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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.:

US 9985518 B1

PDFFull Text
Date of Patent:
May. 29, 2018

Filed:

Jan. 19, 2017

Circuit and musical instrument

Applicant:

Yamaha Corporation, Hamamatsu-shi, JP;

Inventors:

Jun Ishii, Hamamatsu, JP;

Satsuki Kawahashi, Hamamatsu, JP;

Takeshi Kono, Hamamatsu, JP;

Yoshiyuki Harada, Hamamatsu, JP;

Assignee:

YAMAHA CORPORATION, Hamamatsu-Shi, JP;

Attorney:

Rossi, Kimms & McDowell LLP

Primary Examiner:

Vivian Chin

Assistant Examiner:

Ubachukwu Odunukwe

Int. Cl.
CPC ...
H03F 99/00 (2009.01); H02J 7/34 (2006.01); H02M 3/04 (2006.01); G10H 1/32 (2006.01); G10H 3/18 (2006.01); H02M 1/32 (2007.01); H04R 3/00 (2006.01); H03F 3/187 (2006.01); G06F 1/26 (2006.01); H02J 3/00 (2006.01); H03F 3/181 (2006.01); H02J 1/10 (2006.01); H02M 3/00 (2006.01); H02J 7/00 (2006.01); H02M 1/00 (2006.01); G10H 1/46 (2006.01);
U.S. Cl.
CPC ...
H02M 3/04 (2013.01); G06F 1/26 (2013.01); G10H 1/32 (2013.01); G10H 3/186 (2013.01); H02J 7/0065 (2013.01); H02M 1/32 (2013.01); H03F 3/187 (2013.01); H04R 3/00 (2013.01); G06F 1/263 (2013.01); G10H 1/46 (2013.01); G10H 2230/035 (2013.01); H02J 1/10 (2013.01); H02J 1/102 (2013.01); H02J 3/005 (2013.01); H02J 7/34 (2013.01); H02J 7/345 (2013.01); H02J 2007/0067 (2013.01); H02M 3/00 (2013.01); H02M 2001/0048 (2013.01); H03F 3/181 (2013.01); H03F 2200/03 (2013.01); H03F 2200/511 (2013.01);
Abstract

A circuit includes: a signal processing unit which is configured to perform signal processing; an amplifying unit which is configured to amplify a signal output from the signal processing unit; a first power supplying path which is extended from a battery to the signal processing unit; a second power supplying path which is branched from the first power supplying path, and which is extended to the amplifying unit; a power limiting unit which is provided in the second power supplying path, and which is configured to limit power flowing in the second power supplying path; and a capacitor which is connected to the second power supplying path, and which is configured to supplement power to be supplied to the amplifying unit.

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