FR2505536A1 - Appareil de lecture d'informations optiques notamment sur un disque - Google Patents

Appareil de lecture d'informations optiques notamment sur un disque Download PDF

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Publication number
FR2505536A1
FR2505536A1 FR8208095A FR8208095A FR2505536A1 FR 2505536 A1 FR2505536 A1 FR 2505536A1 FR 8208095 A FR8208095 A FR 8208095A FR 8208095 A FR8208095 A FR 8208095A FR 2505536 A1 FR2505536 A1 FR 2505536A1
Authority
FR
France
Prior art keywords
signal
optical
trace
tracks
error signal
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR8208095A
Other languages
English (en)
French (fr)
Other versions
FR2505536B1 (en, 2012
Inventor
Kazuhiko Fujiie
Chiaki Nonaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of FR2505536A1 publication Critical patent/FR2505536A1/fr
Application granted granted Critical
Publication of FR2505536B1 publication Critical patent/FR2505536B1/fr
Granted legal-status Critical Current

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
    • G11B7/085—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
    • 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
    • G11B7/08511—Methods for track change, selection or preliminary positioning by moving the head with focus pull-in only
    • 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
    • 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
    • G11B7/0901—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 for track following only
    • G11B7/0903—Multi-beam tracking systems
    • 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
    • G11B7/0908—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 for focusing only
    • G11B7/0909—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 for focusing only by astigmatic methods

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
FR8208095A 1981-05-11 1982-05-10 Appareil de lecture d'informations optiques notamment sur un disque Granted FR2505536A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56070416A JPS57186239A (en) 1981-05-11 1981-05-11 Disc reproducing device

Publications (2)

Publication Number Publication Date
FR2505536A1 true FR2505536A1 (fr) 1982-11-12
FR2505536B1 FR2505536B1 (en, 2012) 1985-03-22

Family

ID=13430840

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8208095A Granted FR2505536A1 (fr) 1981-05-11 1982-05-10 Appareil de lecture d'informations optiques notamment sur un disque

Country Status (6)

Country Link
US (1) US4497047A (en, 2012)
JP (1) JPS57186239A (en, 2012)
KR (1) KR880002326B1 (en, 2012)
DE (1) DE3217701A1 (en, 2012)
FR (1) FR2505536A1 (en, 2012)
GB (1) GB2100033B (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520543A1 (fr) * 1982-01-24 1983-07-29 Sony Corp Appareil de lecture optique d'un support d'enregistrement tel qu'un disque
EP0335344A3 (en) * 1988-03-29 1990-10-31 Toray Silicone Company, Limited Transparent flame-retardant silicone rubber compositions

