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US 5,351,234 AGranted
System for integrated distribution of switched voice and television on coaxial cable
AssigneeNynex Corporation
InventorsJohn D. Beierle, William C. G. Ortel
Life of this patent
Estimating the term…
Abstract
A system for voice distribution amongst a plurality of telephone subscriber locations operating on a broadband cable network wherein RF transmitting and RF receiving channels for carrying voice and signalling information are established at the subscriber locations and coupled with the broad band network and a central switch is also coupled with the broadband network and enables each RF transmitting channel to be selectively coupled to any of the RF receiving channels.
Claims31
A system comprising:
- a plurality of telephone subscriber locations, each telephone subscriber location including means for establishing an RF transmitting channel and an RF receiving channel associated with the subscriber location for conveying signalling and analog voice information from and to, respectively, the subscriber location;
- the RF transmitting channels of said subscriber locations forming one or more transmitting frequency-division-multiplexed signals and the RF receiving channels of said subscriber locations forming one or more receiving FDM signals;
- a broad band cable network for carrying the RF receiving and transmitting channels of said subscriber locations via said one or more transmitting frequency-division-multiplexed signals and said one or more receiving frequency-division-multiplexed signals;
- and central switch means responsive to said cable network for enabling each RF transmitting channel in the one or more transmitting frequency-division-multiplexed signals on the cable network to be selectively coupled to any of the RF receiving channels in the one or more receiving frequency-division-multiplexed signals on the cable network, whereby voice communication between the subscriber locations of the coupled channels is enabled, said central switch means including:
- first means for establishing for each RF transmitting channel a transmitting digital channel for carrying digital voice information corresponding to the analog voice information carried by the RF transmitting channel and for establishing first digital control channels for carrying the signalling information of the RF transmitting channels, said transmitting digital channels and said first digital control channels forming one or more transmitting time-division-multiplexed signals each of which containing a number of transmitting digital channels and a first control channel carrying the signalling information for said number of transmitting digital channels, said first means including transmultiplexer means for converting said one or more transmitting frequency-division-multiplexed signals into said one or more transmitting time-division-multiplexed signals;
- digital switch means for establishing for each RF receiving channel a receiving digital channel for carrying digital voice information corresponding to the analog voice information carried by the RF receiving channel and for establishing one or more second digital control channels for carrying the signalling information of the RF receiving channels, said receiving digital channels and said second digital control channels forming one or more receiving time-division-multiplexed signals each of which containing a number of receiving digital channels and a second control channel carrying the signalling information for said number of receiving digital channels, said digital switch means selectively coupling each transmitting digital channel in said one or more transmitting time-division-multiplexed signals to any of the receiving digital channels in said one or more receiving time-division-multiplexed signals;
- and said transmultiplexer means of said first means converting said one or more receiving time-division-multiplexed signals to said one or more receiving frequency-division-multiplexed signals.
4 more elements
A method comprising:
- for each of a plurality of telephone subscriber locations, establishing an RF transmitting channel and an RF receiving channel associated with the subscriber location for conveying signalling and voice information from and to, respectively, the subscriber location;
- the RF transmitting channels of said subscriber locations forming one or more transmitting frequency-division-multiplexed signals and the RF receiving channels of said subscriber locations forming one or more receiving frequency-division-multiplexed signals;
- carrying the RF receiving and transmitting channels of said user locations on a broad band cable network via said one or more transmitting frequency-division-multiplexed signals and one or more receiving frequency-division-multiplexed signals;
- and using a central switch means to enable each RF transmitting channel in the one or more transmitting frequency-division-multiplexed signals on the cable network to be selectively coupled to any of the RF receiving channels in the one or more receiving frequency-division-multiplexed signals on the cable network, whereby voice communication between the subscriber locations of the coupled channels is enabled, said enabling switch of said central switch means including:
- establishing for each RF transmitting channel a transmitting digital channel for carrying digital voice information corresponding to the analog voice information carried by the RF transmitting channel and establishing first digital control channels for carrying the signalling information of the RF transmitting channels, said transmitting digital channels and said first digital control channels forming one or more transmitting time-division-multiplexed signals each containing a number of transmitting digital channels and a first control channel carrying the signalling information for said number of transmitting digital channels, said steps of establishing including using a transmultiplexer means for converting said one or more transmitting frequency-division-multiplexed signals to said one or more transmitting time-division-multiplexed signals;
- using a digital switch means for establishing for each RF receiving channel a receiving digital channel for carrying digital voice information corresponding to the analog voice information carried by the RF receiving channel and for establishing one or more second digital control channels for carrying the signalling information of the RF receiving channels, said receiving digital channels and said second digital control channels forming one or more receiving time-division-multiplexed signals each of which containing a number of receiving digital channels and a second control channel carrying the signalling information for said number of receiving digital channels, and further using said digital switch means to selectively couple each transmitting digital channel in said one or more transmitting time-division-multiplexed signals to any of the receiving digital channels in said one or more receiving time-division-multiplexed signals;
- and using said transmultiplexer means to convert said one or more receiving time-division-multiplexed signals to said one or more receiving frequency-division-multiplexed signals.
