Capacitive button interface device and method

A capacitive button interface device comprising:

• a touch screen;
• a capacitive button which is detachably attached to the touch screen;
• an input device through which an operation control command is input;
• a storage unit which stores a program for registering the capacitive button and setting information;
• and
• a control unit which detects capacitive button information attached to an upper surface of the touch screen, stores or registers the capacitive button information in the storage unit, detects an input from the capacitive button, which has completed registration, and executes an operation corresponding to the capacitive button;
• wherein when an input of a preregistered capacitive button is detected, the control unit detects button input information for the capacitive button, processes the button input information to calculate a button input information processing value, searches for a button number corresponding to the button input information processing value from the storage unit, and executes an operation or command set to correspond to the button number.

A capacitive button interface method comprising:

• outputting, by a control unit, a predesignated guidance message when a button registration command is input through an input device and counting a time for which a user presses a capacitive button attached to a touch screen according to the guidance message;
• detecting, by the control unit, button input information for the capacitive button when a designated time for which the user presses the capacitive button elapses;
• processing, by the control unit, the button input information to calculate button input information processing values when the button input information is detected;
• setting, by the control unit, the button input information processing values to a button number;
• and
• displaying, by the control unit, a list of commands or functions corresponding to the button number, receiving a command or function selected by the user to correspond to each button, and storing the command or function in a storage unit to complete button registration.