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Patent Searching and Data


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:
JP2019/023466
Publication Date:
March 05, 2020
Filing Date:
June 13, 2019
Export Citation:
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Assignee:
YAMAHA CORP (JP)
International Classes:
G01R31/00; G10H1/18; H01H9/54
Foreign References:
JP2009070771A2009-04-02
JPS59142599A1984-08-15
JPS499352B11974-03-04
JPH01136077A1989-05-29
JPH0643867A1994-02-18
JP2017167177A2017-09-21
JP2011197399A2011-10-06
JP2010127727A2010-06-10
US20160161367A12016-06-09
Attorney, Agent or Firm:
NAKAGAWA, Masahiro et al. (JP)
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