Low speed gate circuit
First Claim
1. In a telephone system which includes one or more ports located on a subscriber'"'"'s premises for connecting equipment on said premises to a specified vendor or services located at a location remote from said premises, said telephone system including means for generating a time multiplexed input serial data stream comprising a plurality of digital words in a serial format, each said digital word representing a data word input on a specific port, said port being specificed by the position of said digital word in said input serial data stream relative to a synchronization signal present in said telephone system and said telephone system further including means for receiving a time multiplexed output serial data stream comprising a plurality of digital words in serial format, each said data word representing a data word to be sent to a specified port, said port being determined by position of said digital word in said output serial data stream relative to said synchronization signal, a gate circuit comprising:
- means for coupling said gate circuit to said generating means;
means for coupling said gate circuit to said receiver means;
vendor coupling means for coupling said gate circuit to each of said vendors, said vendor coupling means coupling each said vendor to said gate circuit by a telephone circuit, means for sending output data packets to each said vendor including means for generating signals representing said output data packets on the said telephone circuit coupling said vendor to said gate circuit, each said output data packet including one or more data words from a specified port and information specifying said port, and means for receiving input data packets from each said vendor including means for receiving signals representing said input data packets on the said telephone circuit coupling said vendor to said gate circuit, each said input data packet including one or more data words to be sent to a specified port and information specifying said port;
serial input interface means connected to said input serial data stream coupling means for determining the vendor to which each digital word in said input serial data stream is to be sent and for coupling the data word specified by each said digital word and information specifying the port in which said digital word originated to said vendor coupling means; and
serial output interface means connected to said output serial data stream coupling means and said vendor coupling means for placing a data word received from a vendor which is to be sent to a specified port into said output serial data stream at a location relative to said synchronization pulse which will cause said data word to be sent to the port specified in the input data packet in which it was received from said vendor.
1 Assignment
0 Petitions
Accused Products
Abstract
A gate circuit is described for use in a telephone system which includes one or more ports located on a subscriber'"'"'s premises for connecting equipment on these premises to a specified vendor of services having equipment at a remote location. The gate circuit simulates a hard wired connection between the ports on the subscriber'"'"'s equipment and the vendor'"'"'s equipment.
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Citations
16 Claims
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1. In a telephone system which includes one or more ports located on a subscriber'"'"'s premises for connecting equipment on said premises to a specified vendor or services located at a location remote from said premises, said telephone system including means for generating a time multiplexed input serial data stream comprising a plurality of digital words in a serial format, each said digital word representing a data word input on a specific port, said port being specificed by the position of said digital word in said input serial data stream relative to a synchronization signal present in said telephone system and said telephone system further including means for receiving a time multiplexed output serial data stream comprising a plurality of digital words in serial format, each said data word representing a data word to be sent to a specified port, said port being determined by position of said digital word in said output serial data stream relative to said synchronization signal, a gate circuit comprising:
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means for coupling said gate circuit to said generating means; means for coupling said gate circuit to said receiver means; vendor coupling means for coupling said gate circuit to each of said vendors, said vendor coupling means coupling each said vendor to said gate circuit by a telephone circuit, means for sending output data packets to each said vendor including means for generating signals representing said output data packets on the said telephone circuit coupling said vendor to said gate circuit, each said output data packet including one or more data words from a specified port and information specifying said port, and means for receiving input data packets from each said vendor including means for receiving signals representing said input data packets on the said telephone circuit coupling said vendor to said gate circuit, each said input data packet including one or more data words to be sent to a specified port and information specifying said port; serial input interface means connected to said input serial data stream coupling means for determining the vendor to which each digital word in said input serial data stream is to be sent and for coupling the data word specified by each said digital word and information specifying the port in which said digital word originated to said vendor coupling means; and serial output interface means connected to said output serial data stream coupling means and said vendor coupling means for placing a data word received from a vendor which is to be sent to a specified port into said output serial data stream at a location relative to said synchronization pulse which will cause said data word to be sent to the port specified in the input data packet in which it was received from said vendor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. In a digital telephone system in which digital data words are exchanged between said telephone system and a vendor over a telephone circuit, each said data word being identified by an address which specifies the destination in said telephone system of said data word if said data word was received from said vendor or the source of said data word in said telephone system if said data word is being sent to said vendor, a vendor interface circuit comprising:
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means for coupling said vendor interface circuit to an address bus for receiving an address; means for coupling said vendor interface circuit to a data bus for sending and receiving data words; output data means coupled to said address coupling means and said data bus coupling means for storing a data word and an address associated with said data word when said data word and said address are coupled to said vendor interface circuit by said data bus coupling means and said address coupling means, respectively; telephone circuit coupling means for coupling said vendor interface circuit to a telephone circuit connecting said vendor interface circuit with said vendor; input data means coupled to said address coupling means and said data bus coupling means for storing a data word and an address associated with said data word when said data word and said address are received from said vendor on said telephone circuit coupling means and for storing a default data word for each possible address; read enable means for causing said vendor interface circuit to place a data word stored in said input data means on said data bus to be sent by said telephone system to the address present on said address bus; and vendor interface means coupled to said telephone circuit coupling means, said output data means and said input data means for sending each data word stored in said output data means to said vendor over said telephone circuit coupling means and for receiving one or more data words together with an address to be associated with each of said data words from said vendor and for causing said data words and addresses to be stored by said input data means. - View Dependent Claims (8, 9, 10)
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11. In a digital data transmission system for coupling each of a plurality of locations to a specified vendor location, said system including a time multiplexed input serial data stream comprising a plurality of digital words in a serial format, each said digital word representing a data word originating at a location in said system specified by the position of said digital word in said input serial data stream relative to a synchronization signal present in said system and a time multiplexed output serial data stream comprising a plurality of digital words in serial format, each said data word representing a data word to be sent to a specified location, said location being determined by position of said digital word in said output serial data stream relative to said synchronization signal, a gate circuit comprising:
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means for coupling said gate circuit to said input serial data stream; means for coupling said gate circuit to said output serial data stream; vendor coupling means for coupling said gate circuit to each of said vendors, said vendor coupling means including means for sending output data packets to each said vendor, each said output data packet including one or more data words from a specified location and information specifying said location, and means for receiving input data packets from each said vendor, each said input data packet including one or more data words to be sent to a specified location and information specifying said location; serial input interface means connected to said input serial data stream coupling means for determining the vendor to which each digital word in said input serial data stream is to be sent and for coupling the data word specified by each said digital word and information specifying the location in which said digital word originated to said vendor coupling means; and serial output interface means connected to said output serial data stream coupling means and said vendor coupling means for placing a data word received from a vendor which is to be sent to a specified location into said output serial data stream at a position relative to said synchronization pulse which will cause said data word to be sent to the location specified in the input data packet in which it was received from said vendor. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification