Map updating method of guidance terminal, guidance terminal and system thereof

A navigation terminal and map update technology, applied in road network navigators, radio wave measurement systems, satellite radio beacon positioning systems, etc., can solve the problems of low update frequency, long update cycle, and large data volume, and achieve rapid update , the effect of reducing the amount of data

Active Publication Date: 2010-04-14
NAVINFO
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  • Abstract
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Problems solved by technology

[0003] The current map update can only be updated according to the large version of the map data, the update frequency is low, and all updates are updated, that is, the national data is updated, so the amount of data is relatively large, and the size of each update data is the smallest and it is close to 2000M bytes. , and the update cycle is long

Method used

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  • Map updating method of guidance terminal, guidance terminal and system thereof
  • Map updating method of guidance terminal, guidance terminal and system thereof
  • Map updating method of guidance terminal, guidance terminal and system thereof

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Embodiment Construction

[0055] In the specific embodiment of the present invention, firstly, the track is recorded by the electronic navigation device in the navigation process, and compared with the map data, the track difference is obtained, and the map change data is obtained according to the track difference, and the map change data is encoded and sent to the server , which is decoded by the server and displayed on the electronic map, thereby identifying and displaying changes in the map.

[0056] The server side generates incremental update data according to the map change data, and notifies the navigation device to perform the update operation, and then the navigation device downloads the update data package from the server side for updating. Since the data package is only a data package for recording map changes, Therefore, the data that needs to be transmitted during the update process is greatly reduced.

[0057] Before describing in detail the method for updating the map of the navigation t...

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Abstract

The invention provides a map updating method of a guidance terminal, a guidance terminal and a system thereof. The method includes that the guidance terminal records wheel paths through GPS points during a guidance process, obtains difference reports of recorded map changes through comparing the recorded wheel paths with map data, encodes the difference reports to obtain encoded difference reports, transmits the encoded difference reports to a server terminal through a wireless communication network, and receives incremental updating data generated according to the difference reports to perform updating operation of an electronic map. The map updating method of a guidance terminal, the guidance terminal and the system thereof enable the map to be updated timely, and reduce needed transmission data volume during an updating process because of incremental data.

Description

technical field [0001] The invention relates to the technical field of electronic navigation, in particular to a method for updating a map of a navigation terminal, a navigation terminal and a system. Background technique [0002] Electronic navigation map users have higher and higher requirements for maps, mainly reflected in the accuracy and update frequency of map data, and the rapid update of map data is the general trend. [0003] The current map update can only be updated according to the large version of the map data, the update frequency is low, and all updates are updated, that is, the national data is updated, so the amount of data is relatively large, and the size of each update data is the smallest and it is close to 2000M bytes. , and the update cycle is long. Contents of the invention [0004] The purpose of the present invention is to provide a map update method for a navigation terminal, a navigation terminal and a system, which can reduce the amount of da...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/30G01S19/39
Inventor 曹晓航杜宇程徐瑞峰刘盛理
Owner NAVINFO
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