JPH058496B2 - - Google Patents

Info

Publication number
JPH058496B2
JPH058496B2 JP59056877A JP5687784A JPH058496B2 JP H058496 B2 JPH058496 B2 JP H058496B2 JP 59056877 A JP59056877 A JP 59056877A JP 5687784 A JP5687784 A JP 5687784A JP H058496 B2 JPH058496 B2 JP H058496B2
Authority
JP
Japan
Prior art keywords
disk
laser
data
circumferential side
rotational speed
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 - Fee Related
Application number
JP59056877A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60201533A (ja
Inventor
Yoshihiro Tsukamura
Toshiro Morimoto
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
Priority to JP59056877A priority Critical patent/JPS60201533A/ja
Priority to AU40246/85A priority patent/AU567800B2/en
Priority to US06/714,870 priority patent/US4660189A/en
Priority to EP85103391A priority patent/EP0158193B1/en
Priority to CA000477207A priority patent/CA1244941A/en
Priority to DE8585103391T priority patent/DE3571356D1/de
Priority to AT85103391T priority patent/ATE44419T1/de
Publication of JPS60201533A publication Critical patent/JPS60201533A/ja
Publication of JPH058496B2 publication Critical patent/JPH058496B2/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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
JP59056877A 1984-03-24 1984-03-24 光学式ディスク再生装置 Granted JPS60201533A (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP59056877A JPS60201533A (ja) 1984-03-24 1984-03-24 光学式ディスク再生装置
AU40246/85A AU567800B2 (en) 1984-03-24 1985-03-22 Optical disc player
US06/714,870 US4660189A (en) 1984-03-24 1985-03-22 Optical disk player having reduced laser output during track changes
EP85103391A EP0158193B1 (en) 1984-03-24 1985-03-22 Optical disk player
CA000477207A CA1244941A (en) 1984-03-24 1985-03-22 Optical disk player
DE8585103391T DE3571356D1 (en) 1984-03-24 1985-03-22 Optical disk player
AT85103391T ATE44419T1 (de) 1984-03-24 1985-03-22 Optisches plattengeraet.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59056877A JPS60201533A (ja) 1984-03-24 1984-03-24 光学式ディスク再生装置

Publications (2)

Publication Number Publication Date
JPS60201533A JPS60201533A (ja) 1985-10-12
JPH058496B2 true JPH058496B2 (enrdf_load_html_response) 1993-02-02

Family

ID=13039645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59056877A Granted JPS60201533A (ja) 1984-03-24 1984-03-24 光学式ディスク再生装置

Country Status (1)

Country Link
JP (1) JPS60201533A (enrdf_load_html_response)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3848054B2 (ja) * 2000-05-15 2006-11-22 三星電子株式会社 光ディスクの記録装置および記録方法
JP2002230755A (ja) * 2001-01-31 2002-08-16 Sanyo Electric Co Ltd ディスク装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057135B2 (ja) * 1975-12-01 1985-12-13 松下電器産業株式会社 光学的記録再生装置

Also Published As

Publication number Publication date
JPS60201533A (ja) 1985-10-12

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees