Vehicle-to-vehicle communication apparatus, vehicle-to-vehicle communication system, and method of determining applicability of moving image information to an application program
First Claim
Patent Images
1. A vehicle-to-vehicle communication apparatus comprising:
- a wireless communication unit configured to wirelessly transmit and receive moving image information;
a time delay acquisition unit configured to acquire predicted delay time information representing an estimated length of time required to transmit the moving image information from one vehicle to another vehicle via a vehicle-to-vehicle transmission performed by the wireless communication unit;
an allowable delay table memory in which there is stored table information indicating an allowable delay time determined for at least one application program which uses the moving image information, the allowable delay time representing an allowable length of time required to transmit the moving image information from one vehicle to another vehicle; and
an applicability determination unit configured to determine the applicability of the moving image information to the at least one application program based on whether the predicted delay time information representing an estimated length of time required to transmit the moving image information from one vehicle to another vehicle acquired by the time delay acquisition unit is less than or equal to the allowable delay time stored in the allowable delay table memory.
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Abstract
In a vehicle-to-vehicle communication system, when moving image information is transmitted between vehicles, a delay time acquisition unit determines a delay time that occurs when the moving image information is transmitted from a first vehicle to a second vehicle, and an applicability determination unit determines whether the moving image information transmitted with such a delay time is applicable to an application program running on an in-vehicle apparatus installed in the second vehicle. This makes it possible to transmit only moving image information which is usable by the in-vehicle apparatus.
149 Citations
9 Claims
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1. A vehicle-to-vehicle communication apparatus comprising:
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a wireless communication unit configured to wirelessly transmit and receive moving image information; a time delay acquisition unit configured to acquire predicted delay time information representing an estimated length of time required to transmit the moving image information from one vehicle to another vehicle via a vehicle-to-vehicle transmission performed by the wireless communication unit; an allowable delay table memory in which there is stored table information indicating an allowable delay time determined for at least one application program which uses the moving image information, the allowable delay time representing an allowable length of time required to transmit the moving image information from one vehicle to another vehicle; and an applicability determination unit configured to determine the applicability of the moving image information to the at least one application program based on whether the predicted delay time information representing an estimated length of time required to transmit the moving image information from one vehicle to another vehicle acquired by the time delay acquisition unit is less than or equal to the allowable delay time stored in the allowable delay table memory. - View Dependent Claims (2)
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3. A vehicle-to-vehicle communication system for wirelessly transmitting and receiving moving image information between a first vehicle-to-vehicle communication apparatus installed in a first vehicle and a second vehicle-to-vehicle communication apparatus installed in a second vehicle,
the first vehicle-to-vehicle communication apparatus including: -
a time delay acquisition unit configured to acquire predicted delay time information representing an estimated length of time required to transmit the moving image information from the first vehicle to the second vehicle; and a wireless transmission unit configured to wirelessly transmit the predicted delay time information acquired by the time delay acquisition unit and the moving image information to the second vehicle-to-vehicle communication apparatus, the second vehicle-to-vehicle communication apparatus including; a wireless reception unit configured to receive the moving image information and the predicted delay time information transmitted from the wireless transmission unit; an allowable delay table memory in which there is stored table information indicating an allowable delay time determined for at least one application program which uses the moving image information, the allowable delay time representing an allowable length of time required to transmit the moving image information from one vehicle to another vehicle; and an applicability determination unit configured to determine the applicability of the moving image information received by the wireless reception unit to the at least one application program, based on whether the predicted delay time information representing an estimated length of time required to transmit the moving image information from the first vehicle to the second vehicle received by the wireless reception unit is less than or equal to the allowable delay time stored in the allowable delay table memory. - View Dependent Claims (4, 5, 6)
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7. A method of determining the applicability of moving image information to an application program, comprising:
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a first step in which a time delay acquisition unit included in a first vehicle-to-vehicle communication apparatus installed in a first vehicle acquires predicted delay time information indicating an estimated length of delay time required to transmit the moving image information from the first vehicle to a second vehicle; a second step in which a wireless transmission unit included in the first vehicle-to-vehicle communication apparatus transmits the moving image information together with the predicted delay time information acquired in the first step to a second vehicle-to-vehicle communication apparatus installed in the second vehicle; a third step in which a wireless reception unit included in the second vehicle-to-vehicle communication apparatus receives the moving image information and the predicted delay time information transmitted in the second step; and a fourth step in which an applicability determination unit included in the second vehicle-to-vehicle communication apparatus determines the applicability of the moving image information received in the third step to the application program based on whether the predicted delay time information representing an estimated length of time required to transmit the moving image information from the first vehicle to the second vehicle received in the third step is less than or equal to an allowable delay time determined for an application program which uses the moving image information, the allowable delay time representing an allowable length of time required to transmit the moving image information from the first vehicle to the second vehicle.
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8. A method of determining the applicability of moving image information to an application program, comprising:
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a first step in which a time delay acquisition unit included in a first vehicle-to-vehicle communication apparatus installed in a first vehicle acquires predicted delay time information indicating an estimated length of time required to transmit the moving image information from the first vehicle to a second vehicle; a second step in which a wireless transmission unit included in the first vehicle-to-vehicle communication apparatus transmits the predicted delay time information acquired in the first step to a second vehicle-to-vehicle communication apparatus installed in the second vehicle; a third step in which a wireless reception unit included in the second vehicle-to-vehicle communication apparatus receives the predicted delay time information transmitted in the second step; a fourth step in which an applicability determination unit included in the second vehicle-to-vehicle communication apparatus determines the applicability of moving image information, which will be transmitted from the first vehicle-to-vehicle communication apparatus, to the application program based on whether the predicted delay time information received in the third step is less than or equal to an allowable delay time determined for an application program which uses the moving image information; a fifth step in which, when the determination in the fourth step is that the moving image information is applicable to the application program, a request transmission unit included in the second vehicle-to-vehicle communication apparatus transmits a request for transmission of the moving image information to the first vehicle-to-vehicle communication apparatus; a sixth step in which a request reception unit included in the first vehicle-to-vehicle communication apparatus receives the request for transmission of the moving image information transmitted in the fifth step; and a seventh step in which when the request for transmission of the moving image information is received in the sixth step, the wireless transmission unit included in the first vehicle-to-vehicle communication apparatus transmits the moving image information to the second vehicle-to-vehicle communication apparatus. - View Dependent Claims (9)
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Specification