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:
Apr. 08, 2008
Filed:
Sep. 02, 2004
Kenichiro Yamane, Hitachi, JP;
Junsuke Fujiwara, Hitachi, JP;
Yoshinori Endo, Mito, JP;
Kimiyoshi Machii, Hitachi, JP;
Masatoshi Kumagai, Hitachi, JP;
Takayoshi Yokota, Hitachiota, JP;
Shigeru Matsuo, Hitachinaka, JP;
Kenichiro Yamane, Hitachi, JP;
Junsuke Fujiwara, Hitachi, JP;
Yoshinori Endo, Mito, JP;
Kimiyoshi Machii, Hitachi, JP;
Masatoshi Kumagai, Hitachi, JP;
Takayoshi Yokota, Hitachiota, JP;
Shigeru Matsuo, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A traffic information providing system externally acquires traffic information including information relating to the travel time of a link, calculates a travel time for a non-provision link to which no travel time is provided through estimate/complement operation. The estimate/complement operation is carried out with use of travel times, emergencies, travel times of links in the vicinity of the non-provision link, and so on, obtained in the near past. The system stores and statistically processes the externally-acquired traffic information, and also estimates a travel time in the near future. When there is an abnormality in the acquired traffic information, the system deletes the abnormality, regards the information as a non-provision link, calculates a probability distribution of travel times of links, calculates a probability distribution of travel times of the entire route made up of a plurality of links, and also calculates a probability for a specific travel time range.