GLOBAL POSITIONING SYSTEM TERMINAL DEVICE AND NAVIGATION METHOD THEREOF
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United States of America Patent
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Issued Date -
Dec 9, 2010
app pub date -
Jun 8, 2010
filing date -
Jun 8, 2009
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a navigation method. The navigation method provides a navigation display while a GPS terminal device is moving along a road with a traffic marking marked thereon and when GPS information is not available. The navigation method captures a plurality of images comprising the road image with traffic markings and calculates a time of the GPS terminal device passing by the end points of the traffic marking. Then, the moving velocity is computed by using the time as divisor and the unit line as dividend. The navigation method utilizes a GPS terminal device comprising an image capture unit and a timer. The image capture unit captures images and the timer calculates the time.
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