KR880011746A - 광학식디스크 재생장치 - Google Patents

광학식디스크 재생장치 Download PDF

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Publication number
KR880011746A
KR880011746A KR1019880002815A KR880002815A KR880011746A KR 880011746 A KR880011746 A KR 880011746A KR 1019880002815 A KR1019880002815 A KR 1019880002815A KR 880002815 A KR880002815 A KR 880002815A KR 880011746 A KR880011746 A KR 880011746A
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KR
South Korea
Prior art keywords
peak level
level
signal
peak
storing
Prior art date
Application number
KR1019880002815A
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English (en)
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KR920000420B1 (ko
Inventor
하루히사 도모다
야스오미 시마다
Original Assignee
다니이 아끼오
마쯔시다덴기산교 가부시기가이샤
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Publication of KR880011746A publication Critical patent/KR880011746A/ko
Application granted granted Critical
Publication of KR920000420B1 publication Critical patent/KR920000420B1/ko

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    • 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
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/60—Solid state media
    • G11B2220/65—Solid state media wherein solid state memory is used for storing indexing information or metadata

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

내용 없음

Description

광학식디스크 재생장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본명의 일실시예에 의한 광학디스크 재생장치의 블록도.
제2도는 동요부 블록도.
제3도는 동외관 사시도.

Claims (5)

  1. 디스크상에 기록된 연주시간정보나 음악신호를 검출하는 신호검출부와, 신호검출부에서 검출된 신호를 출력하는 신호출력부와, 음악신호의 레벨을 입력하는 신호레벨입력수단과, 음악신호의 피이크레벨을 기억하는 피이크레벨기억부와, 피이크레벨의 신호가 기록되어 있는 위치를 기억하는 피이크레벨 위치기억부와, 피이크레벨기억부에 기억되어 있는 레벨과, 신호레벨입력수단에 의해 입력된 레벨을 비교하는 비교수단과, 이 비교수단이 비교한 결과에 따라서 피이크레벨기억부의 값과 피이크레벨 위치기억부의 값을 경신하는 경신수단과, 미리 정해진 기준치를 기억하는 기준치기억부와, 이 기준치기억부에 기억된 기준치와 피이크레벨 조탐색 모우드에 의해 피이크레벨 위치기억부에 기억된 피이크레벨위치로부터 더욱 정확한 피이크레벨위치를 검출하기 위한 피이크레벨 정밀 탐색 개시위치와 피이크레벨 정밀 탐색 종료위치와, 피이크레벨 정밀 탐색 모우드에 의해 검출한 피이크레벨위치와 기준치기억부에 기억된 기준치로부터 피이크레벨 일시중지 위치를 계산하는 피이크레벨 검출 연산부와, 피이크레벨 검출 연산부에 의해 계산된 각각의 값을 기억하는 정밀 탐색 개시 위치기억부와 정밀 탐색 종료 위치기억부와 일시중지 위치기억부를 구비하여 이루어진 광학식 디스크 재생장치.
  2. 내용 없음
  3. 제1항에 있어서, 피이크레벨 검출 연산부에 의해 계산된 피이크레벨 일시중지 위치에서, 음악신호를 신호출력부로부터 출력하면서 일시중지 상태가 되는 기능을 가진 광학식 디스크 재생장치.
  4. 제1항에 있어서, 피이크레벨위치검출 후, 그 위치의 앞뒤 m초간(m은 임의로 설정가능)을 반복하여 연주하는 기능을 가진 광학식디스크 재생장치.
  5. 디스크상에 기록된 연주시간정보나 음악신호를 검출하는 신호검출부와, 신호검출부에서 검출된 신호를 출력하는 신호출력부와, 음악신호의 레벨을 입력하는 신호레벨입력수단과, 음악신호의 피이크레벨을 기억하는 피이크레벨기억부와, 피이크레벨의 신호가 기록되어 있는 위치를 기억하는 피이크레벨위치기억부와, 피이크레벨기억부에 기억되어 있는 레벨과, 신호레벨입력수단에 의해 입력된 레벨을 비교하는 비교수단과, 이 비교수단이 비교한 결과에 따라서 피이크레벨기억부의 값과 피이크레벨위치기억부의 값을 경신하는 경신수단과, 디스크 전체 도는 디스크상의 임의의 구간에 걸처서, 수개 트랙점프마다 상기 입력수단과 상기 비교 수단과 상기 경신수단을 사용해서 음악신호의 피이크레벨을 비교하여 경신을 반복하면서 디스크상의 전체 또는 디스크상의 임의의 구간의 음악신호의 피이크레벨과 그 기록위치를 검출하는 피이크레벨 조탐색 모우드와, 피이크레벨 조탐색 모우드에 의한 검색결과에 의거해서 그 검출된 피이크레벨의 기록 위치에 앞뒤에서 더욱 정확한 피이크레위치를 검출하기 위한 피이크레벨 정밀 탐색 모우드를 행하도록 제어하는 제어수단을 구비하여 이루어진 광학식 디스크 재생장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880002815A 1987-03-20 1988-03-17 광학식 디스크 재생장치 KR920000420B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP87-66431 1987-03-20
JP62-66431 1987-03-20
JP62066431A JP2687340B2 (ja) 1987-03-20 1987-03-20 光学式デイスク再生装置

Publications (2)

Publication Number Publication Date
KR880011746A true KR880011746A (ko) 1988-10-31
KR920000420B1 KR920000420B1 (ko) 1992-01-13

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Application Number Title Priority Date Filing Date
KR1019880002815A KR920000420B1 (ko) 1987-03-20 1988-03-17 광학식 디스크 재생장치

Country Status (6)

Country Link
US (1) US5008872A (ko)
EP (1) EP0283304B1 (ko)
JP (1) JP2687340B2 (ko)
KR (1) KR920000420B1 (ko)
CN (1) CN1014658B (ko)
DE (1) DE3882257T2 (ko)

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Also Published As

Publication number Publication date
EP0283304B1 (en) 1993-07-14
KR920000420B1 (ko) 1992-01-13
CN1014658B (zh) 1991-11-06
DE3882257D1 (de) 1993-08-19
JP2687340B2 (ja) 1997-12-08
EP0283304A2 (en) 1988-09-21
US5008872A (en) 1991-04-16
DE3882257T2 (de) 1993-10-28
JPS63231784A (ja) 1988-09-27
EP0283304A3 (en) 1990-04-11
CN88101865A (zh) 1988-10-05

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