The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2013
Filed:
Mar. 25, 2008
Kouji Kida, Tokyo, JP;
Kenichiro Fujiyama, Tokyo, JP;
Kouji Kida, Tokyo, JP;
Kenichiro Fujiyama, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
Provided is a general-purpose map matching system enabling high-speed map matching while maintaining a precision of an analysis based on a map matching result even when event data is transmitted from numerous vehicles. The grid road generation unitgenerates each grid obtained by the division of a region in which a road network exists into a latitude direction and a longitude direction by equal spaces based on data stored in the road network storage unit. Then, combine grids whose sets of roads passing are the same. The event grid matching unit correlates event data collected from a vehicle and a grid. When the number of pieces of event data correlated with the grid is large, the event processing priority determination unit selects a part of the data. The event road matching unit correlates the selected event data and a road in the grid.