Method and device for incremental updating of electronic map

Abstract

The invention discloses a method and a device for incremental updating of an electronic map, and is used for reducing a stored data volume needed by incremental updating of the electronic map so that the method and the device are suitable for mobile terminal equipment with a small storage capacity and meanwhile the efficiency of incremental updating of the electronic map is taken into account. In the method for incremental updating of the electronic map, overall elements and local elements of a new-version electronic map and an old-version electronic map are respectively stored, wherein the local elements are stored according to regions. The method comprises the following steps of: comparing the local elements of the new-version electronic map with the local elements of corresponding regions of the old-version electronic map according to the regions; and carrying out incremental updating on the local elements of the old-version electronic map by using the local elements of the new-version electronic map.

Description

technical field [0001] The present invention relates to the technical field of electronic map update, and in particular, to a method and device for incremental update of electronic map. Background technique [0002] The wide application of satellite positioning technology and mobile Internet technology has promoted the development of electronic map navigation services and location-based services related industries. At this stage, the navigation software is developing in the direction of intelligence, convenience and personalization, and the accuracy of the electronic map information used by the navigation software directly affects the accuracy of the navigation results. In order to ensure the accuracy of the electronic map, the electronic map provider will update the electronic map once every three months or more than half a year or a year. The electronic map used by the navigation software can be updated according to the updated electronic map provided by the electronic ma...

AI Technical Summary

Problems solved by technology

In order to realize the incremental update of the electronic map, in the prior art, each type of map element in the electronic map is stored according to the pre-divided areas, that is, each area stores a piece of element data, so that for the global elements in the electronic map For example, the data in each region is the same, so there is a large amount of redundant data in the data stored in each region, resulting in a huge amount of stored data. It is not suitable for providing electronic map services to mobile terminal devices such as mobile phones.

However, if the data of each map element is stored regardless of the region, for the local element, when performing an incremental update, it is necessary to search for its corresponding new version data within the entire data range provided by the entire electronic map, resulting in a long search time. Reduced the efficiency of incremental update of electronic maps

Images