US 11,842,004 B2
Method of signal transmission, touch control chip and electronic device
Guanjun Zhang, Shenzhen (CN)
Assigned to SHENZHEN GOODIX TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed by SHENZHEN GOODIX TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed on Oct. 15, 2021, as Appl. No. 17/503,015.
Application 17/503,015 is a continuation of application No. PCT/CN2019/128285, filed on Dec. 25, 2019.
Prior Publication US 2022/0035502 A1, Feb. 3, 2022
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/04162 (2019.05) [G06F 3/0441 (2019.05); G06F 2203/04106 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of signal transmission, wherein the method is performed by a touch control chip in an electronic device, a touch screen of the electronic device comprises a transmission channel for sending an uplink signal to a stylus, and the method comprises:
detecting whether a the stylus approaches or touches the touch screen;
determining a sending mode of the uplink signal according to a detection result, wherein the transmission channel for sending the uplink signal in the touch screen is different in different sending modes;
wherein determining the sending mode of the uplink signal according to the detection result, comprising:
determining that the sending mode is a second sending mode if it is not detected that the stylus approaches or touches the touch screen, wherein multiple groups of the transmission channels in the touch screen in the second sending mode send the uplink signal in sequence; and
determining that the sending mode is a third sending mode if it is detected that the stylus approaches or touches the touch screen, wherein the transmission channel located near the stylus in the touch screen in the third sending mode sends the uplink signal.