Video signal processing apparatus

Details Video signal processing apparatus Video signal processing apparatus

1987-10-29

1989-08-08

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, 340721, H04N 5272, H04N 974

Patent

active

048558311

ABSTRACT:
A superimposing video signal represents a superimposing shape. The superimposing video signal and a background video signal are mixed at a varible mixing rate. During an interval where the superimposing video signal corresponds to an edge of the superimposing shape, the mixing rate is varied. The superimposing video signal may be stored in a memory. The mixing rate may be varied in accordance with a mixing rate signal stored in a memory.

REFERENCES:
patent: 4591897 (1986-05-01), Edelson
patent: 4599611 (1986-07-01), Bowker et al.
patent: 4602286 (1986-07-01), Kellar et al.
patent: 4638360 (1987-01-01), Christopher et al.
patent: 4673983 (1987-06-01), Sarugaku et al.
patent: 4712130 (1987-12-01), Casey
"Character Generator" by Phillip Kurz; Television Broadcast Apr. 1986, pp. 56-62.

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