Processing of video image signals

Details Processing of video image signals Processing of video image signals

1989-08-25

1990-04-17

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 5272

Patent

active

049185306

ABSTRACT:
A video image processing system for generating so-called "multi-freeze" digital video effects comprises a frame store (14) within which an image signal can be stored for application to a combining circuit (4) together with a background image signal (1) providing a background against which a trail of frozen images is to be displayed. The trail of images is derived by recycling images stored in the memory (14) through a further combining circuit (19) wherein the stored image is combined with incoming image signals applied to both combining means (4,19). Decay and patterning of the frozen images can be effected by circuits (24,25) for attenuating and profiling the key signals accompanying the image signals.

REFERENCES:
patent: 4698682 (1987-10-01), Astle
patent: 4743970 (1988-05-01), Barnett

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