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:
Jan. 09, 2018
Filed:
May. 08, 2015
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
John Paul Lesso, Edinburgh, GB;
Emmanuel Philippe Christian Hardy, Edinburgh, GB;
Cirrus Logic, Inc., Austin, TX (US);
Abstract
This application relates to audio amplifier circuitry (). An amplifier module () is located in a signal path between an input () and an output (). A detection module () is configured to detect a characteristic of a load () electrically coupled, in use, to the output. A distortion setting controller () is provided for selecting one of a plurality of stored distortion settings {p} based on the detected characteristic of the load; and a pre-distortion module () is configured to apply a first transfer function to a signal in the signal path prior to said amplifier module. The first transfer function is based on the selected distortion setting and for at least one of the stored distortion settings the corresponding first transfer function comprises a non-linear distortion function.