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.

Date of Patent:
Sep. 12, 2017

Filed:

Aug. 16, 2016
Applicant:

Onkyo Corporation, Osaka, JP;

Inventors:

Kei Asao, Osaka, JP;

Tsuyoshi Kawaguchi, Osaka, JP;

Makoto Yoshida, Osaka, JP;

Takanori Shiozaki, Osaka, JP;

Yoshinori Nakanishi, Osaka, JP;

Hiroyuki Asahara, Osaka, JP;

Norimasa Kitagawa, Osaka, JP;

Assignee:

ONKYO Corporation, Neyegawa-shi, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 5/04 (2006.01); H03G 3/34 (2006.01); H03F 3/183 (2006.01); H03M 1/66 (2006.01); H03F 1/26 (2006.01); H03F 3/187 (2006.01); H03F 3/45 (2006.01); H03F 3/72 (2006.01);
U.S. Cl.
CPC ...
H03G 3/341 (2013.01); H03F 1/26 (2013.01); H03F 3/183 (2013.01); H03F 3/187 (2013.01); H03F 3/45475 (2013.01); H03F 3/72 (2013.01); H03M 1/66 (2013.01); H04R 5/04 (2013.01); H03F 2200/03 (2013.01);
Abstract

To realize active control ground that sets inverted output of an amplification circuit to ground with simple configuration. A DAPcomprises a positive side DACthat D/A-converts digital audio data into analog audio data, a positive side amplification circuitthat amplifies the analog audio data that the DACD/A-converts, a negative side DACthat D/A-converts the digital audio data into the analog audio data, and a negative side amplification circuitthat amplifies the analog audio data that the DACD/A-converts, and a CPU. The CPUmutes the DACin case of an ACG mode that sets output of the amplification circuitto ground.


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