Cable distribution system for wide-band message signals

Details Cable distribution system for wide-band message signals Cable distribution system for wide-band message signals

1976-03-16

1977-07-12

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

325308, H04N 710

Patent

active

040358380

ABSTRACT:
A cable-TV system comprises a relay station linked by several HF cables with a distribution center feeding several subscriber stations via two-wire local lines, each HF cable carrying a respective TV program modulated on a common carrier. The distribution center comprises several switching matrices which are remote-controlled from respective subscriber stations for transmitting selected programs to any of them. Each subscriber station includes for this purpose a generator of a carrier frequency, above the band of incoming frequencies, which is pulse-modulated with the aid of a keyboard to identify the desired programs and is demodulated at a control unit tied to the associated switching matrix at the distribution center.

REFERENCES:
patent: 3936747 (1976-02-01), McVoy
"Typical Applications of the Routing Switch" Cunningham Bulletin 131, Copyright 1965, pp. 24-25.

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