Video special effects apparatus

Details Video special effects apparatus Video special effects apparatus

H - Electricity

04

N

350/53

H04N 5/262 (2006.01)

Patent

CA 1317023

Abstract Video effects apparatus comprises a pattern generator for generating a mix control signal which, when used to control the combination of first and second input video signals to provide an output video signal, defines the geometrical shape in a composite output scene of a transition between a first component scene represented by the first input video signal and a second component scene represented by the second video signal. The pat- tern generator responds to a size control signal by causing the mix control signal to vary in a manner such that the area of the composite output video scene that is occupied by the first component scene changes relative to the area of the second compo- nent scene while the geometrical shape of the tran- sition between the component scenes remains the same. A shadow generator generates a signal which adjusts the visual characteristics of the second component scene synchronously with the variation of the control signal.

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