A light emitting device drive controller is disclosed that comprises a first port that is connected to one end of a first light emitting device group where two light emitting devices are connected in parallel in the opposite directions; a second port that is connected to the other end of the first light...http://www.google.com/patents/US7551101?utm_source=gb-gplus-sharePatent US7551101 - Light emitting device drive controller, and a light emitting device driving apparatus
