公开(公告)号：US12047062B2

公开(公告)日：2024-07-23

申请号：US17595051

申请日：2020-04-03

Applicant: Hitachi Astemo, Ltd.

Inventor： Tatsuo Nakagawa ,  Akeo Satoh ,  Akira Kotabe

IPC: H03K17/687 ,  G01R31/50

CPC classification number: H03K17/6871 ,  G01R31/50

Abstract: An electronic circuit that recognizes a disconnected state from an outside during disconnection of a power supply line is provided. For this purpose, an electronic circuit includes: a load provided between a power supply line and an output terminal in the electronic circuit; a transistor provided between the load and the output terminal; a current generation circuit that generates current using a power supply voltage at a power supply line in the electronic circuit; and a control circuit that controls the transistor using a control voltage that changes according to the current generated by the current generation circuit.

公开(公告)号：US20240244807A1

公开(公告)日：2024-07-18

申请号：US18563667

申请日：2022-03-02

Applicant: HITACHI ASTEMO, LTD.

Inventor： Takahiro ARAKI ,  Takeshi TOKUYAMA ,  Masahiro SEO ,  Noriyuki MAEKAWA ,  Shigehisa AOYAGI

IPC: H05K7/20 ,  H02M7/00 ,  H05K7/14

CPC classification number: H05K7/20927 ,  H02M7/003 ,  H05K7/14322

Abstract: An electric power converter includes: an inverter circuit including a plurality of switching elements; a first capacitor and a second capacitor connected in parallel with the inverter circuit; a control circuit unit that controls the inverter circuit; and a connection conductor portion that connects the first capacitor and the second capacitor, wherein a conductive member is disposed between the control circuit unit and the connection conductor portion.

公开(公告)号：US20240241747A1

公开(公告)日：2024-07-18

申请号：US18559513

申请日：2022-02-04

Applicant: Hitachi Astemo, Ltd.

Inventor： Masashi MIZOGUCHI ,  Tomohito EBINA ,  Kazuyoshi SERIZAWA ,  Kenichi OSADA ,  Tasuku ISHIGOOKA ,  Takeshi FUKUDA

IPC: G06F9/455

CPC classification number: G06F9/45558 ,  G06F2009/45579 ,  G06F2009/45591

Abstract: An electronic controller includes: a virtual machine that accesses a first virtual driver to execute a process; a hypervisor that calls a first real driver of a first peripheral, based on a peripheral access request received from the first virtual driver; an access recording unit that calls the first virtual driver to record a peripheral access request transmitted to the hypervisor; a state recording unit that calls the first real driver to record a state of a register of the first peripheral; and a monitoring unit that monitors an operation of the hypervisor. The monitoring unit determines an abnormality of the hypervisor, based on a record by the access recording unit and on a record by the state recording unit.

公开(公告)号：US20240241720A1

公开(公告)日：2024-07-18

申请号：US18563747

申请日：2022-02-09

Applicant: HITACHI ASTEMO, LTD.

Inventor： Akihiro HORI ,  Masumi KAWAKAMI ,  Tomoaki NAKAMURA ,  Tomomi OKAMOTO ,  Hajime SAITO ,  Takayuki KAWASHIMA

IPC: G06F8/77

CPC classification number: G06F8/77

Abstract: An improvement system includes: a first correlation calculation unit which reads parameter information, which is information regarding a plurality of evaluation indexes in a business process, and calculates a first correlation in which a correlation between the evaluation indexes is expressed by a correlation coefficient; a graph generation unit which creates a causal relationship graph, in which the evaluation indexes are set as nodes and the correlation between the evaluation indexes is represented by a link, on the basis of the first correlation and order information which is information regarding priorities of the plurality of evaluation indexes; an interface unit which presents the causal relationship graph to a user and receives a change to the causal relationship graph by the user; and an order calculation unit which updates the order information on the basis of the change to the causal relationship graph by the user, and enables the graph generation unit to generate the causal relationship graph after the change by the user.

公开(公告)号：US20240240965A1

公开(公告)日：2024-07-18

申请号：US18561427

申请日：2022-03-07

Applicant: HITACHI ASTEMO, LTD.

Inventor： Takeshi OGATA

IPC: G01C21/00

CPC classification number: G01C21/3822

Abstract: An object of the present invention is to determine a difference on a map by using an exterior environment recognition sensor of a traveling vehicle and host vehicle position estimation information on the basis of existing map information and to enable the difference to be transmitted to a map server. According to the present invention, there is provided an in-vehicle map information correction device that corrects map information, the map information correction device including: a map holding unit (102) that holds the map information; a position estimation unit (104) that estimates position information on a vehicle; at least one of a lane change information acquisition unit (106) that acquires lane change information indicating whether or not the vehicle has changed a lane and a dividing line information acquisition unit (105) that acquires information on a dividing line type of a road on which the vehicle is traveling; and a difference determination unit (103) that generates correction information for correcting the map information based on at least one of the position information, the lane change information, and the information on the dividing line type.

公开(公告)号：US20240235900A1

公开(公告)日：2024-07-11

申请号：US18561655

申请日：2022-02-02

Applicant: Hitachi Astemo, Ltd.

