Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Reexamination Certificate
2005-08-30
2005-08-30
Lee, Michael H. (Department: 2614)
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
Reexamination Certificate
active
06937292
ABSTRACT:
Composite ghost cancellation reference (GCR) signals that make available both a chirp and a PN sequence during the same VBLI in each successive field facilitates the more rapid and efficient calculations of ghost cancellation and of equalization, on a continuing basis. A television receiver for use with such composite GCR signals includes means for separating the chirp and PN sequence portions of the GCR signals from the remainder of the composite video signal, a ghost cancellation filter and an equalization filter connected in cascade to respond to the composite video signal and provided each with adjustable filtering weights, means responding to the separated chirp portions of the GCR signals to calculate a discrete Fourier transform (DFT) therefrom, means responding to that DFT to determine the adjustable filtering weights of the ghost cancellation filter, and means responding to the separated PN sequences to determine the adjustable filtering weights of the equalization filter.
REFERENCES:
patent: 4255791 (1981-03-01), Martin
patent: 4309769 (1982-01-01), Taylor, Jr.
patent: 4359778 (1982-11-01), Lee
patent: 4864403 (1989-09-01), Chao et al.
patent: 4896213 (1990-01-01), Kobo et al.
patent: 5032916 (1991-07-01), Matsuura et al.
patent: 5084901 (1992-01-01), Nagazumi
patent: 5099328 (1992-03-01), Kobo et al.
patent: 5103312 (1992-04-01), Citta
patent: 5121211 (1992-06-01), Koo
patent: 5138453 (1992-08-01), Kobayashi et al.
patent: 5170260 (1992-12-01), Tabata
patent: 5177611 (1993-01-01), Gibson et al.
patent: 5179444 (1993-01-01), Koo
patent: 5184221 (1993-02-01), Nishi
patent: 5196936 (1993-03-01), Kobayashi
patent: 5331416 (1994-07-01), Patel et al.
patent: 5335009 (1994-08-01), Sun et al.
patent: 0332219 (1989-09-01), None
patent: 0285866 (1990-11-01), None
patent: 000164 (1991-01-01), None
patent: 0072677 (1991-03-01), None
patent: 0159480 (1991-07-01), None
patent: 0167968 (1991-07-01), None
patent: 0239073 (1991-10-01), None
patent: 403293870 (1991-12-01), None
Patel Chandrakant Bhailalbhai
Yang Jian
Howrey Simon Arnold & White , LLP
Lee Michael H.
Samsung Electronics Co,. Ltd.
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