Abstract: An information processing apparatus is mounted on a vehicle. The information processing apparatus includes: a first acquiring unit that acquires, from each of one or more traffic lights, traffic light information including identifying information for identifying a corresponding traffic light, position information of the corresponding traffic light, and start time and end time of lighting in a color of a traffic signal indicating stop of the vehicle; a calculation unit that calculates a signal waiting time that indicates a time period for the vehicle to stop at a traffic light by using one or more pieces of the traffic light information; and an electric power control unit that controls an electric power state during stop of the vehicle in a multistage manner in accordance with the signal waiting time.

Abstract: A communication apparatus includes a first storage unit, a second storage, and a first registrator. The first storage stores at least a destination address representing an IPv6 address that is a destination of a packet and a next hop address representing an IPv6 address of a next hop representing the next destination to which the packet is transferred in association with each other. The second storage stores an IPv6 address of a default router to which the packet is transferred when it is not possible to determine the next hop address by using the first storage. When a second RA packet representing an RA packet other than first RA packets representing a RA packet for 6LowPAN is received, the first registrator registers an IPv6 address from which the second RA packet has been transmitted as an IPv6 address of the default router.

Abstract: An information processing apparatus is mounted on a vehicle. The information processing apparatus includes: a first acquiring unit that acquires, from each of one or more traffic lights, traffic light information including identifying information for identifying a corresponding traffic light, position information of the corresponding traffic light, and start time and end time of lighting in a color of a traffic signal indicating stop of the vehicle; a calculation unit that calculates a signal waiting time that indicates a time period for the vehicle to stop at a traffic light by using one or more pieces of the traffic light information; and an electric power control unit that controls an electric power state during stop of the vehicle in a multistage manner in accordance with the signal waiting time.

Abstract: An information processing apparatus is mounted on a vehicle. The information processing apparatus includes: a first acquiring unit that acquires, from each of one or more traffic lights, traffic light information including identifying information for identifying a corresponding traffic light, position information of the corresponding traffic light, and start time and end time of lighting in a color of a traffic signal indicating stop of the vehicle; a calculation unit that calculates a signal waiting time that indicates a time period for the vehicle to stop at a traffic light by using one or more pieces of the traffic light information; and an electric power control unit that controls an electric power state during stop of the vehicle in a multistage manner in accordance with the signal waiting time.

Abstract: A communication apparatus includes a first storage unit, a second storage, and a first registrator. The first storage stores at least a destination address representing an IPv6 address that is a destination of a packet and a next hop address representing an IPv6 address of a next hop representing the next destination to which the packet is transferred in association with each other. The second storage stores an IPv6 address of a default router to which the packet is transferred when it is not possible to determine the next hop address by using the first storage. When a second RA packet representing an RA packet other than first RA packets representing a RA packet for 6LowPAN is received, the first registrator registers an IPv6 address from which the second RA packet has been transmitted as an IPv6 address of the default router.

Abstract: An information processing apparatus is mounted on a vehicle. The information processing apparatus includes: a first acquiring unit that acquires, from each of one or more traffic lights, traffic light information including identifying information for identifying a corresponding traffic light, position information of the corresponding traffic light, and start time and end time of lighting in a color of a traffic signal indicating stop of the vehicle; a calculation unit that calculates a signal waiting time that indicates a time period for the vehicle to stop at a traffic light by using one or more pieces of the traffic light information; and an electric power control unit that controls an electric power state during stop of the vehicle in a multistage manner in accordance with the signal waiting time.

Abstract: An error detection method is to detect an error in a program to control hardware, which executes predetermined processing, via a register. The error detection method includes: outputting a signal indicating whether the predetermined processing is in execution; detecting that a change is made in a register value in the register, which register value is related to control of the predetermined processing, and outputting a detection signal; and detecting an error when it is detected, based on the signal indicating whether the predetermined processing is in execution and on the detection signal, that the change is made in the register value while the predetermined processing is in execution.

Abstract: An error detection method is to detect an error in a program to control hardware, which executes predetermined processing, via a register. The error detection method includes: outputting a signal indicating whether the predetermined processing is in execution; detecting that a change is made in a register value in the register, which register value is related to control of the predetermined processing, and outputting a detection signal; and detecting an error when it is detected, based on the signal indicating whether the predetermined processing is in execution and on the detection signal, that the change is made in the register value while the predetermined processing is in execution.