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:
Aug. 14, 2018
Filed:
Apr. 10, 2018
Kawai Musical Instruments Manufacturing Co., Ltd., Shizuoka, JP;
Kaoru Matsunaga, Shizuoka, JP;
KAWAI MUSICAL INSTRUMENTS MANUFACTURING CO., LTD., Shizuoka, JP;
Abstract
In an electronic piano including plural keys and a sound source device (sound emission section) that emits a sound by pressing of the key, an intermediary resonance state of a resonance sound can be reproduced by including a resonance circuit that inputs a sound source from the sound source device corresponding to the each key and outputs a resonance sound, a position detection sensor (multi-stage switch section) in which plural switches close sequentially according to a key pressing state of the key, and a resonance sound control device that controls the resonance sound by an open/close state of plural switches by the position detection sensor.