Video wipe processing apparatus

Details Video wipe processing apparatus Video wipe processing apparatus

1988-11-17

1989-08-08

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, H04N 522

Patent

active

048558346

ABSTRACT:
A video processing system for generating an output sequence of video frames which, over time, a decreasing proportion of successive frames is derived from a first video input (21) and an increasing proportion of said frames is drived from a second input (22); an effect known as a wipe. A framestore (31) stores a frame of wipe-shape pixel signals wherein the value of each pixel represents the time at which the spacially corresponding output pixel is derived from the second video input signal. The wipe shape pixel signal are compared with a reference value, in response to which input signals are combined, and the reference value is adjusted between frames to create the wipe effect.

REFERENCES:
patent: 4017680 (1977-04-01), Anderson et al.
patent: 4360831 (1982-11-01), Kellar
patent: 4395733 (1983-07-01), Elenbaas
patent: 4602286 (1986-07-01), Kellar et al.
patent: 4667221 (1987-05-01), Cawley et al.
patent: 4764809 (1988-08-01), Haycock et al.
patent: 4805022 (1989-02-01), Abt
patent: 4809072 (1989-02-01), Pohl

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