DE69019914D1 - Verlangsamungskontrollsystem. - Google Patents

Verlangsamungskontrollsystem.

Info

Publication number
DE69019914D1
DE69019914D1 DE69019914T DE69019914T DE69019914D1 DE 69019914 D1 DE69019914 D1 DE 69019914D1 DE 69019914 T DE69019914 T DE 69019914T DE 69019914 T DE69019914 T DE 69019914T DE 69019914 D1 DE69019914 D1 DE 69019914D1
Authority
DE
Germany
Prior art keywords
control system
deceleration control
deceleration
control
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
DE69019914T
Other languages
English (en)
Other versions
DE69019914T2 (de
Inventor
Shigenori Yanagi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26547057&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69019914(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP1265587A external-priority patent/JP2602334B2/ja
Priority claimed from JP1265589A external-priority patent/JP2545618B2/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69019914D1 publication Critical patent/DE69019914D1/de
Publication of DE69019914T2 publication Critical patent/DE69019914T2/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
    • 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
DE69019914T 1989-10-12 1990-10-05 Verlangsamungskontrollsystem. Expired - Fee Related DE69019914T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1265587A JP2602334B2 (ja) 1989-10-12 1989-10-12 光ディスク装置
JP1265589A JP2545618B2 (ja) 1989-10-12 1989-10-12 光ディスク装置のトラックジャンプ制御装置

Publications (2)

Publication Number Publication Date
DE69019914D1 true DE69019914D1 (de) 1995-07-13
DE69019914T2 DE69019914T2 (de) 1995-10-12

Family

ID=26547057

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69019914T Expired - Fee Related DE69019914T2 (de) 1989-10-12 1990-10-05 Verlangsamungskontrollsystem.

Country Status (4)

Country Link
US (1) US5182736A (de)
EP (1) EP0422851B1 (de)
KR (1) KR940006991B1 (de)
DE (1) DE69019914T2 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04351720A (ja) * 1991-05-29 1992-12-07 Canon Inc 情報記録再生装置
JPH0528513A (ja) * 1991-07-18 1993-02-05 Ricoh Co Ltd トラツキング引込み装置
JPH05174393A (ja) * 1991-12-20 1993-07-13 Ricoh Co Ltd ディスク装置のアクセス制御方法および制御装置
JPH05234286A (ja) * 1991-12-26 1993-09-10 Internatl Business Mach Corp <Ibm> アクチュエータ制御装置及び方法
US5875161A (en) * 1992-04-16 1999-02-23 Funai Electric Co., Ltd. Method and apparatus for accessing track on an optical disc
JP2659500B2 (ja) * 1992-09-17 1997-09-30 富士通株式会社 光ディスク装置のアクセス制御回路
JPH06139594A (ja) * 1992-10-27 1994-05-20 Pioneer Electron Corp 光ピックアップの駆動制御装置
US5623464A (en) * 1994-09-29 1997-04-22 Fujitsu Limited Optical disk apparatus and seek control method
JP3515645B2 (ja) * 1994-09-29 2004-04-05 富士通株式会社 光ディスク装置及びシーク制御方法
US5742568A (en) * 1995-06-09 1998-04-21 Olympus Optical Co., Ltd. Tracking controller and seek controller for optical recording device
JP3633095B2 (ja) * 1996-04-22 2005-03-30 富士通株式会社 光学的記憶装置
JPH09305984A (ja) * 1996-05-20 1997-11-28 Fujitsu Ltd 光学的記憶装置
US5953705A (en) * 1996-09-13 1999-09-14 Fujitsu Limited Ticketless system and processing method and memory medium storing its processing program
JP3791723B2 (ja) * 1997-08-28 2006-06-28 富士通株式会社 光学的記憶装置
JP3042484B2 (ja) * 1998-01-12 2000-05-15 日本電気株式会社 光ディスク装置の制御方法及び光ディスク装置
JP2000285479A (ja) * 1999-03-31 2000-10-13 Fujitsu Ltd 情報記憶装置
US6898164B2 (en) * 2001-01-25 2005-05-24 Dphi Acquisitions, Inc. Close tracking algorithm in a digital tracking servo system
US7522480B2 (en) 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
WO2003028017A1 (en) * 2001-09-24 2003-04-03 Koninklijke Philips Electronics N.V. Method and reproducing apparatus for performing an actuator jump operation

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61177640A (ja) * 1985-01-31 1986-08-09 Nec Corp 光デイスクにおけるトラツクアクセス装置
JPS61177641A (ja) * 1985-01-31 1986-08-09 Nec Corp 光デイスクにおけるトラツクアクセス装置
JPS63104274A (ja) * 1986-10-21 1988-05-09 Seiko Epson Corp トラツククロス信号発生回路
JPS63127437A (ja) * 1986-11-17 1988-05-31 Fujitsu Ltd 光デイスク装置のトラツクジヤンプ方式
JPS63273219A (ja) * 1987-04-30 1988-11-10 Mitsubishi Electric Corp 光デイスク駆動装置
JPS63269324A (ja) * 1987-04-28 1988-11-07 Mitsubishi Electric Corp 光デイスク駆動装置
JPH073731B2 (ja) * 1987-04-28 1995-01-18 シャープ株式会社 光ディスク装置におけるトラックジャンプ制御方法
JPH0748257B2 (ja) * 1987-05-07 1995-05-24 富士通株式会社 光ディスク装置のマルチトラックジャンプ回路
JP2565205B2 (ja) * 1987-08-20 1996-12-18 ソニー株式会社 光デイスク装置
JPH025733A (ja) * 1988-06-23 1990-01-10 Mazda Motor Corp 吸入空気量検出装置の故障検出装置
JP2546882B2 (ja) * 1988-09-16 1996-10-23 パイオニア株式会社 トラッキングサーボ装置
US5050146A (en) * 1989-07-31 1991-09-17 Literal Corporation Track seek recovery system and method
DE69023870T2 (de) * 1989-09-29 1996-04-25 Fujitsu Ltd Spurfolgkreis für optische Scheibeeinheit.

Also Published As

Publication number Publication date
US5182736A (en) 1993-01-26
DE69019914T2 (de) 1995-10-12
KR910008710A (ko) 1991-05-31
EP0422851A3 (en) 1992-04-15
EP0422851B1 (de) 1995-06-07
EP0422851A2 (de) 1991-04-17
KR940006991B1 (ko) 1994-08-03

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee