Television distribution system and processing unit used in said distribution system
AssigneeCasanova
InventorHenri Lee
Life of this patent
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AssigneeCasanova
InventorHenri Lee
Estimating the term…
The invention concerns a system for distribution of television-type (TV) video signals comprising: a first input processing unit (1) including a coaxial input terminal (10), at least a low-current output terminal (11) for twisted wire pairs and processing means (14) for processing the TV signals derived from the coaxial cable so as to transform them into signals having substantially the same transmission characteristics on the same frequency band on a twisted wire pair, at least a second output processing unit (3) including a low-current input port (33) for twisted wire pairs (12) connected to the first input processing unit (1) to transform them into signals substantially identical to those derived from said coaxial cable (41), and at least a connection cable (23) consisting of twisted wire pairs connecting the first processing unit (1) to the second processing unit (3).
System for the distribution of television (TV) type video signals with a frequency band of up to about 5 to 900 MHz, the said system comprising:
TV signals processing unit (1) with a frequency band varying from 5 to 65 MHz for the return channel and 86 to 862 MHz for the down channel, the said processing unit comprising a coaxial input terminal (10), processing means (14) for transforming TV signals output from the input terminal in signals with substantially the same transmission characteristics on the same frequency band and that can be transmitted for a twisted wires pair, and at least one output terminal (11) for twisted wire pairs, characterised in that it also comprises means of cutting off (16) the signal transmission acting on the input side of output terminals (11) to cut off the signal transmission at an output terminal that is not connected indirectly, advantageously through a second output processing unit (3) connected to the said terminal through a cable consisting of twisted wire pairs, to a coaxial cable (53) connected to a TV set (5).
Dependencies are inferred from the claim text.