Method for transmitting location information on a digital map, apparatus for implementing the method and traffic information provision/reception system
First Claim
1. A system for identifying a road segment in digital maps, each map containing errors inherent in the reduced-scaling of the digital maps and/or depending on the kind of the digital maps, the digital maps including a first digital map and a second digital map, the first digital map being stored in a transmitting apparatus, the second digital map being stored in a receiving apparatus, the second digital map containing a different error from the first digital map, the system comprising:
- the transmitting apparatus that transmits the location information including a list of coordinates of points which indicates a road shape of a road segment on the first digital map; and
the receiving apparatus that receives the location information from the transmitting apparatus and identifies the road segment on the second digital map by matching a road shape specified by the received location information with a road shape on the second digital map.
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Accused Products
Abstract
Location information transmission apparatus for exchanging information about the on-road location on a digital map, characterized in that apparatus at an information provider comprises a location information converter for converting transmit on-road location information to road shape data including the on-road location consisting of a string of coordinates representing the road shape of a road section having a length that depends on the situation and relative data indicating the on-road location in the road section, and that apparatus at a party receiving the on-road location information comprises a shape matching section for performing shape matching by using the road shape data, identifying the road section on a digital map and identifying the on-road location in the road section by using the relative data. This makes it possible to correctly exchange information about the location on a digital map without defining node numbers or link numbers on a road network.
181 Citations
5 Claims
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1. A system for identifying a road segment in digital maps, each map containing errors inherent in the reduced-scaling of the digital maps and/or depending on the kind of the digital maps, the digital maps including a first digital map and a second digital map, the first digital map being stored in a transmitting apparatus, the second digital map being stored in a receiving apparatus, the second digital map containing a different error from the first digital map, the system comprising:
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the transmitting apparatus that transmits the location information including a list of coordinates of points which indicates a road shape of a road segment on the first digital map; and the receiving apparatus that receives the location information from the transmitting apparatus and identifies the road segment on the second digital map by matching a road shape specified by the received location information with a road shape on the second digital map. - View Dependent Claims (2, 3, 4)
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5. A method for identifying a road segment in digital maps, each map containing errors inherent in the reduced-scaling of the digital maps and/or depending on the kind of the digital maps, the digital maps including a first digital map and a second digital map, the first digital map being stored in a transmitting apparatus, the second digital map being stored in a receiving apparatus, the second digital map containing a different error from the first digital map, the method comprising:
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transmitting, by the transmitting apparatus, the location information including a list of coordinates of points which indicates a road shape of a road segment on the first digital map; receiving, by the receiving apparatus, the location information from said transmitting apparatus; and identifying the road segment on the second digital map by matching a road shape specified by the received location information with a road shape on the second digital map.
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Specification