Audio and visual intercommunication and surveillance system
First Claim
1. In combination with an antenna distribution system connected to a plurality of standard receivers having input and output components interconnected by interstage switch means, a control station located adjacent one of said standard receivers, a system interconnecting said control station with the other standard receivers at a plurality of remote stations comprising transducer means at each of said control and remote stations, mode control means at the control station connected to the interstage switch means for disconnecting the input and output components from each other in said one of the receivers and in selected ones of the other receivers, station selection means at the control station connected to the interstage switch means for rendering the interstate switch means associated with said selected ones of the other of the receivers effective to disconnect the components thereof from each other, communication circuit means operative in response to actuation of the station selection means for interconnecting the disconnected output components at selected remote stations with the transducer means at the control station to establish intercommunication between the control station and the selected remote stations, surveillance circuit means connected to the station selection means operative in response to actuation of the station selection means for connecting the disconnected output component of said one of the receivers at the control station to the transducer means at selected remote stations at which the input and output components are not disconnected, signalling means at each of the remote stations connected to the station selection means for transmitting an alerting signal to the control station identifying the remote station from which the signal originates, and message control means at the control station connected to the transducer means for controlling two-way transmission of intelligence signals between said control station and the selected remote stations when said intercommunication is established.
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Accused Products
Abstract
A communication network interconnecting a master control station with a plurality of remote substations, each station having a television receiver connected to a master antenna distribution system. The receiver components are selectively converted into an arrangement with closed circuit television cameras at each station for televised intercommunication under control of the operator at the control station, the cameras also being utilized in a substation surveillance mode of operation. A video tape recorder having a playback capability is operationally coordinated into the network for replay of recorded programs at any station.
26 Citations
10 Claims
- 1. In combination with an antenna distribution system connected to a plurality of standard receivers having input and output components interconnected by interstage switch means, a control station located adjacent one of said standard receivers, a system interconnecting said control station with the other standard receivers at a plurality of remote stations comprising transducer means at each of said control and remote stations, mode control means at the control station connected to the interstage switch means for disconnecting the input and output components from each other in said one of the receivers and in selected ones of the other receivers, station selection means at the control station connected to the interstage switch means for rendering the interstate switch means associated with said selected ones of the other of the receivers effective to disconnect the components thereof from each other, communication circuit means operative in response to actuation of the station selection means for interconnecting the disconnected output components at selected remote stations with the transducer means at the control station to establish intercommunication between the control station and the selected remote stations, surveillance circuit means connected to the station selection means operative in response to actuation of the station selection means for connecting the disconnected output component of said one of the receivers at the control station to the transducer means at selected remote stations at which the input and output components are not disconnected, signalling means at each of the remote stations connected to the station selection means for transmitting an alerting signal to the control station identifying the remote station from which the signal originates, and message control means at the control station connected to the transducer means for controlling two-way transmission of intelligence signals between said control station and the selected remote stations when said intercommunication is established.
- 7. In combination with an antenna distribution system connected to a plurality of standard receivers having input and output components interconnected by interstage switch means, a control station located adjacent one of said standard receivers, a system interconnecting said control station with the other receivers at a plurality of remote stations, comprising mode control means at the control station connected to the interstage switch means for disconnecting the input and output components from each other in said one of the receivers and in selected ones of the other receivers at selected remote stations, station selection means at the control station connected to the interstage switch means for rendering the interstage switch means associated with said selected ones of the other of the receivers effective to disconnect the components thereof from each other, visual means located at each of the stations and connected to the station selection means for surveillance of selected remote stations from the control station without interruption of antenna signal reception by the receivers, and message control means connected to the visual means and the station selection means for reconnecting the components of the receivers disconnected by the interstage switch means with the visual means to establish intercommunication between said stations.
- 9. The combination of clam 7 including recording means connected to the mode control and station selection means at the control station for recording audio and video signals originating at the control station and the remote stations, and replay means connected to the recording means for reproducing said recorded signals through the disconnected components of the receivers.
Specification