Method for the supply of encoded geoimage data
First Claim
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.
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Accused Products
Abstract
Uncoded geographical image data for a pre-defined geographical region is stored in a server unit and at least one wireless communication interface is provided between the server unit and 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. Uncoded geoimage data reproducing the expectancy range is determined and the first uncoded geoimage data is encoded in the server unit. The encoded geoimage data is then transferred to the navigation receiver module from the server unit via the wireless communication interface.
14 Citations
13 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification