A control device which controls a broadcast receiver, comprising: a communication interface unit configured to communicate with the broadcast receiver; a touch display unit configured to receive a touch input; a sensor configured to sense an orientation of the control device being held by a user; and a control unit configured to: identify whether the control device is in a vertical mode or a horizontal mode based on the orientation sensed by the sensor characterized in that the control unit is further configured to receive, via the communication interface unit, information regarding an operation mode of the broadcast receiver, and control the touch display unit to display a user interface, UI, corresponding to the operation mode from among a plurality of Uls for controlling the broadcast receiver based on the received information in response to identifying that the control device is in the vertical mode and to display a content received from the broadcast receiver, in a full screen size of the touch display unit, in response to identifying that the control device is in the horizontal mode, the content being a same content which is currently displayed on a screen of the broadcast receiver. a communication interface unit configured to communicate with the broadcast receiver; a touch display unit configured to receive a touch input; a sensor configured to sense an orientation of the control device being held by a user; and a control unit configured to: identify whether the control device is in a vertical mode or a horizontal mode based on the orientation sensed by the sensor characterized in that the control unit is further configured to receive, via the communication interface unit, information regarding an operation mode of the broadcast receiver, and control the touch display unit to display a user interface, UI, corresponding to the operation mode from among a plurality of Uls for controlling the broadcast receiver based on the received information in response to identifying that the control device is in the vertical mode and to display a content received from the broadcast receiver, in a full screen size of the touch display unit, in response to identifying that the control device is in the horizontal mode, the content being a same content which is currently displayed on a screen of the broadcast receiver. identify whether the control device is in a vertical mode or a horizontal mode based on the orientation sensed by the sensor characterized in that the control unit is further configured to receive, via the communication interface unit, information regarding an operation mode of the broadcast receiver, and control the touch display unit to display a user interface, UI, corresponding to the operation mode from among a plurality of Uls for controlling the broadcast receiver based on the received information in response to identifying that the control device is in the vertical mode and to display a content received from the broadcast receiver, in a full screen size of the touch display unit, in response to identifying that the control device is in the horizontal mode, the content being a same content which is currently displayed on a screen of the broadcast receiver.