Digital video effects system employing a chroma-key tracking tec

Details Digital video effects system employing a chroma-key tracking tec Digital video effects system employing a chroma-key tracking tec

1981-09-10

1983-10-11

Psitos, Aristotelis M.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, H04N 522, H04N 9535

Patent

active

044096186

ABSTRACT:
A tracking system for producing special effects in a television picture by inserting a second television picture into a first television picture. The first and second pictures are represented by first and second video signals. A key signal representing a key frame to be positioned on the first picture is produced and the electrical noise is removed from the key signal. A position signal having two horizontal position signal values and two vertical position signal values is produced and represents the position of a circumscribed frame of the key frame. A compressed second video signal representing a compressed second picture is produced in response to the second video signal and the position signals. The horizontal and vertical position signals produce a frame signal, and the frame signal is applied to the noise removing circuitry. In response to the key signal the first video signal and the second video signal are combined to produce the special effects.

REFERENCES:
patent: 3437873 (1969-04-01), Eggert
patent: 3654386 (1972-04-01), Baum
patent: 3787619 (1974-01-01), Wolff
patent: 4028727 (1977-06-01), Skrydstrup
patent: 4063280 (1977-12-01), Hattotori et al.
patent: 4103830 (1978-12-01), Derickson
patent: 4200890 (1980-04-01), Inaba et al.

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