A digital broadcasting transmissionreception system having improved receiving performance and signal processing method thereof. The display controller is configured to control a display unit to display marks corresponding to a plurality of images. The preprocessor maintains statistics including selected criteria and corresponding values for the installed filters. Embodiments may also allow a nonresident to select a delivery medium that is incompatible with the format of a message created by a resident by converting the resident created message to a message format compatible with the delivery medium.