JPS5778638A - Optical recording method - Google Patents

Optical recording method

Info

Publication number
JPS5778638A
JPS5778638A JP15530480A JP15530480A JPS5778638A JP S5778638 A JPS5778638 A JP S5778638A JP 15530480 A JP15530480 A JP 15530480A JP 15530480 A JP15530480 A JP 15530480A JP S5778638 A JPS5778638 A JP S5778638A
Authority
JP
Japan
Prior art keywords
tracking control
control signal
laser light
information signal
modulated
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
JP15530480A
Other languages
Japanese (ja)
Other versions
JPS6035735B2 (en
Inventor
Ichiro Ueno
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor 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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP15530480A priority Critical patent/JPS6035735B2/en
Publication of JPS5778638A publication Critical patent/JPS5778638A/en
Publication of JPS6035735B2 publication Critical patent/JPS6035735B2/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
    • G11B7/08—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

Abstract

PURPOSE:To prevent a bad influence exerted on a tracking control signal due to a variation of a recording laser beam, by recording the tracking control signal on both sides of an information signal, at the same time. CONSTITUTION:As for a laser light beam emitted from a laser light source 40, its intensity is modulated by an information signal in an optical modulator 10, and an image is formed as shown by 21 on an optical disk D. Also, as for the laser beam reflected by a half-mirror 9, its intensity is modulated by a tracking control signal in optical modulators 22, 28, and images 34, 35 are formed on the optical disk D. According to such constitution, even if a short-time output drop or output stop occurs in the laser light source, the tracking control signal is a nonrecording state at the same time on both sides of an information signal, therefore, when reproducing, the tracking control operation does not go out of order.
JP15530480A 1980-11-05 1980-11-05 optical recording method Expired JPS6035735B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15530480A JPS6035735B2 (en) 1980-11-05 1980-11-05 optical recording method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15530480A JPS6035735B2 (en) 1980-11-05 1980-11-05 optical recording method

Publications (2)

Publication Number Publication Date
JPS5778638A true JPS5778638A (en) 1982-05-17
JPS6035735B2 JPS6035735B2 (en) 1985-08-16

Family

ID=15602968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15530480A Expired JPS6035735B2 (en) 1980-11-05 1980-11-05 optical recording method

Country Status (1)

Country Link
JP (1) JPS6035735B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009021393A (en) * 2007-07-12 2009-01-29 Toyota Motor Corp Beam irradiating method and beam irradiating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009021393A (en) * 2007-07-12 2009-01-29 Toyota Motor Corp Beam irradiating method and beam irradiating device

Also Published As

Publication number Publication date
JPS6035735B2 (en) 1985-08-16

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