Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of equalizing
Reexamination Certificate
2007-04-17
2007-04-17
Young, Wayne (Department: 2627)
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of equalizing
C360S046000
Reexamination Certificate
active
10240385
ABSTRACT:
An adaptive type equalization circuit and a playback apparatus can be used for the playback of a digital signal. A playback signal is supplied to an analog to digital converter and phase lock loop such that digital conversion of the playback signal is performed. Characteristic information such as a detection signal from an envelope detector to which the playback signal is supplied, a signal showing a phase lock from the phase lock loop is supplied to a data generation circuit together with a playback signal from the analog to digital converter. The playback signal processed in the data generation circuit and its characteristic information are supplied to a processor such tat operation for weighting coefficients is performed. The weighting coefficients operated or calculated in the processor are supplied to a transversal filter so that adaptive equalization processing for the playback signal is performed.
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Levy Paul A.
Nguyen Linh T.
Young Wayne
LandOfFree
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