Representative picture extracting means extracts representative pictures from a coded input signal which consists of representative pictures, motion parameters for motion compensation which refers the representative picture, and reference relationships, and outputs a coded representative picture signal. The present invention also provides methods of using cycloalkylmethylamine derivatives and compositions of cycloalkylmethylamine derivatives. At least one coat is mounted to at least one of the first and second frames. The tread has two axially outwardly arranged shoulder regions and further has a central tread region arranged between the two shoulder regions. Sensing circuitry is positioned in the maintenance device and is used for performing acoustical and vibration sensing of an engine of the vehicle.