APPARATUS FOR DECODING A CHANNEL SIGNAL INTO AN INFORMATION SIGNAL AND REPRODUCING ARRANGEMENT PROVIDED WITH THE APPARATUS

摘要

An apparatus for decoding a channel signal into an information signal is disclosed. The channel signal comprises subsequent blocks (BLOCK) of information, a block of information comprising a sync word (SYNC) and a plurality of channel words (cw1, cw2, ...). The information signal comprising subsequent information words. The apparatus comprising an input terminal (1) for receiving the channel signal, a conversion unit (3) for converting the channel words into the information words. Further, an error concealment unit (6) is present. The information signal obtained is supplied to an output terminal (8). The conversion unit (3) comprises a channel word detector (in 20) for establishing whether channel words received are channel words not belonging to a group of valid channel words. If so, the channel word detector is adapted to supply a detection signal upon such detection. This enables the detection signals to be counted so as to establish a mis-synchronization of the decoding apparatus.