H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/41, 333/51,
H04N 9/09 (2006.01) H04N 9/75 (2006.01)
Patent
CA 1137217
RCA 73,034 Abstract A remotely controlled chroma key soft edger is described for use with an analog switcher. The keying signal is low pass filtered and differentially summed with substantially an unfiltered keying signal and the resultant high frequency components are summed with the low pass filtered signal. The gain of the peaking signal is remotely controlled to adjust the summed rise time of the keying signal.
334076
Bazin Lucas J.
Herrmann Donald C.
Morneau Roland L.
Rca Corporation
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