Abstract:
A display apparatus and method are provided. The display apparatus includes a display unit, a user interface (UI) generator which generates a UI to operate an executed application program, a communication unit which receives a control signal from a control device of a plurality of control devices wherein each of the plurality of control devices includes a control grade in order to select the UI; and a controller which determines whether the control device of the plurality of control devices which has transmitted the control signal has a control authority to select the UI, based on the control grade of the control device of the plurality of control devices, and operates the application program according to the control signal if the control device of the plurality of control devices has the control authority.