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Filing date
Publication date
Application filedfiledCritical
Priority to JP50059571ApriorityCriticalpatent/JPS51136402A/ja
Publication of JPS51136402ApublicationCriticalpatent/JPS51136402A/ja
Publication of JPS5415485B2publicationCriticalpatent/JPS5415485B2/ja
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
Landscapes
Moving Of The Head For Recording And Reproducing By Optical Means
(AREA)
JP50059571A1975-05-211975-05-21Tracking method for optical information recording equipment
GrantedJPS51136402A
(en)