POWER LINE COMMUNICATIONS METHOD AND APPARATUS

• US 20120161543A1
• Filed: 12/29/2011
• Published: 06/28/2012
• Est. Priority Date: 06/29/2009
• Status: Active Grant

• Current Assignee: Sigma Designs Israel S.D.I Ltd. (Uphill Investment Co.)
• Original Assignee: Sigma Designs Israel S.D.I Ltd. (Uphill Investment Co.)
• Inventors: Reuven, Ilan, Verbin, Rami, Sterenson, Ron
• Granted Patent: US 8,952,567 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H04B 2203/5416 by adding signals to the wave form of the power source
• CPC Class Codes: H04B 2203/5445 Local network
• CPC Class Codes: H04B 2203/5466 using three phases conductors
• CPC Class Codes: H04B 2203/5495 having measurements and testing channel
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines

Abstract

System, for transmitting and receiving signals over residential electrical cables includes at least one active wire, one neutral wire and one ground wire. The system includes at least two power line modems, each one of the two power line modems including a processor, transmitters and at least one receiver, transmitters and the receiver being coupled with the processor, for respectively transmitting and receiving the signals. At least two of the wires form at least one receive wire pair and at least two of the wires form at least one transmit wire pair. Each one of the transmitters defines a respective carrier wave range over the transmit wire pair, the processor determining a frequency carrier wave for the signals when the signals are transmitted. A given one of the transmitters transmits the signals if the frequency carrier wave is in the carrier wave range of the given one of the transmitters.

Claims

1. System, for transmitting and receiving signals over residential electrical cables comprising at least one active wire, one neutral wire and one ground wire, said system comprising:

at least two power line modems, each one of said at least two power line modems coupling a respective electrical device with a respective electrical socket, each said respective electrical socket being coupled with said residential electrical cables,

each one of said at least two power line modems comprising;

a processor;

a plurality of transmitters, coupled with said processor, for transmitting said signals; and

at least one receiver, coupled with said processor, for receiving said signals;

wherein at least two of said wires forms at least one receive wire pair,

wherein at least two of said wires forms at least one transmit wire pair,

wherein each one of said plurality of transmitters defines a respective carrier wave range over said at least one transmit wire pair,

wherein said processor determines a frequency carrier wave for said signals when said signals are transmitted,

wherein a given one of said plurality of transmitters transmits said signals if said frequency carrier wave is in said respective carrier wave range of said given one of said plurality of transmitters.

2. The system according to claim 1, wherein each said respective carrier wave range is disjoint.

3. The system according to claim 1, wherein each said respective carrier wave range over said at least one transmit wire pair is determined on a node-to-node basis.

4. The system according to claim 1, wherein each said respective carrier wave range over said at least one transmit wire pair is determined on a network basis.