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:
Nov. 06, 2018
Filed:
Oct. 06, 2017
Google Inc., Mountain View, CA (US);
Daniel Adam Warren, San Francisco, CA (US);
Lawrence Frederick Heyl, Mountain View, CA (US);
Dietrich Ho, Mountain View, CA (US);
Morakinyo John Aina, Mountain View, CA (US);
Ian C. Smith, Mountain View, CA (US);
William Saperstein, San Carlos, CA (US);
Bhaskar Vadathavoor, Cupertino, CA (US);
GOOGLE LLC, Mountain View, CA (US);
Abstract
Systems for ensuring an audible alarm circuit sounds at a minimum magnitude of loudness are provided. Different circuitry embodiments discussed herein are each capable of assisting the audible alarm circuit in maintaining a minimum loudness threshold. Audible alarm circuit operation optimization can be achieved using embodiments that fall within anyone of four general categories: compensation networks, direct drive, dynamic tuning, and microphone feedback based dynamic tuning. Use of such circuitry can increase production yields by compensating for manufacturing variations of alarm components and aging characteristics of the components.