Connection unit for a television signal distribution system

Details Connection unit for a television signal distribution system Connection unit for a television signal distribution system

1993-08-17

1995-01-31

Groody, James J.

Television

Two-way video and voice communication

User positioning

348 12, 455 32, H04N 710

Patent

active

053862260

ABSTRACT:
For switching, for example four satellite signal sources, there is a switch for each user. This switch selects a source as a function of the value of a control signal applied to its RF signal output and connects the selected source to this output. It is provided with a connection unit (75) for each user who has the disposal of a television apparatus (74) and a satellite decoder (84). This connection unit comprises an adjustable control signal generator (78) which is connected to the input (81) of the satellite decoder (84) via a signal-blocking inductance and to a two-wire connection (83) for the control current produced by the decoder and determines the control signal to be applied as a function of the value of the parameters generated by the satellite decoder.

REFERENCES:
patent: 4542300 (1985-09-01), Nagatomi
patent: 4864632 (1989-09-01), Moriyama
patent: 5058198 (1991-10-01), Rocci
patent: 5073930 (1991-12-01), Green

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