Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1990-06-01
1991-11-26
Wolff, John H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360 69, 360 722, G11B 1518, G11B 5012, G11B 555
Patent
active
050687557
ABSTRACT:
A sector pulse generator circuit for a hard disk drive assembly includes an angular position counter, a sector counter, a sector limit register, and a pulse generator. The circuit generates a sector pulse when the count in the angular position counter equals the count in the sector counter. When the count in the angular position counter exceeds the count in the sector counter, the sector counter is incremented by the number of clock pulses in a sector of the current track. The sector limit register stores the number of complete sectors in the current track.
REFERENCES:
patent: 4680653 (1987-07-01), Ng et al.
patent: 4772962 (1988-09-01), Tanaka et al.
patent: 4775969 (1988-10-01), Osterlund
patent: 4789911 (1988-12-01), Fukushima et al.
patent: 4847708 (1989-07-01), Furuyama
Coombes Robert J.
Hamilton Robert G.
Micropolis Corporation
Wolff John H.
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