Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Reexamination Certificate
2006-10-24
2006-10-24
Young, Wayne (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
Reexamination Certificate
active
07126776
ABSTRACT:
The present invention compensates for variations in the angular velocity of the drive's spindle motor by periodically dropping clocks to a counter based upon the previous servo wedge-to-wedge timing. This enables a substantially constant count to be maintained between servo wedges and allows a more predictable generation of the data sector pulses. A more predictable generation of the data sector pulses enables the size of the guard band preceding each data sector to be decreased and the capacity of the disk to be correspondingly increased.
REFERENCES:
patent: RE294321 (1977-10-01), Desai
patent: 4808884 (1989-02-01), Hull et al.
patent: 5307216 (1994-04-01), Cook et al.
patent: 5311376 (1994-05-01), Joan et al.
patent: 6081397 (2000-06-01), Belser
patent: 6583944 (2003-06-01), Wilson et al.
Kubo, M. Okada, K Okutso, K, Spindle Rotation Velocity Monitor by Sector Interval Analysis, IBM Technical Disclosure Bulletin, May 1993.
Hagen Mark D.
Warren, Jr. Robert W.
Evans, Esq. Jason T.
Negrón Daniell L.
Western Digital Technologies Inc.
Young Wayne
Young Law Firm
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