Television – Image signal processing circuitry specific to television – Special effects
Patent
1993-08-17
1994-10-04
Kostak, Victor R.
Television
Image signal processing circuitry specific to television
Special effects
348590, H04N 5272, H04N 5265
Patent
active
053530683
ABSTRACT:
A video signal combining apparatus for combining at least three video signals (V.sub.A, V.sub.B, V.sub.C) including a key signal (K.sub.A, K.sub.B, K.sub.C) and depth signal (Z.sub.A, Z.sub.B, Z.sub.C) includes at least two cascade-connected 2-input combiners (1, 2) which combine two of the video signals so that the output of a preceding stage becomes one input of the next stage; a decision circuit (3) which decides on a pixel by pixel basis on an order of arrangement in a depth direction among images from the depth signal of the input video signals; and a switching circuit (4) which rearranges the input video signals in an order of arrangement based on the result of decision of the decision circuit (3) and outputs the result in a parallel manner to the inputs of the above-described combiners (1, 2) so that the video signals are sequentially combined in the decided order of arrangement.
REFERENCES:
patent: 4774583 (1988-09-01), Keller et al.
patent: 4851912 (1989-06-01), Jacksen et al.
patent: 5027213 (1991-06-01), Kamin
patent: 5077608 (1991-12-01), Dubner
patent: 5214512 (1993-05-01), Freeman
Eslinger Lewis H.
Flynn Nathan J.
Kostak Victor R.
Maioli Jay H.
Sony Corporation
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