Communications TV monitoring and control system
First Claim
1. In a communications television monitoring and control system for a video signal distribution system constructed to transmit a plurality of video signal program channels from a head end through a common cable section connected through a distribution section to a plurality of television sets at various viewing locations:
- a plurality of control devices, including an RF switch and a video signal converter at various television set locations;
a plurality of return RF signal transmitters, each connected for message activation by an associated one of said RF switches with one of said plurality of control devices;
with said RF signal transmitters connected to feed message RF signaling, including preassigned RF signal transmitter location message signalling, back through said video signal distribution system when said RF switch is switched to a message activate state with video channel selection; and
, return RF signal receiver means connected to said video signal distribution system for receiving return RF signals from said plurality of return RF signal transmitters for application to central message processing means.
8 Assignments
0 Petitions
Reexamination
Accused Products
Abstract
A communications control system applicable to an existing master antenna television (MATV) system normally installed in a building, or CATV systems that use special entertainment feature inputs including movies and/or sporting events and special services on a controlled pay or non-pay basis, as desired. The system employs one-way intelligence transmission from TV set locations to a central processor receiver and opposite direction program transmission in a selective control monitored mode with minimal additional equipment requirements over those of a basic TV cable system.
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Citations
11 Claims
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1. In a communications television monitoring and control system for a video signal distribution system constructed to transmit a plurality of video signal program channels from a head end through a common cable section connected through a distribution section to a plurality of television sets at various viewing locations:
- a plurality of control devices, including an RF switch and a video signal converter at various television set locations;
a plurality of return RF signal transmitters, each connected for message activation by an associated one of said RF switches with one of said plurality of control devices;
with said RF signal transmitters connected to feed message RF signaling, including preassigned RF signal transmitter location message signalling, back through said video signal distribution system when said RF switch is switched to a message activate state with video channel selection; and
, return RF signal receiver means connected to said video signal distribution system for receiving return RF signals from said plurality of return RF signal transmitters for application to central message processing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a plurality of control devices, including an RF switch and a video signal converter at various television set locations;
Specification