APPARTUS AND METHOD FOR INFORMING RECEIVING SENSITIVITY IN A DIGITAL MULTIMEDIA BROADCASTING SYSTEM AND SYSTEM THEREOF

摘要

An apparatus and a method for displaying the receiving sensitivity in a DMB(Digital Multimedia Broadcasting) system and a system thereof are provided to divide the shade area network and non-shade area network and display the receiving sensitivity. A DMB broadcasting receiver receives broadcasting service data through a broadcasting receiving member(501) and a public key detection/receiving member(511). An RSSI(Received Signal Strength Indication) measuring member(531) measures the intensity of the broadcasting service data and transmits the measuring result to a control member(521). The public key detection/receiving member extracts only TII transmission part among synchronization channels and outputs the public key detection signal and the detected TII key value to the second decoding key production member(513).