Electronic device and control method thereof

The present invention relates to an electronic device and a method of controlling the same. The electronic device comprises an operation performing unit for performing a predetermined operation; a first main control unit for controlling the operation of the operation performing unit in a normal mode and changing to a power saving state in a standby mode; an input receiving unit for receiving an input signal; a second main control unit which can perform a process concerned with the input signal and which changes to a power saving state in the standby mode; and a sub-control unit for controlling the device such that the second main control unit performs the process of the input signal when the input signal is received in the standby mode. The second main control unit performs the process concerned with the received input signal corresponding to the control of the sub-control unit, controls the first main control unit such that the first main control unit is operated in a normal mode if the input signal corresponds to normal mode entry, and if not, returns to the power saving state in the standby mode. Thus, power consumption is minimized in the standby mode, and an operation of entering into the normal mode may be performed in response to various inputs.