Method for updating embedded mobile electronic map data base in real time

Abstract

The invention relates to a method for updating an embedded mobile electronic map data base in real time, wherein map elements in the electronic map data base is firstly coded, and the IDs of the map elements are determined; the data of the relationship among the map elements is stored into the corresponding memory area of a map information storing device according to the IDs of the map elements; one item or a plurality of items of data of the relationship among the map elements can be extracted from the memory area of the map data, and the IDs of the map elements and the update state thereof are be obtained; data is acquired from a GPS / GPRS module and then is converted into geographic data compatible with the map data base, and whether the current travelling route belongs to certain map element is judged according to the coordinate figures of longitude and latitude; whether the map elements requires addition or modification is hinted according to the judged result; or by setting the travelling time threshold value, the map elements are automatically added when being more than the threshold value; finally, the updated data and the update state are stored into the map information memory area, thus electronic map data of a mobile navigation device can be stored and updated.

Description

technical field [0001] The invention relates to an interactive, real-time updated, intelligent embedded mobile electronic map database with memory function, especially suitable for storing and updating electronic map data of a mobile navigation device. Background technique [0002] At present, GPS / GPRS navigation has been widely used in various fields of wireless mobile communication, especially in PND (portable navigator device) and vehicle navigation equipment. And with the continuous development of the national automobile industry and road traffic, GPS navigation will increasingly show broad application prospects. However, because the navigation electronic map cannot be updated in time, it also greatly restricts the development of industries such as car navigation and personal mobile navigation. The current GPS navigation generally has insufficient navigation accuracy, and even misleads users. The main problem is that the electronic map in the navigation equipment cannot...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a real-time update method for an embedded mobile electronic map database, to solve the problem that the upgrade of the electronic map of the vehicle navigation equipment lags behind the development of road traffic, thereby greatly reducing the use of GPS / GPRS navigation cost, reducing the development cost and post-maintenance cost of the electronic map database of vehicle navigation equipment

Images