Patent ID: 8797276

Claim:
A method of controlling a television receiver in a remote controller using a touch panel having a touchscreen exhibiting a plurality of coordinates, the method comprising: storing structure info nation between a main menu and a sub menu in a database (DB); displaying a main menu on the touchscreen of the touch panel, the main menu including at least one function key for controlling the television receiver, the touchscreen enabling a function key of the main menu to be selected by a user; displaying, in response to a first user selection of one of the at least one function key within the main menu, a sub menu that includes a set of keys corresponding to the selected function key of the main menu according to the stored structure information, and the display of the sub menu on the touchscreen wholly replacing the display of the main menu on the touchscreen; determining a type of parameter change for a second user selection based on a touch motion directionality, wherein the second user selection relates to the television receiver's function; determining a rate of change in parameter for the second user selection based on a dragging distance, wherein at least a key code corresponding to each dragging distance is pre-stored in the database; and transmitting, in response to the second user selection of one of the set of keys within the sub menu, a key code corresponding to the second user selection to the television receiver.