Dynamic magnetic information storage or retrieval – General recording or reproducing – Recording-or erasing-prevention
Patent
1987-03-19
1989-07-18
Faber, Alan
Dynamic magnetic information storage or retrieval
General recording or reproducing
Recording-or erasing-prevention
360 51, 331 25, G11B 2010
Patent
active
048498351
ABSTRACT:
A technique and associated arrangement for detecting loss of phase/frequency lock in a phase lock loop, particularly for a magnetic disk drive servo system the phase lock loop detects timing asynchronism and loss of lock.
REFERENCES:
patent: 4390910 (1983-06-01), Wilson
Entezarmahdi Seyed
Mortazavi Sassan
Faber Alan
Fournier Kevin J.
McCormack John J.
Unisys Corporation
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