Method and apparatus for servo control with error detection of gray (pennington) code used for servo track ID
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United States of America Patent
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-
Apr 1, 1997
Grant Date -
N/A
app pub date -
Mar 2, 1995
filing date -
Mar 2, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Logic for detecting the reliability of an address in Pennington code (PCODE). The address is parsed into two separate halves. The first half corresponds to the front portion of the PCODE address and the second half corresponds to the back portion of the same. The two halves are compared to determine the reliability of the address. If the address is not reliable, a head position estimation is used to position the head over the described track. If the address is reliable, the PCODE is combined with a position error signal to position the head.
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Cited Art Landscape
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