Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1978-01-26
1980-10-14
Martin, John C.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358166, 358242, 128660, H04N 530, H04N 514, A61B 1000
Patent
active
042284597
ABSTRACT:
An electronic circuit is used to interrupt the video signal going to a T.V. monitor about 500 times per scan line. Each interruption causes a black spot in the display. The black lines between scan lines on the T.V. screen cooperate with the black spots in each scan line to form electronically a black matrix background for the T.V. picture. The black matrix enhances the picture quality making a sharper, clearer picture.
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Martin John C.
Unirad Corporation
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