G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.1
G11B 7/00 (2006.01) G11B 7/0037 (2006.01) G11B 7/0045 (2006.01) G11B 11/105 (2006.01) G11B 19/02 (2006.01) G11B 19/24 (2006.01) G11B 19/28 (2006.01)
Patent
CA 2023869
An optical disk recording/reproducing device for recording and/or reproducing information on and/or from an optical disk while rotatively driving the optical disk in angular constant velocity on which disk pre-recorded information is cyclically formed along a track so as to provide rotation control by constant linear velocity. The device, which includes a clock generating circuit for generating a clock for recording and/or reproducing in accordance with a recording frequency of the pre-recorded information derived from signals reproduced by an optical head, is designed to perform recording and/or reproducing operations with a frequency for recording according to the clock. The device further includes a magnetic field control circuit and/or recording light power control circuit whereby a magnetic field and/or light power to be applied to the optical disk may be varied according to the frequency for recording in recording operation.
Deguchi Toshihisa
Maeda Shigemi
Terashima Shigeo
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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