Method and apparatus for recording servo synchronization information
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United States of America Patent
Stats
-
Apr 25, 1989
Grant Date -
N/A
app pub date -
Oct 14, 1986
filing date -
Oct 14, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A servo system for flexible magnetic disks such that the synchronization pulses do not have to be perfectly aligned. The disk is encoded such that consecutive servo tracks alternate between having a synchronization and an alternate synchronization mark. Four pulses represent a synchronization mark and two pulses represent an alternate synchronization mark. The alternate synchronization marks are off-set from the synchronization marks by a certain distance, such that they do not interfere with each other when a transducer head located between the servo tracks reads them. The disk drive system will read and identify the synchronization marks or alternate synchronization marks and start generating timing signals as appropriate. The servo bursts in the servo sector can then be read.
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Cited Art Landscape
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