JPS5764336A - Track signal recording system of optical disk device - Google Patents

Track signal recording system of optical disk device

Info

Publication number
JPS5764336A
JPS5764336A JP13807280A JP13807280A JPS5764336A JP S5764336 A JPS5764336 A JP S5764336A JP 13807280 A JP13807280 A JP 13807280A JP 13807280 A JP13807280 A JP 13807280A JP S5764336 A JPS5764336 A JP S5764336A
Authority
JP
Japan
Prior art keywords
different
optical disk
disk device
recording system
signal recording
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.)
Pending
Application number
JP13807280A
Other languages
Japanese (ja)
Inventor
Yasuyuki Goto
Seiya Ogawa
Nagaaki Etsuno
Hironori Goto
Koichi Ogawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP13807280A priority Critical patent/JPS5764336A/en
Publication of JPS5764336A publication Critical patent/JPS5764336A/en
Pending 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To execute the tracking when information is recorded, by providing a pit row whose frequency is different in every line, between tracks of a recording medium. CONSTITUTION:A pit row 11 provided on a recording layer 13 on a transparent substrate 12 is recorded by a repetitive frequency which is different in every row by frequencies shown by fa, fb, fc and fd. Therefore, a laser light beam shown by a dotted line obtains outputs whose frequencies are different respectively, from different pit rows, a position of a laser beam is detected by comparing the components of the respective frequencies, and the center of the light beam is irradiated to the center of the track.
JP13807280A 1980-10-02 1980-10-02 Track signal recording system of optical disk device Pending JPS5764336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13807280A JPS5764336A (en) 1980-10-02 1980-10-02 Track signal recording system of optical disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13807280A JPS5764336A (en) 1980-10-02 1980-10-02 Track signal recording system of optical disk device

Publications (1)

Publication Number Publication Date
JPS5764336A true JPS5764336A (en) 1982-04-19

Family

ID=15213308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13807280A Pending JPS5764336A (en) 1980-10-02 1980-10-02 Track signal recording system of optical disk device

Country Status (1)

Country Link
JP (1) JPS5764336A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS619842A (en) * 1984-06-26 1986-01-17 Toshiba Corp Optical disc tracking system
JPH02134729A (en) * 1988-11-16 1990-05-23 Matsushita Electric Ind Co Ltd Recording and reproducing device
US5523992A (en) * 1992-01-20 1996-06-04 Pioneer Electronic Corporation Optical disk reproducing apparatus for reading a track by irradiating two tracks with single beam spot

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS619842A (en) * 1984-06-26 1986-01-17 Toshiba Corp Optical disc tracking system
JPH02134729A (en) * 1988-11-16 1990-05-23 Matsushita Electric Ind Co Ltd Recording and reproducing device
US5523992A (en) * 1992-01-20 1996-06-04 Pioneer Electronic Corporation Optical disk reproducing apparatus for reading a track by irradiating two tracks with single beam spot

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