4 more elements
Apparatus for use with telephone subscriber locations, each telephone subscriber location including means for establishing an RF transmitting channel and an RF receiving channel associated with the subscriber location for conveying signalling and analog voice information from and to, respectively, the subscriber location, the RF transmitting channels of said subscriber locations forming one or more transmitting frequency-division-multiplexed signals and the RF receiving channels of said subscriber locations forming one or more receiving frequency-division-multiplexed signals;
- and with a broad band cable network for carrying the RF receiving and transmitting channels of said subscriber locations via said one or more transmitting frequency-division-multiplexed signals and said one or more receiving frequency-division-multiplexed signals, said apparatus comprising:
- central switch means responsive to said cable network for enabling each RF transmitting channel in the one or more transmitting frequency-division-multiplexed signals on the cable network to be selectively coupled to any of the RF receiving channels in the one or more receiving frequency-division-multiplexed signals on the cable network, said central switch means including:
- first means for establishing for each RF transmitting channel a transmitting digital channel for carrying digital voice information corresponding to the analog voice information carried by the RF transmitting channel and for establishing first digital control channels for carrying the signalling information of the RF transmitting channels, said transmitting digital channels and said first digital control channels forming one or more transmitting time-division-multiplexed signals each of which containing a number of transmitting digital channels and a first control channel carrying the signalling information for said number of transmitting digital channels, said first means including transmultiplexer means for converting said one or more transmitting frequency-division-multiplexed signals into said one or more transmitting time-division-multiplexed signals;
- digital switch means for establishing for each RF receiving channel a receiving digital channel for carrying digital voice information corresponding to the analog voice information carried by the RF receiving channel and for establishing one or more second digital control channels for carrying the signalling information of the RF receiving channels, said receiving digital channels and said second digital control channels forming one or more receiving time-division-multiplexed signals each of which containing a number of receiving digital channels and a second control channel carrying the signalling information for said number of receiving digital channels, said digital switch means selectively coupling each transmitting digital channel in said one or more transmitting time-division-multiplexed signals to any of the receiving digital channels in said one or more receiving time-division-multiplexed signals;
- and said transmultiplexer means of said first means converting said one or more receiving time-division-multiplexed signals to said one or more receiving frequency-division-multiplexed signals;
- and means adapted to couple said central switch means and said cable network.
3 more elements
A method for use with telephone subscriber locations, each telephone subscriber location including means for establishing an RF transmitting channel and an RF receiving channel associated with the subscriber location for conveying signalling and analog voice information from and to, respectively, the subscriber location, the RF transmitting channels of said subscriber locations forming one or more transmitting frequency-division-multiplexed signals and the RF receiving channels of said subscriber locations forming one or more receiving frequency-division-multiplexed signals, and with a broad band cable network for carrying the RF receiving and transmitting channels of said subscriber locations via said one or more transmitting frequency-division-multiplexed signals and said one or more receiving frequency-division-multiplexed signals, said method comprising:
- using a central switch means responsive to said cable network for enabling each RF transmitting channel in the one or more transmitting frequency-division-multiplexed signals on the cable network to be selectively coupled to any of the RF receiving channels in the one or more transmitting frequency-division-multiplexed signals on the cable network, said enabling step of said central switch means including:
- establishing for each RF transmitting channel a transmitting digital channel for carrying digital voice information corresponding to the analog voice information carried by the RF transmitting channel and establishing first digital control channels for carrying the signalling information of the RF transmitting channels, said transmitting digital channels and said first digital control channels forming one or more transmitting time-division-multiplexed signals each containing a number of transmitting digital channels and a first control channel carrying the signalling information for said number of transmitting digital channels, said steps of establishing including using a transmultiplexer means for converting said one or more transmitting frequency-division-multiplexed signals to said one or more transmitting time-division-multiplexed signals;
- using a digital switch means for establishing for each RF receiving channel a receiving digital channel for carrying digital voice information corresponding to the analog voice information carried by the RF receiving channel and for establishing one or more second digital control channels for carrying the signalling information of the RF receiving channels, said receiving digital channels and said second digital control channels forming one or more receiving time-division-multiplexed signals each of which containing a number of receiving digital channels and a second control channel carrying the signalling information for said number of receiving digital channels, and further using said digital switch means to selectively couple each transmitting digital channel in said one or more transmitting time-division-multiplexed signals to any of the receiving digital channels in said one or more receiving time-division-multiplexed signals;
- and using said transmultiplexer means to convert said one or more receiving time-division-multiplexed signals to said one or more receiving frequency-division-multiplexed signals;
- and coupling said central switch means and said cable network.
2 more elements
Dependencies are inferred from the claim text.