Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1988-12-21
1990-10-16
Chin, Tommy P.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 81, H04N 974
Patent
active
049639773
ABSTRACT:
Video effects apparatus comprises a wipe generator for generating a wipe signal and a matte generator for generating a matte signal. The matte generator receives the wipe signal and the color represented by the matte signal is dependent on the wipe signal. First and second control signals are provided in response to the wipe signal. A first video mixer has signal input terminals connected to receive a first video signal and the matte signal respectively and a mix control input terminal connected to receive the first control signal as a mix control signal, and a second video mixer has signal input terminals connected to receive respectively a second video signal and the output signal of the first video mixer. The second mixer has a mix control input terminal connected to receive the second control signal as a mix control signal.
REFERENCES:
patent: 4636839 (1987-01-01), Cole
patent: 4758880 (1988-07-01), McFetridge
patent: 4769692 (1988-09-01), McFetridge
patent: 4823183 (1989-04-01), Jackson
patent: 4873568 (1989-10-01), Jackson
Abt John
Jackson Richard A.
Chin Tommy P.
Gray Francis I.
The Grass Valley Group Inc.
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