Apparatus for maintaining rotational speed in disk reproducing device
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United States of America Patent
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Jun 28, 1983
Grant Date -
N/A
app pub date -
Nov 13, 1981
filing date -
Nov 17, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a disc reading device wherein the rotating speed is normally controlled by detecting the synchronizing signal part of a reproduced signal, a second speed control circuit is included for measuring the speed of the disc and controlling the speed to a desired value independently of the detected synchronizing signals. When signal drop-out or the like occurs, the second speed control circuit takes over.
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