JPS58205936A - 光学的情報の読取装置 - Google Patents

光学的情報の読取装置

Info

Publication number
JPS58205936A
JPS58205936A JP9034282A JP9034282A JPS58205936A JP S58205936 A JPS58205936 A JP S58205936A JP 9034282 A JP9034282 A JP 9034282A JP 9034282 A JP9034282 A JP 9034282A JP S58205936 A JPS58205936 A JP S58205936A
Authority
JP
Japan
Prior art keywords
information
output
signal
correction
target value
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
JP9034282A
Other languages
English (en)
Japanese (ja)
Other versions
JPS631650B2 (enrdf_load_stackoverflow
Inventor
Yoshiharu Tanaka
義治 田中
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.)
Mansei Kogyo KK
Original Assignee
Mansei Kogyo KK
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 Mansei Kogyo KK filed Critical Mansei Kogyo KK
Priority to JP9034282A priority Critical patent/JPS58205936A/ja
Publication of JPS58205936A publication Critical patent/JPS58205936A/ja
Publication of JPS631650B2 publication Critical patent/JPS631650B2/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
    • G11B7/0908—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 focusing only

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP9034282A 1982-05-27 1982-05-27 光学的情報の読取装置 Granted JPS58205936A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9034282A JPS58205936A (ja) 1982-05-27 1982-05-27 光学的情報の読取装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9034282A JPS58205936A (ja) 1982-05-27 1982-05-27 光学的情報の読取装置

Publications (2)

Publication Number Publication Date
JPS58205936A true JPS58205936A (ja) 1983-12-01
JPS631650B2 JPS631650B2 (enrdf_load_stackoverflow) 1988-01-13

Family

ID=13995844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9034282A Granted JPS58205936A (ja) 1982-05-27 1982-05-27 光学的情報の読取装置

Country Status (1)

Country Link
JP (1) JPS58205936A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01235035A (ja) * 1988-03-14 1989-09-20 Matsushita Commun Ind Co Ltd トラッキングサーボ装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01235035A (ja) * 1988-03-14 1989-09-20 Matsushita Commun Ind Co Ltd トラッキングサーボ装置

Also Published As

Publication number Publication date
JPS631650B2 (enrdf_load_stackoverflow) 1988-01-13

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