Picture superposing circuit

Details Picture superposing circuit Picture superposing circuit

1991-07-30

1994-05-03

Groody, James J.

Television

Image signal processing circuitry specific to television

Special effects

348205, 348578, H04N 974, H04N 5268

Patent

active

053092384

ABSTRACT:
A picture superposing circuit for receiving a main video signal and a sub-video signal respectively representative of two different picture images and storing the sub-video signal in a field memory and thereafter reading out according to a main synchronization signal to display the main video signal from an odd field and the sub-video signal from an even field of one frame so that two pictures can be superposed on a single screen.

REFERENCES:
patent: 3654386 (1972-04-01), Baum
patent: 4575771 (1986-03-01), Oota et al.
patent: 4713695 (1987-12-01), Macheboeuf
patent: 4724487 (1988-02-01), Casey
patent: 4992781 (1991-02-01), Iwasaki et al.
patent: 5041910 (1991-08-01), Suda et al.

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