SYSTEM AND METHOD FOR AUTOMATED UPDATING OF MAP INFORMATION
First Claim
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1. A system for automatically updating a map database, comprising:
- an input subsystem providing vehicle readings, each vehicle reading corresponding to a vehicle and comprising a location of the vehicle;
a map database comprising information associated with roads;
an information inference module for deriving additional traffic-independent information not already stored within the map database and updating the map database to reflect the derived additional information.
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Abstract
Traffic information readings corresponding to a vehicle are received, the readings including at least a location. The traffic information readings are compared to information already within a map database, and are used to derive additional map information augmenting or correcting that already within the database, the additional map information subsequently being stored in the database. Additional information that is derived includes the presence of stop signs and traffic lights at intersections, the legality of turns at certain times of day, and the connectedness or non-connectedness of road segments.
196 Citations
24 Claims
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1. A system for automatically updating a map database, comprising:
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an input subsystem providing vehicle readings, each vehicle reading corresponding to a vehicle and comprising a location of the vehicle; a map database comprising information associated with roads; an information inference module for deriving additional traffic-independent information not already stored within the map database and updating the map database to reflect the derived additional information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for automatically updating a map database, comprising:
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receiving map information from the map database, the map database comprising information associated with roads; receiving vehicle readings, each vehicle reading corresponding to a vehicle and comprising a location of the vehicle; deriving additional traffic-independent information not already stored within the map database; and updating the map database to reflect the derived additional information. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer readable storage medium storing a computer program executable by a processor for automatically updating a map database, the actions of the computer program comprising:
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receiving map information from the map database, the map database comprising information associated with roads; receiving vehicle readings, each vehicle reading corresponding to a vehicle and comprising a location of the vehicle; deriving additional traffic-independent information not already stored within the map database; and updating the map database to reflect the derived additional information. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification