Fault tolerant servo address mark for disk drive

Details Fault tolerant servo address mark for disk drive Fault tolerant servo address mark for disk drive

1994-10-11

1996-08-06

Neyzari, Ali

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

360 46, 360 7708, 360 7714, G11B 1722, G11B 509, G11B 5596

Patent

active

055441351

ABSTRACT:
Apparatus and method for detecting occurrence of a non-pulse interval of predetermined length between a beginning pulse and an ending pulse as included within a sequence comprising a unique timing mark within a stream of pulses supplied from a source with a state machine. The method of the state machine includes the the steps of:

REFERENCES:
patent: 4823212 (1989-04-01), Knowles et al.
patent: 5134366 (1992-07-01), Kirk
patent: 5168395 (1992-12-01), Klaassen et al.
patent: 5231545 (1993-07-01), Gold
patent: 5255136 (1993-10-01), Machado
patent: 5384671 (1995-01-01), Fisher
Klaassen et al., "Barkhausen Noise in Thin-Film Recording Heads" IEEE Trans. on Magnetics vol. 26, No. 5, Sep. 1990, pp. 1697-1699.
"Fault-Tolerant Index Detection Pattern for Hard Disk Files", IBM Tech. Discl. Bull. vol. 29, No. 12, May 1987, pp. 5350-5351.

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