Information point retrieval method, device and navigation system

Abstract

The invention discloses a method for retrieving information points in a navigation system, a device and the navigation system for retrieving information points by the method. The method comprises the following steps: selecting retrieval region identification; analyzing the retrieval region identification by using the navigation system to obtain a corresponding retrieval region; and retrieving information points in the retrieval region obtained in the above step by using the navigation system. Since it is more convenient to input the retrieval region identification than to input a retrieval region name, the retrieval region identification is input, and then automatically analyzed by the navigation system, so that the corresponding retrieval region is obtained. Therefore, information points are retrieved in the obtained retrieval region, and complex input process is simplified, thus avoiding the problem that input cannot be carried out because the user does not know rarely used characters. The device and the navigation system that adopt the method are very convenient to be used for retrieving information points.

Description

technical field [0001] The invention relates to the field of GPS navigation, more specifically, to a method for searching information points in a navigation system, an information point searching device and a navigation system using the method. Background technique [0002] At present, the global positioning system (Global Positioning System, GPS) for vehicles is one of the important application directions of GPS navigation. The GPS antenna of the car 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 car navigation terminal, the position coordinates determined by the GPS satellite signal and this match to determine the exact position of the navigation object in the electronic map. [0003] figure 1 Shows the structural composition of the existing navigation system: [0004] Described navigation system comprises: loudspeaker 1, chuck device 2, input device ...

AI Technical Summary

Problems solved by technology

[0020] However, in the process of selecting an administrative area, the user needs to manually input the name of the administrative area in order to perform a targeted search within the administrative area. Since the name of the administrative area may be an uncommon word, the user may not be able to smoothly select the desired In addition, the administrative area is filtered through the keyword retrieval method of manually entering the name of the administrative area. The process of inputting Chinese characters is time-consuming, especially when driving with GPS navigation. It takes a lot of time, the operation is complicated, and it is inconvenient to use

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