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:
Apr. 18, 2017
Filed:
Oct. 29, 2015
Applicant:
Trigence Semiconductor, Inc., Tokyo, JP;
Inventors:
Akira Yasuda, Tokyo, JP;
Jun-ichi Okamura, Tokyo, JP;
Assignee:
Trigence Semiconductor, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 29/00 (2006.01);
U.S. Cl.
CPC ...
H04R 29/003 (2013.01); H04R 2209/022 (2013.01); H04R 2209/041 (2013.01);
Abstract
A speaker control device in one embodiment includes a time to digital converter connected to a drive power source in series with a drive circuit for driving a plurality of coils of a speaker, the converter outputting a digital data in accordance with a voltage of the drive power source, and a monitor circuit detecting a state of the plurality of coils of the speaker based on digital data output by the time to digital converter.