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531158A (en) * 1982-01-27 1985-07-23 Hitachi, Ltd. Automatic focusing system for video cameras
DE3367134D1 (en) * 1982-05-31 1986-11-27 Hitachi Ltd Servo circuit for a signal reproducing apparatus
JPH0677326B2 (ja) * 1982-07-24 1994-09-28 パイオニア株式会社 情報読取装置のフォ−カスサ−ボ装置
JPS5977638A (ja) * 1982-10-26 1984-05-04 Nippon Gakki Seizo Kk 光学式デイスク再生装置におけるフオ−カスサ−ボ制御装置
JPS59116942A (ja) * 1982-12-23 1984-07-06 Olympus Optical Co Ltd オ−トフォ−カス装置
JPS59116939A (ja) * 1982-12-23 1984-07-06 Olympus Optical Co Ltd 光学式記録再生装置
JPS60261035A (ja) * 1984-06-06 1985-12-24 Matsushita Electric Ind Co Ltd 光学式情報記録再生装置
JPS61177642A (ja) * 1985-01-31 1986-08-09 Olympus Optical Co Ltd 光学的情報記録再生装置
US5020045A (en) * 1988-12-19 1991-05-28 Eastman Kodak Company Focus acquisition servo system and associated method
JP3072767B2 (ja) * 1990-07-24 2000-08-07 パイオニア株式会社 光学式ディスクプレーヤ
US5216562A (en) * 1990-09-25 1993-06-01 International Business Machines Corporation Multi-beam optical recording system and method
JP2531847B2 (ja) * 1990-09-27 1996-09-04 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン 光学ディスク駆動装置
KR100230228B1 (ko) * 1993-07-31 1999-11-15 윤종용 광디스크 시스템의 포커싱 제어장치
KR100447663B1 (ko) * 1996-09-19 2004-11-08 엘지전자 주식회사 Cdp포커스오프셋자동조정장치및그방법
US6252835B1 (en) 1996-09-19 2001-06-26 L G Electronics Inc Apparatus for automatically adjusting focus offset and method thereof in a disc player
JP2002538570A (ja) 1999-02-22 2002-11-12 シーゲイト テクノロジー エルエルシー 再現性ランアウト・エラーの補償
US6563663B1 (en) 1999-05-07 2003-05-13 Seagate Technology Llc Repeatable runout compensation using iterative learning control in a disc storage system
KR20020025197A (ko) 1999-07-23 2002-04-03 추후 계획된 변수들을 가진 학습 알고리즘을 사용하는 반복되는런아웃 보상
US6952320B1 (en) 1999-12-16 2005-10-04 Seagate Technology Llc Virtual tracks for repeatable runout compensation
US20020186625A1 (en) * 2001-06-08 2002-12-12 Chien-Li Hung Method of rapidly adjusting optical drive focus error level
TWI283403B (en) * 2002-02-19 2007-07-01 Via Tech Inc Focus control method and device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952191A (en) * 1973-11-13 1976-04-20 Thomson-Brandt Controlled system for focussing a read-out light beam
EP0004476A1 (en) * 1978-03-27 1979-10-03 Discovision Associates Time base error correction for optical disc players
DE3048708A1 (de) * 1979-12-28 1981-10-15 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Servosteuersystem fuer optisches lesen und aufzeichnen
EP0020199B1 (fr) * 1979-05-31 1983-09-21 Thomson-Brandt Système de commande de changement de face lue pour un lecteur optique de support d'information

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7509906A (nl) * 1975-08-21 1977-02-23 Philips Nv Inrichting voor het uitlezen van een schijfvor- mige registratiedrager.
FR2349191A1 (fr) * 1976-04-23 1977-11-18 Thomson Brandt Lecteur optique de disque d'information comportant un dispositif d'acces automatique aux informations
US4375091A (en) * 1978-06-30 1983-02-22 Discovision Associates Method and apparatus for information retrieval from an optically readable storage medium
JPS5538639A (en) * 1978-09-07 1980-03-18 Pioneer Video Corp Servo drawing-in unit for focus lens of optical information reader
NL7810386A (nl) * 1978-10-17 1980-04-21 Philips Nv Optische leesinrichting voor het uitlezen van een schijfvormige registratiedrager.
NL7812111A (nl) * 1978-12-13 1980-06-17 Philips Nv Inrichting voor het optisch uitlezen van een schijf- vormige registratiedrager, in het bijzonder het snel opzoeken van een gewenst programmagedeelte.
JPS57113428A (en) * 1980-12-29 1982-07-14 Pioneer Video Corp Focus servo device
US4417330A (en) * 1981-10-15 1983-11-22 Burroughs Corporation Optical memory system providing improved focusing control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952191A (en) * 1973-11-13 1976-04-20 Thomson-Brandt Controlled system for focussing a read-out light beam
EP0004476A1 (en) * 1978-03-27 1979-10-03 Discovision Associates Time base error correction for optical disc players
EP0020199B1 (fr) * 1979-05-31 1983-09-21 Thomson-Brandt Système de commande de changement de face lue pour un lecteur optique de support d'information
DE3048708A1 (de) * 1979-12-28 1981-10-15 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Servosteuersystem fuer optisches lesen und aufzeichnen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520543A1 (fr) * 1982-01-24 1983-07-29 Sony Corp Appareil de lecture optique d'un support d'enregistrement tel qu'un disque
EP0335344A3 (en) * 1988-03-29 1990-10-31 Toray Silicone Company, Limited Transparent flame-retardant silicone rubber compositions

Also Published As

Publication number Publication date
KR880002326B1 (ko) 1988-10-22
JPS57186239A (en) 1982-11-16
US4497047A (en) 1985-01-29
JPH0227734B2 (en, 2012) 1990-06-19
DE3217701C2 (en, 2012) 1990-11-15
GB2100033A (en) 1982-12-15
FR2505536B1 (en, 2012) 1985-03-22
GB2100033B (en) 1984-09-05
DE3217701A1 (de) 1982-12-02

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