Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1994-08-22
1997-06-17
Bowler, Alyssa H.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
395559, 369 4427, 3642328, 3642362, 364270, 364DIG1, G06F 700
Patent
active
056405839
ABSTRACT:
A disk drive controller integrated circuit includes a programmable servo burst decoder that can process any one of a plurality of servo sectors. A disk drive head reads each embedded servo sector on the disk and provides an analog signal, a servo burst, representing the servo sector to a preamp. The preamp provides an amplified analog signal to a read channel integrated circuit. The read channel integrated circuit provides input signals that are processed by the programmable servo burst decoder. The programmable servo burst decoder includes a programmable timing mark sequencer having an instruction register of a first size and a servo timing mark output line, and a programmable burst sequencer connected to the servo timing mark output line and having an instruction register of a second size. In this embodiment, the first size is different from the second size. Specifically, the first size is 20 bits, and the second size is 38 bits.
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Assouad Nicolas C.
Dyer David L.
Hill John P.
Adaptec, Inc.
Bowler Alyssa H.
Gunnison Forrest E.
Odedra Dhiren R.
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