公开(公告)号：US20230409518A1

公开(公告)日：2023-12-21

申请号：US18036029

申请日：2021-08-31

Applicant: HITACHI ASTEMO, LTD.

Inventor： Yasuhiro IKEDA ,  Tadanobu TOBA ,  Kenichi SHIMBO ,  Atsushi ARATA ,  Takeo YAMASHITA ,  Atsushi ICHIGE ,  Shinichi NONAKA

IPC: G06F15/78 ,  G01R31/3185 ,  G06F15/177

CPC classification number: G06F15/7892 ,  G01R31/318516 ,  G06F15/177

Abstract: An arithmetic operation device executes a test using a partially reconfigurable programmable logic unit, the programmable logic unit includes a test target circuit which is a user circuit, and a non-test circuit which is a user circuit which is not the test target circuit, and the arithmetic operation device includes a configuration control unit which causes the programmable logic unit to form, by partial reconfiguration, a test partition unit which separates the test target circuit and the non-test circuit, and a partition control unit which controls the test partition unit to test the test target circuit.

公开(公告)号：US20230273251A1

公开(公告)日：2023-08-31

申请号：US18015441

申请日：2021-07-12

Applicant: Hitachi Astemo, Ltd.

Inventor： Soshi SHIMOMURA ,  Yasuhiro IKEDA ,  Yutaka UEMATSU ,  Hideyuki SAKAMOTO

IPC: G01R31/11 ,  H04B3/46

CPC classification number: G01R31/11 ,  H04B3/46

Abstract: A communication device includes: a transmitting circuit that repeatedly outputs a first prescribed signal to a transmission path at a prescribed cycle; a receiving circuit that receives a second prescribed signal repeatedly output at the prescribed cycle from another communication device via the transmission path; a waveform equivalence processing unit that performs waveform equivalence processing on the signal received by the receiving circuit; a holding unit that holds parameters of the waveform equivalence processing; a storage unit that stores information on a signal propagation speed in the transmission path, duration of a prescribed cycle, and a transmission rate; and an abnormality position determining unit that calculates a distance to a position of an abnormality in the transmission path using information on the parameter caused by the abnormality of the transmission path among the parameters and the information stored in the storage unit.

公开(公告)号：US20230239182A1

公开(公告)日：2023-07-27

申请号：US18009458

申请日：2021-02-26

Applicant: Hitachi Astemo, Ltd.

Inventor： Yasuhiro IKEDA ,  Yutaka UEMATSU ,  Hideyuki SAKAMOTO

IPC: H04L25/03 ,  H04B3/04

CPC classification number: H04L25/03878 ,  H04B3/04

Abstract: An electronic control device includes a receiving unit that receives a data signal from an external device via a transmission line, a determination criterion selection unit that determines a determination criterion based on transition information of a waveform in the data signal, and a condition determination unit that determines a condition of a communication system including the external device, the receiving unit, and the transmission line based on a transmission waveform characteristic in the data signal and the determination criterion.