Circuit for controlling the time interval between rotational mov

Details Circuit for controlling the time interval between rotational mov Circuit for controlling the time interval between rotational mov

1989-03-31

1993-04-27

Coles, Sr., Edward L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358181, 358183, H04N 974, H04N 5262

Patent

active

052067149

ABSTRACT:
There is disclosed a circuit for controlling the time interval between rotational movements of a plurality of subordinate pictures in a picture-in-picture-type television. The inventive circuit includes a microcomputer, a memory for storing the PIP video digital data, a control decoder and read/write controller for generating a control signal to control the start of writing or reading subordinate picture data onto or from the memory, a switching stage for switching sequentially the chrominance signals, an analog/digital converter for receiving the output of the switching stage, a first data converting and latching device, a writing clock pulse and writing address signal generator, a second data converting and latching device, first to third digital/analog converters, a reading clock pulse and reading address signal generator, and a memory control timing and address selector.

REFERENCES:
patent: 4725888 (1988-02-01), Hakamada
patent: 4746983 (1988-05-01), Hakamada
patent: 4750039 (1988-06-01), Willis
patent: 4768095 (1988-08-01), Wada et al.
patent: 4774582 (1988-09-01), Hakamada et al.
patent: 4794386 (1988-12-01), Bedrij et al.
patent: 4821102 (1989-04-01), Ichikawa et al.
patent: 4918531 (1990-04-01), Johnson
patent: 4998171 (1991-03-01), Kim et al.

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