Apparatus for generating control signals of a video mixer system

Details Apparatus for generating control signals of a video mixer system Apparatus for generating control signals of a video mixer system

1990-01-09

1991-08-13

Wieder, Kenneth A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, 358 96, H04N 5262

Patent

active

050400665

ABSTRACT:
A memory for pixel factors has somewhat more than enough capacity for storing pixel factors for all the pixels of a television picture. A special effect pattern for use in fading from one input picture to another is stored in the memory either as a contour or as an area within a contour. Additional memory capacity is used for start addresses for shifting the pattern. The memory is read out line by line to provide a multiplier control signal for one video input of a mixer and a complementary multiplier control signal for another video input of a video mixer. While one set of pixel factor signals is read out from the memory it is possible to write in an increased or diminished pattern contour or area to provide special effect fading.

REFERENCES:
patent: 4602286 (1986-07-01), Kellar et al.
patent: 4812909 (1989-03-01), Yokobayashi et al.
patent: 4855834 (1989-08-01), Cawley et al.
patent: 4862269 (1989-08-01), Sonoda et al.
patent: 4918518 (1990-04-01), Phillips
patent: 4949180 (1990-08-01), Miles
patent: 4954898 (1990-09-01), Nakata

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