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:
Jul. 25, 2017
Filed:
Apr. 23, 2014
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
John Paul Lesso, Edinburgh, GB;
Emmanuel Philippe Christian Hardy, Edinburgh, GB;
James Thomas Deas, Edinburgh, GB;
Toru Ido, Yokohama, JP;
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Abstract
This application relates to circuitry for processing sense signals generated by MEMS capacitive transducers for compensating for distortion in such sense signals. The circuitry has a signal path between an input () for receiving the sense signal and an output () for outputting an output signal based on said sense signal. Compensation circuitry () is configured to monitor the signal at a first point along the signal path and generate a correction signal (S); and modify the signal at at least a second point along said signal path based on said correction signal. The correction signal is generated as a function of the value of the signal at the first point along the signal path so as to introduce compensation components into the output signal that compensate for distortion components in the sense signal. The first point in the signal path may be before or after the second point in the signal path. The monitoring may be performed in an analogue or a digital part of the signal path and in either case the modification may be applied in an analogue or a digital part of the signal path.