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. 20, 2014
Filed:
Jul. 17, 2013
Zenrin Co., Ltd., Kitakyushu, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Aisin Aw Co., Ltd., Anjo, JP;
Hiroyuki Tashiro, Kitakyushu, JP;
Yukiko Katsuki, Kitakyushu, JP;
Naoki Ushijima, Kitakyushu, JP;
Motohiro Nakamura, Toyota, JP;
Kazunori Watanabe, Toyota, JP;
Sadahiro Koshiba, Okazaki, JP;
Kazuteru Maekawa, Okazaki, JP;
Zenrin Co., Ltd., Kitakyushu-shi, Fukuoka, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Aisin AW Co., Ltd., Anjo-shi, Aichi, JP;
Abstract
A road network analysis system detects major changes in a road network based on probe information from a plurality of vehicles. The probe information is tabulated and the change in the amount of traffic is calculated for each road with a predetermined time interval. If a remarkable change in the amount of traffic is detected for a road before and after a specific baseline day, it is determined that a major change in the road network affecting the traffic has occurred in the vicinity of the road, and the road is specified as a change-related road. A path search may be performed between the endpoints of a plurality of change-related roads, and the searched paths that have the most overlap with the searched paths are selected so as to identify the change-related roads which are commonly affected by the same cause and the endpoints thereof.