Patent ID: 7672777
Filing Date: 2010-03-02
Classification: G01C,G09B

Abstract:
1. A moving history conversion apparatus which converts a representation format of moving history of a mobile object, said apparatus comprising: a first map information accumulation unit operable to accumulate first map information which represents a map using a series of first-type IDs for identifying geographical positions; a first moving history accumulation unit operable to accumulate first moving history to which time information indicating a time when the mobile object has passed through a point that is associated with the first-type ID is attached and which is represented as the series of first-type IDs included in the first map information accumulated in said first map information accumulation unit, the series of first-type IDs representing a starting point, a route, and a destination of the mobile object; a second map information accumulation unit operable to accumulate second map information which represents a map using a series of second-type IDs for identifying geographical positions; a second moving history accumulation unit operable to accumulate second moving history represented as the series of second-type IDs included in the second map information accumulated in said second map information accumulation unit; and a conversion unit operable to convert the series of first-type IDs included in the first moving history accumulated in said first moving history accumulation unit into the series of second-type IDs included in the second map information accumulated in said second map information accumulation unit, and to accumulate the series of second-type IDs obtained through the conversion into said second moving history accumulation unit as the second moving history to which the time information indicating the time when the mobile object passed through the point that is associated with the first-type ID is attached, and as the series of second-type IDs representing the starting point, the route, and the destination of the mobile object, wherein each first-type ID is for identifying a respective point in the first map information, the first map information includes a plurality of latitude and longitude information records indicating a latitude and a longitude of each point of the respective first-type IDs, each second-type ID is for identifying a respective point in the second map information, the second map information includes a plurality of latitude and longitude information records indicating a latitude and a longitude of each point of the respective second-type IDs, said conversion unit is operable to perform the conversion by replacing the first-type IDs with the second-type IDs which identify a point same or close in latitude and longitude to a point identified by the first-type ID, with reference to latitude and longitude information included in the first map information and the second map information, said conversion unit is operable to convert the series of first-type IDs included in the first map history into the plurality of latitude and longitude information records, with reference to the latitude and longitude information included in the first map information, and to replace the series of latitude and longitude information records obtained through the conversion with the series of second-type series IDs, based on the second-type IDs included in the second map information and the latitude and longitude information associated with the first-type IDs, and said conversion unit is operable to interpolate the time information by estimating the passage time at a latitude and longitude different from the latitude and longitude indicated by the plurality of latitude and longitude information records, based on the plurality of latitude and longitude information records converted from the series of first-type IDs and the time information which are included in the first moving history, and to replace the plurality of latitude and longitude information records with the series of second-type IDs, based on the interpolated time information.