Harold Pfiffner resumes & CV records
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Harold J Pfiffner, Age 963253 Mountain View Ave, Los Angeles, CA 90066
Harold Pfiffner Phones & Addresses
3253 Mountain View Ave, Los Angeles, CA 90066 (310) 313-6360 (310) 398-8952
Venice, CA
Rancho Palos Verdes, CA
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Us Patents
Processing Circuit With Asymmetry Corrector And Convolutional Encoder For Digital Data
US Patent:
4682343, Jul 21, 1987
Filed:
Sep 11, 1984
Appl. No.:
6/649327
Inventors:
Harold J. Pfiffner - Los Angeles CA
Assignee:
The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC
National Aeronautics and Space Administration - Washington DC
International Classification:
H04L 2740
G06F 1110
G06F 1110
US Classification:
375 59
Abstract:
A processing circuit (P) is provided for correcting for input parameter variations, such as data and clock signal asymmetry, phase offset and jitter, noise and signal amplitude, in incoming data signals. An asymmetry corrector circuit (C) performs the correcting function and furnishes the corrected data signals to a convolutional encoder circuit (E). The corrector circuit (C) further forms a regenerated clock signal from clock pulses in the incoming data signals and another clock signal at a multiple of the incoming clock signal. These clock signals are furnished to the encoder circuit (E) so that encoded data may be furnished to a modulator (M) at a high data rate for transmission.
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