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:
Jun. 21, 2011
Filed:
Sep. 15, 2008
Kazuhiro Yanase, Tokyo, JP;
Kazuhiro Yanase, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
Disclosed is a road-to-vehicle communication system to provide highly reliable road-to-vehicle communication services by use of a vehicle's car navigation system. The roadmap information for the car navigation system contains information to indicate if an area is a road-to-vehicle communication possible area, and information relating to the communication system of road-to-vehicle communication. When the car navigation system detects that the vehicle approaches the road-to-vehicle communication possible area by a predetermined distance, a vehicle system acquires the communication system of the roadside communication equipment from the roadmap information. And the road-to-vehicle communication equipment is set to the stand-by state of the acquired communication system. When the road-to-vehicle communication equipment receive radio wave from the roadside communication equipment, the road-to-vehicle communication equipment is released from the stand-by state and receives from the roadside communication equipment warning information to prevent the vehicle from possible traffic accident.