Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1980-11-26
1983-01-04
Martin, John C.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 29, H04N 9535, H04N 522
Patent
active
043674844
ABSTRACT:
A picture-in-picture color television receiver for simultaneously displaying on a screen a first and a second picture read out from a memory in a state that the second picture is inserted in the first picture, is disclosed. A DC restoration circuit for DC-restoring a color difference signal of the second picture DC-restores a color difference signal of the second picture at the reference level coincident with the reference level of the color difference signal of the first picture, thereby to make the white balance of the first picture coincident with that of the second picture.
REFERENCES:
patent: 3647944 (1972-03-01), Anderson
patent: 3778542 (1973-11-01), Hanseman
patent: 4267560 (1981-05-01), Ishikawa et al.
Kuroyanagi Tomomitsu
Miyagawa Hitoshi
Hitachi , Ltd.
Martin John C.
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