Switchable signal source module for use with cable television co

Details Switchable signal source module for use with cable television co Switchable signal source module for use with cable television co

1987-06-04

1988-11-08

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455 4, 358 86, H04B 1116

Patent

active

047838469

ABSTRACT:
Remotely switchable signal source modules are mounted to a cable television converter to enable a viewer to select between alternate television signal sources. Power for the module is provided via the converter's RF input terminal, which mates with a corresponding terminal on the module. An RF bypass module enables the viewer to utilize the features of a cable ready television when connected to a cable television network. Simultaneous viewing and recording of different channels can also be accommodated. An input A/B switch module enables the viewer to select between alternate cable system inputs. An output A/B switch module provides compliance with FCC requirements permitting viewing of off-the-air channels not carried on a cable system.

REFERENCES:
patent: 4419768 (1983-12-01), Yamashita et al.
patent: 4484218 (1984-11-01), Boland et al.
patent: 4527204 (1985-07-01), Kozakai et al.
patent: 4606072 (1986-08-01), Martin et al.
patent: 4630313 (1986-12-01), Damoci

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