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:
May. 05, 2015
Filed:
Nov. 30, 2009
Ankit Seedher, Banaglore, IN;
Raja J. Prabhu, Bangalore, IN;
Shyam S. Somayajula, Bangalore, IN;
ST-Ericsson SA, Plan-les-Ouates, CH;
Abstract
A device implementing a scheme for reduction of pop-up noise is disclosed. The device comprises an audio sub-system () having an integrator () for amplifying an input signal () and a modulation circuit () including one or more comparators. The audio subsystem () is further provided with a feedback loop () across the integrator () and the modulation circuit () to calibrate an offsets outputs of the integrator () and the modulation circuit (). The feedback loop () includes an integrator-offset loop () across the integrator () to calibrate an offset () in the output of the integrator (), and an offset calibration loop () across the modulation circuit () to calibrate an offset () in the output of the modulation circuit ().