KR880011756A - 트렉 카운트 장치 - Google Patents

트렉 카운트 장치 Download PDF

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Publication number
KR880011756A
KR880011756A KR1019880003155A KR880003155A KR880011756A KR 880011756 A KR880011756 A KR 880011756A KR 1019880003155 A KR1019880003155 A KR 1019880003155A KR 880003155 A KR880003155 A KR 880003155A KR 880011756 A KR880011756 A KR 880011756A
Authority
KR
South Korea
Prior art keywords
track
tracking signal
trek
count device
frequency
Prior art date
Application number
KR1019880003155A
Other languages
English (en)
Inventor
세이지 고바야시
기요시 오사또
Original Assignee
원본미기재
소니 가부시끼 가이샤
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 원본미기재, 소니 가부시끼 가이샤 filed Critical 원본미기재
Publication of KR880011756A publication Critical patent/KR880011756A/ko

Links

Classifications

    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

내용 없음

Description

트렉 카운트 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 의한 트렉 카운트 장치의 원리적 구상을 도시하는 블록도.
제2도는 본 발명에 의한 트랙 카운트 장치의 제1실시예를 도시하는 블록도.
제3도는 제2도의 2상 검출 신호 형성 회로의 상세구성을 도시하는 접속도.

Claims (1)

  1. 기록 트랙상에 이산적으로 형성된 트랙 정보를 샘플링함으로서 주기적으로 트렉 횡단 정보를 얻으며, 상기 트렉 횡단 정보에 기준해서 광헤드가 횡단한 기록 트렉 수를 카운트하도록된 트렉 카운트 장치에 있어서, 상기 트렉 횡단 정보의 주파수 내지 위상에 추종하도록 주파수 내지 위상이 변화하는 추종 신호를 발행하는 추종 신호 발생 회로를 가지며 상기 추종 신호에 기준해서 상기 광헤드가 횡단한 기록 트렉 수를 카운트하는 것을 특징으로 하는 트랙 카운트 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880003155A 1987-03-25 1988-03-24 트렉 카운트 장치 KR880011756A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62072831A JPS63237269A (ja) 1987-03-25 1987-03-25 トラツクカウント装置
JP72831 1987-03-25

Publications (1)

Publication Number Publication Date
KR880011756A true KR880011756A (ko) 1988-10-31

Family

ID=13500754

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880003155A KR880011756A (ko) 1987-03-25 1988-03-24 트렉 카운트 장치

Country Status (6)

Country Link
US (1) US5023855A (ko)
EP (1) EP0284423B1 (ko)
JP (1) JPS63237269A (ko)
KR (1) KR880011756A (ko)
AT (1) ATE94677T1 (ko)
DE (1) DE3884027T2 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02149932A (ja) * 1988-11-30 1990-06-08 Victor Co Of Japan Ltd 光ディスク読取装置
US5193081A (en) * 1989-02-28 1993-03-09 Kabushiki Kaisha Toshiba Track-accessing controller for optical disks
DE3916462A1 (de) * 1989-05-20 1990-11-22 Thomson Brandt Gmbh Verfahren zum spurspringen
JP2630151B2 (ja) * 1992-01-30 1997-07-16 日本ビクター株式会社 光ディスク装置
US5689485A (en) * 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method
JPH11232662A (ja) * 1998-02-13 1999-08-27 Pioneer Electron Corp 記録情報読取方法及び記録情報再生装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210102A (en) * 1975-07-15 1977-01-26 Canon Inc Recording medium
US4405956A (en) * 1981-04-22 1983-09-20 Xerox Corporation Tracking apparatus for read/write head
US4402061A (en) * 1981-10-15 1983-08-30 Burroughs Corporation Preformatted optical media for use in an optical memory system
KR880000999B1 (ko) * 1981-11-25 1988-06-10 미쓰다 가쓰시게 광학적 정보 기억장치
JPS5897138A (ja) * 1981-12-04 1983-06-09 Hitachi Ltd 光スポットの位置検出方法及び光スポットの位置制御装置
USRE32937E (en) * 1982-03-19 1989-05-30 Magnetic Peripherals, Inc. Modulation system for optical recording
FR2528605B1 (fr) * 1982-06-15 1987-11-20 Thomson Csf Procede et dispositif optique de focalisation d'un faisceau d'energie lumineuse sur un plan de reference d'un support d'information ainsi que ce support
WO1984003583A1 (en) * 1983-03-07 1984-09-13 Storage Technology Partners System for sensing the rotational position of a rotating disk having coarse seek tracks
JP2510410B2 (ja) * 1983-10-27 1996-06-26 パイオニア株式会社 デイスクプレ−ヤの情報選択装置
US4740940A (en) * 1985-03-11 1988-04-26 Matsushita Electric Industrial Co., Ltd. Optical information read apparatus
FR2597248B1 (fr) * 1985-11-27 1988-05-13 Thomson Alcatel Gigadisc Support d'information a pregravure et son dispositif d'exploration optiques a acces echantillonne

Also Published As

Publication number Publication date
ATE94677T1 (de) 1993-10-15
DE3884027T2 (de) 1994-02-03
DE3884027D1 (de) 1993-10-21
EP0284423B1 (en) 1993-09-15
EP0284423A3 (en) 1990-05-02
JPS63237269A (ja) 1988-10-03
EP0284423A2 (en) 1988-09-28
US5023855A (en) 1991-06-11

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Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application