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Semiconductor Components Industries Assigned Patent for Light-emitting-element Driving Circuit(Targeted News Service Via Acquire Media NewsEdge) By Targeted News Service ALEXANDRIA, Va., July 20 -- Semiconductor Components Industries, Phoenix, has been assigned a patent (8,222,838) developed by Takuya Takeuchi, Kakogawa, Japan, for a light-emitting-element driving circuit. The abstract of the patent published by the U.S. Patent and Trademark Office states: "There is provided a light-emitting-element driving circuit which comprises a light-emitting circuit unit in which a plurality of current paths in each of which a light-emitting element and a first switching element are connected in series are placed in parallel with each other between a power supply terminal connected to an input power supply and a common terminal, a common circuit unit in which a second switching element and a constant current source which supplies a predetermined current which is defined in advance are connected in series and which is placed between the common terminal and a ground terminal which is grounded, and a plurality of third switching elements each of which is placed between an anode terminal of the respective light-emitting element of the light-emitting circuit unit and ground, wherein a switching control is applied for the first switching elements, the second switching element, and the third switching elements." The patent application was filed on July 23, 2010 (12/842,076). The full-text of the patent can be found at http://patft.uspto.gov/netacgi/nph-Parser Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=82,22,838&OS=82,22,838&RS=82,22,838 Written by Kusum Sangma; edited by Anand Kumar. KS0720AK0720-762795 (c) 2012 Targeted News Service [ Back To TMCnet.com's Homepage ] |