Television – Image signal processing circuitry specific to television – Special effects
Patent
1993-06-02
1994-10-11
Powell, Mark R.
Television
Image signal processing circuitry specific to television
Special effects
348659, H04N 5265
Patent
active
053551753
ABSTRACT:
A video mixing apparatus mixes a graphics video image and a playback video image at a plurality of mixture ratios in one image plane. Fade data indicative of the mixing ratio of at least one line of the playback video signal and the graphics video signal is sequentially generated in accordance with a predetermined order. The fade data is held into holding means and is outputted from the holding means synchronously with a horizontal sync signal. The levels of the playback video signal and the graphics video signal are individually adjusted in accordance with the fade data outputted from the holding means and the adjusted signals are added. The playback video signal and the graphics video signal are mixed at the mixing ratio set every line of one image plane. In a video apparatus using the graphics video image and playback video image, various kinds of effective video images can be formed by mixing the graphics video image of every video image such as background, person, characters, or the like and the playback video image.
REFERENCES:
patent: 4680622 (1987-07-01), Barnes et al.
patent: 5027213 (1991-06-01), Kamin
patent: 5097349 (1992-03-01), Nomura et al.
patent: 5168363 (1992-12-01), Kojima et al.
patent: 5220433 (1993-06-01), Mogamiya et al.
Furuta Yoshiki
Matoba Hirofumi
Matsuura Hiroyasu
Miyazaki Masakazu
Nagase Yoshinobu
Cohen Cheryl
Hudson Soft Co., Ltd
Pioneer Electronic Corp.
Powell Mark R.
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