Dynamic magnetic information storage or retrieval – General processing of a digital signal – In specific code or form
Patent
1982-01-18
1984-07-10
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
In specific code or form
360 51, G11B 509
Patent
active
044596235
ABSTRACT:
An all digital method and apparatus for recovering NRZ information from MFM data wherein the MFM pulse stream is monitored through hypothetical windows, the receipt of a pulse during a particular window providing information about the data state(s) represented by the pulse and tracking adjustments required to recover subsequent pulses, and further wherein each window is divided into a large number of subinterval's so that the coincidence of a pulse with a particular subinterval provides information about the amount and direction by which the position of subsequent windows should be changed for tracking correction; the windows and subintervals being implemented by the execution of one of a number of step sequences, the particular step sequence being executed indicating the classification of a pulse received during the particular step sequence, and the step being executed at the time of receipt of the pulse indicating required tracking adjustments.
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Fosse James A.
Glenn, II Fletcher M.
Canney Vincent P.
MDS Qantel Corporation
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