Dynamic magnetic information storage or retrieval – General processing of a digital signal
Reexamination Certificate
2005-12-27
2005-12-27
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Reexamination Certificate
active
06980384
ABSTRACT:
A system and method of extending the position error signal for a disk drive storage system using two digital-to-analog converters in a summing junction, including a typical A-B signal and a track error signal scaled to match a gain of the A-B signal. A track error is calculated. The track error is output to a second digital-to-analog converter. The A-B signal is inverted according to the least significant bit of the grey code of a disk track being read. The inverted A-B signal is output to a first digital-to-analog converter. The inverted A-B signal and the track error are combined using a summer to generate a combined signal. The combined signal is used to generate an extended position error signal.
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Hagler James T.
Hudspeth David
Iomega Corporation
Tzeng Fred F.
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