Navigation device and method capable of updating increment of map data

A map data and incremental update technology, which is applied in the field of car navigation, can solve problems such as inability to navigate and update specific areas, and achieve satisfactory experience, save map data update time, and ensure stability and reliability.
CN102944243AActive Publication Date: 2013-02-27SHENYANG MXNAVI CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG MXNAVI CO LTD
Publication Date
2013-02-27

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Abstract

The invention relates to a navigation device capable of updating an increment of map data. The navigation device comprises a map data storage device, a network connecting device, a GPS (Global Positioning System) receiving device, a display device, a map data managing module, a navigation functional module and a display device. A navigation method capable of updating the increment of the map data is characterized by comprising the following steps: dividing the map data according to an administrative region boundary; simultaneously updating the data by a navigation data supply module; before downloading differential map data from a server, obtaining summary information from the server and showing the summary information to a user; and after downloading the differential map data from the server, emphasizing the displaying of a detailed updated content in the differential map data on the device before the map data is updated. The navigation device provided by the invention has the advantages: the user can select one or more updating regions for updating the map data according to the individual requirement; the updating time is saved; the user can select to update or not; the user experience is met; and the running of the device is stable and reliable.
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Description

technical field

[0001] The invention relates to the field of car navigation, in particular to a navigation device and method capable of incrementally updating map data. Background technique

[0002] As the basis of car navigation system, map data plays a vital role in its accuracy and effectiveness. In addition to the spatial significance of geographic information data, its temporal significance is also very important. The traditional data update method is to update all the data at one time, which brings problems. Even if the user only updates one road, the entire map database needs to be updated. In order to meet the effectiveness of map data, the map update frequency will become higher and higher. The traditional data update method is not suitable for transmission in wireless networks, and cannot meet the user's requirements for the effectiveness of map data.

[0003] Therefore, it is proposed that only the changed part of the map data can be updated in the car navigati...

Claims

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