The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 2015
Filed:
Dec. 27, 2013
Sigma Designs Israel S.d.i. Ltd., Tel-Aviv, IL;
Ilan Reuven, Ganey Tikva, IL;
SIGMA DESIGNS ISRAEL S.D.I. LTD., Tel-Aviv, IL;
Abstract
A system for transmitting and receiving signals over residential electrical cables includes at least one active wire, neutral wire and ground wire, including at least two power line modems, each coupling an electrical device with an electrical socket, each one of the power line modems including a processor. The system has transmitters and at least one receiver, the transmitters and the receiver including a coupling circuit, the coupling circuit including a first transformer and a second transformer, the first transformer including a center tap. Receive and transmit wire pairs are respectively formed from two of the active, neutral and ground wires and the midpoint, the transmitters defining a carrier wave set over the transmit wire pair. The processor determines a frequency carrier wave for the signals and provides the signals to a respective one of the transmitters according to the carrier wave set the frequency carrier wave is in.