US 10,891,002 B2
Control method and touch display system
Pengfei Feng, Beijing (CN)
Assigned to CHIPONE TECHNOLOGY (BEIJING) CO., LTD., Beijing (CN)
Appl. No. 16/628,003
Filed by Chipone Technology (Beijing) Co., Ltd., Beijing (CN)
PCT Filed Oct. 17, 2018, PCT No. PCT/CN2018/110573
§ 371(c)(1), (2) Date Dec. 31, 2019,
PCT Pub. No. WO2019/205510, PCT Pub. Date Oct. 31, 2019.
Claims priority of application No. 2018 1 0386957 (CN), filed on Apr. 26, 2018.
Prior Publication US 2020/0218420 A1, Jul. 9, 2020
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/04166 (2019.05) [G06F 3/044 (2013.01); G06F 3/0412 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A control method for a touch display apparatus, the touch display apparatus comprising multiple touch sensing channels, and the control method comprising: dividing one frame into multiple sub-frames, wherein each sub-frame comprises a display time period and a touch control time period; performing display scanning on the touch display apparatus in the display time period to display a picture; performing touch control scanning on the touch display apparatus in the touch control time period to obtain a touch sensing signal; and obtaining touch sensing data according to the touch sensing signal and detecting touch according to the touch sensing data,
wherein performing touch control scanning on the touch display apparatus comprises:
if no touch is detected in a preset time period, entering a first mode in which the multiple touch sensing channels are short-circuited and one of the multiple touch sensing channels is scanned in the touch control time period of one of the multiple sub-frames; and
if touch is detected in the preset time period, entering a second mode in which the multiple touch sensing channels are respectively scanned in the touch control time periods of the multiple sub-frames,
wherein the frequency for the touch control scanning in the first mode is smaller than that for the touch control scanning in the second mode.