[May 17, 2013] Semiconductor Components Industries, Sanyo Semiconductor Assigned Patent Tweet (Targeted News Service Via Acquire Media NewsEdge) By Targeted News Service ALEXANDRIA, Va., May 17 -- Semiconductor Components Industries, Phoenix, and Sanyo Semiconductor, Gunma, Japan, have been assigned a patent (8,441,462) developed by Kazuyuki Kobayashi, Midori, Japan, and Yasuhiro Kaneta, Isesaki, Japan, for a "signal processing circuit for a capacitive touch panel capable of switching between a differential-input sensor circuit and a single-input sensor circuit." The abstract of the patent published by the U.S. Patent and Trademark Office states: "This invention offers a signal processing circuit of an electrostatic capacity type touch panel which is capable of switching between a differential input mode and a single input mode and has an extended adjustable range of an offset in the single input mode. The signal processing circuit of this invention includes a first sensor circuit of a differential input type, a second sensor circuit of a single input type, a third and fourth electrostatic capacitors that are variable capacitors for calibration to adjust the offset in an output voltage of the first sensor circuit, and a switching control circuit to control so as to put in operation one of the first and second sensor circuits. The switching control circuit also controls so that the third and fourth electrostatic capacitors for calibration are connected in parallel to each other when the second sensor circuit is put in operation." The patent application was filed on Nov. 17, 2010 (12/948,180). 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=8,441,462&OS=8,441,462&RS=8,441,462 Written by Satyaban Rath; edited by Hemanta Panigrahi. SR0517HP0517-878038 (c) 2013 Targeted News Service [ Back To TMCnet.com's Homepage ]