Television – Image signal processing circuitry specific to television – Special effects
Patent
1997-08-26
1999-07-13
Faile, Andrew I.
Television
Image signal processing circuitry specific to television
Special effects
348592, 348274, H04N 976
Patent
active
059233826
ABSTRACT:
An apparatus and method are shown for superimposing an overlapping image signal on an original image signal while preserving the original image. An embodiment of a method according to the present invention includes generating a color difference signal for a shape of the overlapping image responsive to a color difference signal of the original image and a signal which includes a gain coefficient for a magnitude of a color difference to be expressed in an edge of the overlapping image and generating a color difference signal for the edge of the overlapping image responsive to a signal which includes a magnitude and phase of the color difference of the edge of the overlapping image. The method then involves selecting one of the color difference signal of the original image, the color difference signal for the shape of the overlapping image, and the color difference signal for the edge of the overlapping image responsive to a signal which includes the shape and position of the overlapping image, wherein the color difference signal for the shape of the overlapping image is selected to coincide with positions inside of the position of the edge of the overlapping image, the color difference signal for the edge of the overlapping image is selected to coincide with the position of the edge of the overlapping image and the color difference signal of the original image is selected for display at positions that do not coincide with the position of the edge of the overlapping image and the positions inside the edge of the overlapping image.
REFERENCES:
patent: 5418574 (1995-05-01), Miyabata et al.
patent: 5495297 (1996-02-01), Fujimori et al.
patent: 5574510 (1996-11-01), Abe
patent: 5598224 (1997-01-01), Choi
patent: 5812213 (1998-09-01), Moriwake
Brown Reuben M.
Faile Andrew I.
Samsung Electronics Co,. Ltd.
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