Text data filtering method of navigation system

Abstract

The invention judges the current location of a moving object with the help of guiding information received by a GPS receiver and travel state detecting signal of the moving object detected by a sensor arranged on the moving object through a mixed guiding method, reads map data of a specified area from a map data storage part by referring to the judged current location of the moving object, and compares the map data with the current location of the moving object; meanwhile, a picture display area is set to output the map of the picture display area and display on the picture, subsequently select the text data of the picture display area and judge if the text data is stored in a buffer; the data is stored in the buffer only when not stored in the buffer, output by a display part and displayed on the picture, to make sure only one street name is displayed when more than one street names are the same, so as to accurately transmit the name information of streets around the current location of the moving object to the users.

Description

technical field [0001] The present invention relates to a text data filtering method of a navigation system. The method is responsible for detecting the current position of a moving object such as a vehicle, and after comparing the detected current position of the moving object with map data, it can be carried out through the screen of the display unit. In the updated and displayed navigation system, when the map is displayed on the screen, the text data is filtered to prevent the same text data from being displayed repeatedly. Background technique [0002] The function of the navigation system is to use the guidance messages sent by multiple GPS satellites in the Global Positioning System (GPS: Global Positioning System), and the information detected by multiple sensors such as gyroscopes and speed sensors installed on moving objects. The detection signal of the moving state of the moving object detects the current position of the moving object, and compares the detected cu...

AI Technical Summary

Problems solved by technology

[0006] Therefore, when displaying map data on the screen with the street name as the center, for example figure 1 As shown, it often happens that the same street names "W NORFOLK ST" and "W IRVING ST" are repeatedly displayed in succession in various sessions, and thus cause the map to be zoomed in and out, causing the street names to overlapping situations

Instead, it creates confusion for the user to confirm the street name

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