Signal separator and television receiver having the same

Details Signal separator and television receiver having the same Signal separator and television receiver having the same

1996-07-19

1998-11-10

Faile, Andrew I.

Television

Image signal processing circuitry specific to television

Chrominance-luminance signal separation

348556, H04N 978, H04N 546

Patent

active

058351620

ABSTRACT:
Upon NTSC broadcasting, switches are respectively electrically connected to the N sides and a three-dimensional comb filter is made up of memories, a subtracter, etc., whereby a carrier chrominance signal is separated from a video signal in accordance with a frame-to-frame process. In this case, the video signal is divided into two signals, which are in turn written into the memories. Upon EDTV2 broadcasting, the switches are respectively electrically connected to the E sides and a three-dimensional comb filter is made up of the memory and the subtracter, whereby a composite signal obtained by combining a carrier chrominance signal and a horizontal resolution supplementary signal is separated from the video signal. The switch is electrically connected to the E side and a three-dimensional comb filter is made up of the memory, a subtracter, etc., whereby a horizontal resolution supplementary signal is separated from a composite signal in accordance with a field-to-field process. The capacity of each of the memories can be efficiently used and hence a system can be integrated into compact form.

REFERENCES:
patent: 5003389 (1991-03-01), Isobe et al.
patent: 5361099 (1994-11-01), Kim
patent: 5510847 (1996-04-01), Nio et al.

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