Map data downloading method and navigation device

A technology of map data and navigation equipment, applied in navigation, surveying and mapping, navigation, measuring devices, etc., can solve problems such as lack of map data, untimely update of local data, and deviation between paths and actual conditions, etc., to achieve convenient use and shorten download time , the effect of reducing the cost of use

Inactive Publication Date: 2014-12-24
CARELAND TECH SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is often a lack of part of the map data or due to the lack of timely update of local data, resulting in deviations between the planned route and the actual situation, which brings great convenience to users

Method used

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  • Map data downloading method and navigation device
  • Map data downloading method and navigation device
  • Map data downloading method and navigation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] This embodiment provides a method for downloading map data, the process can refer to image 3 , including the following steps:

[0059] 301. The navigation device is connected to the server;

[0060] Connection methods can be: GPRS, WCDMA, TD-SCDMA, CDMA2000, wifi network, etc. The server is the server of the online map service provider.

[0061] 302. The navigation device determines the location information of the current location, and sends the location information to the server;

[0062] Specifically, the location information for determining the current location is determined by GPS, Beidou, gyroscope or base station.

[0063] 303. The server determines an electronic map area according to the location information of the current location; the electronic map area is an area within a preset range around the current location. The area within the preset range around the current location is a circular area with the current location point as the center and a preset radius...

Embodiment 2

[0070] This embodiment provides a method for downloading map data, the process can refer to Figure 4 , including the following steps:

[0071] 401. The navigation device is connected to the server;

[0072] Connection methods can be: GPRS, WCDMA, TD-SCDMA, CDMA2000, wifi network, etc. The server is the server of the online map service provider.

[0073] 402. The navigation device determines the destination according to the user's operation instruction, and sends the destination location information to the server; the destination can be obtained by user input;

[0074] 403. The server determines an electronic map area according to the destination location information; the electronic map area is an area within a preset range around the destination. The area within the preset range around the destination is a circular area whose center is the destination and whose radius is a preset value. The preset range is preset by the server, or preset by the navigation device and sent ...

Embodiment 3

[0081] This embodiment provides a method for downloading map data, the process can refer to Figure 5 , including the following steps:

[0082] 501. The navigation device is connected to the server;

[0083] Connection methods can be: GPRS, WCDMA, TD-SCDMA, CDMA2000, wifi network, etc. The server is the server of the online map service provider.

[0084] 502. The navigation device determines the specified range area according to the user operation, and sends the specified range area to the server; the specified range area is an electronic map area arbitrarily defined by the user, which may be an electronic map area defined around the current location ;

[0085] 503. The server determines an electronic map area according to the specified area; the electronic map area is the specified area;

[0086] 504. The navigation device downloads the electronic map data of the specified area from the server.

[0087] Preferably, before 504, further include: 505, judge whether the conn...

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Abstract

The invention discloses a map data downloading method and a navigation device and belongs to the navigation field. The method comprises the following steps of: connecting the navigation device into a server; transmitting navigation information to the server; confirming electronic map regions according to the navigation information; downloading electronic map data in the electronic map regions from the server and storing them into the navigation device. By the map downloading method, corresponding regions can be selected according to requirements to download the electronic map data, in comparison with the method for downloading the entire map, downloading time and flow, and storage space can be saved.

Description

technical field [0001] The invention relates to location service technology, in particular to a method for downloading map data and a navigation device. Background technique [0002] A navigation device refers to a device with a location service function and related functions. Its working principle is that the navigation device determines the location coordinates of a specific location and matches them with the location coordinates recorded in the electronic map stored by itself, so as to determine the location of the vehicle equipped with the device. The accurate position of the navigation object of the navigation device in the electronic map. The navigation device can be a vehicle terminal, a portable navigator, a mobile phone terminal, and the like. Navigation objects can be vehicles, pedestrians, etc. After the user sets the starting point and the destination, the navigation device will calculate the navigation route, and navigate for the user according to the calculat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00H04L29/08
CPCG01C21/00H04L67/53
Inventor 张文星
Owner CARELAND TECH SHENZHEN
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