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. 09, 2020
Filed:
Dec. 21, 2016
Applicant:
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Inventors:
Cory J. Peterson, Austin, TX (US);
Anand Ilango, Austin, TX (US);
Assignee:
Cirrus Logic, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 (2006.01); H03M 3/00 (2006.01); H04R 3/00 (2006.01); H03M 1/10 (2006.01); H03M 1/00 (2006.01); H03M 1/74 (2006.01); H03M 1/68 (2006.01);
U.S. Cl.
CPC ...
H03M 3/504 (2013.01); H03M 1/002 (2013.01); H03M 1/1023 (2013.01); H04R 3/007 (2013.01); H03M 1/68 (2013.01); H03M 1/742 (2013.01);
Abstract
A digital-to-analog converter (DAC) for an audio system in a media device, such as a portable media device or smart phone, may be operated to turn off portions of the DAC to reduce power consumption. Segments of a segment-able DAC may be powered off when the output level of the DAC is lower than the full scale output of the DAC. For example, DAC elements within a finite impulse response (FIR) DAC may be turned off when a desired output level can be obtained with less than all DAC elements of the FIR DAC.