Device and method for synchronism update of map data on handhold GPS terminal device

Abstract

The invention relates to a device and a method for synchronous updating of the map data in a handheld GPS terminal device. The device comprises a map database as well as a map data engine module and a synchronous module which are connected in turn, wherein, the synchronous module comprises a communication functional unit and an execution functional unit; the execution functional unit is connected with the map data engine module, while the communication functional unit is connected with the communication functional unit of an opposite terminal device through a data communication link. The method includes the following steps that: data communication connection is set up; a synchronous updating command is transmitted to an opposite terminal; the opposite terminal carries out command analysis; the map data engine module, which carries out map data searching and data extraction according to the type of the command, sends the results to the opposite terminal through the synchronous module, or completes map data insertion and reconstruction and updates system timestamp. The device and the method reduce system overhead and increase data exchange efficiency; moreover, user-defined data information is automatically protected from being covered by updated data according to requirements.

Description

technical field [0001] The present invention relates to the field of handheld devices, in particular to the technical field of handheld GPS terminal equipment, and specifically refers to a device and method for synchronously updating map data on a handheld GPS terminal equipment. Background technique [0002] In modern life, people are using more and more portable handheld devices such as mobile phones, and more and more functions have been added to these devices. The most important function is the global positioning system function, and among them, the most The most important thing is the validity and real-time performance of GPS positioning data. However, in the prior art, the data update of the current GPS handheld device only supports complete coverage of the data. The disadvantage of this method is obvious: the efficiency of data exchange is low, and the update of partial data is not supported. [0003] For example: in the map data of the whole country, if the user onl...

AI Technical Summary

Problems solved by technology

In the prior art, the data update of the current GPS handheld device only supports the complete coverage of the data. The disadvantage of this approach is obvious: the efficiency of data exchange is low, and the update of part of the data is not supported.

[0003] For example: in the map data of the whole country, if the user on

Images