2351 results about "Power-line communication" patented technology

Described herein are power receptacle wireless access point (AP) devices that may be used as part of a networked (smart) living and work space. These power receptacle wireless AP devices may be wall-mounted and / or retrofitted over existing electrical outlets or light switches, for providing wireless access to a room or region of a room. The power receptacle wireless AP device may connect via power line communication to a data connection.

The present invention provides a system for operating a power line communications system that employs surface wave communications and conducted communications. The system is comprised of a plurality of network elements, which may take the form of repeaters, communication interface devices, backhaul devices, medium voltage transducers, distribution points, aggregation points, and others. In one embodiment, surface waves are communicated over the medium voltage power lines and the conducted communications are communicated via the low voltage power lines to and from customer premises.

A device and method for providing power line communications via an underground residential distribution power system is provided. One embodiment of the present invention includes a medium voltage interface device that may include a first port configured to communicate over the power line and a network interface. A first amplifier may form part of a first communication path between the first port and the network interface and be configured to amplify data signals transmitted via the first port. In addition, a second amplifier may form part of a second communication path between the first port and the network interface and be configured to amplify data signals received via the first port. In addition, the embodiment may include a diplexer forming part of the first communication path between the first amplifier and the first port and forming part of the second communication path between the second amplifier and the first port. The device may include an electro-optic converter coupled to the network interface to convert between electrical and optic data signals, wherein the network interface is configured to communicate via one or more fiber optic conductors.

The present invention provides a power line communications system that may employ power lines and non-power communications mediums. In one embodiment, the system is comprised of a plurality of interface devices with each being in communication with one or more user devices via one or more low voltage power lines. Each interface device also may be in communication with an upstream communications device via a non-power line communications medium. The upstream communications device may communicate with a backhaul point via a backhaul link to provide access to a network such as the Internet. In one embodiment, each interface device provides an interface between one or more low voltage power lines and the non-power line communications medium, which may be a coaxial cable. The upstream communications device may provide routing for data communicated with the interface devices.

A PFC circuit modulating a power line using pulse width modulation (PWM) to drive a power MOSFET and series inductor across the power line. Since many modern electronic systems include a power factor correction circuit (PFC) that already includes a series inductor and power MOSFET, a PLC is incorporated into a controller to inject a PLC transmit signal into a control loop for the PFC circuit. This can be done using either an analog PFC controller, such as the UCC28517, the UCC2819A, or a digital PFC controller such as based on a TMS320C24xx DSP.

Disclosed is a power line broadband communication system having broadband coupler devices capable of direct electrical connection to an energized power line. The coupler includes a conductive portion movable by an adjustable member from a non-conducting retracted position spaced apart from the power transmission line to a forward conducting position in electrical contact with the power line. An insulated arm supports the coupler on the power line. A base on the coupler is engageable with a remotely activated tool in order to accomplish the electrical connection in a safe and secure manner. Broadband data signals are sent to and from customer premises along the shared energized power lines. New coupler connections to the energized power lines allow the additional broadband customers and / or repeaters to join the communication system. Also couplers may provide connections to control electronics, routers, wireless transceivers, and may allow the broadband signals to bypass transformers on the power lines. The invention helps to minimize risk by allowing an installer to be remotely spaced from the energized power line while making the electrical coupling contact with the energized power line.