Television – Image signal processing circuitry specific to television – Chrominance-luminance signal separation
Patent
1994-01-14
1995-06-20
Groody, James J.
Television
Image signal processing circuitry specific to television
Chrominance-luminance signal separation
348665, H04N 977, H04N 978
Patent
active
054264693
ABSTRACT:
A video signal processor is used in connection with a television set or similar apparatus for processing a video signal input for every horizontal line period. A video signal is processed by operations such as comparison and addition of a video signal, a first delay signal which is delayed by a one-horizontal line period and a second delay signal which is delayed by a two-horizontal line period. Since there is a horizontal correlation in a video signal, it is possible to separate a color signal from a luminance signal and remove the noise component from the luminance signal by a predetermined operation. The comparison is substantially the subtraction of the signals which are output one after another by a delay of one horizontal line period in series, thereby avoiding such trouble as color edging.
REFERENCES:
patent: 4050084 (1977-09-01), Rossi
patent: 4916527 (1990-04-01), Matsuo
patent: 4980737 (1990-12-01), Umezawa
patent: 5047840 (1991-09-01), Miki
Groody James J.
Hsia Sherrie
Mitsubishi Denki & Kabushiki Kaisha
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