Optical disk reproducing device provided with improved spindle m

Details Optical disk reproducing device provided with improved spindle m Optical disk reproducing device provided with improved spindle m

1997-02-28

1998-07-21

Hindi, Nabil

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

G11B 700

Patent

active

057843465

ABSTRACT:
An optical disk reproducing device has a spindle servo control in which when a focusing error or a tracking error occurs, the spindle control voltage immediately before the error occurred is detected and stored in a memory. During the spindle servo is being off, the spindle control voltage is retrieved from the memory and applied to the spindle motor. Because the spindle motor is rotating at a speed corresponding to the track now being traced during the spindle servo off period, the spindle servo can be established quickly.

REFERENCES:
patent: 5446711 (1995-08-01), Yamamiya
patent: 5701284 (1995-06-01), Lee

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