JPS5285412A - Optical record regenerative device - Google Patents

Optical record regenerative device

Info

Publication number
JPS5285412A
JPS5285412A JP227176A JP227176A JPS5285412A JP S5285412 A JPS5285412 A JP S5285412A JP 227176 A JP227176 A JP 227176A JP 227176 A JP227176 A JP 227176A JP S5285412 A JPS5285412 A JP S5285412A
Authority
JP
Japan
Prior art keywords
optical record
regenerative device
light source
focusing
record regenerative
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
JP227176A
Other languages
Japanese (ja)
Other versions
JPS5920168B2 (en
Inventor
Shiro Tsuji
Tomio Yoshida
Akifumi Nakada
Hideo Okamura
Yasuhisa Fukushima
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 JP51002271A priority Critical patent/JPS5920168B2/en
Publication of JPS5285412A publication Critical patent/JPS5285412A/en
Publication of JPS5920168B2 publication Critical patent/JPS5920168B2/en
Expired 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

PURPOSE:To simplify focusing and tracking control in case of erasing by arranging a light source irradiating light for regenerating, tracking and focusing on an information track at the preceding scanning position from a light source irradiating an erase beam spot.
JP51002271A 1976-01-09 1976-01-09 optical recording/playback device Expired JPS5920168B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51002271A JPS5920168B2 (en) 1976-01-09 1976-01-09 optical recording/playback device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51002271A JPS5920168B2 (en) 1976-01-09 1976-01-09 optical recording/playback device

Publications (2)

Publication Number Publication Date
JPS5285412A true JPS5285412A (en) 1977-07-15
JPS5920168B2 JPS5920168B2 (en) 1984-05-11

Family

ID=11524697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51002271A Expired JPS5920168B2 (en) 1976-01-09 1976-01-09 optical recording/playback device

Country Status (1)

Country Link
JP (1) JPS5920168B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8201193A (en) * 1981-03-28 1982-10-18 Kokusai Denshin Denwa Co Ltd MAGNETO-OPTICAL REGISTRATION AND REPRODUCING SYSTEM.
JPS5945739U (en) * 1982-09-20 1984-03-27 ソニー株式会社 Optical pickup servo device
EP0106673A2 (en) * 1982-10-14 1984-04-25 Matsushita Electric Industrial Co., Ltd. Optical and reversible recording and reproducing apparatus
JPS60185232A (en) * 1984-03-05 1985-09-20 Matsushita Electric Ind Co Ltd Optical recording and reproducing device
JPS61158254A (en) * 1984-12-29 1986-07-17 Toshiba Corp Automatic answering telephone set
EP0255188A2 (en) * 1982-08-24 1988-02-03 Matsushita Electric Industrial Co., Ltd. Method of recording, reproducing and erasing information on an optical disk
JPH0341627A (en) * 1989-07-10 1991-02-22 Sanyo Electric Co Ltd Tracking control method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8201193A (en) * 1981-03-28 1982-10-18 Kokusai Denshin Denwa Co Ltd MAGNETO-OPTICAL REGISTRATION AND REPRODUCING SYSTEM.
EP0255188A2 (en) * 1982-08-24 1988-02-03 Matsushita Electric Industrial Co., Ltd. Method of recording, reproducing and erasing information on an optical disk
JPS5945739U (en) * 1982-09-20 1984-03-27 ソニー株式会社 Optical pickup servo device
EP0106673A2 (en) * 1982-10-14 1984-04-25 Matsushita Electric Industrial Co., Ltd. Optical and reversible recording and reproducing apparatus
JPS60185232A (en) * 1984-03-05 1985-09-20 Matsushita Electric Ind Co Ltd Optical recording and reproducing device
JPS61158254A (en) * 1984-12-29 1986-07-17 Toshiba Corp Automatic answering telephone set
JPH0341627A (en) * 1989-07-10 1991-02-22 Sanyo Electric Co Ltd Tracking control method

Also Published As

Publication number Publication date
JPS5920168B2 (en) 1984-05-11

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