Programmable timing mark sequencer for a disk drive

Details Programmable timing mark sequencer for a disk drive Programmable timing mark sequencer for a disk drive

1994-08-22

1997-06-17

Teska, Kevin J.

Dynamic magnetic information storage or retrieval

Head

Core

395580, 360 51, 360 7705, 360 7708, 318560, G06F 1700, G11B 5596

Patent

active

056405383

ABSTRACT:
A programmable timing mark sequencer automatically analyzes a sequence of data bits on a data input line. If the appropriate timing pattern is detected in the sequence of data bits, the timing mark sequencer drives a signal active on a servo timing mark output line. The timing mark sequencer is a fully programmable sequencer that is optimized for the detection of servo sector timing mark patterns. The timing mark sequencer includes a branch and fetch unit, a timing mark sequencer random access memory(RAM), an instruction register, a space counter, a window counter, and a synchronization flip-flop. The timing mark sequencer has a plurality of input lines including a search input line, a high resolution data bit line, and a decode clock line.

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