Patent ID: 9470542
Filing Date: 2016-10-18
CPC Classification: G01C

Claim Text:
1. A method for supplying encoded geoimage data from a server unit to at least one navigation receiver module for a geographical region pre-defined by geographical image data stored in the server unit, via at least one wireless communication interface between the server unit and the at least one navigation receiver module, comprising: transmitting a message at least with position information from a navigation receiver module to the server unit; selecting an expectancy range within the geographical region by the server unit based at least on the position information; determining first geoimage data reproducing the expectancy range; encoding the first geoimage data in the server unit to produce first encoded geoimage data; transmitting the first encoded geoimage data from the server unit to the navigation receiver module via the at least one wireless communication interface; determining a buffer region surrounding the expectancy range based on the expectancy range selected; determining, by the server unit, second geoimage data for displaying the buffer region; encoding the second geoimage data to obtain second encoded geoimage data differing from the first encoded geoimage data by at least one of image encoding method and coding depth; and transmitting the second encoded geoimage data from the server unit to the navigation receiver module via the at least one wireless communication interface.