Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1995-10-20
1998-02-17
Burgess, Glenton B.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348 11, 348 7, 455 42, H04N 521
Patent
active
057196419
ABSTRACT:
Supplied with carrier and channel selection signals in a VOD receiver from a remote control data processor from a remote control switch, a switching control circuit produces demodulation and equalization control signals substantially concurrently with carrier switching started by the carrier selection signal. In response, a demodulator and a digital transversal equalizer are held in a held state. Immediately after completion of the carrier switching, the demodulator and the equalizer are turned back to an automatically controlled state to be operable with synchronism kept. While demodulation and equalization are held, a digital signal processor produces a receiver output video signal for standstill picture scenes. Immediately upon turn back of the demodulation and the equalization, the channel selection signal makes the output video signal represent moving picture scenes. The digital transversal equalizer may be an analog one connected to the demodulator.
REFERENCES:
patent: 3916093 (1975-10-01), Parker
patent: 4047226 (1977-09-01), Hedges
patent: 4771456 (1988-09-01), Martin et al.
patent: 5485198 (1996-01-01), Kallstrom
Burgess Glenton B.
NEC Corporation
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