DE69025269D1 - Informationsverarbeitungsgerät - Google Patents

Informationsverarbeitungsgerät

Info

Publication number
DE69025269D1
DE69025269D1 DE69025269T DE69025269T DE69025269D1 DE 69025269 D1 DE69025269 D1 DE 69025269D1 DE 69025269 T DE69025269 T DE 69025269T DE 69025269 T DE69025269 T DE 69025269T DE 69025269 D1 DE69025269 D1 DE 69025269D1
Authority
DE
Germany
Prior art keywords
information processing
processing device
information
processing
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
DE69025269T
Other languages
English (en)
Other versions
DE69025269T2 (de
Inventor
Seiichiro Satomura
Kano Takeshita
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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP29811989A external-priority patent/JPH03157871A/ja
Priority claimed from JP32968289A external-priority patent/JPH03192576A/ja
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE69025269D1 publication Critical patent/DE69025269D1/de
Publication of DE69025269T2 publication Critical patent/DE69025269T2/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1883—Methods for assignment of alternate areas for defective areas
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69025269T 1989-11-16 1990-11-15 Informationsverarbeitungsgerät Expired - Fee Related DE69025269T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP29811989A JPH03157871A (ja) 1989-11-16 1989-11-16 情報記録再生装置
JP32968289A JPH03192576A (ja) 1989-12-21 1989-12-21 情報記録再生装置

Publications (2)

Publication Number Publication Date
DE69025269D1 true DE69025269D1 (de) 1996-03-21
DE69025269T2 DE69025269T2 (de) 1996-07-04

Family

ID=26561388

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69025269T Expired - Fee Related DE69025269T2 (de) 1989-11-16 1990-11-15 Informationsverarbeitungsgerät

Country Status (3)

Country Link
US (1) US5347517A (de)
EP (1) EP0428411B1 (de)
DE (1) DE69025269T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0549155A3 (en) * 1991-12-24 1993-11-18 Advanced Micro Devices Inc Optical data disk control system
JP3083221B2 (ja) * 1992-11-11 2000-09-04 株式会社日立製作所 ディジタル信号再生装置及びディジタル信号再生方法
JPH09245349A (ja) * 1996-03-08 1997-09-19 Hitachi Ltd 磁気記録再生装置
US7032140B2 (en) * 2001-05-07 2006-04-18 Hitachi Global Storage Technologies Netherlands B.V. Method and system for synchronization in the presence of thermal asperity

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887942A (en) * 1972-04-13 1975-06-03 Century Data Systems Inc A Div Tape speed compensation system
US4208650A (en) * 1978-01-30 1980-06-17 Forney Engineering Company Data transmission system
US4394695A (en) * 1981-02-02 1983-07-19 Sharp Corporation Method and apparatus for evaluating recording systems
JPS58164011A (ja) * 1982-03-23 1983-09-28 Hitachi Denshi Ltd デ−タ弁別位相自動調整装置
JPS59167813A (ja) * 1983-03-14 1984-09-21 Toshiba Corp 位相同期回路
JPS6117273A (ja) * 1984-07-04 1986-01-25 Nec Corp 回転形磁気記録装置
JPS61142574A (ja) * 1984-12-14 1986-06-30 Nec Corp 光デイスク処理装置
US4762985A (en) * 1985-04-25 1988-08-09 Canon Kabushiki Kaisha Auto-focus apparatus applied to image reading apparatus and the like
US4908812A (en) * 1985-09-13 1990-03-13 Yamaha Corporation Synchronizing signal reproducing circuit in a disc playback device
US4726022A (en) * 1986-04-30 1988-02-16 International Business Machines Corporation Method and apparatus for stressing the data window in magnetic storage devices
US4760574A (en) * 1986-07-23 1988-07-26 Cx Corporation Photographic order matching method and apparatus
JPS6390075A (ja) * 1986-10-02 1988-04-20 Victor Co Of Japan Ltd デイジタル信号復調装置
JP2554719B2 (ja) * 1988-09-30 1996-11-13 株式会社東芝 記録データ読取り方式

Also Published As

Publication number Publication date
DE69025269T2 (de) 1996-07-04
EP0428411B1 (de) 1996-02-07
EP0428411A2 (de) 1991-05-22
EP0428411A3 (en) 1991-11-27
US5347517A (en) 1994-09-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee