JPS641125A - Error signal generating circuit - Google Patents

Error signal generating circuit

Info

Publication number
JPS641125A
JPS641125A JP62156109A JP15610987A JPS641125A JP S641125 A JPS641125 A JP S641125A JP 62156109 A JP62156109 A JP 62156109A JP 15610987 A JP15610987 A JP 15610987A JP S641125 A JPS641125 A JP S641125A
Authority
JP
Japan
Prior art keywords
error signal
error
photodetector
detecting
state
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.)
Pending
Application number
JP62156109A
Other languages
English (en)
Other versions
JPH011125A (ja
Inventor
Kiyoshi Horie
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.)
CSK Corp
Original Assignee
CSK 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 CSK Corp filed Critical CSK Corp
Priority to JP62156109A priority Critical patent/JPS641125A/ja
Priority to US07/329,789 priority patent/US5070491A/en
Priority to PCT/JP1988/000626 priority patent/WO1988010495A1/ja
Priority to KR1019890700364A priority patent/KR890702203A/ko
Priority to EP19880906030 priority patent/EP0324859A4/en
Priority to CA000586627A priority patent/CA1322247C/en
Publication of JPH011125A publication Critical patent/JPH011125A/ja
Publication of JPS641125A publication Critical patent/JPS641125A/ja
Pending legal-status Critical Current

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
    • 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
    • G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP62156109A 1987-06-23 1987-06-23 Error signal generating circuit Pending JPS641125A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP62156109A JPS641125A (en) 1987-06-23 1987-06-23 Error signal generating circuit
US07/329,789 US5070491A (en) 1987-06-23 1988-06-23 Error signal generating circuit
PCT/JP1988/000626 WO1988010495A1 (en) 1987-06-23 1988-06-23 Error signal generator circuit
KR1019890700364A KR890702203A (ko) 1987-06-23 1988-06-23 에러신호 발생회로
EP19880906030 EP0324859A4 (en) 1987-06-23 1988-06-23 Error signal generator circuit
CA000586627A CA1322247C (en) 1987-06-23 1988-12-21 Error signal generating circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62156109A JPS641125A (en) 1987-06-23 1987-06-23 Error signal generating circuit
CA000586627A CA1322247C (en) 1987-06-23 1988-12-21 Error signal generating circuit

Publications (2)

Publication Number Publication Date
JPH011125A JPH011125A (ja) 1989-01-05
JPS641125A true JPS641125A (en) 1989-01-05

Family

ID=25672324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62156109A Pending JPS641125A (en) 1987-06-23 1987-06-23 Error signal generating circuit

Country Status (5)

Country Link
US (1) US5070491A (ja)
EP (1) EP0324859A4 (ja)
JP (1) JPS641125A (ja)
CA (1) CA1322247C (ja)
WO (1) WO1988010495A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0674308B1 (en) * 1989-02-13 1998-05-27 Omron Corporation Optical reproducing apparatus for a card
JPH0778975B2 (ja) * 1990-09-27 1995-08-23 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン 光学ディスク駆動装置
JPH04265530A (ja) * 1991-02-19 1992-09-21 Oki Electric Ind Co Ltd 光ディスク装置
US5412636A (en) * 1991-03-22 1995-05-02 Olympus Optical Co., Ltd. Apparatus for servo-controlling objective lens in recording and/or reproducing apparatus using optical record medium
US5189293A (en) * 1991-06-27 1993-02-23 U.S. Philips Corporation Optical scanning apparatus including beam focal point position control when out of focus range
KR100272118B1 (ko) * 1991-11-06 2000-11-15 이데이 노부유끼 디지탈 서보 제어 회로를 구비한 광디스크 플레이어 및 트래킹 서보 회로
US5352881A (en) * 1992-05-08 1994-10-04 Olympus Optical Co., Ltd. Focus control device in optical recording and reproducing apparatus having an optical-beam-position judging device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS618742A (ja) * 1984-06-21 1986-01-16 Matsushita Electric Ind Co Ltd 光学式情報記録再生装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030016B2 (ja) * 1979-09-25 1985-07-13 日本ビクター株式会社 円盤状記録媒体記録及び／又は再生装置のサ−ボ方式
DE3280232D1 (de) * 1981-06-22 1990-09-27 Toshiba Kawasaki Kk Optischer kopf.
JPS5933673A (ja) * 1982-08-16 1984-02-23 Hitachi Ltd 磁気ヘツドサ−ボ制御方法
JPS5933674A (ja) * 1982-08-16 1984-02-23 Sony Corp トラツキング制御装置
JPS5933675A (ja) * 1982-08-17 1984-02-23 Matsushita Electric Ind Co Ltd 情報読出装置
JPS59203276A (ja) * 1983-04-30 1984-11-17 Sansui Electric Co トラツキング制御回路
JPS60109034A (ja) * 1983-11-18 1985-06-14 Canon Inc 光デイスクの記録再生方法
JPS6113448A (ja) * 1984-06-29 1986-01-21 Pioneer Electronic Corp トラツキングエラ−信号生成装置
JPS6113446A (ja) * 1984-06-29 1986-01-21 Pioneer Electronic Corp エラ−信号生成装置
JP2510411B2 (ja) * 1984-11-13 1996-06-26 パイオニア株式会社 フオ−カスサ−ボ装置
JPS62180568A (ja) * 1986-02-04 1987-08-07 Sony Corp デイスク状記録媒体の欠陥検出装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS618742A (ja) * 1984-06-21 1986-01-16 Matsushita Electric Ind Co Ltd 光学式情報記録再生装置

Also Published As

Publication number Publication date
WO1988010495A1 (en) 1988-12-29
EP0324859A4 (en) 1991-05-15
US5070491A (en) 1991-12-03
CA1322247C (en) 1993-09-14
EP0324859A1 (en) 1989-07-26

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