Apparatus for inserting part of one video image into another vid

Details Apparatus for inserting part of one video image into another vid Apparatus for inserting part of one video image into another vid

1986-09-30

1989-05-02

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, 358182, H04N 5272

Patent

active

048273449

ABSTRACT:
Computer generated video objects may be superimposed over a background video image so as to create the illusion of a single composite scene. The leading edge of an object is detected and for a period of time the object and background video signals are mixed. After that period, only the object video is tranmsitted. Upon detection of the object's trailing edge, the two video signals are again mixed for a period of time. After this latter period, only the background video signal is transmitted until another object's edge is detected.

REFERENCES:
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patent: 3941925 (1976-03-01), Busch et al.
patent: 3989888 (1976-11-01), Busch et al.
patent: 4199788 (1980-08-01), Tsujimura
patent: 4356511 (1982-10-01), Tsujimura
patent: 4358788 (1982-11-01), Burrowes
patent: 4392156 (1983-07-01), Duca
patent: 4432016 (1984-02-01), Shanley, II
patent: 4488169 (1984-12-01), Yamamoto
patent: 4602286 (1986-07-01), Kellar
"Computer Software for Graphics," Scientific American, Sep. 1984, at page 150 Top of Right Most Column Briefly Mentions Varying Pixel Intensity to Minimize Aliasing.

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