Pulse or digital communications – Receivers
Patent
1995-07-12
1997-09-23
Bochure, Tesfaldet
Pulse or digital communications
Receivers
375326, 375355, 375341, 375345, 348555, H04L 2706, H04L 700
Patent
active
056712537
ABSTRACT:
An adaptive receiver includes an adaptive demodulator and an adaptive decoder for providing demodulated and decoded output data from a video signal encoded for satellite, terrestrial or cable transmission. The demodulator recovers demodulated output data by using an adaptive timing recovery network and an adaptive carrier recovery network that incorporates a selectable slicer network. In addition, an Automatic Gain Control network within the demodulator provides a gain control output as a function of a difference between signals produced both prior to and following the slicer. The demodulator may also incorporate a signal quality detector that uses carrier recovery network signals to provide an estimate of the error in the demodulated output data. The decoder produces a Viterbi decoded output from the demodulated output data by using a selectable code rate Viterbi decoder.
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Bochure Tesfaldet
Burke Alexander J.
Kurdyla Ronald H.
Thomson Consumer Electronics Inc.
Tripoli Joseph S.
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