Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1992-10-13
1994-03-22
Psitos, Aristotelis
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4426, G11B 700
Patent
active
052971252
ABSTRACT:
The present invention is concerned with a recording medium wherein, in a recording medium in which the information may be regenerated optically, a track is pre-recorded or pre-formatted by being deviated along the track width with a signal which the baseband signal of a read-only information signal freed of high-frequency components. The present invention is also concerned with a recording apparatus for forming a track of an optical recording medium from which an information can be reproduced optically, wherein the apparatus includes a deviating device for deviating a track-forming recording beam along the width of the track of the optical recording medium, a deviation control signal generating device for generating deviation control baseband signals for controlling the deviation device, and a low-pass filter for eliminating the high-frequency components of the deviation control baseband signals.
REFERENCES:
patent: 4907216 (1990-03-01), Rijnsburger
patent: 4942565 (1990-07-01), Lagadec
patent: 5077721 (1991-12-01), Sako et al.
Sako Yoichiro
Yamagami Tamotsu
Huber P. W.
Psitos Aristotelis
Shaw, Jr. Philip M.
Sony Corporation
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