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:
Sep. 09, 1997
Filed:
Jul. 26, 1995
Paul A Kuban, Plainfield, IL (US);
Michael N Kloos, Elgin, IL (US);
Dien N Nguyen, Cortland, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An audio automatic gain control (AGC) circuit (301) employs a method (400, 500) and apparatus (300) for mitigating noise in an output signal (307) of the audio AGC circuit (301). The audio AGC circuit (301) or a circuit coupled to the audio AGC circuit, such as a speech encoder (302), determines (405) whether audio information is present in an input signal (137) to the audio AGC circuit (301). When audio information is not present, the audio AGC circuit (301) applies (411) a gain to the input signal (137) that is less than a current gain being applied, thereby mitigating noise in the audio AGC circuits output signal (220) when audio is not present.