GB2124802B - Optical disc players - Google Patents

Optical disc players

Info

Publication number
GB2124802B
GB2124802B GB08318490A GB8318490A GB2124802B GB 2124802 B GB2124802 B GB 2124802B GB 08318490 A GB08318490 A GB 08318490A GB 8318490 A GB8318490 A GB 8318490A GB 2124802 B GB2124802 B GB 2124802B
Authority
GB
United Kingdom
Prior art keywords
optical disc
disc players
players
optical
disc
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
Application number
GB08318490A
Other languages
English (en)
Other versions
GB8318490D0 (en
GB2124802A (en
Inventor
Shinichiro Kuwabara
Kiyoshi Ohsato
Mikio Sugiki
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of GB8318490D0 publication Critical patent/GB8318490D0/en
Publication of GB2124802A publication Critical patent/GB2124802A/en
Application granted granted Critical
Publication of GB2124802B publication Critical patent/GB2124802B/en
Expired 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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during 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
    • 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
    • G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
GB08318490A 1982-07-10 1983-07-08 Optical disc players Expired GB2124802B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57120440A JPS5911543A (ja) 1982-07-10 1982-07-10 光学式デイスク再生装置

Publications (3)

Publication Number Publication Date
GB8318490D0 GB8318490D0 (en) 1983-08-10
GB2124802A GB2124802A (en) 1984-02-22
GB2124802B true GB2124802B (en) 1986-02-26

Family

ID=14786254

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08318490A Expired GB2124802B (en) 1982-07-10 1983-07-08 Optical disc players

Country Status (7)

Country Link
US (1) US4593386A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5911543A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR910005307B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1206613A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3324738A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2530060B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2124802B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58208944A (ja) * 1982-05-31 1983-12-05 Sony Corp 光学ヘツド制御信号発生装置
JPS59191144A (ja) * 1983-04-14 1984-10-30 Sony Corp 光ピツクアツプのトラツキングサ−ボ回路
DE3618720A1 (de) * 1985-06-05 1986-12-11 Hitachi, Ltd., Tokio/Tokyo Verfahren und vorrichtung zur spurnachfuehrung bei bildplatten
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
JP2796285B2 (ja) * 1986-07-11 1998-09-10 株式会社日立製作所 トラッキング方法及びそれを用いた光ディスク装置
JPH07118166B2 (ja) * 1987-05-21 1995-12-18 パイオニア株式会社 トラッキング回路
JPS6446237A (en) * 1987-08-12 1989-02-20 Canon Kk Optical information recording and reproducing device
JPH0760526B2 (ja) * 1989-04-10 1995-06-28 富士通株式会社 光記憶装置のビーム移動速度測定方法とその装置
US5038333A (en) * 1989-05-05 1991-08-06 International Business Machines Corporation Positioning systems including reliable track crossing detection for high speed relative motions
ES2095965T3 (es) * 1991-02-06 1997-03-01 Blaupunkt Werke Gmbh Procedimiento para la correccion de un angulo erroneo.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5774837A (en) * 1980-10-25 1982-05-11 Olympus Optical Co Ltd Signal detection system of optical information reproducing device
JPS5814332A (ja) * 1981-07-16 1983-01-27 Mitsubishi Electric Corp 光学式情報再生装置

Also Published As

Publication number Publication date
DE3324738A1 (de) 1984-01-12
DE3324738C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-11-07
FR2530060B1 (fr) 1985-07-12
JPH0330928B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-05-01
KR910005307B1 (ko) 1991-07-24
JPS5911543A (ja) 1984-01-21
CA1206613A (en) 1986-06-24
KR840005587A (ko) 1984-11-14
GB8318490D0 (en) 1983-08-10
FR2530060A1 (fr) 1984-01-13
GB2124802A (en) 1984-02-22
US4593386A (en) 1986-06-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020708