GLOBAL POSITIONING SYSTEM TERMINAL DEVICE AND NAVIGATION METHOD THEREOF
First Claim
1. A global positioning system (GPS) terminal device, for providing a navigation display when the GPS terminal device is moving along a road with a traffic marking marked thereon and when GPS information is not available, the GPS terminal device comprising:
- a storage unit, storing at least one map information;
an image capture unit, capturing a plurality of images comprising the road with the traffic marking on the GPS terminal device moving along the road;
a timer, calculating a time of the GPS terminal device passing by the traffic marking; and
a processing module, electrically connecting with the storage unit, the image capture unit, and the timer to compute a moving velocity according to the images comprising the road and the time and to render the navigation display according to the map information and the moving velocity.
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Accused Products
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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Citations
14 Claims
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1. A global positioning system (GPS) terminal device, for providing a navigation display when the GPS terminal device is moving along a road with a traffic marking marked thereon and when GPS information is not available, the GPS terminal device comprising:
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a storage unit, storing at least one map information; an image capture unit, capturing a plurality of images comprising the road with the traffic marking on the GPS terminal device moving along the road; a timer, calculating a time of the GPS terminal device passing by the traffic marking; and a processing module, electrically connecting with the storage unit, the image capture unit, and the timer to compute a moving velocity according to the images comprising the road and the time and to render the navigation display according to the map information and the moving velocity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A navigation method for providing 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 comprising the following steps of:
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(a) storing at least one map information; (b) capturing a plurality of images comprising the road with the traffic marking on the GPS terminal device moving along the road with the traffic marking; (c) calculating a time of the GPS terminal device passing by an unit line of the traffic marking; (d) computing a moving velocity according to the time and the unit line on the images; and (e) generating the navigation display according to the map information and the moving velocity. - View Dependent Claims (11, 12, 13, 14)
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Specification