Distributed splitter for data transmission over twisted wire pairs
First Claim
1. A system comprising:
- a plurality of transceivers, each transceiver coupled between a different one of a plurality of destinations and a first jack connected to a corresponding conductive path of a telephone wiring network passing signals in a telephone voice band between a plurality of telephone devices and a telephone exchange, each one of said plurality of transceivers including circuitry for accepting signals from the corresponding conductive path in a first band of frequencies that lies above the highest frequency of a voice band of a telephone, and for rejecting signals in the telephone voice band, a signal interface coupled between an external source of information and each of the conductive paths, said signal interface receiving an external signal encoding an information stream from an external source of information, encoding the information stream in an internal signal using signals in the first band of frequencies, using information in the information stream to select any one of said plurality of transceivers, transmitting the internal signal to the selected transceiver over a corresponding separate conductive path, limiting transmission of signals from the telephone wiring network to a telephone exchange at frequencies above the telephone voice band, and passing signals between the telephone wiring network and the telephone exchange at frequencies within in the telephone frequency band, and at least one of;
(i) a plurality of filters, each corresponding to one of the plurality of telephone devices and one of the conductive paths, each one of said plurality of filters connecting between the corresponding conductive path and a second jack, the second jack being different from and located separately from the first jack, the second jack being coupled between one of said plurality of filters and the corresponding telephone device, and (ii) a second plurality of filters, each corresponding to one of the plurality of telephone devices and one of the conductive paths, each one of said second plurality of filters connecting between the corresponding telephone device and a third jack, the third jack being different from and located separately from the first jack, the third jack being coupled between one of said second plurality of filters and the corresponding telephone device.
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Accused Products
Abstract
A system that provides video signal communication between a source of the video signal and a plurality of units that include destinations of the video signal includes an interface coupled to the source and to telephone lines, each of which serves at least one of the units and carries voice signals to and from one or more telephones coupled to the telephone line at said unit. The interface receives the video signal from the source, and transmits the received video signal onto at least one of the telephone lines in a selected frequency range that is different from frequencies at which the voice signals are carried on that telephone line. This causes the video signal to be coupled to a receiver which is connected to the telephone line at the unit served by that line and is adapted to recover the video signal from the telephone line and apply it to one or more of the destinations at the unit. The source is a cable (e.g., electrical or fibre optic) that is linked to the interface and that carries a plurality of video signals. The destinations are, e.g., televisions. The units can be residences (such as individual houses or apartments in an apartment building) or offices in an office building.
103 Citations
1 Claim
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1. A system comprising:
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a plurality of transceivers, each transceiver coupled between a different one of a plurality of destinations and a first jack connected to a corresponding conductive path of a telephone wiring network passing signals in a telephone voice band between a plurality of telephone devices and a telephone exchange, each one of said plurality of transceivers including circuitry for accepting signals from the corresponding conductive path in a first band of frequencies that lies above the highest frequency of a voice band of a telephone, and for rejecting signals in the telephone voice band, a signal interface coupled between an external source of information and each of the conductive paths, said signal interface receiving an external signal encoding an information stream from an external source of information, encoding the information stream in an internal signal using signals in the first band of frequencies, using information in the information stream to select any one of said plurality of transceivers, transmitting the internal signal to the selected transceiver over a corresponding separate conductive path, limiting transmission of signals from the telephone wiring network to a telephone exchange at frequencies above the telephone voice band, and passing signals between the telephone wiring network and the telephone exchange at frequencies within in the telephone frequency band, and at least one of;
(i) a plurality of filters, each corresponding to one of the plurality of telephone devices and one of the conductive paths, each one of said plurality of filters connecting between the corresponding conductive path and a second jack, the second jack being different from and located separately from the first jack, the second jack being coupled between one of said plurality of filters and the corresponding telephone device, and (ii) a second plurality of filters, each corresponding to one of the plurality of telephone devices and one of the conductive paths, each one of said second plurality of filters connecting between the corresponding telephone device and a third jack, the third jack being different from and located separately from the first jack, the third jack being coupled between one of said second plurality of filters and the corresponding telephone device.
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Specification