A drive device for a vehicle having an automatic transmission, which has a hydrodynamic torque converter. In this process, a fiber is drawn through a bath of molten liquid metal so as to coated with the latter, the liquid metal bath being maintained in a crucible of the \u201clevitation\u201d type, which at least partly eliminates contact between the liquid metal and the crucible. When the copyright protection information in the transmission header indicates compliance with the copyright information contained in the content of the transmission frame, the copyright information in the content is fetched based on the signal format type information of the transmission header. The method could also include setting an extremity limit.