Abstract: A display system includes a display device configured to display a screen; and a plurality of ECUs connected to a communication network. The ECUs include a first ECU and a second ECU. The first ECU is configured to perform determination regarding whether operation information when the first ECU makes a screen he displayed is a processing target, in a case where the operation information is not a processing target of the first ECU, set a transmission destination of notification in processing after the determination to a second ECU and include the operation information in the notification, and for the operation information when the second ECU makes the screen he displayed, transmit the operation information to the second ECU before the determination is performed. The second ECU is configured to perform the determination and the processing after the determination on the operation information received from the first ECU.

Abstract: A display system includes a display device configured to display a screen; and a plurality of ECUs connected to a communication network. The ECUs include a first ECU and a second ECU. The first ECU is configured to perform determination regarding whether operation information when the first ECU makes a screen he displayed is a processing target, in a case where the operation information is not a processing target of the first ECU, set a transmission destination of notification in processing after the determination to a second ECU and include the operation information in the notification, and for the operation information when the second ECU makes the screen he displayed, transmit the operation information to the second ECU before the determination is performed. The second ECU is configured to perform the determination and the processing after the determination on the operation information received from the first ECU.

Abstract: A traffic signal cycle estimation device 2 is provided, which includes a travel time acquisition unit 4 acquiring a traffic signal section travel time, a frequency distribution calculation unit 5 calculating a frequency distribution of the traffic signal section travel times on the basis of the traffic signal section travel times, a travel time group determination unit 6 determining a first travel time group in which the vehicle does not stop at the traffic signal and a second travel time group in which the vehicle stops at the traffic signal on the basis of the frequency distribution of the traffic signal section travel times, and a traffic signal cycle estimation unit 7 estimating cycle information of the traffic signal on the basis of a difference between the first travel time group and the second travel time group.

Abstract: A traffic signal cycle estimation device 2 is provided, which includes a travel time acquisition unit 4 acquiring a traffic signal section travel time that is a time taken from the entrance of a vehicle into a predetermined traffic signal section that corresponds to a traffic signal until the vehicle passes through the traffic signal section, a frequency distribution calculation unit 5 calculating a frequency distribution of the traffic signal section travel times acquired by the travel time acquisition unit 4 on the basis of the traffic signal section travel times, a travel time group determination unit 6 determining a first travel time group in which the vehicle does not stop at the traffic signal and a second travel time group in which the vehicle stops at the traffic signal on the basis of the frequency distribution of the traffic signal section travel times calculated by the frequency distribution calculation unit 5, and a traffic signal cycle estimation unit 7 estimating cycle information of the traffic