Patent ID: 6960997

Claim:
A method for transmitting location-related data information between a main station and a mobile terminal, comprising: (i) ascertaining a position of the mobile terminal and transmitting the position, as well as information on a size of a map section reproducible on a reproduction device of the mobile terminal, from the mobile terminal to the main station; (ii) forming location-related data information for the mobile terminal in the main station as a function of the ascertained position of the mobile terminal; (iii) transmitting the location-related data information from the main station to the mobile terminal; (iv) reproducing the received location-related data information on the reproduction device of the mobile terminal; (v) ascertaining a new position of the mobile terminal and transmitting the new position to the main station; (vi) selecting a new map section in the main station, the selected new map section including the new position of the mobile terminal; (vii) transmitting image data from the main station to the mobile terminal as a function of differences between the selected new map section and a present map section; and (viii) updating the present map section dependent upon the transmitted image data and reproducing the updated map section on the reproduction device, wherein: step (ii) further includes selecting a section of a geographical map in the main station, the selected map section including the ascertained position of the mobile terminal; step (iii) further includes transmitting the selected map section from the main station to the mobile terminal; step (iv) further includes reproducing the transmitted map section having the ascertained position on the reproduction device; step (vi) further includes subdividing the present map section into individual image blocks, computing a movement vector for each of the image blocks in dependence upon a change in position from a previous position to the new position of the mobile terminal, estimating the new map section starting from the present map section and the movement vectors, and comparing the estimated map section to the new map section by difference formation, so that a difference image is created; step (vii) further includes transmitting the difference image to the mobile terminal, and transmitting the movement vectors from the main station to the mobile terminal; and step (viii) further includes computing the map section to be reproduced on the reproduction device from the present map section, by shifting the present map section block-wise with an aid of the movement vectors and overlaying the shifted map section with the difference image.