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

1978-08-15

1979-08-07

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, H04N 522

Patent

active

041639928

ABSTRACT:
A chroma-key tracking system for electronically compressing a television picture to predetermined dimensions and for moving the compressed picture to a specified area on the television screen where the compressed picture is inserted into a second picture present on the screen. The invention advantageously monitors the aspect ratio (the ratio of width to height of a picture frame) of the compressed picture and ensures that the compressed and inserted picture maintains a prescribed standard aspect ratio.

REFERENCES:
patent: 4021841 (1977-05-01), Weinger
patent: 4079413 (1978-03-01), Yamashita

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