System for transmission line termination by signal cancellation
AssigneeMosaid Technologies Incorporated
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 use with an existing power cable in walls of a building and connected to a power outlet having a power connector, the power cable being connected in a bus topology for carrying a digital data signal, said device comprising:
- a connector for connecting to the power outlet for coupling to the digital data signal carried over the power cable;
- and
- a termination circuit selectively couplable to said connector and constructed for terminating the digital data signal propagated over the power cable when said device is connected to said power connector,
- wherein said device is switchable between 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 switchable between first and second states for use with a power cable in walls of a building in a bus topology and connected for carrying digital data signal, said system comprising:
- a power outlet comprising a power connector;
- first and second power cable segments forming portions of the power cable and connected to each other at said power connector of said power outlet to form a continuous transmission line;
- and
- a termination device selectively couplable to said power connector and, when coupled to said power connector, operative to at least attenuate the digital data signal propagated between said first and second power cable segments,
- wherein in the first state said termination device is coupled to the power connector, and in the second state said termination device is decoupled from the power connector.
Dependencies are inferred from the claim text.