MY8700039A - Tracking system for optical record medium - Google Patents

Tracking system for optical record medium

Info

Publication number
MY8700039A
MY8700039A MY39/87A MY8700039A MY8700039A MY 8700039 A MY8700039 A MY 8700039A MY 39/87 A MY39/87 A MY 39/87A MY 8700039 A MY8700039 A MY 8700039A MY 8700039 A MY8700039 A MY 8700039A
Authority
MY
Malaysia
Prior art keywords
tracking
error signal
track
record medium
control signals
Prior art date
Application number
MY39/87A
Other languages
English (en)
Inventor
Robert M Shoji
John S Chudy
Carlyle J Eberly
Original Assignee
Discovision Ass
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 Discovision Ass filed Critical Discovision Ass
Publication of MY8700039A publication Critical patent/MY8700039A/xx

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
    • G11B7/0948—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 specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts

Landscapes

  • Optical Recording Or Reproduction (AREA)
MY39/87A 1981-03-31 1987-12-30 Tracking system for optical record medium MY8700039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/249,549 US4406000A (en) 1981-03-31 1981-03-31 Tracking system for optical record medium

Publications (1)

Publication Number Publication Date
MY8700039A true MY8700039A (en) 1987-12-31

Family

ID=22943973

Family Applications (1)

Application Number Title Priority Date Filing Date
MY39/87A MY8700039A (en) 1981-03-31 1987-12-30 Tracking system for optical record medium

Country Status (7)

