System for transmission line termination by signal cancellation
AssigneeSerconet Ltd.
InventorYehuda Binder
Life of this patent
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Abstract
A communication system having first and second states for use with a shared transmission line composed of at least two conductors and composed of first and second transmission line segments connected to each other at a single connection point. In the first state, a termination is coupled to the single connection point and is operative to at least attenuate a signal propagated between the first and second segments. In the second state, a driver is coupled to the connection point and is operative to conduct a signal over the first and second segments.
Claims11
A device for connection to an existing telephone wire pair in walls of a building via a telephone connector of a telephone outlet the telephone wire pair being connected to the telephone wire pair and the telephone wire pair being connected in a bus topology for carrying a digital data signal, said device comprising:
- a connector for connecting to the outlet telephone connecting for coupling to the digital data signal carried over the telephone wire pair;
- and
- a termination circuit selectively couplable to said connector and constructed for terminating the digital data signal propagated over the telephone wire pair when said device is connected to said telephone connector, wherein said device has a first state in which said termination circuit is coupled to said connector and a second state in which said termination circuit is not coupled to said connector.
A communication system having first and second operating states for use with an existing telephone wire pair in walls of a building, the telephone wire pair being connected in a bus topology for carrying a digital data signal, said system comprising:
- a telephone outlet comprising a telephone connector;
- first and second segments of the telephone wire pair, said first and second segments being connected to each other at said telephone connector to form a continuous transmission line on which the digital data a\signal can be propagated between the first and second segments;
- and
- a termination device selectively couplable to said telephone connector and, when coupled to said telephone connector, operative to at least attenuate the digital data signal propagated between said first and second telephone wire pair segments,
- wherein in the first operating state said termination device is coupled to said telephone connector, and in the second operating state said termination device is decoupled from said telephone connector.
Dependencies are inferred from the claim text.