Title:
DETECTION SYSTEM AND KEYBOARD INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2022/176740
Kind Code:
A1
Abstract:
This keyboard instrument comprises a coil to be detected installed on a movable member that is displaced by a user's playing action, a detection substrate, a control substrate separate from the detection substrate, and a wiring part. The detection substrate has a detection coil that faces the coil to be detected, and a detection circuit that generates a detection signal corresponding to the distance between the detection coil and the coil to be detected. The control substrate has a control IC that generates, from the detection signal, displacement data indicating the position of the movable member. The wiring part includes a wire for transmitting the detection signal from the detection substrate to the control substrate.
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Inventors:
MIYOSHI SHUNSUKE (JP)
TAKAHASHI YUJI (JP)
NISHIMURA NAOKI (JP)
HARIMOTO HIROSHI (JP)
TAKAHASHI YUJI (JP)
NISHIMURA NAOKI (JP)
HARIMOTO HIROSHI (JP)
Application Number:
PCT/JP2022/005148
Publication Date:
August 25, 2022
Filing Date:
February 09, 2022
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
G10H1/34
Domestic Patent References:
| WO2019122867A1 | 2019-06-27 |
Foreign References:
| JP2019097237A | 2019-06-20 | |||
| JP2014050177A | 2014-03-17 | |||
| JP2018180074A | 2018-11-15 | |||
| JP2018180074A | 2018-11-15 |
Attorney, Agent or Firm:
OHCHI INTERNATIONAL IP (JP)
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