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)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, 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.