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:
May. 19, 2009
Filed:
Feb. 17, 2006
Masatoshi Kumagai, Hitachi, JP;
Takumi Fushiki, Paris, FR;
Takayoshi Yokota, Hitachioota, JP;
Kazuya Kimita, Hitachi, JP;
Masatoshi Kumagai, Hitachi, JP;
Takumi Fushiki, Paris, FR;
Takayoshi Yokota, Hitachioota, JP;
Kazuya Kimita, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A traffic information system includes: a past information database for storing past information, which is collected for road links in a predetermined area, of a past mobile object on a road; a current information database for storing running information, which is collected for the road links in the predetermined area, of a current mobile object; link correlation analyzing means in which correlations of traffic information among each road link in the predetermined area are calculated from the past information stored in the past information database, and output as link correlation information among the road links; combination calculating means for calculating weighting information for obtaining the current information as a sum of the link correlation information; and traffic information estimating means for calculating estimated traffic information for a link where the current information is not collected based on the link correlation information and the weighting information.