DE69520804D1 - Gerät zur Detektion eines aufgezeichneten Signals - Google Patents

Gerät zur Detektion eines aufgezeichneten Signals

Info

Publication number
DE69520804D1
DE69520804D1 DE69520804T DE69520804T DE69520804D1 DE 69520804 D1 DE69520804 D1 DE 69520804D1 DE 69520804 T DE69520804 T DE 69520804T DE 69520804 T DE69520804 T DE 69520804T DE 69520804 D1 DE69520804 D1 DE 69520804D1
Authority
DE
Germany
Prior art keywords
detection
recorded signal
recorded
signal
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 - Lifetime
Application number
DE69520804T
Other languages
English (en)
Inventor
Shinichi Ohta
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
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE69520804D1 publication Critical patent/DE69520804D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • 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
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • G11B7/00375—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs arrangements for detection of physical defects, e.g. of recording layer
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69520804T 1994-02-22 1995-02-20 Gerät zur Detektion eines aufgezeichneten Signals Expired - Lifetime DE69520804D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6024240A JP3031655B2 (ja) 1994-02-22 1994-02-22 記録済信号検出装置

Publications (1)

Publication Number Publication Date
DE69520804D1 true DE69520804D1 (de) 2001-06-07

Family

ID=12132734

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69520804T Expired - Lifetime DE69520804D1 (de) 1994-02-22 1995-02-20 Gerät zur Detektion eines aufgezeichneten Signals

Country Status (4)

Country Link
US (1) US5721719A (de)
EP (1) EP0668588B1 (de)
JP (1) JP3031655B2 (de)
DE (1) DE69520804D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100501687B1 (ko) 2003-01-25 2005-07-18 삼성전자주식회사 광학기록/재생장치의 기록영역 검출장치 및 그의 검출방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR910009851B1 (ko) * 1989-04-22 1991-11-30 삼성전자 주식회사 광디스크 구동장치의 중복기록 방지회로
JP2809479B2 (ja) * 1990-05-29 1998-10-08 オリンパス光学工業株式会社 データ記録再生装置
US5309420A (en) * 1992-11-06 1994-05-03 International Business Machines Corporation Discriminator for detecting signal presence on optical media

Also Published As

Publication number Publication date
JPH07235054A (ja) 1995-09-05
EP0668588A1 (de) 1995-08-23
EP0668588B1 (de) 2001-05-02
US5721719A (en) 1998-02-24
JP3031655B2 (ja) 2000-04-10

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Legal Events

Date Code Title Description
8332 No legal effect for de