US Patent 11842004 Method of signal transmission, touch control chip and electronic device

The present application provides a method of signal transmission, which can improve transmission performance of an uplink signal between a touch screen and a stylus. The method is performed by a touch control chip in an electronic device, a touch screen of the electronic device includes a transmission channel for sending an uplink signal to a stylus, and the method includes: detecting whether a user's hand and/or the stylus approaches or touches the touch screen; determining a sending mode of the uplink signal according to a detection result, where the transmission channel for sending the uplink signal in the touch screen is different in different sending modes.