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:
May. 19, 2020
Filed:
Aug. 07, 2018
Applicant:
Yamaha Corporation, Hamamatsu-shi, JP;
Inventors:
Kentaro Nomoto, Hamamatsu, JP;
Masahiro Mukojima, Fukuroi, JP;
Assignee:
YAMAHA CORPORATION, Hamamatsu-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 29/00 (2006.01); G08B 29/12 (2006.01); H04R 1/40 (2006.01); H04R 3/04 (2006.01); H04R 27/00 (2006.01); G08B 25/08 (2006.01);
U.S. Cl.
CPC ...
H04R 29/004 (2013.01); G08B 25/08 (2013.01); G08B 29/12 (2013.01); H04R 1/406 (2013.01); H04R 3/04 (2013.01); H04R 27/00 (2013.01); H04R 29/00 (2013.01);
Abstract
A failure detection apparatus includes: an output portion that outputs from an audio output device a confirmation signal having a frequency in a band other than the audible band; an input portion to which an input signal is inputted from an audio input device; and a failure detection portion that detects whether the audio output device and the audio input device are operating normally on the basis of the confirmation signal and the input signal.