KR950001695A - 디스크 재생장치 - Google Patents

디스크 재생장치 Download PDF

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Publication number
KR950001695A
KR950001695A KR1019940013400A KR19940013400A KR950001695A KR 950001695 A KR950001695 A KR 950001695A KR 1019940013400 A KR1019940013400 A KR 1019940013400A KR 19940013400 A KR19940013400 A KR 19940013400A KR 950001695 A KR950001695 A KR 950001695A
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South Korea
Prior art keywords
disc
optical head
memory
recording medium
data
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KR1019940013400A
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English (en)
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다츠토 스에토미
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오오가 노리오
소니 가부시끼가이샤
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Publication of KR950001695A publication Critical patent/KR950001695A/ko

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/24—Arrangements for providing constant relative speed between record carrier and head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10595—Control of operating function
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

본 발명의 주요 목적은 상기의 문제들을 해결하는 디스크형 기록매체에 대한 재생장치를 제공하는 것이다.
본 발명에 따른 디스크 재생장치는 디스크형 기록매체상에 기록된 데이터를 판독하기 위해 디스크형 기록매체상에 광빔을 방사하는 광학헤드와, 광학헤드의 출력신호에 기초하여 발생된 에러신호에 기초하여 광학헤드와 스핀들모터를 서보제어하는 서보수단과, 디코더의 출력데이터를 일시적으로 저장하고, 메모리에 저장된 데이터는 디코더에서 출력된 데이터의 쓰기율보다 낮은 판독율로 판독되는 메모리와, 광학헤드와 메모리를 제어하므로 디스크형 기록매체상에 기록된 데이터가 광학헤드에 의해 읽혀지고 메모리에서 쓰여지는 동안의 제1주기와 디스크형 기록매체상에 기록된 데이터의 판독이 광학헤드에 의해 비연속적이고, 단지 메모리에 저장된 데이터의 출력만이 만들어지는 동안의 제2주기를 교대로 세팅함으로써, 디스크형 기록매체상에 기록된 데이터가 간헐적으로 판독되어 제2주기동안 서보수단의 동작을 중단하는 제어수단으로 구성되어 있는 것을 특징으로 한다.

Description

디스크 재생장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 실시예에 따른 기록/재생장치를 나타내는 블럭다이어그램이다. 제2도는 제1도에 나타낸 장치에 대한 제어동작을 도시하는 플로우챠트이다.

Claims (10)

