Method and apparatus to improve the positioning accuracy of a tracking arm
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United States of America Patent
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-
Dec 3, 1985
Grant Date -
N/A
app pub date -
Jun 30, 1983
filing date -
Jun 30, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus to improve the positioning accuracy of an actuator in a disc system. The apparatus provides for accelerating and braking the actuator at appropriate times during positioning operations in order to accurately position the actuator at a selected track on the disc. In addition, in order to maintain positioning accuracy in the presence of run-out, provision is made for detecting the occurrence of run-out by comparing positioning accuracy at spaced time intervals and blocking actuator braking at those times when it would be counter-productive to positioning accuracy.
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