Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Patent
1991-06-11
1994-05-10
Sikes, William L.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
328 72, 328155, H03K 1700, G11B 509
Patent
active
053113764
ABSTRACT:
An integrated servo system for a disk drive employing sector servo positioning information on concentric tracks of a recording medium utilizes a servo burst pattern with three sequentially occurring servo bursts. One burst is positioned to have a maximum amplitude plateau on a track centerline of alternate tracks, and the other two bursts have maximum plateau values at locations between the centerlines of adjacent tracks. The amplitudes of the bursts are sequentially detected by a peak detector and supplied to sample and hold circuitry for measuring their relative amplitudes. Discriminator circuitry utilizes a window to provide two samples of each transition in the servo pattern and compares the samples to detect different fields and events in the pattern.
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Asami Takashi
Hull Richard W.
Joan David B.
Lee Marshall D.
Mento Robert P.
Sikes William L.
Tran Toan
Western Digital (Singapore) PTE
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