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. 19, 2020
Filed:
Apr. 02, 2018
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Miao Song, Austin, TX (US);
Xiaofan Franky Fei, Austin, TX (US);
Xin Zhao, Austin, TX (US);
Tejasvi Das, Austin, TX (US);
Lei Zhu, Austin, TX (US);
Jing Bai, Tempe, AZ (US);
Alan Mark Morton, Austin, TX (US);
Cirrus Logic, Inc., Austin, TX (US);
Abstract
A signal processing system may include a modulation stage configured to generate a modulated input signal, an open-loop switched mode driver coupled to the modulation stage and configured to generate an output signal from the modulated input signal, a voltage regulator configured to generate a supply voltage that supplies electrical energy to the open-loop switched mode driver, and a control subsystem configured to, when a magnitude of the modulated input signal falls below a threshold magnitude, control the voltage regulator to control the supply voltage such that the output signal varies non-linearly with the modulated input signal for magnitudes of the modulated input signal below the threshold magnitude.