DE69123417T2 - Vorrichtung zur Ermittlung der Verstellgeschwindigkeit eines Lesekopfes - Google Patents

Vorrichtung zur Ermittlung der Verstellgeschwindigkeit eines Lesekopfes

Info

Publication number
DE69123417T2
DE69123417T2 DE69123417T DE69123417T DE69123417T2 DE 69123417 T2 DE69123417 T2 DE 69123417T2 DE 69123417 T DE69123417 T DE 69123417T DE 69123417 T DE69123417 T DE 69123417T DE 69123417 T2 DE69123417 T2 DE 69123417T2
Authority
DE
Germany
Prior art keywords
determining
read head
adjustment speed
adjustment
speed
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 - Fee Related
Application number
DE69123417T
Other languages
English (en)
Other versions
DE69123417D1 (de
Inventor
Hiroshi Nakane
Taiji Inomata
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE69123417D1 publication Critical patent/DE69123417D1/de
Publication of DE69123417T2 publication Critical patent/DE69123417T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B21/08—Track changing or selecting during transducing operation
    • 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
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • 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
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking 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
    • G11B7/085—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
    • G11B7/08529—Methods and circuits to control the velocity of the head as it traverses the tracks
DE69123417T 1990-09-28 1991-09-25 Vorrichtung zur Ermittlung der Verstellgeschwindigkeit eines Lesekopfes Expired - Fee Related DE69123417T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2256877A JPH04137275A (ja) 1990-09-28 1990-09-28 ピックアップの速度検出装置

Publications (2)

Publication Number Publication Date
DE69123417D1 DE69123417D1 (de) 1997-01-16
DE69123417T2 true DE69123417T2 (de) 1997-04-03

Family

ID=17298656

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69123417T Expired - Fee Related DE69123417T2 (de) 1990-09-28 1991-09-25 Vorrichtung zur Ermittlung der Verstellgeschwindigkeit eines Lesekopfes

Country Status (6)

Country Link
US (2) US5528568A (de)
EP (1) EP0477915B1 (de)
JP (1) JPH04137275A (de)
KR (1) KR950002397B1 (de)
CA (1) CA2052100A1 (de)
DE (1) DE69123417T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3815809B2 (ja) * 1995-08-07 2006-08-30 富士通株式会社 光学的記憶装置
US5673240A (en) * 1996-03-18 1997-09-30 Nec Corporation Seek control circuit for suppressing vibration of objective lens in optical head during seek operation
DE19715275A1 (de) * 1997-04-12 1998-10-15 Thomson Brandt Gmbh Gerät zum Beschreiben oder Lesen optischer Aufzeichnungsträger
KR100425461B1 (ko) * 2001-08-29 2004-03-30 삼성전자주식회사 디스크 판별 장치 및 방법
US20030128639A1 (en) * 2001-12-18 2003-07-10 Matsushita Elec. Ind. Co. Ltd. Optical disc device
JP2004030798A (ja) * 2002-06-26 2004-01-29 Mitsubishi Electric Corp 記録ディスク再生装置
JP5015576B2 (ja) * 2006-03-15 2012-08-29 株式会社豊田中央研究所 ２値化回路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4788421A (en) * 1985-05-15 1988-11-29 Mitsubishi Denki Kabushiki Kaisha Apparatus for controlling relative movement of an optical head to an optical disk with velocity detection
JPS63268170A (ja) * 1987-04-24 1988-11-04 Fujitsu Ltd 光デイスク装置のトラツクサ−ボ方式
JPS63304430A (ja) * 1987-06-04 1988-12-12 Pioneer Electronic Corp 情報記録ディスクプレ−ヤの情報読取点移動方向検出装置
JPH01105335A (ja) * 1987-07-31 1989-04-21 Sony Corp 光ディスク装置
JPH0738136B2 (ja) * 1988-08-22 1995-04-26 三菱電機株式会社 位置決め制御装置
NL8802435A (nl) * 1988-10-05 1990-05-01 Philips Nv Inrichting voor het aftasten van een registratiedrager, alsmede een regelschakeling voor toepassing in een dergelijke inrichting.

Also Published As

Publication number Publication date
US5528568A (en) 1996-06-18
CA2052100A1 (en) 1992-03-29
KR920006943A (ko) 1992-04-28
KR950002397B1 (ko) 1995-03-17
JPH04137275A (ja) 1992-05-12
DE69123417D1 (de) 1997-01-16
EP0477915A2 (de) 1992-04-01
EP0477915B1 (de) 1996-12-04
US5572494A (en) 1996-11-05
EP0477915A3 (en) 1993-01-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee