A seatbelt buckle system is disclosed that allows rotation of the seatbelt buckle in a transverse direction with respect to the vehicle body. The DC-offset correction circuit further comprises a DC blocking circuit coupled to the summing output of the summing device and having a DC blocking output for providing an offset corrected output signal. The images of the virtual screen are translated according to the type of the computer system to which it is transmitted. Then, the receiving node transmits a synchronization confirmation signal to the transmitting node.