Title:
KEYBOARD DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/102392
Kind Code:
A1
Abstract:
A keyboard device according to one embodiment includes a keyboard and a mutual capacitance-type proximity sensor 70. The keyboard includes a first key and a second key that is positioned in an arrangement direction in relation to the first key. The proximity sensor includes a first electrode 77 that has a section extending at least from a first region 800a under the first key to a second region 800b under the second key, a second electrode 75-3 that is positioned in the first region 800a, and a third electrode 75-6 that is positioned in the second region 800b. The proximity sensor 70 uses the variation in the capacitance between the first electrode 77 and the second electrode 75-3, and the variation in the capacitance between the first electrode 77 and the third electrode 75-6.
Inventors:
TAKIGAWA SOICHI (JP)
WADA YOHEI (JP)
YATAKA KOJI (JP)
NAKAMURA YOSHINARI (JP)
ASANO TAKAHIRO (JP)
WADA YOHEI (JP)
YATAKA KOJI (JP)
NAKAMURA YOSHINARI (JP)
ASANO TAKAHIRO (JP)
Application Number:
PCT/JP2021/039433
Publication Date:
May 19, 2022
Filing Date:
October 26, 2021
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
G10H1/00; G10H1/043; G10H1/053; G10H1/18; G10H1/34
Foreign References:
| JP2019512831A | 2019-05-16 | |||
| JP2000338977A | 2000-12-08 | |||
| JP2010128544A | 2010-06-10 |
Attorney, Agent or Firm:
TAKAHASHI, HAYASHI AND PARTNER PATENT ATTORNEYS, INC. (JP)
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