JPS54102109A - Focusing method of optical recorder - Google Patents

Focusing method of optical recorder

Info

Publication number
JPS54102109A
JPS54102109A JP867978A JP867978A JPS54102109A JP S54102109 A JPS54102109 A JP S54102109A JP 867978 A JP867978 A JP 867978A JP 867978 A JP867978 A JP 867978A JP S54102109 A JPS54102109 A JP S54102109A
Authority
JP
Japan
Prior art keywords
becomes maximum
recording
objective lens
detecting
reproduction signal
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
JP867978A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6249657B2 (ro
Inventor
Akira Ichinose
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 JP867978A priority Critical patent/JPS54102109A/ja
Publication of JPS54102109A publication Critical patent/JPS54102109A/ja
Publication of JPS6249657B2 publication Critical patent/JPS6249657B2/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

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
JP867978A 1978-01-27 1978-01-27 Focusing method of optical recorder Granted JPS54102109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP867978A JPS54102109A (en) 1978-01-27 1978-01-27 Focusing method of optical recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP867978A JPS54102109A (en) 1978-01-27 1978-01-27 Focusing method of optical recorder

Publications (2)

Publication Number Publication Date
JPS54102109A true JPS54102109A (en) 1979-08-11
JPS6249657B2 JPS6249657B2 (ro) 1987-10-20

Family

ID=11699606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP867978A Granted JPS54102109A (en) 1978-01-27 1978-01-27 Focusing method of optical recorder

Country Status (1)

Country Link
JP (1) JPS54102109A (ro)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914137A (ja) * 1982-07-15 1984-01-25 Matsushita Electric Ind Co Ltd 光学式記録再生装置
JPS62110629A (ja) * 1985-11-08 1987-05-21 Seiko Epson Corp 光記録装置
JPH07307029A (ja) * 1995-03-29 1995-11-21 Seiko Epson Corp 光記録再生装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914137A (ja) * 1982-07-15 1984-01-25 Matsushita Electric Ind Co Ltd 光学式記録再生装置
JPH0411926B2 (ro) * 1982-07-15 1992-03-03 Matsushita Electric Ind Co Ltd
JPS62110629A (ja) * 1985-11-08 1987-05-21 Seiko Epson Corp 光記録装置
JPH07307029A (ja) * 1995-03-29 1995-11-21 Seiko Epson Corp 光記録再生装置

Also Published As

Publication number Publication date
JPS6249657B2 (ro) 1987-10-20

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