Drive assist apparatus, method, and recording medium
First Claim
1. A drive assist apparatus comprising:
- a road-information storage unit to store road information including positions of intersections on a road;
a traffic-signal information storage unit to store information regarding a presence/absence of a signal light at each of the intersections and information regarding change timing of a traffic signal of the signal light;
a receiving unit to receive other-vehicle information including information regarding a position and a speed of an other vehicle traveling ahead of a host vehicle;
an obtaining unit to obtain host-vehicle information including a speed of the host vehicle;
a determining unit to determine whether the other vehicle becomes an obstacle to travel of the host vehicle, by comparing the other-vehicle information and the host-vehicle information; and
a calculating unit to calculate a recommended speed on a basis of the host-vehicle information, the road information, and information regarding the traffic-signal change timing when the determining unit determines that the other vehicle does not become an obstacle to the travel of the host vehicle, and that calculates the recommended speed on a basis of the host-vehicle information, the road information, the information regarding the traffic-signal change timing, and an arrival delay time for avoiding an obstacle caused by the other vehicle when the determining unit determines that the other vehicle becomes the obstacle to the travel of the host vehicle.
1 Assignment
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Accused Products
Abstract
A drive assist apparatus includes: a road-information storage unit storing road information; a traffic-signal information storage unit to store information regarding a traffic-signal change timing; a receiving unit to receive other-vehicle information; an obtaining unit to obtain host-vehicle information; a determining unit to determine whether the other vehicle becomes an obstacle to the host vehicle; and a calculating unit to calculate a recommended speed based on the host-vehicle information, the road information, and information regarding the traffic-signal change timing, when the other vehicle is determined to not become an obstacle to the host vehicle, and calculate the recommended speed based on the host-vehicle information, the road information, the information regarding the traffic-signal change timing, and an arrival delay time for avoiding an obstacle caused by the other vehicle, when the other vehicle is determined to become the obstacle to the host vehicle.
7 Citations
15 Claims
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1. A drive assist apparatus comprising:
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a road-information storage unit to store road information including positions of intersections on a road; a traffic-signal information storage unit to store information regarding a presence/absence of a signal light at each of the intersections and information regarding change timing of a traffic signal of the signal light; a receiving unit to receive other-vehicle information including information regarding a position and a speed of an other vehicle traveling ahead of a host vehicle; an obtaining unit to obtain host-vehicle information including a speed of the host vehicle; a determining unit to determine whether the other vehicle becomes an obstacle to travel of the host vehicle, by comparing the other-vehicle information and the host-vehicle information; and a calculating unit to calculate a recommended speed on a basis of the host-vehicle information, the road information, and information regarding the traffic-signal change timing when the determining unit determines that the other vehicle does not become an obstacle to the travel of the host vehicle, and that calculates the recommended speed on a basis of the host-vehicle information, the road information, the information regarding the traffic-signal change timing, and an arrival delay time for avoiding an obstacle caused by the other vehicle when the determining unit determines that the other vehicle becomes the obstacle to the travel of the host vehicle. - View Dependent Claims (2, 3, 4, 5)
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6. A non-transitory computer-readable medium for recording a program allowing a computer to execute:
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receiving other-vehicle information including information regarding a position and a speed of an other vehicle traveling ahead of a host vehicle; obtaining host-vehicle information including a speed of the host vehicle; determining whether the other vehicle becomes an obstacle to travel of the host vehicle, by comparing the other-vehicle information and the host-vehicle information; calculating a recommended speed on a basis of the host-vehicle information, road information including a distance between intersections, and information regarding change timing of a traffic signals at the intersection, when it is determined that the other vehicle does not become an obstacle to the travel of the host vehicle, and calculating the recommended speed on a basis of the host-vehicle information, the road information, the information regarding the change timing at the traffic signals, and an arrival delay time for avoiding an obstacle caused by the other vehicle, when it is determined that the other vehicle becomes the obstacle to the travel of the host vehicle; and outputting the recommended speed calculated by the calculating. - View Dependent Claims (7, 8, 9, 10)
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11. A method of drive assist, the method comprising:
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receiving vehicle information from each of a first vehicle and a second vehicle, the vehicle information including a vehicle speed; determining whether the first vehicle becomes an obstacle to travel of the second vehicle, by comparing the vehicle information of the first vehicle and the vehicle information of the second vehicle; calculating a recommended speed for the second vehicle on a basis of the vehicle information of the second vehicle, road information including a distance between intersections, and information regarding change timing of a traffic signal at each intersection, when it is determined that the first vehicle does not become an obstacle to the travel of the host vehicle, and calculating the recommended speed on a basis of the vehicle information of the second vehicle, the road information, the information regarding the change timing of the traffic signal, and an arrival delay time for avoiding an obstacle caused by the first vehicle, when it is determined that the first vehicle becomes the obstacle to the travel of the second vehicle; and transmitting the recommended speed calculated by the calculating to the second vehicle. - View Dependent Claims (12, 13, 14, 15)
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Specification