US 12,463,845 B2
Relay device, relay system, relaying method, and computer program
Darmawan Go, Yokkaichi (JP); Tomohiro Otsu, Yokkaichi (JP); Yoshitaka Kikuchi, Yokkaichi (JP); Takeshi Hagihara, Yokkaichi (JP); Hirofumi Urayama, Yokkaichi (JP); and Hideki Maeda, Yokkaichi (JP)
Assigned to AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
Appl. No. 18/571,571
Filed by AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
PCT Filed Jun. 14, 2022, PCT No. PCT/JP2022/023801
§ 371(c)(1), (2) Date Dec. 18, 2023,
PCT Pub. No. WO2023/276657, PCT Pub. Date Jan. 5, 2023.
Claims priority of application No. 2021-108233 (JP), filed on Jun. 30, 2021.
Prior Publication US 2024/0283676 A1, Aug. 22, 2024
Int. Cl. H04L 12/46 (2006.01); H04L 9/40 (2022.01); H04L 12/40 (2006.01)
CPC H04L 12/4604 (2013.01) [H04L 12/40006 (2013.01); H04L 63/1466 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A vehicle-mounted relay device for relaying Ethernet frames comprising:
a plurality of PHY units corresponding to a plurality of vehicle-mounted devices;
a switch unit to which the plurality of PHY units are connected; and
a control unit configured to monitor operating states of the plurality of PHY units,
wherein the plurality of PHY units include a predetermined PHY unit whose operating state switches between a sleep state and an active state in response to reception of a predetermined control signal that differs from the Ethernet frames, and
when an Ethernet frame to be transmitted from the predetermined PHY unit has been detected during a period where the predetermined PHY unit is in the sleep state, the control unit executes switching control to switch the predetermined PHY unit to the active state, and
wherein the control unit includes a frame storage unit configured to store the Ethernet frame to be transmitted from the predetermined PHY unit, and
after executing the switching control, the control unit executes transfer control for outputting the Ethernet frame stored in the frame storage unit to the predetermined PHY unit.