Patent ID: 11868561
Assignee: CYPRESS SEMICONDUCTOR CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. The apparatus of claim 14, wherein the processing core is further to:
receive, from the ADC circuitry, digital data corresponding to the sense signals;
determine a deconvolution circular matrix that is a pseudoinverse matrix of an excitation matrix comprising the sequence and the rotated sequence;
calculate deconvoluted data using the deconvolution circular matrix and the digital data;
apply a common mode filter to the deconvoluted data to obtain filtered data;
restore a common value along the set of receiver electrodes to correct a baseline in the filtered data; and
apply an orthogonal common mode filter to remove artifacts along the set of receiver electrodes to obtain a capacitance map of the touch panel.