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:
Jun. 27, 2017
Filed:
Aug. 28, 2015
Stmicroelectronics (Alps) Sas, Grenoble, FR;
Christian Fraisse, Grenoble, FR;
Angelo Nagari, Grenoble, FR;
STMicroelectronics (Alps) SAS, Grenoble, FR;
Abstract
A circuit may include an audio amplifier () configured to amplify an input signal (S) to generate an output signal (S, S) suitable for driving a loud speaker (). A first circuit () may be configured to generate a first analog signal (S) based on a current level drawn by the loud speaker (), and a second circuit () may be configured to generate a second analog signal (S) based on a voltage supplied across the loud speaker (). A third circuit () may be configured to generate a third analog signal (RESIDUE) based on the difference between the first and second analog signals, and modify the input signal (S) based on the third analog signal.