Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1984-12-19
1987-04-21
Masinick, Michael A.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 23, H04N 1120, H04N 965
Patent
active
046600710
ABSTRACT:
A method for converting line sequential color signal to simultaneous signal is attained by selecting two color signals alternately every one horizontal scanning period. The color signals are applied to a balanced modulator. Two carriers with different phases are alternately switched every one horizontal scanning period and supplied to the balanced modulator to form carrier color signals with different phases every one horizontal scanning period. There are two carrier color signals of which one is a through carrier color signal and the other is produced by delaying the phase of the through carrier color signal by one horizontal scanning period then phase-shifting by 180 degrees. In an alternative embodiment, two balanced modulators are employed and a delayed replica of the color signals is applied to the second of the two modulators. Two carrier color signals are outputted from the two balanced modulators, and are mixed to produce simultaneous signal.
REFERENCES:
patent: 3845498 (1974-10-01), Justice
patent: 4012772 (1977-03-01), Chambers et al.
patent: 4095254 (1978-06-01), Romeas
Bauer Robert Michael
Fuji Photo Film Co. , Ltd.
Masinick Michael A.
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