Electrical multi-channel signal transmission systems

Details Electrical multi-channel signal transmission systems Electrical multi-channel signal transmission systems

H - Electricity

04

N

350/27

H04N 5/38 (2006.01)

Patent

CA 1144603

ABSTRACT OF THE DISCLOSURE In an electrical multi-channel signal transmission system having channels with signal carriers of predetermined frequencies, each frequency is an integral multiple of a constant which is a measure of frequency spacing between channels with the addition or subtraction of an integral multiple of one or more other constants. The integral multiples of the one or more other constants are selected to cause the frequencies of significant intermodulation products produced by simultaneous treatment of carriers by electrical components, such as amplifiers, to be equal to other carrier frequencies. The frequencies are obtained from a plurality of oscillators with frequencies related to the constants. The invention is especially useful whit cable television systems transmitting programs on low, mid and high band channels. # 1089 P/2 CA

210805

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