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:
Dec. 27, 2016
Filed:
Jul. 22, 2013
Yamaha Corporation, Hamamatsu-shi, JP;
Jun Ishii, Hamamatsu, JP;
YAMAHA CORPORATION, Hamamatsu-Shi, JP;
Abstract
An audio signal output from a tone generatoris fed into a coilprovided in a transducer for vibrating a sound board, so that a sound signal is generated by the vibration of the sound board. A microcomputerobtains temperature values of the coilmeasured by two different methods, and suspends supply of audio signals to the coilor reduces the amount of audio signals supplied to the coilif the difference between the two coil temperature values is outside a predetermined range. In a case as well where one of the two coil temperature values has risen excessively, the microcomputersuspends supply of audio signals to the coilor reduces the amount of audio signals supplied to the coil