Method for loading, locating and navigating special point data and equipment thereof
A technology of navigation equipment and point data, which is applied in the field of GPS navigation, can solve the problems of occupying a lot of network resources, downloading large data, and taking a long time to achieve the effect of avoiding excessive downloading data.
Active Publication Date: 2014-07-02
SHENZHEN CARELAND TECH
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a thematic point data download that can be updated according to user interests and selections, aiming at the defects of large download data, long time consumption, and large network resource occupation when updating the entire map in the prior art. method
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Embodiment 1
[0060] After the user has downloaded the data of a certain thematic point, and learned its name, location and description information, the present invention also constructs a method for locating the downloaded thematic point. Such as figure 2 As shown, in Embodiment 1 of the method of using thematic point positioning in the present invention, the method includes the following steps:
[0061] Step S201. The navigation device receives the positioning instruction of the thematic point, for example, you can select a downloaded point of interest or location point, and then click the "positioning" icon on the navigation device;
[0062] Step S202. The navigation device judges whether the map data of the area where the thematic point is located has been downloaded, if yes, go to step S208; if not, go to step S203. The map data includes thematic point data and road network data, wherein the road network data includes: intersection information, coordinates, start and end points of ro...
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The invention relates to a method for loading, locating and navigating special point data, which comprises the steps of: navigation equipment receives special information which is inputted by a user; the navigation equipment sends a loading request of special point data to special point data memory equipment, wherein the loading request of the special point data comprises the special information; and the navigation equipment receives and memorizes the special point data which is sent by the special point data memory equipment, wherein the special point data is found by the special point data memory equipment according to the special information. By implementing the technical scheme of the invention, a user can load the special point data which is selected according to own interest, thereby being capable of avoiding the defects such as the over large of load data, the over long of time consumption and the overmuch of occupied resources caused by updating a whole map.
Description
technical field [0001] The invention relates to the field of GPS navigation, more specifically, to a method for downloading, positioning and navigating thematic point data, a navigation device, a special point data storage device and a map data storage device. Background technique [0002] The GPS antenna of the GPS navigation system receives the data information transmitted by at least 3 of the 24 GPS satellites around the earth, combined with the electronic map stored in the navigation terminal, the position coordinates determined by the GPS satellite signal match this, and determine The exact position of the navigation object in the electronic map. [0003] Since the geographic location information will be updated continuously over time, for more accurate navigation, it is necessary to continuously download updated map data from the server. However, currently updating the map data is to update the entire map, which cannot be updated according to the user's interests and ...
Claims
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IPC IPC(8): G01C21/36G01C21/26G01C21/30G01S19/01
Inventor 张文星
Owner SHENZHEN CARELAND TECH