Communications: electrical – External condition vehicle-mounted indicator or alarm – Highway information
Reexamination Certificate
2011-06-21
2011-06-21
Previl, Daniel (Department: 2612)
Communications: electrical
External condition vehicle-mounted indicator or alarm
Highway information
C340S995260, C340S435000
Reexamination Certificate
active
07965198
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.
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NEC Corporation
Previl Daniel
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