Multiple services system using telephone local loop
First Claim
1. A multiple services system using telephone transmission lines comprisinga microprocessor-controlled subscriber data system to be located on subscriber premises including a subscriber data bus, at least one data service terminal connected to said bus, at least one alarm condition monitor and microprocessor control means connected to said bus and said alarm condition monitor for controlling the transmission of signals derived therefrom;
- a central control system for processing signals applied thereto, including alarm signals;
a data service system for providing data communications to be transmitted to said subscriber data system on request; and
switching communication controller means connected to said subscriber data system via telephone transmission lines for connecting said subscriber data system to said central control system in the case of transmission of alarm signals and for selectively switching connection of said subscriber data system to said data service system for effecting bidirectional transmission of data communications between said data service system and said subscriber data system in response to an initiating request from said subscriber data system.
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Accused Products
Abstract
A multiple services system using telephone lines to supply various data services to subscribers, including alarm surveillance, meter reading, energy management and digital data service, provides a multi-conductor subscriber bus at the subscriber premises for selective connection of plural data service terminals to the system and a switching communication controller at the central office which acts as a concentrator for the transmission of alarm, meter reading and control signals between the subscriber data system and a central control system, while acting as a switch for the connection of the subscriber data system to a data service system for transmission to the subscriber of digital video display data on request. The transmission over the telephone lines is transparent to normal telephone service and all communications within the system, including those on the subscriber bus, are effected in accordance with a predetermined link control protocol.
275 Citations
43 Claims
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1. A multiple services system using telephone transmission lines comprising
a microprocessor-controlled subscriber data system to be located on subscriber premises including a subscriber data bus, at least one data service terminal connected to said bus, at least one alarm condition monitor and microprocessor control means connected to said bus and said alarm condition monitor for controlling the transmission of signals derived therefrom; -
a central control system for processing signals applied thereto, including alarm signals; a data service system for providing data communications to be transmitted to said subscriber data system on request; and switching communication controller means connected to said subscriber data system via telephone transmission lines for connecting said subscriber data system to said central control system in the case of transmission of alarm signals and for selectively switching connection of said subscriber data system to said data service system for effecting bidirectional transmission of data communications between said data service system and said subscriber data system in response to an initiating request from said subscriber data system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A multiple services system using telephone transmission lines comprising
a microprocessor-controlled subscriber data system to be located on subscriber premises including a subscriber data bus having at least a first pair of lines for carrying control signals, a second pair of lines for input data signals and a third pair of lines for output data signals; - at least one data service terminal connected to said bus;
at least one alarm condition monitor; and
microprocessor control means connected to said bus and said alarm condition monitor for controlling the transmission of signals derived therefrom, said microprocessor control means including a subscriber control processor connected to the said first pair of lines of said subscriber data bus and a line switch controlled by said processor for connecting the said second and third pairs of lines to said bus to said telephone transmission lines;a central control system for processing signals applied thereto, including alarm signals; a data service system for providing data communications on request; and switching communication controller means to be connected to said subscriber data system via telephone transmission lines for connecting said subscriber data system to said central control system in the case of transmission of alarm signals and for selectively switching connection of said subscriber data system to said data service system in the case of transmission of data communications. - View Dependent Claims (11)
- at least one data service terminal connected to said bus;
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12. A multiple services system using telephone transmission lines comprising
a plurality of microprocessor-controlled subscriber data systems to be located on subscriber premises each including a subscriber data bus, at least one data service terminal connected to said bus, at least one alarm condition monitor and microprocessor control means connected to said bus and said alarm condition monitor for controlling the transmission of signals derived therefrom; -
a central control system for processing signals applied thereto, including alarm signals; a data service systems for providing data communications on request; and switching communication controller means to be connected to said plurality of subscriber data systems via telephone transmission lines for connecting said subscriber data systems to said central control system in the case of transmission of alarm signals and for selectively switching connection of said subscriber data systems to said data service system in the case of transmission of data communications, including microprocessor-controlled switching means which acts as a concentrator for alarm signals, normally providing for connection of said plurality of subscriber data systems to said central control system, and which acts as a switch for data communication, providing for switching of a selected subscriber data system to said data service system. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A multiple services system using telephone transmission lines comprising
a plurality of microprocessor-controlled subscriber data systems to be located at respective subscriber premises, each including at least one data service terminal; -
a central control system, including a central control computer and a plurality of peripheral units connected thereto, for indicating and storing alarm signals derived from said subscriber data systems; a data service systems for providing data communications to be transmitted to selected subscriber data systems on request; and switching communication controller means to be connected to said subscriber data systems via telephone transmission lines for normally effecting communication between said subscriber data systems and said central control system in the case of alarm signals and for selectively switching connection of a selected subscriber data system to said data service system for effecting bi-directional transmission of data between said data service system and said selected subscriber data system, including microprocessor-controlled switching means which acts as a concentrator for communication of alarm signals and as a switch for transmission of data.
