Timing recovery on longitudinal magnetic tape record channels ba

Details Timing recovery on longitudinal magnetic tape record channels ba Timing recovery on longitudinal magnetic tape record channels ba

1992-04-10

1995-10-10

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 7309, 360 103, G11B 509

Patent

active

054575818

ABSTRACT:
A timing recovery system for the low density longitudinal record channels utilizing capstan velocity or feed forward rate in a magnetic tape recording/reproducing system in which the capstan feed forward velocity, derived from an encoder, provides a signal whose frequency is proportional to the speed of the tape driven by the capstan. A scaling circuit is provided by a frequency-to-voltage converter followed by a voltage-to-frequency converter, the output signal providing a demodulation clock having a multiplied frequency proportional to the data rate reproduced from the tape. The demodulation clock, fed to the timing window generation circuitry, provides an input to data detection circuitry to provide a clocked data output, regardless of the reproduce speed within a very large range of speeds.

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