Method for information point retrieval, information point retrieval device and navigation system

Abstract

The invention discloses a method for information point retrieval in a navigation system, an information point retrieval device using the method, and a navigation system, wherein the method for information point retrieval includes the following steps: selecting a retrieval area identifier; The area identification is analyzed to obtain the corresponding retrieval area; the navigation system retrieves the information points in the retrieval area obtained in the above steps. Since the input of the search area ID is much more convenient than the input of the search area name, by inputting the search area ID, the navigation system will automatically analyze the search area ID input by the user to obtain the corresponding search area, and then search for information points in the search area. For retrieval, the user simplifies the complex input process, avoiding the problem of not being able to input due to unfamiliar characters, and it is very convenient to use the information point retrieval device and navigation system that adopt this method for information point retrieval.

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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