Self-synchronizing clock source for optical memories

Details Self-synchronizing clock source for optical memories Self-synchronizing clock source for optical memories

G - Physics

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G11B 7/12 (2006.01) G11B 7/00 (2006.01) G11B 7/004 (2006.01) G11B 7/09 (2006.01) G11B 7/125 (2006.01) G11B 7/14 (2006.01) G11B 27/32 (2006.01)

Patent

CA 1155955

-1- ABSTRACT OF THE DISCLOSURE Periodic clock pulses are pre-recorded on each servo track of an optical disk to provide a local self-synchronizing source of clock frequency infor- mation for read only or direct read after write optical digital disk memories. In keeping with accepted practices, the servo track or tracks additionally functionas references for controlling the radial positioning of a read head or a read/ write head of such a memory.

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