Electronic devices, near-field wireless communications system and method for establishing a wireless communications link between two electronic devices

摘要

An electronic device with touch-link functionality includes a touch panel, a signal processing circuit and a controller. The touch panel includes a first transmitting electrode for transmitting a first signal. The signal processing circuit provides the first signal to the first transmitting electrode. The first signal has a first frequency that is adjustable. The controller is coupled to the touch panel and the signal processing circuit. The controller adjusts the first frequency to make the first frequency correspond to an effective communications range. Within the effective communications range, another electronic device with touch-link functionality is able to receive the first signal, whereas outside the effective communications range, the another electronic device with touch-link functionality is unable to receive the first signal.