Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1974-05-09
1976-10-19
Griffin, Robert L.
Facsimile and static presentation processing
Static presentation processing
Attribute control
H04N 950
Patent
active
039874818
ABSTRACT:
A silicon monolithic integrated circuit color television demodulator includes three sets of full-wave synchronous switched demodulators for demodulating the red, blue and green color signals or color difference signal present in a composite television signal. Each of the demodulators consists of two pairs of switching transistors, and the transistors in each of the pairs are rendered alternately conductive by reference signals derived from a reference oscillator in a color television receiver. Signals from the reference oscillator at the phases of +(R-Y) and -(B-Y) color difference signals are applied to the red and blue demodulators, respectively. The reference signal for the green demodulator is obtained by applying the +(R-Y) reference signal to one transistor of each of the two pairs of switching transistors in the green demodulator and by applying a portion of the -(B-Y) reference signal to the other transistor in each of the pairs. The modulated color television signal then is supplied in opposite phase to the two pairs of switching transistors in each of the demodulators.
REFERENCES:
patent: 3506776 (1970-04-01), Rennick
patent: 3558810 (1971-01-01), Cecchin et al.
patent: 3628046 (1971-12-01), Bilotti
patent: 3764925 (1973-10-01), Von Nikelsberg et al.
Griffin Robert L.
Jones, Jr. Maurice J.
Motorola Inc.
Saffian Mitchell
Weiss Harry M.
LandOfFree
Color television signal demodulation system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color television signal demodulation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color television signal demodulation system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-106942