| 摘要 |
The invention relates to a method for preparing encoded geoimage data from a server unit, transferring said data to at least one navigation receiver module. A geographical region is pre-defined by means of uncoded geographical image data stored in the server unit and at least one wireless communication interface is provided between the server unit and the at least one navigation receiver module. At least one position information message is transmitted from the navigation receiver module to the server unit and an expectancy range is selected in the server unit according to the transmitted position information from the pre-defined geographical region. Furthermore, first uncoded geoimage data reproducing the expectancy range is determined and the first uncoded geoimage data is encoded in the server unit. The first encoded geoimage data is then transferred to the navigation receiver module from the server unit via the wireless communication interface. |
