Method of and apparatus for processing video signals

Details Method of and apparatus for processing video signals Method of and apparatus for processing video signals

1985-09-11

1988-02-16

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358167, H04N 514

Patent

active

047258870

ABSTRACT:
An arrangement for processing video signals, the video signals having the form of digitally encoded samples and being arranged to produce a television picture by line and field sequential scanning includes a frame store, a write address generator and a read address generator. Input video samples are fed from an input to an interpolator for writing into the store. When a television picture is to be rotated and the rotation is effected by the sequence of write addresses to the store a situation can arise where there is no information available for writing into certain store locations. This results in holes appearing in the output signal where no picture related information is present. A hole detector is provided at the store output and controls an interpolator which inserts information derived from adjacent picture samples into the hole.

REFERENCES:
patent: 4199780 (1980-04-01), Taylor
patent: 4287529 (1981-09-01), Tatami et al.
patent: 4437121 (1984-03-01), Taylor et al.

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