Navigation electronic map incremental bag and self-checking method

Abstract

The invention discloses a navigation electronic map incremental bag and a self-checking method, which comprise the following steps: a server side manufactures the electronic map incremental bag according to external data dynamic maintenance navigation elements; a client side of the navigation electronic map downloads the electronic map incremental bag; the client side of the navigation electronic map reads and analyzes the electronic map incremental bag; the client side of the navigation electronic map conducts self-checking of the update of the electronic map. The navigation electronic map incremental bag and the self-checking method have the advantages that the incremental bag and the self-checking method of the incremental bag with the navigation elements and navigation element logic connection topology relationship serving as the data entity are achieved. The navigation elements and navigation topology relationship are transmitted to the client side in the form of the self-checking incremental bag, dynamic updating of the navigation elements and the navigation topology relationship of the navigation electronic map are achieved, and whether the data incremental updating is success is verified by the self-checking method.

Description

[0001] Tianjin Normal University Doctoral Fund Project (52XB1008), National Natural Science Foundation of China (41101352). technical field [0002] The invention belongs to the field of self-checking navigation electronic map update, and relates to an incremental package and a self-checking method of a navigation electronic map with navigation elements such as navigation points of interest POI, road centerlines, navigation lines, and traffic regulations as content entities. Background technique [0003] At present, in the field of incremental update of navigation electronic maps, there are many researches on dynamic topology implementation methods and they are relatively mature. The version-based offline update mode is mainly used in the update technology. [0004] The version-based offline update mode is to generate a complete set of navigation data (navigation elements, background elements and topological relations) according to certain product specifications, and the dat...

AI Technical Summary

Problems solved by technology

[0004] The version-based offline update mode is to generate a complete set of navigation data (navigation elements, background elements and topological relations) according to certain product specifications, and the data producer downloads them from CD-ROM or online according to a certain period (half a year or a year). Released in the form of , customers obtain data and update their own data according to their own needs and actual conditions. The first disadvantage of this method is that the update cycle is long

The second disadvantage is that it is not easy to achieve online update through network transmission, because the amount of navigation data is large, and it is easily affected by external conditions

The third disadvantage is that data security is difficult to guarantee. This method is released in the form of full-page data. Once the data is stolen, it will cause major leaks or infringements.

In addition, the incremental package only includes the updated content. In addition to updating the data, the user also needs to verify whether the update result is correct. The incremental package also needs to include verification information. The publication numbers are CN101162149A, CN101319912A and CN101726309A In the patent, none of the proposed incremental update methods solves the problem of incremental update data verification

Therefore, the existing technology cannot meet the requirements of electronic map incremental package including full navigation elements and incremental package self-verification

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