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Navigation device map data increment updating method

A technology of navigation device and map data, applied in directions such as road network navigators, can solve the problems of poor pertinence and low update efficiency, and achieve the effects of fast pertinence, fast update speed and convenient operation

Inactive Publication Date: 2011-01-26
江苏新科软件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a map data incremental update method of a navigation device with strong pertinence, high update efficiency and convenient use by users, so as to solve the defects of low update efficiency and low pertinence in the aforementioned prior art

Method used

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  • Navigation device map data increment updating method
  • Navigation device map data increment updating method
  • Navigation device map data increment updating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] See Figure 4, the navigation device that present embodiment adopts comprises CPU unit 1, GPS unit 2, touch screen 3, interface circuit 4, sound circuit 5, display control device 6, storage device 7 and remote controller interface 8; GPS unit 2, touch screen 3, interface Circuit 4 , sound circuit 5 , display control device 6 , storage device and remote controller interface 8 are all bidirectionally electrically connected to CPU unit 1 .

[0034] The CPU unit 1 is used to receive and process various instructions.

[0035] GPS unit 2 receives signals from GPS positioning satellites, detects the current position and moving direction of the vehicle, and sends the above signals to CPU unit 1 .

[0036] The touch panel 3 is used to input operation instructions to the CPU unit 1, such as setting a destination. At the same time, the touch screen 3 also displays a map image, and displays a simulated route determined through the calculation of the navigation route, and simultan...

Embodiment 2

[0049] The navigation device used in this embodiment is the same as that in embodiment 1, and the formation method and content of difference data are also the same as in embodiment 1. The incremental update method for map data of the navigation device of the present embodiment adds the step of automatic incremental update after starting up in the first step of the embodiment, specifically comprising the following steps:

[0050] (a) Turn on the navigation device and start the navigation procedure.

[0051] (b) The navigation device terminal collects the map data block ID and version number within a certain range around the vehicle.

[0052] (c) Request whether there is differential data from the server according to the version number of the surrounding data of the vehicle; after receiving the range and version number, the server queries the latest data version number within the range, and sends the differential data of the data block with the updated version number Prepared a...

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Abstract

The invention discloses a navigation device map data increment updating method which comprises the following steps of: starting a navigation program for setting a destination by a user; sending a difference update request to a server by a navigation device terminal; carrying out path calculation by the navigation device terminal, meanwhile, waiting for a server terminal to return difference update data; if difference data exists, carrying out map data update by the navigation device terminal and renewedly carrying out path planning and line guiding by utilizing the updated map data; and if the difference data does not exist, carrying out line guiding after a path is worked out. The method judges a range required to be updated according to a departure site and the destination of a of the user vehicle, thus the update range is greatly reduced, and the difference data file volume is small; when the map data is updated, the data flow is small, and the update speed is high; and compared with the traditional update method, the method of the invention has pertinence, is quicker and improves the map data update efficiency of the navigation device.

Description

technical field [0001] The invention relates to a method for updating a map of a navigation device, in particular to a method for incrementally updating map data of a navigation device. Background technique [0002] With the development of the Global Positioning System (Global Positioning System, referred to as GPS), navigation devices using GPS have been installed on various vehicles that require navigation. The GPS antenna of the car navigation device terminal receives the data information indicating latitude and longitude transmitted by the GPS satellite, combined with the electronic map stored in the car navigation device, the position coordinates determined by the GPS satellite signal are matched with this, and the navigation is determined. The exact position of the object in the electronic map. Its appearance has brought a lot of convenience to people's travel. The driver only needs to input the destination into the car navigator, and the system will automatically cal...

Claims

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Application Information

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IPC IPC(8): G01C21/32G01C21/34
Inventor 秦春达李晓华
Owner 江苏新科软件有限公司
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