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. 02, 2019
Filed:
Nov. 06, 2017
Applicant:
Nuvoton Technology Corporation, Hsinchu, TW;
Inventor:
Peter Holzmann, San Jose, CA (US);
Assignee:
NUVOTON TECHNOLOGY CORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 19/01 (2006.01); H04R 1/04 (2006.01);
U.S. Cl.
CPC ...
H04R 19/016 (2013.01); H04R 1/04 (2013.01); H04R 2410/03 (2013.01); H04R 2499/11 (2013.01);
Abstract
An acoustic energy detection circuit can include a microphone interface circuit configured for coupling to a microphone. The microphone interface circuit is configured to intermittently activate the microphone to detect acoustic energy and convert the acoustic energy to an electrical signal. The acoustic energy detection circuit also includes a comparator circuit for receiving the electrical signal and comparing the electrical signal with a threshold signal. The comparator circuit is configured to output an output signal to indicate detection of acoustic energy.