Title:
CIRCUIT-CLOSURE-DETERMINATION-THRESHOLD SETTING DEVICE AND METHOD, KEYBOARD DEVICE, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/044731
Kind Code:
A1
Abstract:
Provided is a circuit-closure-determination-threshold setting device comprising: a detection unit (42) for detecting the voltage value of a part where a circuit (16) opens and closes; a storage unit (43) for storing, as a stored value (Vx), a value based on the voltage value detected by the detection unit when the voltage value has fallen below a threshold (TH1) for determining that the circuit has closed; and an update unit (44) for updating the threshold on the basis of the stored value stored by the storage unit.
Inventors:
HANDA TAKASHI (JP)
Application Number:
PCT/JP2019/023466
Publication Date:
March 05, 2020
Filing Date:
June 13, 2019
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
G01R31/00; G10H1/18; H01H9/54
Foreign References:
JP2009070771A | 2009-04-02 | |||
JPS59142599A | 1984-08-15 | |||
JPS499352B1 | 1974-03-04 | |||
JPH01136077A | 1989-05-29 | |||
JPH0643867A | 1994-02-18 | |||
JP2017167177A | 2017-09-21 | |||
JP2011197399A | 2011-10-06 | |||
JP2010127727A | 2010-06-10 | |||
US20160161367A1 | 2016-06-09 |
Attorney, Agent or Firm:
NAKAGAWA, Masahiro et al. (JP)
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