CONTROL METHOD AND ELECTRONIC DEVICE AND SYSTEM EMPLOYING THE SAME

摘要

An electronic device for controlling a display device includes a computing module, an adjusting module and a first communication module. The computing module computes a distance D between the electronic device and the display device capable of communicating with the electronic device. The adjusting module generates an adjusting signal according to the distance D. The first communicating module is configured to transmit the adjusting signal to the display device, for adjusting the size of an image displayed on the display device corresponding to the adjusting signal.