Map data downloading method, downloading device and server

Abstract

The invention discloses a downloading method for map data, comprising: a user terminal searches whether or not there is data of map piece corresponding to map region need to be required stored locally, if so, reading data of the map piece stored locally and executing continuous map data processing operation; if not, downloading data of the map piece from the server and executing continuous map data processing operation. The invention further discloses a downloading device for map data and a downloading server as well. The invention is capable of enabling the user to obtain quickly and accurately the map data, to accomplish personified and agile map data download aiming at different users, to reduce downloading time of the map data, to reduces storage space occupied, at the same time to reduces cost of network data stream, to reduce service cost of the user and to reduce dependency of the network, which reduces network cover rate and influence of network signal intensity for the user who uses the map.

Description

technical field [0001] The invention relates to a data downloading method and device, in particular to a map data downloading method, downloading device and server. Background technique [0002] With the development and progress of society, the sharp increase in the number of private cars, the development and popularization of Global Positioning System (Global Positioning System, GPS) and satellite positioning technology, the further development of wireless communication technology, the navigation of ordinary civilian vehicles and the wireless location of mobile phones Businesses such as services are gradually emerging. In these services, map data is one of the indispensable elements, and a large amount of location information or navigation information is generated and provided to users based on map data. In order to quickly and accurately provide location information or navigation information to users, it is necessary to download and obtain map data quickly and efficiently...

AI Technical Summary

Problems solved by technology

[0006] 1. Client devices need a large-capacity memory to store a large amount of map data, which is not easy to implement on some mobile devices (such as mobile phones), and devices equipped with large-capacity memory are often more expensive;

[0007] 2. In order to reduce the occupied storage space, the map data is usually compressed, thus reducing the map quality, and the map performance is rough and not fine enough;

[0008] 3. It is inconvenient to update the map data, and the map data cannot be updated in time, but the user needs to manually update the map data

[0011] 1. Since the map data is downloaded from the network in real time, the network delay will lead to slow access to the map, so that users cannot quickly obtain map data, and also affect the user's sense of use;

[0012] 2. Every time the user needs to use the map, he must download the map data from the network in real time, so the network data traffic fee will be generated, which increases the user's use cost;

[0013] 3. The area where users can use the map is determined by the area covered by the network. In areas where the network is not covered or the signal is not good, it seriously affects the user's download and use of map data.

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