Abstract: A vehicle communication processor includes a communication control unit that receives digitally signed information from an external device, and a first control processing unit and a second control processing unit that process information received by the communication control unit. The communication control unit or the first control processing unit includes a sign verification section that performs an authenticity verification of a digital sign of the digitally signed information. The second control processing unit includes an execution preparation section and an execution determination section. The execution preparation section performs an execution preparation process on data of the digitally signed information in parallel to the authenticity verification on the digital sign. The execution determination section determines whether the data of the digitally signed information is to be executed in a case where the digital sign of the digitally signed information is verified as being authentic.

Abstract: A vehicle communication processor includes a communication control unit that receives digitally signed information from an external device, and a first control processing unit and a second control processing unit that process information received by the communication control unit. The communication control unit or the first control processing unit includes a sign verification section that performs an authenticity verification of a digital sign of the digitally signed information. The second control processing unit includes an execution preparation section and an execution determination section. The execution preparation section performs an execution preparation process on data of the digitally signed information in parallel to the authenticity verification on the digital sign. The execution determination section determines whether the data of the digitally signed information is to be executed in a case where the digital sign of the digitally signed information is verified as being authentic.

Abstract: A vehicle detection information sharing system includes a detection information acquiring unit, a vehicle information acquiring unit, a risk degree calculator, and an information transmitter. The detection information acquiring unit is configured to acquire detection information on an obstacle detected by a first vehicle traveling on a road. The vehicle information acquiring unit is configured to acquire vehicle information on a second vehicle traveling on the road. The risk degree calculator is configured to calculate a risk degree on the basis of the detection information and the vehicle information. The risk degree is a degree of risk that arises between the second vehicle and the obstacle. The information transmitter is configured to transmit, to the second vehicle, risk avoidance information corresponding to the risk degree.

Abstract: An external communication system for a vehicle includes communication devices and a controller. The communication devices are provided in the vehicle. The communication devices are configured to transmit and receive communication data between a server device and the vehicle via mutually different communication paths. The controller is configured to control communication by the communication devices. The communication devices include a first communication device and an inter-vehicle communication device. When the inter-vehicle communication device is requested, from another vehicle, to acquire communication data between the another vehicle and the server device, the controller transmits communication data received by the first communication device from the server device, from the inter-vehicle communication device to the another vehicle, and transmits communication data received by the inter-vehicle communication device from the another vehicle, from the first communication device to the server device.

Abstract: An external communication system for a vehicle includes multiple communication devices and a controller. The multiple communication devices are provided in the vehicle. The communication devices transmit and receive communication data between a server device and the vehicle via mutually different communication paths. The controller is control communication by the multiple communication devices. The controller sets at least one of the multiple communication devices as a main communication device that transmits and receives the communication data between the server device and the vehicle. The controller sets at least one of the remaining communication devices as a backup communication device that transmits and receives the communication data between the server device and the vehicle.

Abstract: An external communication system for a vehicle includes multiple communication devices and a controller. The multiple communication devices are provided in the vehicle. The communication devices transmit and receive communication data between a server device and the vehicle via mutually different communication paths. The controller is control communication by the multiple communication devices. The controller sets at least one of the multiple communication devices as a main communication device that transmits and receives the communication data between the server device and the vehicle. The controller sets at least one of the remaining communication devices as a backup communication device that transmits and receives the communication data between the server device and the vehicle.

Abstract: An external communication system for a vehicle includes communication devices and a controller. The communication devices are provided in the vehicle. The communication devices are configured to transmit and receive communication data between a server device and the vehicle via mutually different communication paths. The controller is configured to control communication by the communication devices. The communication devices include a first communication device and an inter-vehicle communication device. When the inter-vehicle communication device is requested, from another vehicle, to acquire communication data between the another vehicle and the server device, the controller transmits communication data received by the first communication device from the server device, from the inter-vehicle communication device to the another vehicle, and transmits communication data received by the inter-vehicle communication device from the another vehicle, from the first communication device to the server device.