DE3363996D1 - Tracking servo control unit for an information reproducing apparatus - Google Patents

Tracking servo control unit for an information reproducing apparatus

Info

Publication number
DE3363996D1
DE3363996D1 DE8383101658T DE3363996T DE3363996D1 DE 3363996 D1 DE3363996 D1 DE 3363996D1 DE 8383101658 T DE8383101658 T DE 8383101658T DE 3363996 T DE3363996 T DE 3363996T DE 3363996 D1 DE3363996 D1 DE 3363996D1
Authority
DE
Germany
Prior art keywords
control unit
reproducing apparatus
servo control
information reproducing
tracking servo
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.)
Expired
Application number
DE8383101658T
Other languages
German (de)
English (en)
Inventor
Yoshimi Iso
Shigeki Inoue
Tsutomu Noda
Shinichi Ohashi
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3363996D1 publication Critical patent/DE3363996D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G11B21/106—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks
    • 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
DE8383101658T 1982-02-22 1983-02-21 Tracking servo control unit for an information reproducing apparatus Expired DE3363996D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57026004A JPS58143472A (ja) 1982-02-22 1982-02-22 記録情報再生装置のトラツキングサ−ボ制御装置

Publications (1)

Publication Number Publication Date
DE3363996D1 true DE3363996D1 (en) 1986-07-17

Family

ID=12181548

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383101658T Expired DE3363996D1 (en) 1982-02-22 1983-02-21 Tracking servo control unit for an information reproducing apparatus

Country Status (4)

Country Link
US (1) US4539665A (en, 2012)
EP (1) EP0087718B1 (en, 2012)
JP (1) JPS58143472A (en, 2012)
DE (1) DE3363996D1 (en, 2012)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139152A (ja) * 1983-01-28 1984-08-09 Canon Inc 光情報再生方法および装置
JPS59140642A (ja) * 1983-01-31 1984-08-13 Canon Inc トラツキングエラ−信号検出装置
DE3323007C1 (de) * 1983-06-25 1984-06-28 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Spurfolgesystem mit einem optischen Abtaster für ein Audio- oder Video-Plattenwiedergabegerät
JPS6069840A (ja) * 1983-09-22 1985-04-20 Canon Inc 情報記録又は再生装置
JPS6067518U (ja) * 1983-10-12 1985-05-14 ヤマハ株式会社 光学式デイスク再生装置の信号処理回路
NL8403534A (nl) * 1984-11-21 1986-06-16 Philips Nv Inrichting voor het uitlezen van een schijfvormige registratiedrager.
US4706235A (en) * 1985-01-25 1987-11-10 Storage Technology Partners 11 Differential track recording
EP0207517B1 (en) * 1985-07-05 1991-02-27 Mitsubishi Denki Kabushiki Kaisha Optical pickup apparatus
EP0216341B1 (en) * 1985-09-27 1990-07-04 Sharp Kabushiki Kaisha Tracking system for optical disc memory
JPH064414Y2 (ja) * 1986-03-10 1994-02-02 パイオニア株式会社 トラツキング制御装置
JPH0721865B2 (ja) * 1986-08-29 1995-03-08 パイオニア株式会社 光学式記録情報読取装置
JPH0679378B2 (ja) * 1986-12-15 1994-10-05 ソニー株式会社 光学式記録再生装置のトラツキングサ−ボ回路
JP2696822B2 (ja) * 1987-01-22 1998-01-14 ソニー株式会社 トラツキングサーボ装置
JPH0719385B2 (ja) * 1987-04-24 1995-03-06 株式会社日立製作所 光学的記録再生装置
JPH0654542B2 (ja) * 1987-08-28 1994-07-20 富士通株式会社 光学記憶装置
US5291466A (en) * 1989-03-22 1994-03-01 Goldstar Co., Ltd. Automatic control system for a tracking servo unbalance of optical disk player
DE3916462A1 (de) * 1989-05-20 1990-11-22 Thomson Brandt Gmbh Verfahren zum spurspringen
US5293366A (en) * 1990-07-26 1994-03-08 Canon Kabushiki Kaisha Information recording and reproducing apparatus provided with means for adding to a tracking signal offset corresponding to the positional deviation of a recording spot and a reproducing spot
US5689485A (en) * 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method
JPH11120576A (ja) * 1997-10-14 1999-04-30 Kenwood Corp 光ディスク再生方法、光ディスク再生装置
TW410335B (en) * 1997-10-14 2000-11-01 Kenwood Corp Method and apparatus of intermittent arrangement multibeam optical disc readout
US6339565B1 (en) 1999-03-31 2002-01-15 Lsi Logic Corporation Non-linear center-error generator for DVD servo control

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037252A (en) * 1973-11-10 1977-07-19 U.S. Philips Corporation Apparatus for reading a disc-shaped record carrier with plural scanning spots for stable radial tracking
NL7315419A (nl) * 1973-11-10 1975-05-13 Philips Nv Inrichting voor het uitlezen van een schijfvor- mige registratiedrager.
NL7509906A (nl) * 1975-08-21 1977-02-23 Philips Nv Inrichting voor het uitlezen van een schijfvor- mige 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.
JPS6048809B2 (ja) * 1979-10-16 1985-10-29 パイオニアビデオ株式会社 情報読取装置におけるトラッキングサ−ボ引込装置
US4340950A (en) * 1979-10-12 1982-07-20 Universal Pioneer Corporation Video disc player
JPS6331218Y2 (en, 2012) * 1979-11-08 1988-08-22
NL8001974A (nl) * 1980-04-03 1981-11-02 Philips Nv Spoorvolginrichting.
US4365324A (en) * 1980-11-19 1982-12-21 Rca Corporation Eccentricity control device
JPS57120276A (en) * 1981-01-19 1982-07-27 Pioneer Electronic Corp Tracking servo lead-in system of recorded information reader

Also Published As

Publication number Publication date
US4539665A (en) 1985-09-03
EP0087718A1 (en) 1983-09-07
EP0087718B1 (en) 1986-06-11
JPH0237027B2 (en, 2012) 1990-08-22
JPS58143472A (ja) 1983-08-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition