Potable Device, Display apparatus, Display system and Method for controlling a power of display apparatus thereof

The portable device, display device, a display system, and its display device, the power supply control method is provided. If the display device power supply control method of the display system by using the motion sensor, while the portable device operates in standby mode, detecting a movement of the portable device and the portable device motion is detected, the portable device of the portable device If the mode from the standby mode and switching to the normal mode, switching to the normal mode, when the portable device is free power to generate an on-signal and sends it to the display device, the pre-power-on signal is received, the display device, the display device to enable all of the components.