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22. A multiple services system using telephone transmission lines comprising
a plurality of microprocessor-controlled subscriber data systems to be located at respective subscriber premises, each including at least one data service terminal; -
a central control system, including a central control computer and a plurality of peripheral units connected thereto, for indicating and storing alarm signals derived from said subscriber data systems; a data service system for providing data communications on request; and switching communication controller means to be connected to said subscriber data system via telephone transmission lines for normally effecting communication between said subscriber data systems and said central control system in the case of alarm signals and for selectively switching connection of a selected subscriber data system to said data service system in the case of transmission of data service data, including microprocessor-controlled switching means which acts as a concentrator for communication of alarm signals and as a switch for transmission of data service data and including a plurality of service interface units each comprising an interface microprocessor, a plurality of line switches each normally connecting a respective input to said interface microprocessor, a plurality of bus switches, and a plural conductor service bus connectable to said line switches via said bus switches under control of said interface microprocessor in the respective service interface unit. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. In a system for transmitting control and data signals between a plurality of subscriber data systems, a central control system and a data service system, the improvement comprising
switching communication controller means to be connected to said subscriber data system via telephone lines for normally connecting said subscriber data systems to said central control system and for selectively switching connection of a selected subscriber data system to said data service system, including a plurality of service interface units connected in parallel to a plural conductor service bus, each service interface unit having an interface microprocessor, a plurality of line switches each normally connecting a respective input to said interface microprocessor and a plurality of bus switches each connected in tandem to a respective line switch and to a respective conductor of said plural conductor service bus; -
the inputs of a first group of said service interface units being connected via telephone lines to said subscriber data systems and the inputs of a second group of said service interface units being connected to said data service system; and service controller microprocessor means connected to said interface microprocessors in each service interface unit via said service bus and to said central control system. - View Dependent Claims (33, 34)
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35. A multiple services system using telephone transmission lines comprising
a plurality of microprocessor-controlled subscriber data systems to be located at respective subscriber premises, each including a multi-conductor subscriber data bus, at least one data service terminal connected to said bus, alarm condition signal means for generating alarm signals, and microprocessor control means connected to said bus and said alarm condition signal means for controlling the transmission of alarm and data signals from said subscriber data system; -
a central control system, including a central control computer and a plurality of peripheral units connected thereto, for indicating and storing alarm signals derived from said subscriber data systems; a data service system for providing data communications on request; and switching communication controller means to be connected to said subscriber data system via telephone transmission lines for normally effecting communication between said subscriber data systems and said central control system in the case of alarm signals and for selectively switching connection of a selected subscriber data system to said data service system in the case of transmission of data service data, including microprocessor-controlled switching means which acts as a concentrator for communication of alarm signals and as a switch for transmission of data service data. - View Dependent Claims (36, 37, 38, 39)
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40. A microprocessor-controlled switching communication controller for effecting selective communication between first, second and third systems, comprising
a first service interface unit having a first input for connection to said first system and including a first interface microprocessor, at least one first line switch normally connecting said first input to said first interface microprocessor, and a first bus switch connected to said first line switch; -
a second interface unit having a second input for connection to said second system and including a second interface microprocessor, at least one second line switch normally connecting said second input to said second interface microprocessor, and a second bus switch connected to said second line switch; a plural conductor service bus connectable to said first and second line switches via said first and second bus switches under control of said first and second interface microprocessor, respectively; and service controller microprocessor means connected via said service bus to said first and second interface microprocessors and to said third system for effecting communication between said first and third systems via said first line switch and said first interface microprocessor and for effecting communication between said first and second systems by interconnecting said first and second inputs via said first and second line switches, said first and second bus switches and said service bus. - View Dependent Claims (41, 42, 43)
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Specification