Navigation apparatus for searching interest point and method for searching interest point

A technology of a navigation device and a point of interest, which is applied to a navigation device capable of retrieving points of interest and the field of retrieving points of interest, can solve the problems of small retrieval range, influence retrieval efficiency, and large amount of data usage, and achieve simple and fast retrieval. Effect

Inactive Publication Date: 2008-12-17
江苏华科导航科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of the above prior art is that when the existing navigation system retrieves the points of interest, it can only retrieve the relevant points of interest within the preset geographical range around the current location or within the geographical range along the route. The scope is small, resulting in incomplete search results
In addition, although the existing navigation system can choose to search in a larger geographical range when executing the retrieval program, so as to obtain more complete retrieval r

Method used

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  • Navigation apparatus for searching interest point and method for searching interest point
  • Navigation apparatus for searching interest point and method for searching interest point
  • Navigation apparatus for searching interest point and method for searching interest point

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Experimental program
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Embodiment 1

[0036] (Embodiment 1, a navigation device capable of retrieving points of interest)

[0037] See figure 1 , The navigation device of this embodiment has a display unit 5 on a CPU unit 1, a GPS receiver 2, a map database storage unit 3, and a program database storage unit 4. The GPS receiver 2 is bidirectionally electrically connected to the CPU unit 1; the CPU unit 1 is bidirectionally electrically connected to the map database storage unit 3, the program database storage unit 4 and the display unit 5 respectively.

[0038] The programs stored in the program database storage unit 4 include boot programs, touch screen signal processing and display modules, interest point retrieval programs and navigation programs.

[0039] The display unit 5 includes a touch display screen.

[0040] The data stored in the map database storage unit 3 includes an electronic map database, a POI name database, an POI additional information database and a POI index database.

[0041] The POI name...

Embodiment 2

[0047] (Embodiment 2, the method for the navigation device to retrieve points of interest)

[0048] See Figure 4 , in the method for retrieving points of interest by a navigation device of this embodiment, the navigation device used is obtained from Embodiment 1. The retrieval method of the present embodiment comprises the following steps:

[0049] ① After the navigation device is powered on, the CPU unit 1 runs the boot program, and then calls out from the program database storage unit 4 to run the touch screen signal processing and display module, and displays the boot operation screen on the touch screen, and the CPU unit 1 is working Always run the touch screen signal processing and display module;

[0050] 2. manually click the search button in the start-up operation screen displayed on the touch screen, then the CPU unit 1 calls out and then runs the place of interest search program from the program database storage unit 4, and displays an input interface that can inp...

Embodiment 3

[0057] (Embodiment 3, the method for the navigation device to retrieve points of interest)

[0058] See Figure 4 , all the other are identical with embodiment 2, and difference is: in step 5. or step 6., under the control of CPU unit 1, these point-of-interest names are displayed as retrieval results by the touch display screen, when a certain point-of-interest name is manually clicked Afterwards, the CPU unit 1 takes out the additional information data group corresponding to the point of interest according to the associated mark in the point of interest name data, and controls to display the characteristic introduction information, latitude and longitude information of the point of interest on the touch screen of the display unit 5. And whether to use the point of interest as the prompt button of the destination; if the prompt button is manually pressed, the CPU unit 1 runs the navigation program to generate and display the corresponding navigation route.

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PUM

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Abstract

The invention relates to a navigation device capable of searching interest points and a method for searching interest points. The Chinese characters related to name data of all interest points in an interest point name database are arranged in a certain sequence, and an index item consisting of index records is set for each different Chinese character, wherein each index record of the index item corresponds to one interest point name data including the specific Chinese character, and all of the index items constitute the interest point index database of the navigation device. Each index record includes a name code corresponding to the interest point name data and a position code of the position of the specific Chinese character in the interest point name data. When the navigation device is used for searching the interest points, the records of each index item corresponding to the inputted character sequence are compared one by one to obtain a group of index records satisfying the requirement, and interest points are displayed after extracting the interest point name data according to the group of index records. The navigation device has the advantage of reliable, simple and rapid searching.

Description

technical field [0001] The invention relates to a method for retrieving interest points of a navigation device. Background technique [0002] Points of interest refer to places that are more important or frequently used in a certain area and face the whole society, such as banks, major shopping malls, major business buildings, hotels, government agencies, entertainment venues, major scenic spots, etc. The addresses of units belonging to a certain industry in the region, such as the addresses of units in electrical appliances manufacturing and clothing sales. [0003] Chinese patent document CN1924526A discloses an electronic map keyword retrieval method and device for satellite navigation. The method includes: the user inputs keywords to be retrieved through the touch screen of the navigator, and selects the keyword category and the geographical range to be retrieved, and then the central processing unit performs retrieval in the storage unit; after the retrieval is complet...

Claims

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Application Information

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IPC IPC(8): G01C21/26G01C21/34G01C21/36G06F17/30
Inventor 秦春达杨赖土
Owner 江苏华科导航科技有限公司
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