Mixing of secam color-t.v. signals

Details Mixing of secam color-t.v. signals Mixing of secam color-t.v. signals

H - Electricity

04

N

350/53

H04N 9/76 (2006.01)

Patent

CA 1098205

ABSTRACT OF THE DISCLOSURE A plurality of SECAM color-T.V. signals are -to be mixed. Each comprises an AM luminance component and an FM color component. For each individual signal, the color component is separated from the luminance component, frequency-demodulated, am- plitude-modulated, and then superimposed upon the respective luminance component to form a frequency multiplexed modified signal. The plurality of thusly modified signals are then mixed using a single mixing channel. The mixed luminance component and the mixed color component are separated on the basis of frequency, and the mixed color component is amplitude-demodulated,then frequency- modulated, and then superimposed upon the mixed luminance component, to yield a SECAM color-T.V. signal which constitutes a mix of the original signals. -1-

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