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86results about How to "Effective pointing" patented technology

High efficiency power supply for LED lighting applications

InactiveUS20070120506A1Accurate current regulationHigh efficiency operating pointElectrical apparatusElectroluminescent light sourcesVoltage regulationEffect light
A power supply for plural loads coupled in parallel comprises a voltage regulator, a plurality of current regulators, and an error control circuit. The voltage regulator provides a common output voltage to the plural loads. The voltage regulator comprises a sensor circuit providing a voltage sense signal corresponding to the output voltage, which provides feedback to regulate the output voltage at a selected level. The plurality of current regulators are coupled to respective ones of the plural loads. Each of the plurality of current regulators regulates current drawn by respective ones of the plural loads to within a desired regulation range. The plurality of current regulators each further provide a respective error signal corresponding to an ability to remain within the desired regulation range. The error control circuit is operatively coupled to the voltage regulator and to the plurality of current regulators. The error control circuit receives the error signals from the plurality of current regulators and provides a common error signal to the voltage regulator. The voltage regulator thereby changes the selected level of the output voltage in response to the common error signal. Accordingly, the selected level of the output voltage remains at a minimum voltage necessary to keep the plural loads in the desired regulation range.
Owner:SEMTECH CORP

High efficiency power supply for LED lighting applications

A power supply for plural loads coupled in parallel comprises a voltage regulator, a plurality of current regulators, and an error control circuit. The voltage regulator provides a common output voltage to the plural loads. The voltage regulator comprises a sensor circuit providing a voltage sense signal corresponding to the output voltage, which provides feedback to regulate the output voltage at a selected level. The plurality of current regulators are coupled to respective ones of the plural loads. Each of the plurality of current regulators regulates current drawn by respective ones of the plural loads to within a desired regulation range. The plurality of current regulators each further provide a respective error signal corresponding to an ability to remain within the desired regulation range. The error control circuit is operatively coupled to the voltage regulator and to the plurality of current regulators. The error control circuit receives the error signals from the plurality of current regulators and provides a common error signal to the voltage regulator. The voltage regulator thereby changes the selected level of the output voltage in response to the common error signal. Accordingly, the selected level of the output voltage remains at a minimum voltage necessary to keep the plural loads in the desired regulation range.
Owner:SEMTECH CORP

Vehicle information collection system having point issuing device

A vehicle information collection system is disclosed for receiving vehicle information by way of a communication network and storing the vehicle information. The vehicle information collection system comprises: a vehicle information collection device for collecting the vehicle information of a plurality of vehicles from each vehicle by way of the communication network; and a point-issuing device that is connected to the vehicle information collection device by way of the communication network for conferring points to the vehicles according to the vehicle information. The vehicle information management unit collects and stores vehicle information at any time, and when a prescribed condition has been met, transmits vehicle information that has been stored and information indicating its own vehicle to the vehicle information collection device by way of the on-board communication unit and the network. The vehicle information collection device, upon receiving vehicle information from a vehicle, both classifies and stores the received information and transmits the information that indicates the vehicle and the vehicle information that has been received from the vehicle to a point-issuing device by way of the network. The point-issuing device, upon receiving these items of information, issues points in a number that corresponds to the amount and / or the category and / or the value of vehicle information and transmits to the vehicle information that indicates the number of issued points.
Owner:NEC CORP
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