How to display the invalid key input on the television

摘要

When a key input signal corresponding to a key input is applied to a function key installed on a remote control for television function control or a matrix key on a control panel, There is provided an invalid key input display method of a television which enables OSD display information for warning an invalid key input state to be displayed on the screen.;To this end, according to the present invention, there is provided a television for performing a function corresponding to a video / reproduction of a television broadcast in response to a key operation by a plurality of function keys (4) provided in a function setting section (2) When a predetermined function key is key operated among the plurality of function keys 4 of the function setting unit 2, the custom code of the function control signal generated according to the key operation of the corresponding function key corresponds to the custom code of the corresponding television And determining whether or not the function corresponding to the key-operated function key is executed if it is determined that the custom code of the function control signal generated based on the predetermined function key operation is identical When the function key (4) of the function setting unit (2) is key operated, if it is determined that the corresponding function is already executed, the invalid state of the function key input is alarmed And a third step of causing the screen display information to be displayed on the screen.