POWERLINE COMMUNICATOR (PLC) MODEM EMPLOYING AN ANALOG MAGNETIC TRANSDUCER
First Claim
1. A method for receiving data from, and transmitting data to, a PLC network, comprising the steps of:
- receiving data from the PLC network, including;
detecting a first electromagnetic field generated by the PLC network, said electromagnetic field generated by current, modulated by a data signal, conducted on a power line;
transforming changes in the first electromagnetic field that correspond to data into an electrical output signal;
transforming the electrical output signal into a digital signal; and
communicating the digital signal to a data receiving device; and
transmitting data to the PLC network, including.receiving from a data transmitting device a digital signal in which information is embodied;
generating a second electromagnetic field that is modulated to incorporate the information embodied in the digital signal; and
transmitting the second electromagnetic field to the PLC network.
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Accused Products
Abstract
A PLC cable modem is provided which includes an analog electromagnetic field transducer for generating an electromagnetic field based on an analog electrical signal and also for generating an analog electrical signal based on an electromagnetic field. The PLC cable modem also includes an analog signal processing unit operatively coupled to the analog electromagnetic field transducer and a digital signal processing unit for processing signals received from (or to be sent to) the analog signal processing unit. An interface port is provided for communicating digital signals to and from a data transmission or receiving device.
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Citations
20 Claims
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1. A method for receiving data from, and transmitting data to, a PLC network, comprising the steps of:
receiving data from the PLC network, including; detecting a first electromagnetic field generated by the PLC network, said electromagnetic field generated by current, modulated by a data signal, conducted on a power line; transforming changes in the first electromagnetic field that correspond to data into an electrical output signal; transforming the electrical output signal into a digital signal; and communicating the digital signal to a data receiving device; and
transmitting data to the PLC network, including.receiving from a data transmitting device a digital signal in which information is embodied; generating a second electromagnetic field that is modulated to incorporate the information embodied in the digital signal; and transmitting the second electromagnetic field to the PLC network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for receiving data from, and transmitting data to, a PLC network, using a PLC cable modem, the method comprising the steps of:
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generating a first electromagnetic field using an analog electromagnetic field transducer, based on an analog electrical signal provided by the PLC cable modem; and generating an analog electrical signal based on a second electromagnetic field detected by said analog electromagnetic field transducer, said second electromagnetic field generated by current, modulated by a data signal, conducted on a power line. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification