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:
Oct. 22, 2024
Filed:
Sep. 28, 2022
Synaptics Incorporated, San Jose, CA (US);
Synaptics Incorporated, San Jose, CA (US);
Abstract
A system and method for mitigating background capacitance and for mitigating the effect of temperature drift in compensation circuitry is provided. The system includes a plurality of sensor electrodes including a first sensor electrode and a second sensor electrode. The first sensor electrode is coupled to a first channel and the second sensor electrode is coupled to a second channel. The system includes a processing system configured to drive the plurality of sensor electrodes with a sensing signal; drive the first channel with a first compensation signal and the second channel with a second compensation signal; determine a first differential capacitance between the first channel and the second channel; drive the first channel with the second compensation signal and the second channel with the first compensation signal; determine a second differential capacitance between the first channel and the second channel; and mitigate temperature drift using the first differential capacitance and the second differential capacitance.