The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 2015
Filed:
Oct. 28, 2013
Mstar Semiconductor, Inc., Hsinchu County, TW;
Yu-Che Su, Hsinchu County, TW;
Jia-Hong Huang, Hsinchu County, TW;
Wen-Chieh Yang, Hsinchu County, TW;
Tai-Lai Tung, Hsinchu County, TW;
MSTAR SEMICONDUCTOR, INC., Hsinchu County, TW;
Abstract
A capacitance detection apparatus for a touch panel includes an N number of capacitors. The detection apparatus generates an N number of different input signals, and provides an iinput signal of the input signals to an icapacitor. The N number of input signals correspond to a delayed sequence of a maximum length sequence or the maximum length sequence. The detection apparatus sums up an N number of response signals, which are generated after providing the N number of input signals to the N number of capacitors, to generate a summed signal. The summed signal is multiplied by the iinput signal and integrated to generate an iintegrated signal. The detection apparatus estimates capacitance values of the N number of capacitors according to the N number of integrated signals, respectively.