US 11,054,958 B2
Aperature filtering for resistive multi-touch distortions
Ing-Yih J. Wang, Tucson, AZ (US); Herbert Braisz, Tucson, AZ (US); and Tony Chang, Arlington, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Nov. 10, 2016, as Appl. No. 15/348,734.
Application 15/348,734 is a division of application No. 13/828,561, filed on Mar. 14, 2013, abandoned.
Claims priority of provisional application 61/610,711, filed on Mar. 14, 2012.
Prior Publication US 2017/0060330 A1, Mar. 2, 2017
Int. Cl. G06F 3/045 (2006.01); G06F 3/041 (2006.01); H03K 17/96 (2006.01)
CPC G06F 3/045 (2013.01) [G06F 3/041661 (2019.05); H03K 17/9647 (2013.01); G06F 2203/04104 (2013.01); G06F 2203/04105 (2013.01)] 12 Claims
OG exemplary drawing
1. An apparatus comprising:
a touch screen having column electrodes and row electrodes, the column electrodes and the row electrodes forming sensor zones having respective sensor zone indices;
a touch screen controller coupled to the column electrodes and the row electrodes, the touch screen controller comprising a signal processing circuit; and
an aperture filter coupled to the signal processing circuit, the aperture filter having spatial aperture windows respectively aligned with the sensor zones, each spatial aperture window having a respective adjustable spatial aperture window size along an X-axis and along a Y-axis, the aperture filter configured to filter distortions from the touch screen according to the sensor zone indices and the spatial aperture window sizes.