公开(公告)号：US20230288954A1

公开(公告)日：2023-09-14

申请号：US18013784

申请日：2021-04-16

Applicant: Hitachi Astemo, Ltd.

Inventor： Daisuke TANAKA ,  Hidetatsu YAMAMOTO

IPC: G06F1/12 ,  H03K3/01

CPC classification number: G06F1/12 ,  H03K3/01

Abstract: There is provided an electronic control device that performs distributed processing using a plurality of microcomputers and can perform highly accurate time synchronization between the microcomputers with less delay without hindering arithmetic processing of each microcomputer. The device includes a plurality of microcomputers, and a waveform generation circuit connected between a master microcomputer serving as a time synchronization source and a slave microcomputer that performs time synchronization, among the plurality of microcomputers, wherein the master microcomputer outputs a reset signal synchronized with time to the waveform generation circuit, the waveform generation circuit outputs a waveform signal corresponding to a change in time of the master microcomputer, to the slave microcomputer, and the slave microcomputer measures a voltage value of the waveform signal and detects time corresponding to the measured voltage value.

公开(公告)号：US20230232589A1

公开(公告)日：2023-07-20

申请号：US18009911

申请日：2021-05-20

Applicant: Hitachi Astemo, Ltd. ,  HITACHI, LTD.

Inventor： Ryujo SUGAHARA ,  Eiji ICHIKAWA ,  Hideyuki SAKAMOTO ,  Daisuke TANAKA ,  Hidetatsu YAMAMOTO ,  Michihito WATARAI ,  Minami TERANISHI

IPC: H05K7/20

CPC classification number: H05K7/20409 ,  H05K7/20154

Abstract: An electronic control device includes a housing including a first region in which heat dissipation fins are formed on one side and an electronic component generating the largest amount of heat is in thermal contact with the other side, and a second region in which an electronic component is in thermal contact with the one side and the other side.

公开(公告)号：US20230209738A1

公开(公告)日：2023-06-29

申请号：US18008464

申请日：2021-05-20

Applicant: Hitachi Astemo, Ltd. ,  HITACHI, LTD

Inventor： Ryujo SUGAHARA ,  Hidetatsu YAMAMOTO ,  Daisuke TANAKA ,  Eiji ICHIKAWA ,  Michihito WATARAI ,  Hideyuki SAKAMOTO

IPC: H05K5/00 ,  H05K1/14 ,  H05K5/06

CPC classification number: H05K5/0069 ,  H05K1/14 ,  H05K5/069

Abstract: An electronic control device includes: a first board on which a bus bridge and an external communication connector are mounted; a second board on which an accelerator SoC is mounted, the second board being electrically connected to the first board; and a B-to-B connector capable of performing signal transmission between the bus bridge and the accelerator SoC.

公开(公告)号：US20240184343A1

公开(公告)日：2024-06-06

申请号：US18286145

申请日：2022-02-04

Applicant: Hitachi Astemo, Ltd.

Inventor： Daisuke TANAKA ,  Hidetatsu YAMAMOTO

IPC: G06F1/26 ,  H02J7/00 ,  H03K17/56

CPC classification number: G06F1/26 ,  H02J7/0063 ,  H03K17/56

Abstract: To achieve an electronic module capable of reducing dark current, which is current flowing when the electronic module is turned off, and contributing to prevention of battery wear of a vehicle or the like. Therefore, the electronic module connected to a first electronic module via a communication line includes: a microcomputer; a power supply IC that supplies power to the microcomputer; a power supply control circuit that supplies power from a battery power supply to the power supply IC; a control line connected to the communication line; and a first switch circuit that connects the control line and the power supply control circuit.