TERMINAL DEVICE AND METHOD FOR TERMINAL DEVICE
First Claim
1. A terminal device mounted on a first vehicle, the terminal device comprising:
- one or more memories; and
circuitry which, in operation, performs operations including;
obtaining first position information indicating a position of the first vehicle;
receiving second position information indicating a position of a second vehicle which is different from the first vehicle;
deriving a first time period required for the first vehicle to reach a point of encounter at least from the first position information, the point of encounter being a point at which the first vehicle and the second vehicle are expected to encounter each other;
deriving a second time period required for the second vehicle to reach the point of encounter at least from the second position information;
issuing an alert if a relationship between the first time period and the second time period satisfies assistance triggering conditions;
when the first position information additionally includes information on a vehicle length of the first vehicle, calculating a third time period required for a rear position on the first vehicle to reach the point of encounter, the rear position on the first vehicle being a position shifted backward from a position indicated by the first position information in accordance with the vehicle length of the first vehicle;
when the second position information additionally includes information on a vehicle length of the second vehicle, calculating a fourth time period required for a rear position on the second vehicle to reach the point of encounter, the rear position on the second vehicle being a position shifted backward from a position indicated by the second position information in accordance with the vehicle length of the second vehicle; and
when the relationship between the first time period and the second time period does not satisfy the assistance triggering conditions, issuing an alert if a relationship between the second time period and the third time period satisfies the assistance triggering conditions or if a relationship between the first time period and the fourth time period satisfies the assistance triggering conditions.
1 Assignment
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Accused Products
Abstract
Either first or second position information additionally includes vehicle length. A derivation unit on a vehicle derives a first time taken for the vehicle to reach a point of encounter based on the first position information and a second time taken for another vehicle to reach the point of encounter based on the second position information. The derivation unit also derives a third time taken for the position of third position information, determined by shifting one of the first and second position information in accordance with vehicle length, to reach the point of encounter. A notification unit issues an alert if the relationship between the first and second times satisfies assistance triggering conditions. Even when they are not satisfied, it issues an alert if the relationship between a time derived based on the other one of the first and second position information and the third time satisfies assistance triggering conditions.
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Citations
7 Claims
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1. A terminal device mounted on a first vehicle, the terminal device comprising:
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one or more memories; and circuitry which, in operation, performs operations including; obtaining first position information indicating a position of the first vehicle; receiving second position information indicating a position of a second vehicle which is different from the first vehicle; deriving a first time period required for the first vehicle to reach a point of encounter at least from the first position information, the point of encounter being a point at which the first vehicle and the second vehicle are expected to encounter each other; deriving a second time period required for the second vehicle to reach the point of encounter at least from the second position information; issuing an alert if a relationship between the first time period and the second time period satisfies assistance triggering conditions; when the first position information additionally includes information on a vehicle length of the first vehicle, calculating a third time period required for a rear position on the first vehicle to reach the point of encounter, the rear position on the first vehicle being a position shifted backward from a position indicated by the first position information in accordance with the vehicle length of the first vehicle; when the second position information additionally includes information on a vehicle length of the second vehicle, calculating a fourth time period required for a rear position on the second vehicle to reach the point of encounter, the rear position on the second vehicle being a position shifted backward from a position indicated by the second position information in accordance with the vehicle length of the second vehicle; and when the relationship between the first time period and the second time period does not satisfy the assistance triggering conditions, issuing an alert if a relationship between the second time period and the third time period satisfies the assistance triggering conditions or if a relationship between the first time period and the fourth time period satisfies the assistance triggering conditions. - View Dependent Claims (2, 3, 4)
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5. A method for a terminal device mounted on a first vehicle, the method comprising:
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obtaining first position information indicating a position of a first vehicle; receiving second position information indicating a position of a second vehicle which is different from the first vehicle; deriving a first time period required for the first vehicle to reach a point of encounter at least from the first position information, the point of encounter being a point at which the first vehicle and the second vehicle are expected to encounter each other; deriving a second time period required for the second vehicle to reach the point of encounter at least from the second position information; issuing an alert if a relationship between the first time period and the second time period satisfies assistance triggering conditions; when the first position information additionally includes information on a vehicle length of the first vehicle, calculating a third time period required for a rear position on the first vehicle to reach the point of encounter, the rear position on the first vehicle being a position shifted backward from a position indicated by the first position information in accordance with the vehicle length of the first vehicle; when the second position information additionally includes information on a vehicle length of the second vehicle, calculating a fourth time period required for a rear position on the second vehicle to reach the point of encounter, the rear position on the second vehicle being a position shifted backward from a position indicated by the second position information in accordance with the vehicle length of the second vehicle; and when the relationship between the first time period and the second time period does not satisfy the assistance triggering conditions, issuing an alert if a relationship between the second time period and the third time period satisfies the assistance triggering conditions or if a relationship between the first time period and the fourth time period satisfies the assistance triggering conditions. - View Dependent Claims (6)
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7. A terminal device mounted on a first vehicle, the terminal device comprising:
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one or more memories, and circuitry which, in operation, performs operations including; obtaining position information indicating a position of a vehicle; obtaining information on a first vehicle length of the vehicle; obtaining information on a second vehicle length of a towed vehicle being towed by the vehicle; when information on the vehicle length of the towed vehicle has been obtained, generating a packet signal that includes the position information and information on a third vehicle length, the third vehicle length being determined by adding the first vehicle length and the second vehicle length; and transmitting the packet signal to outside the terminal device.
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Specification