US 12,014,004 B2
Touch control method, circuit system, and touch device
Wei-Jing Hou, Guangdong (CN); Jian-Wu Chen, Guangdong (CN); Hui-Dan Xiao, Guangdong (CN); Da-Chun Wu, Guangdong (CN); Zhen-Huan Mou, Guangdong (CN); You-Gang Gong, Guangdong (CN); and Guan-Qun Pan, Guangdong (CN)
Assigned to FocalTech Electronics (Shenzhen) Co., Ltd., Shenzhen (CN)
Appl. No. 17/434,098
Filed by FocalTech Electronics (Shenzhen) Co., Ltd., Shenzhen (CN)
PCT Filed Feb. 26, 2020, PCT No. PCT/CN2020/076833
§ 371(c)(1), (2) Date Aug. 26, 2021,
PCT Pub. No. WO2020/173468, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 201910142832.X (CN), filed on Feb. 26, 2019.
Prior Publication US 2022/0137776 A1, May 5, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01); H03K 17/96 (2006.01)
CPC G06F 3/04166 (2019.05) [G06F 3/044 (2013.01); H03K 17/962 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A touch control method applied to a touch device, the touch device comprising a plurality of touch electrodes, the touch control method comprising:
step S1, sending a scanning signal to the plurality of touch electrodes, the scanning signal being a multi-frequency scanning signal;
step S2, acquiring first touch data and second touch data according to the scanning signal, the first touch data and the second touch data being respectively acquired when scanning the plurality of touch electrodes with the scanning signal of different frequencies; and
step S3, defining a plurality of touch nodes by the touch device, each of the plurality of touch nodes corresponding to one of the first touch data and one of the second touch data, defining any touch node having a difference between the corresponding first touch data and the corresponding second touch data less than a preset difference threshold as a target touch node, and calculating a current touch position according to the first touch data and the second touch data of the target touch node.