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Vehicle-use signal information processing device and vehicle-use signal information processing method, as well as driving assistance device and driving assistance method

  • US 9,262,918 B2
  • Filed: 05/13/2011
  • Issued: 02/16/2016
  • Est. Priority Date: 05/13/2011
  • Status: Active Grant
First Claim
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1. A signal information processing device for a vehicle that processes signal information containing information on a state of a traffic light, the signal information processing device comprising:

  • a signal information estimating section circuitry which obtains signal information corresponding to a first traffic light, also obtains information on a relationship between a case in which a traffic of a vehicle is prompted and a case in which the traffic is inhibited as a driving environment for a vehicle corresponding to a second traffic light that is installed at a different location from the first traffic light, and estimates an instruction period at which the second traffic light instructs the vehicle to move forward or to stop as signal information on the second traffic light through a calculation based on the signal information corresponding to the first traffic light and the obtained information on the driving environment for the vehicle, wherein the second traffic light is installed at an intersection, andthe signal information estimating section circuitry estimates the signal information on the second traffic light through a calculation based on the signal information corresponding to the first traffic light and information on a driving environment at the intersection,wherein the signal information estimating section circuitry is configured to obtain information of the driving environment corresponding the second traffic light as at least one of information on a number of traffic lanes of each of a plurality of roads intersecting with each other at the intersection and information on traffic amount of each of the plurality of roads intersecting with each other at the intersection,wherein the signal information estimating section circuitry is configured to estimate the instruction period based on the information corresponding to the traffic amount such that the instruction period of the second traffic light instructing the vehicle to move forward is longer than that of a traffic light, that is different from the second traffic light, instructing the vehicle to move forward on the intersecting road in a case of which the traffic amount of the road on which the second traffic light instructing the vehicle to move forward is larger than that of the intersecting road,wherein the signal information estimating section circuitry is configured to estimate the instruction period based on the information corresponding to the number of traffic lanes such that the instruction period of the second traffic light instructing the vehicle to move forward is longer than that of the traffic light, that is different from the second traffic light, instructing the vehicle to move forward on the intersecting road in a case of which the number of traffic lanes of the road on which the second traffic light instructing the vehicle to move forward is larger than that of the intersecting road.

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