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:
May. 13, 2025
Filed:
Apr. 25, 2023
Yamaha Corporation, Hamamatsu, JP;
Soichi Takigawa, Hamamatsu, JP;
Yohei Wada, Hamamatsu, JP;
Koji Yataka, Hamamatsu, JP;
Yoshinari Nakamura, Hamamatsu, JP;
Takahiro Asano, Hamamatsu, JP;
YAMAHA CORPORATION, Hamamatsu, JP;
Abstract
A keyboard apparatus according to an embodiment includes a keyboard and a mutual capacitance proximity sensor. The keyboard includes a first key and a second key arranged in an array direction with respect to the first key. The proximity sensor includes a first electrode having a portion extending from at least a first area below the first key to a second area below the second key, a second electrode arranged in the first area, and a third electrode arranged in the second area. The proximity sensor is a mutual capacitance type sensor and is configured to use a change in capacitance between the first electrode and the second electrode and a change in capacitance between the first electrode and the third electrode.