In one embodiment, an electric vehicle system includes a power system for charging a battery installed in an electric vehicle and comprising a bi-directional power and data connector for receiving power and data from or transmitting the power and data to an electric vehicle charging device, a communications system comprising a server and configured for receiving power from the power system and receiving data from or transmitting the data to the power system for download or upload at the electric vehicle charging device, and an authentication module for authenticating the electric vehicle charging device. A method is also disclosed herein.

A broadband access system, comprising a broadband access hub device (hub device) and broadband access premise devices (premise devices) wirelessly coupled the hub device to provide broadband services to multiple user equipment (UEs), is described. The hub device may access broadband services on a fiber optic broadband network and wirelessly provide access to the broadband services to the premise devices. The premise device may wirelessly communicate with the hub device and communicate with user equipment (UEs) for providing access to the broadband services through the hub device. The premise device may be attached to an electric utility meter, and a power interface module of the premise device may supply electrical power to the premise device from the electric utility meter.

A broadband access system, comprising a broadband access hub device (hub device) and broadband access premise devices (premise devices) wirelessly coupled the hub device to provide broadband services to multiple user equipment (UEs), is described. The hub device may access broadband services on a fiber optic broadband network and wirelessly provide access to the broadband services to the premise devices. The premise device may wirelessly communicate with the hub device and communicate with user equipment (UEs) for providing access to the broadband services through the hub device. The premise device may be attached to an electric utility meter, and a power interface module of the premise device may supply electrical power to the premise device from the electric utility meter.

A system and method for supplying uninterruptible power includes a housing, a power supply input, a power source equipment input, a first powered device output, a second powered device output, an alternative power supply, and a control module. The control module includes a comparator, a switch, a converter and an injector. The injector includes a regulator and power autonegotiation module. The alternative power supply includes a plurality of battery packs in series. There can also be first and second powered devices with uninterrupted power, even when only one of the powered devices breaks. A power is uninterrupted to the first powered device, even if power is stopped to the second powered device, due to a repair or fault of the second powered device.

An Ethernet transceiver is disclosed. The Ethernet transceiver includes transceiver circuitry having receiver circuitry to receive refresh signals during corresponding refresh cycles from a link partner during a low-power idle mode of operation. Each refresh signal has a refresh period, and where a quiet period is interposed between successive refresh cycles. Signal quality detection circuitry, during the low-power idle mode, determines a measure of signal quality associated with the received refresh signals. Subsequent refresh cycles exhibit at least one of an adjusted refresh period or an adjusted quiet period based on the measure of signal quality.

An Ethernet transceiver is disclosed. The Ethernet transceiver includes transceiver circuitry having receiver circuitry to receive refresh signals during corresponding refresh cycles from a link partner during a low-power idle mode of operation. Each refresh signal has a refresh period, and where a quiet period is interposed between successive refresh cycles. Signal quality detection circuitry, during the low-power idle mode, determines a measure of signal quality associated with the received refresh signals. Subsequent refresh cycles exhibit at least one of an adjusted refresh period or an adjusted quiet period based on the measure of signal quality.

An apparatus for filtering an electrical power signal in an Ethernet communication system includes a link interface, a power interface, and a filter connected between the link interface and the power interface. The link interface is configured to connect to an Ethernet link. The power interface is configured to connect to one or both of (i) a power-supply that supplies the electrical power signal for transfer over the Ethernet link, and (ii) a circuit that consumes the electrical power signal transferred over the Ethernet link. The filter includes at least (i) a primary inductor configured to filter the electrical power signal transferred to or from the Ethernet link, and (ii) one or more complementary inductors connected in series with the primary inductor, the one or more complementary inductors configured to reduce a parasitic capacitance of the filter.

An apparatus for filtering an electrical power signal in an Ethernet communication system includes a link interface, a power interface, and a filter connected between the link interface and the power interface. The link interface is configured to connect to an Ethernet link. The power interface is configured to connect to one or both of (i) a power-supply that supplies the electrical power signal for transfer over the Ethernet link, and (ii) a circuit that consumes the electrical power signal transferred over the Ethernet link. The filter includes at least (i) a primary inductor configured to filter the electrical power signal transferred to or from the Ethernet link, and (ii) one or more complementary inductors connected in series with the primary inductor, the one or more complementary inductors configured to reduce a parasitic capacitance of the filter.

A communication device includes an interface connector for connecting to a computing circuit to receive a media data and an external power supply, a transmission circuit, wherein the circuit transmits the media data to a network, a battery power supply, a controller circuit powered by the battery power supply, a sensor, communicatively coupled to the controller circuit, for detecting a movement of the communication device, a switch circuit for switchably connecting the battery power supply to the transmission circuit responsive to a first switch control signal, and a test circuit, communicatively coupled to the controller circuit, for generating the first switch control signal based on an external power control signal indicating whether the interface connector is connected to the computing circuit and a motion detection signal indicating whether the sensor detects the movement of the communication device.

System and method for improving the shaving experience by providing improved visibility of the skin shaving area. A digital camera is integrated with the electric shaver for close image capturing of shaving area, and displaying it on a display unit. The display unit can be integral part of the electric shaver casing, or housed in a separated device which receives the image via a communication channel. The communication channel can be wireless (using radio, audio or light) or wired, such as dedicated cabling or using powerline communication. A light source is used to better illuminate the shaving area. Video compression and digital image processing techniques are used for providing for improved shaving results. The wired communication medium can simultaneously be used also for carrying power from the electric shaver assembly to the display unit, or from the display unit to the electric shaver.