Television – Image signal processing circuitry specific to television – Chrominance-luminance signal separation
Patent
1994-03-29
1995-09-05
Groody, James J.
Television
Image signal processing circuitry specific to television
Chrominance-luminance signal separation
348666, 348609, H04N 978
Patent
active
054483050
ABSTRACT:
An input of a charge coupled device (CCD) delay element is an additional signal of a reproduced luminance signal and a reproduced chrominance signal, while an output of the CCD delay element is separated by an LPF and a BPF into a delayed luminance signal and a delayed chrominance signal, thereby constituting a comb filter by using the input signal before an addition and delayed/reproduced signals. Accordingly, it is unnecessary to provide a filter for limiting a band width, which is inserted into a main signal path. Furthermore, since it is possible to constitute a comb filter which does not narrow a signal band width of the reproduced luminance signal and the reproduced chrominance signal, there can be provided a comb filter for removing a cross-talk and noises and which does not narrow a signal band width of the luminance signal and the chrominance signal.
REFERENCES:
patent: 4143397 (1979-03-01), Holmes
patent: 4571639 (1986-02-01), Nagashima
patent: 4737862 (1988-04-01), Koga
Patent Abstracts of Japan, vol. 7, No. 229 (E-203), Oct. 12, 1983, JP-A-58 117 790, Jul. 13, 1983.
Groody James J.
Hsia Sherrie
Kabushiki Kaisha Toshiba
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