Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Patent
1989-06-09
1991-09-10
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
360 49, 369 49, 375119, G11B 509, H03D 324
Patent
active
050478770
ABSTRACT:
Apparatus, for preventing false recognition of one or more address marks arranged at predetermined locations in a stream of information-bearing bits played back from a record storage medium, such as a disk, includes a timer, synchronized with the bit stream, for defining a corresponding series of intervals or "windows" relating, respectively, to when each of the address marks is expected to occur in the bit stream. An decoder, responsive to the timer, signals which address mark is expected to occur during each interval defined by the timer. Validation circuitry, responsive to the bit stream, the timer and the decoder, determines whether each address mark expected actually occurs in the bit stream within the corresponding time interval defined by the timer.
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Eastman Kodak Company
Monteith Dennis P.
Psitos Aristotelis M.
Sheladia Varsha V.
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