JPS57164448A - Position detecting device - Google Patents

Position detecting device

Info

Publication number
JPS57164448A
JPS57164448A JP4909481A JP4909481A JPS57164448A JP S57164448 A JPS57164448 A JP S57164448A JP 4909481 A JP4909481 A JP 4909481A JP 4909481 A JP4909481 A JP 4909481A JP S57164448 A JPS57164448 A JP S57164448A
Authority
JP
Japan
Prior art keywords
tracking error
signal
output
disk
gain
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.)
Granted
Application number
JP4909481A
Other languages
English (en)
Other versions
JPS6223376B2 (ja
Inventor
Tsuneo Hirose
Shinichi Tanaka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4909481A priority Critical patent/JPS57164448A/ja
Publication of JPS57164448A publication Critical patent/JPS57164448A/ja
Publication of JPS6223376B2 publication Critical patent/JPS6223376B2/ja
Granted 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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP4909481A 1981-03-31 1981-03-31 Position detecting device Granted JPS57164448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4909481A JPS57164448A (en) 1981-03-31 1981-03-31 Position detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4909481A JPS57164448A (en) 1981-03-31 1981-03-31 Position detecting device

Publications (2)

Publication Number Publication Date
JPS57164448A true JPS57164448A (en) 1982-10-09
JPS6223376B2 JPS6223376B2 (ja) 1987-05-22

Family

ID=12821502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4909481A Granted JPS57164448A (en) 1981-03-31 1981-03-31 Position detecting device

Country Status (1)

Country Link
JP (1) JPS57164448A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520542A1 (fr) * 1982-01-22 1983-07-29 Victor Company Of Japan Systeme de commande d'alignement pour des disques sans sillon
JPS58194146A (ja) * 1982-04-30 1983-11-12 Sharp Corp 光学式デイスクプレ−ヤにおけるトラツキング制御装置
JPS6040534A (ja) * 1983-08-16 1985-03-02 Ricoh Co Ltd トラツキング制御方法及び装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH029973U (ja) * 1988-06-28 1990-01-23

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520542A1 (fr) * 1982-01-22 1983-07-29 Victor Company Of Japan Systeme de commande d'alignement pour des disques sans sillon
US4589103A (en) * 1982-01-22 1986-05-13 Victor Company Of Japan, Limited Tilt compensation tracking control system for optical discs
JPS58194146A (ja) * 1982-04-30 1983-11-12 Sharp Corp 光学式デイスクプレ−ヤにおけるトラツキング制御装置
JPS6334530B2 (ja) * 1982-04-30 1988-07-11 Sharp Kk
JPS6040534A (ja) * 1983-08-16 1985-03-02 Ricoh Co Ltd トラツキング制御方法及び装置

Also Published As

Publication number Publication date
JPS6223376B2 (ja) 1987-05-22

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