Television – Format – Including pulse modulation of video signal
Patent
1994-03-14
1995-01-31
Groody, James J.
Television
Format
Including pulse modulation of video signal
348426, 348470, 375 39, H04N 700, H04N 706
Patent
active
053862392
ABSTRACT:
In a video signal processing system, a single adaptive passband equalizer is used to process a composite Quadrature Amplitude Modulated (QAM) signal encoded with high priority (HP) and standard priority (SP) components. The equalizer output is phase corrected by a de-rotator, and filtered to separate the HP and SP components. Error signals respectively representing HP and SP phase errors are developed. One of the error signals controls the operation of the de-rotator. Both error signals are used to generate updated coefficients for the adaptive equalizer. Afterwards the HP and SP components are decoded and combined.
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Christopher Lauren A.
Wang Tian J.
Groody James J.
Herrmann Eric P.
Kurdyla Ronald H.
Metjahic Safet
Thomson Consumer Electronics Inc.
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