  1. 디스크형 기록매체상에 기록된 데이터를 판독하기 위해 디스크형 기록매체상에 광빔을 방사하는 광학헤드와, 광학헤드의 출력신호에 기초하여 발생된 에러신호에 기초하여 광학헤드와 스핀들모터를 서보제어하는 서보수단과, 디코더의 출력데이터를 일시적으로 저장하고, 메모리에 저장된 데이터는 디코더에서 출력된 데이터의 쓰기율보다 낮은 판독율로 판독되는 메모리와, 광학헤드와 메모리를 제어하므로 디스크형 기록매체상에 기록된 데이터가 광학헤드에 의해 읽혀지고 메모리에서 쓰여지는 동안의 제1주기와 디스크형 기록매체상에 기록된 데이터의 판독이 광학헤드에 의해 비연속적이고, 단지 메모리에 저장된 데이터의 출력만이 만들어지는 동안의 제2주기를 교대로 세팅함으로써, 디스크형 기록매체상에 기록된 데이터가 간헐적으로 판독되어 제2주기동안 서보수단의 동작을 중단하는 제어수단으로 구성되어 있는 것을 특징으로 하는 디스크 재생장치.
  2. 제1항에 있어서, 제어수단은 상기 광학헤드에서 독출된 데이타의 상기 메모리에서 쓰기와 상기 메모리에 저장된 데이타의 독출을 제어하는 메모리제어부를 포함하고, 상기 메모리 제어부가 상기 메모리에 저장된 데이타량이 소정량보다 크다고 검지할 때 제어수단은 상기 서보수단의 서보동작과 상기 광학헤드의 독출동작을 재개시하는 제어신호를 발하도록 구성된 것을 특징으로 하는 디스크 재생장치.
  3. 제1항에 있어서, 일정선속도로 상기 디스크형 기록매체를 회전하며 구동하는 회전구동수단과, 상기 회전구동수단을 제어하는 제어수단을 포함하므로 상기 디스크형 기록매체는 일정 각 속도로 상기 제2주기동안 회전되도록 구성되어 있는 것을 특징으로 하는 디스크 재생장치.
  4. 압축된 형태로 기록된 디지탈 오디오신호를 가지는 디스크형 기록매체에 대한 재생장치에 있어서, 디스크형 기록매체상에 기록된 데이터를 판독하기 위해 디스크형 기록매체상에 광빔을 방사하는 광학헤드와, 회전하면서 연속 선속도로 디스크형 기록매체를 구동하는 스핀들모터와, 광학헤드의 출력신호에 기초하여 발생된 에러신호에 기초하여 광학헤드와 스핀들모터를 서보제어하는 서보수단과, 광학헤드의 출력신호를 디코드하는 디코딩수단과, 디코더의 출력데이터를 일시적으로 저장하고, 메모리에 저장된 데이터는 디코더에서 출력된 데이터의 쓰기율보다 낮은 판독율로 판독되는 메모리와, 광학헤드와 메모리를 제어하므로 디스크형 기록매체상에 기록된 데이터가 광학헤드에 의해 읽혀지고 메모리에 쓰여지는 동안의 제1주기와 디스크형 기록매체상에 기록된 데이터의 판독이 광학헤드에 의해 비연속적이고, 단지 메모리에 저장된 데이터의 출력만이 만들어지는 동안의 제2주기를 교대로 세팅함으로써, 디스크형 기록매체상에 기록된 데이터가 간헐적으로 판독되고, 제2주기동안 서보수단의 동작을 중단하는 제어수단으로 구성되어 있는 것을 특징으로 하는 디스크 재생장치.
  5. 제4항에 있어서, 제어수단은 상기 광학헤드에서 독출된 데이타의 상기 메모리에서 쓰기와 상기 메모리에 저장된 데이타의 독출을 제어하는 메모리제어부를 포함하고 상기 메모리 제어부가 상기 메모리에 저장된 데이타량이 소정량보다 크다고 검지할때 제어수단은 상기 서보수단의 서보동작과 상기 광학헤드의 독출동작을 재개시하는 제어신호를 발하도록 구성된 것을 특징으로 하는 디스크 재생장치.
  6. 제4항에 있어서, 상기 제어수단은 상기 회전구동수단을 제어하므로 디스크형 기록매체는 일정 각속도로 상기 제2주기동안 회전되도록 구성되어 있는 것을 특징으로 하는 디스크 재생장치.
  7. 제4항에 있어서, 상기 제어수단은 상기 제2주기동안 상기 디코딩수단에 클럭신호의 공급을 중단하도록 구성되어 있는 것을 특징으로 하는 디스크 재생장치.
  8. 제4항에 있어서, 상기 제어수단은 광학헤드를 제어하므로 상기 제2주기동안 광학헤드가 중지상태에 있도록 구성되어 있는 것을 특징으로 하는 디스크 재생장치.
  9. 제4항에 있어서, 상기 제어수단은 디스크형 기록매체상에서 광빔을 방사하는 광원을 포함하고, 제2주기동안 디스크형 기록매체상에 방사된 광빔의 출력레벨이 상기 서보수단에 의한 서보제어에 필요한 레벨로 하도록 구성되어 있는 것을 특징으로 하는 디스크 재생장치.
  10. 압축된 형태로 기록된 디지탈 오디오신호를 가지는 디스크형 기록매체에 대한 재생장치에 있어서, 디스크형 기록매체상에 기록된 데이터를 판독하기 위해 디스크형 기록매체상에 광빔을 방사하는 광학헤드와,회전하면서 연속 선속도로 디스크형 기록매체를 구동하는 스핀들모터와, 포커스에러신호, 트래킹에러신호 및 광학헤드의 출력신호에 기초하여 스핀들 서보신호를 발생하는 신호를 발생하는 에러신호발생수단과, 에러신호발생부에 의해 각각 출력된 포커스에러 신호, 트래킹에러신호, 스핀들 서보신호를 발생하는 신호에 기초하여 포커스 서보신호, 트래킹 서보신호 및 스핀들 서보신호를 발생하고 포커스 서보신호와 트래킹 서보신호를 광학헤드에 보내어 포커스서보와 트래킹서보를 하고 또한 스핀들 서보신호를 스핀들모터에 보내어 스핀들서보를 하는 서보수단과, 광학헤드의 출력신호를 디코드하는 디코딩수단과, 디코더의 출력데이터를 일시적으로 저장하고, 메모리에 저장된 데이터는 디코더에서 출력된 데이터의 쓰기율보다 낮은 판독율로 판독되는 메모리와, 광학헤드와 메모리를 제어하므로 디스크형 기록매체상에 기록된 데이터가 광학헤드에 의해 읽혀지고 메모리에서 쓰여지는 동안의 제1주기와 디스크형 기록매체상에 기록된 데이터의 판독이 광학헤드에 의해 비연속적이고, 단지 메모리에 저장된 데이터의 출력만이 만들어지는 동안의 제2주기를 교대로 세팅함으로써, 디스크형 기록매체상에 기록된 데이터가 간헐적으로 판독되고, 제2주기동안 서보제어기의 동작을 중단하는 제어수단으로 구성되어 있는 것을 특징으로 하는 디스크 재생장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940013400A 1993-06-18 1994-06-14 디스크 재생장치 KR950001695A (ko)

Applications Claiming Priority (2)

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JP93-147648 1993-06-18
JP14764893 1993-06-18

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KR950001695A true KR950001695A (ko) 1995-01-03

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US (1) US5740143A (ko)
EP (1) EP0630004B1 (ko)
KR (1) KR950001695A (ko)
DE (1) DE69418534T2 (ko)

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EP0630004A2 (en) 1994-12-21
US5740143A (en) 1998-04-14
EP0630004B1 (en) 1999-05-19
DE69418534D1 (de) 1999-06-24
EP0630004A3 (en) 1995-06-21
DE69418534T2 (de) 1999-09-16

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