭부에서 증폭된 재생 신호에서 디지탈 데이타를 검출하여 에러를 정정하는 과정을 상기 스위칭부의 출력에 따라 현재 데이타 전송 비트율의 N배로 처리하는 복조 및 에러정정부와, 상기 스위칭부의 출력에 따라 상기 복조 및 에러 정정부를 통해 출력되는 동일 트랙을 N배속으로 주행하여 읽은 N개의 동일 데이타중 에러가 나지 않은 데이타를 선택 출력하는 데이타 선택부와, 상기 발진부에서 제공되는 1배속 클럭에 동기되어 상기 데이타 선택부에서 선택된 데이타를 기록시와 동일한 디지탈 데이타로 변환하는 디포맷터와, 1배속 재생모드 또는 N배속 재생 모드에 상관없이 상기 발진부에서 발생하는 1배속 클럭에 동기되어 캡스턴 모터의 속도를 동일하게 제어하고 콘트롤 트랙을 통해 검출된 테이프의 위상을 제어하는 캡스턴 제어수단과, 상기 재생모드 선택부의 1배속 재생모드 또는 N배속 재생모드에 따라 동일 트랙에 대해 드럼을 N배속으로 회전시키는 드럼 배속 제어수단으로 구성되는 디지탈 기록재생 장치.A playback mode selection section for selecting whether to play the drum at 1x speed or N (N is a natural number) speed according to whether the tape is stretched or not, and an oscillator for generating a clock signal at 1x speed by oscillation; A divider for dividing the clock of 1x generated by the oscillator into a clock of Nx and the switching of the reproduction mode selector to select and output the 1x clock generated by the oscillator or to generate an Nx speed generated by the divider. A switching unit for selecting and outputting a clock, a reproducing amplifier unit reproducing and amplifying a signal recorded on a tape in synchronization with a 1x clock generated by the oscillation unit through a head disposed on a rotating drum; Detecting digital data from the reproduced reproduction signal and correcting an error according to the output of the switching unit. Demodulation and error correction processing at N times, and outputting the error-free data among N identical data read by driving the same track output through the demodulation and error correction unit at N times according to the output of the switching unit. A deformatter for converting the data selected by the data selector into the same digital data as at the time of recording in synchronization with the data selector provided by the oscillation unit, regardless of the 1x playback mode or the Nx playback mode. Capstan control means for equally controlling the speed of the capstan motor and controlling the phase of the tape detected through the control track in synchronization with the 1x clock generated by the oscillator; and 1x playback mode or Nx speed playback mode of the playback mode selector. Consisting of a drum speed control means for rotating the drum at the Nx speed for the same track according to Digital recording and playback device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950058927A 1995-12-27 1995-12-27 Digital recording and reproducting apparatus KR0179133B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950058927A KR0179133B1 (en) 1995-12-27 1995-12-27 Digital recording and reproducting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950058927A KR0179133B1 (en) 1995-12-27 1995-12-27 Digital recording and reproducting apparatus

Publications (2)

Publication Number Publication Date
KR970050639A true KR970050639A (en) 1997-07-29
KR0179133B1 KR0179133B1 (en) 1999-04-15

Family

ID=19445141

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950058927A KR0179133B1 (en) 1995-12-27 1995-12-27 Digital recording and reproducting apparatus

Country Status (1)

Country Link
KR (1) KR0179133B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100643136B1 (en) * 2004-12-28 2006-11-10 위니아만도 주식회사 Kim-chi storage has a vacuum insulation sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100643136B1 (en) * 2004-12-28 2006-11-10 위니아만도 주식회사 Kim-chi storage has a vacuum insulation sheet

Also Published As

Publication number Publication date
KR0179133B1 (en) 1999-04-15

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