SG47439A1 - Optical recording and reproducing apparatus for tracking wobbling guide grooves - Google Patents

Optical recording and reproducing apparatus for tracking wobbling guide grooves

Info

Publication number
SG47439A1
SG47439A1 SG1996001410A SG1996001410A SG47439A1 SG 47439 A1 SG47439 A1 SG 47439A1 SG 1996001410 A SG1996001410 A SG 1996001410A SG 1996001410 A SG1996001410 A SG 1996001410A SG 47439 A1 SG47439 A1 SG 47439A1
Authority
SG
Singapore
Prior art keywords
tracking
reproducing apparatus
optical recording
guide grooves
wobbling guide
Prior art date
Application number
SG1996001410A
Other languages
English (en)
Inventor
Masahisa Shinoda
Kenjiro Kime
Toshiya Matozaki
Kenji Nakamura
Toru Yoshihara
Takeshi Ito
Original Assignee
Mitsubishi Electric 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26521773&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SG47439(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP3217027A external-priority patent/JP2633420B2/ja
Priority claimed from JP3307418A external-priority patent/JP2644126B2/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of SG47439A1 publication Critical patent/SG47439A1/en

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
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot 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
    • G11B7/08—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
    • G11B7/0901—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 for track following only
    • G11B7/0904—Dithered tracking systems
    • 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
    • G11B7/094—Methods and circuits for servo offset compensation
SG1996001410A 1991-08-28 1992-08-27 Optical recording and reproducing apparatus for tracking wobbling guide grooves SG47439A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3217027A JP2633420B2 (ja) 1991-08-28 1991-08-28 光記録再生装置
JP3307418A JP2644126B2 (ja) 1991-11-22 1991-11-22 光記録再生装置

Publications (1)

Publication Number Publication Date
SG47439A1 true SG47439A1 (en) 1998-04-17

Family

ID=26521773

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996001410A SG47439A1 (en) 1991-08-28 1992-08-27 Optical recording and reproducing apparatus for tracking wobbling guide grooves

Country Status (5)

Country Link
US (3) US5303216A (fr)
EP (1) EP0530023B2 (fr)
KR (1) KR950010418B1 (fr)
DE (1) DE69218070T3 (fr)
SG (1) SG47439A1 (fr)

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Also Published As

Publication number Publication date
US5434834A (en) 1995-07-18
DE69218070T3 (de) 2000-10-12
EP0530023B1 (fr) 1997-03-12
EP0530023A2 (fr) 1993-03-03
EP0530023B2 (fr) 2000-05-10
EP0530023A3 (fr) 1994-01-05
US5383169A (en) 1995-01-17
DE69218070D1 (de) 1997-04-17
KR930004952A (ko) 1993-03-23
DE69218070T2 (de) 1997-10-09
US5303216A (en) 1994-04-12
KR950010418B1 (ko) 1995-09-16

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