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:
Nov. 23, 2021
Filed:
Jun. 14, 2018
Sharp Kabushiki Kaisha, Osaka, JP;
Masashi Mayumi, Osaka, JP;
Teruhisa Masui, Osaka, JP;
Atsushi Aoki, Osaka, JP;
Yousuke Nakamura, Osaka, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A position detection device includes a sensor driving unit driving a touch sensor by providing a drive signal of a sine-wave to the touch sensor and a position detecting unit detecting a position of a touch on the touch sensor. The position detecting unit includes a first detection processing unit performing a touch detection process using an amplitude modulation scheme during a first detection processing period and a second detection processing unit performing the touch detection process using a frequency modulation scheme during a second detection processing period. A position detection method includes a sensor driving step of driving the touch sensor and a position detecting step of detecting the position. The position detecting step includes a first detection processing step of performing the touch detection process using the amplitude modulation scheme and a second detection processing step of performing the touch detection process using the frequency modulation scheme.