COMMUNICATION SYSTEM AND COMMUNICATION APPARATUS
First Claim
Patent Images
1. A communication system comprising:
- at least one power line communication device configured to be connected with another power line communication device via a common power line for providing a commercial alternate-current power supply; and
a communication terminal configured to includea modem for power line communication, anda coil for exchanging power line communication signals with an external entity through electromagnetic coupling,said communication terminal sending and receiving the signals to and from said external entity through electromagnetic coupling between said coil and the power line.
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Abstract
A communication system is disclosed which includes: at least one power line communication device configured to be connected with another power line communication device via a common power line for providing a commercial alternate-current power supply; and a communication terminal configured to include a modem for power line communication and a coil for exchanging power line communication signals with an external entity through electromagnetic coupling, the communication terminal sending and receiving the signals to and from the external entity through electromagnetic coupling between the coil and the power line.
25 Citations
11 Claims
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1. A communication system comprising:
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at least one power line communication device configured to be connected with another power line communication device via a common power line for providing a commercial alternate-current power supply; and a communication terminal configured to include a modem for power line communication, and a coil for exchanging power line communication signals with an external entity through electromagnetic coupling, said communication terminal sending and receiving the signals to and from said external entity through electromagnetic coupling between said coil and the power line. - View Dependent Claims (5)
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2. A communication system comprising:
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at least one power line communication device configured to be connected with another power line communication device via a common power line for providing a commercial alternate-current power supply; a communication terminal configured to include a modem for power line communication, and a first coil for exchanging power line communication signals with an external entity through electromagnetic coupling; and a coupling device configured to be connected with the power line and include a filter for attenuating alternate-current components on said power line, and a second coil installed upstream of said filter; wherein said communication terminal conducts proximity communication with another communication terminal using the magnetic coupling effect occurring between said first and said second coils in the proximity of said coupling device. - View Dependent Claims (6, 8, 9, 10, 11)
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3. A communication system comprising:
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a plurality of communication terminals each configured to include a modem for power line communication, and a first coil for exchanging power line communication signals with an external entity through electromagnetic coupling; and a coupling device configured to be connected with a power line and include a plurality of second coils laid out in a two-dimensional array connected to said power line via a filter for attenuating alternate-current components on said power line; wherein said plurality of communication terminals conduct proximity communication with one another using the magnetic coupling effect occurring between each of said first coils and each of said second coils in the proximity of said coupling device. - View Dependent Claims (7)
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4. A communication system comprising:
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a first and a second communication apparatus each configured to include a modem for power line communication, and a coil for exchanging power line communication signals with an external entity through electromagnetic coupling; wherein said first and said second communication apparatuses conduct proximity communication with each other using the electromagnetic coupling effect occurring when the coil of said first communication apparatus is placed in proximity to the coil of said second communication apparatus in such a manner that the coils are opposed to each other.
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Specification