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:
Mar. 06, 2012
Filed:
Mar. 19, 2009
Tetsuo Umeda, Kanagawa, JP;
Tetsuo Umeda, Kanagawa, JP;
Sony Ericsson Mobile Communications AB, Lund, SE;
Abstract
A contact-sensing device includes a capacitance contact-sensing unit including contact-sensing areas configured to at least detect contact with an external object; a calibration-value setting unit configured to set a calibration value to be used to calibrate capacitances of the contact-sensing areas based on capacitances of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit; a calibration determining unit configured to determine whether calibration of the capacitances of the contact-sensing areas is to be carried out based on capacitances of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit; and a capacitance calibrating unit configured to calibrate capacitances of all of the contact-sensing areas using the calibration value set by the calibration-value setting unit when the calibration determining unit determines that calibration is to be carried out.