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. 09, 2013
Filed:
Oct. 19, 2010
Paul Kohut, Berkeley, CA (US);
Peter L. Winship, Berkeley, CA (US);
Peter Kowalcyzk, Berkeley, CA (US);
Steven Metz, San Francisco, CA (US);
Kurt Keown, Fremont, CA (US);
Paul Kohut, Berkeley, CA (US);
Peter L. Winship, Berkeley, CA (US);
Peter Kowalcyzk, Berkeley, CA (US);
Steven Metz, San Francisco, CA (US);
Kurt Keown, Fremont, CA (US);
Meyer Sound Laboratories, Incorporated, Berkeley, CA (US);
Abstract
A circuit for reducing noise in Class D amplifiers has a power stage voltage control means () responsive to defined signal conditions of the audio signal input (). The power stage voltage control means is operative to lower the voltage at the supply voltage input () of the amplifier's switching power output stage () upon the detection of a defined condition in the audio signal input such that the Class-D amplifier operates at reduced voltage ('idles') during the defined audio input signal condition.