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:
Oct. 29, 2024
Filed:
Dec. 28, 2020
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa, JP;
Abstract
The present disclosure provides a touch sensor device that can improve efficiency of acquiring signal components and that can effectively address noise and electromagnetic interference. The touch sensor device includes a driver unit that drives an electrode having a capacitance that changes due to contact, using a voltage having a waveform of any shape, the voltage gradually changing from a first voltage value that is higher than a reference voltage to a second voltage value that is lower than the reference voltage, and from the second voltage value to the first voltage value, a monitor unit that monitors a drive current obtained by driving the electrode, a rectifying unit that performs full-wave rectification of the current monitored by the monitor unit, and a smoothing unit that smooths the rectified current and converts the rectified current to a current that corresponds to the capacitance of the electrode.