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

Claim 11:
12. The method of claim 11, wherein performing the analytical ambiguity reduction process comprises:
determining a deconvolution circular matrix that is a pseudoinverse matrix of an excitation matrix comprising the sequence and the rotated sequence;
calculating deconvoluted data using the deconvolution circular matrix and sense signals;
applying a common mode filter to the deconvoluted data to obtain filtered data;
restoring a common value along the first set of receiver electrodes and the second set of receiver electrodes to correct the baseline; and
applying an orthogonal common mode filter to remove artifacts along the first set of receiver electrodes and the second set of receiver electrodes to obtain a capacitance map of a touch panel.