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. 28, 2015
Filed:
Nov. 02, 2010
Yoshiaki Tsuda, Tokyo, JP;
Yoshiaki Tsuda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Traffic information is provided to an in-vehicle unit of a vehicle located in a shadow portion of a large-sized vehicle and to an in-vehicle unit of a vehicle at a location separated from an intersection. A UHF beacon unitis installed at the intersection, thereby distributing the traffic information using a UHF beacon signal having a diffraction characteristic. This arrangement can allow the in-vehicle unit of the vehicle located in the shadow portion of the large-sized vehicle as well to receive the traffic information. Further, since the UHF signal propagates far, this arrangement can allow the in-vehicle unit of the vehicle at the location separated from the intersectionas well to receive the traffic information. The UHF beacon unittransmits, to a plurality of concentric zones, UHF beacon signals with different traffic information set therein for the different zones, by time division. At this time, the UHF beacon unittransmits the UHF beacon signals with the different traffic information set therein, with different transmission output powers.