Pulse or digital communications – Repeaters – Testing
Patent
1991-09-09
1993-03-30
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
370 84, 341 61, H04B 138
Patent
active
051990466
ABSTRACT:
A first and second digital rate converter device and method provides for synchronization between a first digital sample sequence and a second digital output sequence related to the first digital sample sequence for a rate converter pair (501, 511; 601, 611). The method typically utilizes at least one of: queue monitoring and zero-crossing with resetting to minimize sampling timing error.
REFERENCES:
patent: 4411006 (1983-10-01), Horna
patent: 4453259 (1984-06-01), Miller
patent: 4460890 (1984-07-01), Busby
patent: 4870661 (1989-09-01), Yamada et al.
patent: 4953180 (1990-08-01), Fieschi et al.
patent: 4989221 (1991-01-01), Qureshi et al.
patent: 5060239 (1991-10-01), Briscoe et al.
"Optimum FIR Digital Filter Implementations for Decimation, Interpolation, and Narrow-Band Filtering", by Ronald E. Crochiere and Lawrence R. Rabiner, IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-23, No. 5, Oct. 1975.
"Digital Methods for Conversion Between Arbitrary Sampling Frequencies", by Tor A. Ramstad, IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-32, No. 3, Jun. 1984.
Chin Stephen
Codex Corporation
Stockley Darleen J.
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