Traffic information providing system,traffic information expression method and device
First Claim
1. A method of representing road-related information characterized by representing road-related information together with gray scale information for displaying attributes of said road-related information in multiple levels.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention provides a traffic information display method which presents traffic information so as to quantatively indicate the reliability and superiority of traffic information. The invention also provides a traffic information providing system which clearly communicates an “unknown” section to the receiving party. The invention represents the state volume of traffic information by the state volume of each sampling point set by segmenting a target road and represents traffic information by using the state volume of traffic information and gray scale information which displays the reliability of the state volume in multiple levels. The user thus understands how reliable the traffic information is and properly evaluates the traffic information. The traffic information may be used to perform a high-accuracy path search and provide traffic information at a reasonable cost. The traffic information providing system of the invention includes traffic information providing apparatus for providing, as traffic information, the state volume of traffic information of each distance quantization unit set by segmenting a target road and mask bit information indicating that the state volume is valid or invalid, and traffic information utilization apparatus for reproducing a valid state volume by using the mask bit information. In the traffic information providing system, the receiving party clearly recognizes, based on the mask bit information, an “unknown” section enclosed by an ellipse:
139 Citations
47 Claims
- 1. A method of representing road-related information characterized by representing road-related information together with gray scale information for displaying attributes of said road-related information in multiple levels.
-
29. Terminal apparatus comprising:
- reception means for receiving gray scale information which displays a state volume of traffic information and attributes of said state volume in multiple levels; and
display means for displaying the state volume of said traffic information in a form corresponding to the value of said gray scale information. - View Dependent Claims (30)
- reception means for receiving gray scale information which displays a state volume of traffic information and attributes of said state volume in multiple levels; and
-
31. Terminal apparatus characterized by comprising:
-
transmission means for transmitting information on a current position and a destination;
reception means for receiving gray scale information for displaying path information and superiority of said path information in multiple levels; and
display means for displaying said path information in a form corresponding to the value of said gray scale information.
-
-
32. Terminal apparatus characterized by comprising:
- reception means for receiving traffic information;
route calculation means for calculating a shortest-travel-time path from a current position to a destination by referencing said traffic information;
attribute information calculation means for displaying superiority of said shortest-travel-time path in multiple levels; and
display means for displaying said shortest-travel-time path in a form corresponding to the value of said gray scale information.
- reception means for receiving traffic information;
-
33. Path information calculation apparatus comprising:
- dynamic link cost calculation means for calculating a dynamic link cost of a link based on a state volume of traffic information;
static link cost provision means for providing a static link cost of said link; and
link cost determination means for changing a distribution ratio of the dynamic link cost and static link cost based on a gray scale information which represents reliability of superiority of traffic information in multiple levels in order to generate a link cost used for path calculation.
- dynamic link cost calculation means for calculating a dynamic link cost of a link based on a state volume of traffic information;
-
34. A traffic information providing system comprising:
- traffic information providing apparatus for retaining, as traffic information, a state volume of traffic information and gray scale information for displaying the reliability of said state volume in multiple levels and providing traffic information to which said gray scale information is appended; and
client apparatus for receiving said traffic information from said traffic information providing apparatus;
characterized in that said traffic information providing apparatus sets a value of traffic information to be provided to said client apparatus in accordance with said gray scale information appended to said traffic information.
- traffic information providing apparatus for retaining, as traffic information, a state volume of traffic information and gray scale information for displaying the reliability of said state volume in multiple levels and providing traffic information to which said gray scale information is appended; and
-
35. A traffic information providing system comprising:
- traffic information providing apparatus for providing, as traffic information, a state volume of traffic information at each of the sampling points set by segmenting a target road and mask bit information indicating that said state volume is valid or invalid; and
traffic information utilization apparatus for receiving said traffic information and reproducing said valid state volume by using said mask bit information. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
- traffic information providing apparatus for providing, as traffic information, a state volume of traffic information at each of the sampling points set by segmenting a target road and mask bit information indicating that said state volume is valid or invalid; and
-
47. A traffic information display method characterized by segmenting a target road of traffic information to set sampling points, setting 1 of mask bit information in association with said sampling point where a valid state volume of traffic information is obtained, setting 0 of mask bit information in association with said sampling point where a valid state volume of traffic information is not obtained, and presenting an array of said mask bit information together with an array of state volumes of said sampling points.
Specification