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. 23, 2013
Filed:
Mar. 11, 2008
Hiroki Ishikawa, Anjo, JP;
Junichiro Igawa, Okazaki, JP;
Hiroki Ishikawa, Anjo, JP;
Junichiro Igawa, Okazaki, JP;
Aisin AW Co., Ltd., Anjo, JP;
Abstract
Systems, methods, and programs obtain probe information, the probe information comprising an average speed of probe cars traveling on each of a plurality of links in a predetermined area. The systems, methods, and programs detect, for each of the plurality of links, a first degree of a traffic jam corresponding to the link for each of a plurality of different thresholds by comparing the average speed with each of the thresholds. The systems, methods, and programs obtain traffic-jam information concerning the plurality of links, the obtained traffic information comprising a second degree of the traffic jam corresponding to each of the plurality of links. The systems, methods, and programs compare, for each of the plurality of links, the second degree of the traffic jam with the first degree of the traffic jam for each of the thresholds. The systems, methods, and programs select, for the predetermined area, a threshold from the plurality of thresholds for which the first degree of the traffic jam most matches the second degree of the traffic jam and utilize the selected threshold to determine a severity of the traffic jam for each of the plurality of links.