Patent ID: 8416148

Claim:
A method for controlling a portable device including first and second display units at opposing surfaces of the portable device, the method comprising: detecting, via a controller of the portable device, an unlock command for switching a state of the first display unit from a first locked state to an active state and switching a state of the second display unit from a second locked state to a ready-to-activate state; switching, via the controller, the state of the first display unit to the active state and switching the state of the second display unit to the ready-to-activate state when the unlock command is detected; detecting, via the controller, an unlock trigger for switching the state of the second display unit, which is in the ready-to-activate state, to the active state; and switching, via the controller, the state of the second display unit, which is in the ready-to-activate state, to the active state according to the detected unlock trigger, wherein the ready-to-activate state is an intermediate state between the second locked state and the active state.