Country Link
US (1) US4406000A (xx)
EP (1) EP0062465B1 (xx)
JP (1) JPS57176546A (xx)
AT (1) ATE14639T1 (xx)
DE (1) DE3265008D1 (xx)
HK (1) HK51786A (xx)
MY (1) MY8700039A (xx)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5810275U (ja) * 1981-07-15 1983-01-22 パイオニア株式会社 情報記録領域の検出装置
JPS5814332A (ja) * 1981-07-16 1983-01-27 Mitsubishi Electric Corp 光学式情報再生装置
JPS58189842A (ja) * 1982-04-30 1983-11-05 Toshiba Corp 光学式デジタルデイスクプレ−ヤ装置
US4518856A (en) * 1982-09-14 1985-05-21 Sheltered Workshop For The Disabled, Inc. Line sensing method and apparatus
DE3340712A1 (de) * 1982-11-11 1984-05-17 Sony Corp., Tokio/Tokyo Spurhalteschaltung fuer optische wiedergabegeraete
JPS59145726U (ja) * 1983-03-16 1984-09-28 パイオニア株式会社 情報読取装置におけるサ−ボ装置
JPS6074129A (ja) * 1983-09-30 1985-04-26 Sony Corp 光学式デイスクのトラツキングサ−ボ回路
JPS60171638A (ja) * 1984-02-16 1985-09-05 Matsushita Electric Ind Co Ltd 情報再生装置
EP0185549B1 (en) * 1984-12-19 1989-08-02 Kabushiki Kaisha Toshiba Tracking control system for optical record disc information reproducing apparatus
DE3503983A1 (de) * 1985-02-06 1986-08-07 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Fokus-regelung fuer ein geraet fuer plattenfoermige, rotierende informationstraeger
US4740940A (en) * 1985-03-11 1988-04-26 Matsushita Electric Industrial Co., Ltd. Optical information read apparatus
JPH0740363B2 (ja) * 1985-03-20 1995-05-01 株式会社日立製作所 光学的記録再生装置
US4764860A (en) * 1985-06-26 1988-08-16 Nippon Gakki Seizo Kabushiki Kaisha Servo circuit for an information recording and/or reproducing apparatus
US4959823A (en) * 1985-07-30 1990-09-25 Laser Magnetic Storage International Company Tracking and seeking system for use with an optical record carrier having a wobbled track format
US4879708A (en) * 1985-07-30 1989-11-07 Laser Magnetic Storage International Company Optical disk tracking and seeking systems specific track formats using wobbled pits
US4879707A (en) * 1985-07-30 1989-11-07 Laser Magnetic Storage International Company Optical disk tracking and seeking systems specific track formats using discontinuities
JP2888484B2 (ja) * 1985-07-30 1999-05-10 オプテイカル ストレツジ インターナシヨナル−ユーエス 記録キャリア及び光データ読み書き装置
US5161243A (en) * 1986-01-21 1992-11-03 Matsushita Electric Industrial Co., Ltd. Tracking system for an optical recording/reproducing apparatus having a plurality of light spots
EP0247829A1 (en) * 1986-05-26 1987-12-02 Pioneer Electronic Corporation Method and apparatus for correcting loop gain of a fine adjustment servo loop
JPS63213126A (ja) * 1987-02-27 1988-09-06 Nec Corp 光デイスク装置
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
US5031166A (en) * 1988-01-25 1991-07-09 Laser Magnetic Storage International Company Optical disk tracking and seeking systems and specific track formats using discontinuities and circuitry therefor
JPH087960B2 (ja) * 1988-09-19 1996-01-29 パイオニア株式会社 ディスクプレーヤのサーボ装置
GB8906353D0 (en) * 1989-03-20 1989-05-04 Dewar Productions Inc Semi-timing optic lathe
US5038333A (en) * 1989-05-05 1991-08-06 International Business Machines Corporation Positioning systems including reliable track crossing detection for high speed relative motions
US5265079A (en) 1991-02-15 1993-11-23 Applied Magnetics Corporation Seek actuator for optical recording
US6141300A (en) * 1989-06-20 2000-10-31 Discovision Associates Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same
US5375107A (en) * 1989-09-30 1994-12-20 Deutsche Thomson-Brandt Gmbh Track error control signal generation apparatus as for a disc player
US6069857A (en) * 1991-02-15 2000-05-30 Discovision Associates Optical disc system having improved circuitry for performing blank sector check on readable disc
US5677899A (en) 1991-02-15 1997-10-14 Discovision Associates Method for moving carriage assembly from initial position to target position relative to storage medium
US5808980A (en) * 1991-02-15 1998-09-15 Discovision Associates Seek actuator for optical recording
US6236625B1 (en) 1991-02-15 2001-05-22 Discovision Associates Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
US5729511A (en) 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
US5537379A (en) * 1991-05-10 1996-07-16 Discovision Associates Optical data storage and retrieval system and method
JP3253153B2 (ja) 1992-10-20 2002-02-04 キヤノン株式会社 インクジェットヘッドカートリッジ及び該カートリッジを備えたインクジェット装置
US5790495A (en) 1994-05-06 1998-08-04 Discovision Associates Data generator assembly for retrieving stored data by comparing threshold signal with preprocessed signal having DC component
US5894468A (en) * 1994-05-06 1999-04-13 Discovision Associates Data recovery with differentiation and partial integration stages to eliminate noises and DC offset level
US6091684A (en) * 1995-01-25 2000-07-18 Discovision Associates Optical disc system and method for changing the rotational rate of an information storage medium
US5748578A (en) * 1995-01-25 1998-05-05 Discovision Associates Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same
US5920539A (en) * 1995-01-25 1999-07-06 Discovision Associates Apparatus and method for suppression of electromagnetic emissions having a groove on an external surface for passing an electrical conductor
US6434087B1 (en) 1995-01-25 2002-08-13 Discovision Associates Optical disc system and method for controlling bias coil and light source to process information on a storage medium
US5719836A (en) * 1995-04-07 1998-02-17 Discovision Associates Optical seeking method and apparatus generating track count signal from tracking error signal and data signal
US5978329A (en) * 1995-06-07 1999-11-02 Discovision Associates Technique for closed loop servo operation in optical disc tracking control
CN1077715C (zh) * 1995-12-06 2002-01-09 迪维安公司 聚焦控制的装置和方法
JPH09274723A (ja) * 1996-01-17 1997-10-21 Nikon Corp 情報再生方法および情報再生装置
US5689485A (en) * 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method
US6385736B1 (en) * 1997-12-23 2002-05-07 Lg Electronics, Inc. Method and apparatus for managing defect areas of recording medium using sector number comparison techniques
KR100429179B1 (ko) * 1998-07-01 2004-06-16 엘지전자 주식회사 광기록매체의결함영역관리장치및그방법
ATE305166T1 (de) 1998-07-28 2005-10-15 Lg Electronics Inc Datenaufzeichnungsverfahren und gerät auf optischem aufzeichnungsmedium
KR100407931B1 (ko) * 1998-07-29 2004-03-30 엘지전자 주식회사 실시간기록/재생시의파일관리방법및실시간데이터기록방법및그광기록/재생매체
PL346584A1 (en) * 1999-07-15 2002-02-11 Koninkl Philips Electronics Nv Method of scanning a recording disc for defects, and recording device for recording information on a disc-shaped recording medium
JP3808683B2 (ja) 2000-03-01 2006-08-16 三菱電機株式会社 光ディスク装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474418A (en) * 1967-06-19 1969-10-21 Ibm Data tracking system
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
FR2396379A1 (fr) * 1977-07-01 1979-01-26 Thomson Brandt Lecteur optique de disque d'information muni d'un dispositif d'acces automatique aux informations
NL7808638A (nl) * 1978-08-22 1980-02-26 Philips Nv Inrichting voor het uitlezen van een schijfvormige re- gistratiedrager.
JPS6040093B2 (ja) * 1978-09-09 1985-09-09 パイオニアビデオ株式会社 トラッキングサ−ボ引込装置
JPS5538686A (en) * 1978-09-13 1980-03-18 Pioneer Video Corp Tracking controller of optical information reader
US4271334A (en) * 1979-04-06 1981-06-02 Discovision Associates Apparatus for correcting for temperature-induced tracking errors in a system for recovering information from a recording disc
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

Also Published As

Publication number Publication date
ATE14639T1 (de) 1985-08-15
US4406000A (en) 1983-09-20
JPS57176546A (en) 1982-10-29
DE3265008D1 (en) 1985-09-05
EP0062465B1 (en) 1985-07-31
EP0062465A1 (en) 1982-10-13
HK51786A (en) 1986-07-11

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