US 12,069,152 B2
In-vehicle relay device and relay method
Takuya Kobayashi, Yokkaichi (JP)
Assigned to AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
Appl. No. 17/756,235
Filed by AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
PCT Filed Nov. 10, 2020, PCT No. PCT/JP2020/041873
§ 371(c)(1), (2) Date May 19, 2022,
PCT Pub. No. WO2021/100548, PCT Pub. Date May 27, 2021.
Claims priority of application No. 2019-211779 (JP), filed on Nov. 22, 2019.
Prior Publication US 2022/0417346 A1, Dec. 29, 2022
Int. Cl. G06F 15/16 (2006.01); H04L 12/46 (2006.01); H04L 12/66 (2006.01); H04L 69/08 (2022.01); H04L 67/12 (2022.01)
CPC H04L 69/08 (2013.01) [H04L 12/46 (2013.01); H04L 12/66 (2013.01); H04L 67/12 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An in-vehicle relay device to which a first communication line and a second communication line are connected and which relays communication between the first and the second communication lines, communication being performed in accordance with a first communication protocol and a second communication protocol on the first and second communication lines, respectively, the in-vehicle relay device comprising:
a microcomputer that can be switched to a sleep state and a non-sleep state, the microcomputer including a first non-transitory, machine-readable medium storing instructions which, when executed by at least one first programmable processor, causes the at least one first programmable processor to perform processing for relaying communication between the first and second communication lines when in the non-sleep state;
a conversion unit that is interposed between the second communication line and the microcomputer, that can be switched to a sleep state and a non-sleep state, and that, in the non-sleep state, can perform conversion between analog signals that are transmitted and received via the second communication line and digital signals that are input to and output from the microcomputer; and
a bypass circuit being an integrated circuit including a second non-transitory, machine-readable medium storing instructions which, when executed by at least one second programmable processor, causes the at least one second programmable processor to transmit an activation signal conforming to the second communication protocol to the second communication line when: (1) the microcomputer is in the sleep state; and (2) the bypass circuit receives an activation signal conforming to the first communication protocol from the first communication line so as to bypass the microcomputer, and wherein the bypass circuit outputs a control signal for controlling the activation of the conversion unit.