Television – Receiver circuitry – Demodulator
Patent
1998-01-30
2000-02-08
Kostak, Victor R.
Television
Receiver circuitry
Demodulator
348 21, 348607, H04N 538
Patent
active
060233060
ABSTRACT:
NTSC interference detectors include an NTSC extracting filter for supplying an NTSC extracting filter response that separates accompanying co-channel interfering NTSC signal component from the received I-channel baseband signal and its direct bias component. The NTSC extracting filter comprises a comb filter, which includes a delay circuit for supplying in response to said received I-channel baseband signal differentially delayed signals with a prescribed amount of differential delay equal to the duration of an even number of horizontal scanning periods of NTSC signal as will generate said co-channel interfering NTSC signal components. The comb filter further includes a subtractor for differentially combining the differentially delayed signals to generate the comb filter response.
REFERENCES:
patent: 5260793 (1993-11-01), Citta et al.
patent: 5298803 (1994-03-01), Limberg
patent: 5479449 (1995-12-01), Patel et al.
patent: 5512957 (1996-04-01), Hulyalkar
patent: 5546132 (1996-08-01), Kim et al.
patent: 5594496 (1997-01-01), Nielsen et al.
patent: 5602602 (1997-02-01), Hulyalkar
patent: 5777692 (1998-07-01), Ghosh
patent: 5793417 (1998-08-01), Lee
patent: 5828404 (1998-10-01), Krishamurthy
patent: 5835131 (1998-11-01), Limberg
patent: 5852476 (1998-12-01), Limberg
Kostak Victor R.
Samsung Electronics Co,. Ltd.
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