METHOD FOR FLEXIBLY ADJUSTING A NAVIGATION PATH AND DEVICE THEREOF
First Claim
1. A method for flexibly adjusting a navigation path, applicable to a navigation device having a map database and a traffic sign database, wherein the map database has a plurality of maps and a plurality of path features corresponding to the maps, the traffic sign database has a plurality of traffic sign messages corresponding to a plurality of traffic sign features respectively, and the method comprises:
- obtaining current position information of a current position and current speed information of current speed;
accessing the map corresponding to the current position information and the path feature corresponding to the map from the map database;
defining a specific scope which has a predetermined distance from the current position;
accessing the corresponding traffic sign messages in the specific scope from the traffic sign database;
planning a plurality of paths according to the current position information, the specific scope and the path features corresponding to the maps;
calculating total travel time of each of the paths according to the current speed information and the traffic sign features corresponding to the traffic sign messages; and
displaying one of the paths with a shortest total travel time.
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Abstract
The present invention is related to a method for flexibly adjusting a navigation path and a device thereof. The method is applied to a navigation device, and the navigation device may obtain current position information and speed information through a satellite positioning module, then access a map corresponding to the current position information from a map database, continuously the navigation device defines a specific scope adjacent to the vehicle thereof and accesses corresponding traffic sign messages as a changing time in the specific scope from a traffic sign database, then plans a plurality of paths, and respectively calculates the total travel time of each path according to the current speed information and sign features corresponding to traffic signs so as to choose a path with a shortest total travel time as a best navigation path and avoid a path with traffic lights or railroad crossing lights.
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Citations
10 Claims
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1. A method for flexibly adjusting a navigation path, applicable to a navigation device having a map database and a traffic sign database, wherein the map database has a plurality of maps and a plurality of path features corresponding to the maps, the traffic sign database has a plurality of traffic sign messages corresponding to a plurality of traffic sign features respectively, and the method comprises:
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obtaining current position information of a current position and current speed information of current speed; accessing the map corresponding to the current position information and the path feature corresponding to the map from the map database; defining a specific scope which has a predetermined distance from the current position; accessing the corresponding traffic sign messages in the specific scope from the traffic sign database; planning a plurality of paths according to the current position information, the specific scope and the path features corresponding to the maps; calculating total travel time of each of the paths according to the current speed information and the traffic sign features corresponding to the traffic sign messages; and displaying one of the paths with a shortest total travel time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A navigation device comprising:
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a satellite positioning module, configured to obtain current position information of a current position and current speed information of current speed; a storing unit, configured to store a map database and a traffic sign database, the map database having a plurality of maps and a plurality of path features corresponding to the maps, the traffic sign database having a plurality of traffic sign messages corresponding to a plurality of traffic sign features respectively; a processing unit, connecting with the satellite positioning module and the storing unit respectively, configured to define a specific scope which has a predetermined distance from the current position, configured to access the corresponding traffic sign messages in the specific scope from the traffic sign database, configured to plan a plurality of paths according to the current position information, the specific scope and the path features corresponding to the maps, and configured to calculate total travel time of each of the paths according to the current speed information and the traffic sign features corresponding to the traffic sign messages; and a display unit, connecting with the processing unit, configured to display a path with a shortest total travel time from the paths. - View Dependent Claims (8, 9, 10)
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Specification