Inventor： Yusuke WACHI ,  Takayasu NORIMATSU

IPC: H04L25/02 ,  H04B3/14

CPC classification number: H04L25/0272 ,  H04B3/146

Abstract: Provided is a technique of power superposition differential data transmission with low radiation noise at low cost and capable of operating at a radio frequency. A differential transmission board superimposes DC power on a differential data signal from a transmission/reception IC and then transmits the signal to a cable, and includes: a first differential transmission line including two wiring patterns; a second differential transmission line including two wiring patterns; two DC transmission lines that transmit the DC power; two capacitor elements that cut off the DC power and pass only the differential data signal; and two inductor elements that cut off a radio-frequency component that is the differential data signal and pass only a DC component, in which the first differential transmission line and the second differential transmission line are connected in series, in which the two capacitor elements are connected in series to the second differential transmission line, in which the second differential transmission line and the DC transmission line are connected via the two inductor elements, and in which a characteristic impedance in a differential mode of the first differential transmission line and a characteristic impedance in the differential mode of the second differential transmission line are substantially equivalent, and a characteristic impedance in an in-phase mode of the second differential transmission line is higher than a characteristic impedance in the in-phase mode of the first differential transmission line.

公开(公告)号：US20240213886A1

公开(公告)日：2024-06-27

申请号：US18563035

申请日：2021-09-10

Applicant: HITACHI ASTEMO, LTD.

Inventor： Youhei NISHIZAWA

IPC: H02M7/00 ,  H02M1/14 ,  H02M7/5387

CPC classification number: H02M7/003 ,  H02M1/143 ,  H02M7/5387

Abstract: A power conversion device includes: a power conversion circuit that converts DC power into AC power; a positive electrode bus bar and a negative electrode bus bar connected to the power conversion circuit; a capacitor connected to at least one of the positive electrode bus bar and the negative electrode bus bar; a base plate made of metal on which the capacitor is placed; and a housing in which the power conversion circuit, the capacitor, the base plate, the positive electrode bus bar, and the negative electrode bus bar are accommodated, and a refrigerant passage is formed, in which the positive electrode bus bar and the negative electrode bus bar are installed in the housing via a resin member having insulating property, and in which the base plate on which the capacitor is placed is installed in the housing, and a thermal resistance from the capacitor to the refrigerant passage is larger than a thermal resistance from the positive electrode bus bar and the negative electrode bus bar to the refrigerant passage.

公开(公告)号：US20240201315A1

公开(公告)日：2024-06-20

申请号：US18555563

申请日：2022-02-28

Applicant: HITACHI ASTEMO, LTD.

Inventor： Kenta MORISHIMA ,  Tetsuya YAMADA

IPC: G01S5/04 ,  G01S13/46 ,  G08G1/09 ,  G08G1/16

CPC classification number: G01S5/04 ,  G01S13/46 ,  G08G1/09 ,  G08G1/16 ,  G01S2013/468

Abstract: An object of the present invention is to obtain a vehicle control device capable of guiding a host vehicle to a narrow area by low-speed automatic driving by quick and precise positioning of the host vehicle, and guiding the host vehicle to a stop position of which details are unknown by designating each stop frame by beacons. A vehicle control device 101 according to the present invention includes a wireless reception unit 121 that receives radio waves through a plurality of antennas 102 mounted on a host vehicle 100, the radio waves being transmitted from a plurality of beacons 201, a position information acquisition unit 122 that obtains position information of the beacons using orientation information of the radio waves received by the wireless reception unit, and a guidance area estimation unit 124 that sets a diagonal line 301 of a rectangular area 302 from the position information and estimates a guidance area 312 from the diagonal line.

公开(公告)号：US20240199073A1

公开(公告)日：2024-06-20

申请号：US18555718

申请日：2022-02-04

Applicant: Hitachi Astemo, Ltd.

Inventor： Hiroki MAEHAMA ,  Hiroaki ITO ,  Takeshi YAMADA ,  Koji MAEDA ,  Kazuyoshi SERIZAWA

IPC: B60W60/00 ,  B60W50/04

CPC classification number: B60W60/001 ,  B60W50/04 ,  B60W2530/00 ,  B60W2554/00

Abstract: An electronic control device that executes arithmetic processing for controlling an operation of a vehicle includes: a determination unit that is connected to one or a plurality of electronic devices that recognize an external environment on the basis of information of a sensor provided in the vehicle and determines an operation of the vehicle on the basis of external recognition information transmitted from the electronic devices; and a functional boundary change determination unit that determines changes in functions of the electronic control device and the electronic devices if it is determined that a processing load of the electronic control device is high.

公开(公告)号：US20240195283A1

公开(公告)日：2024-06-13

申请号：US18287940

申请日：2022-02-24

Applicant: HITACHI ASTEMO, LTD.

Inventor： Hiroshi SUZUKI ,  Shinichirou WADA ,  Masahiro DOI ,  Yoshiaki MIZUHASHI

IPC: H02M1/08 ,  H02M1/00 ,  H02M7/537 ,  H02P27/06 ,  H03K17/16

CPC classification number: H02M1/08 ,  H02M1/0054 ,  H02M7/537 ,  H03K17/161 ,  H02P27/06

Abstract: A drive device for a voltage-driven semiconductor switching element includes: a gate drive circuit configured to drive the semiconductor switching element; and a gate voltage hold circuit configured to hold a gate voltage applied to the semiconductor switching element at a predetermined hold voltage higher than a threshold voltage of the semiconductor switching element and lower than a Miller voltage of the semiconductor switching element. The gate voltage hold circuit starts an operation of holding the gate voltage at the hold voltage after a rise of a voltage between main terminals of the semiconductor switching element at a turn-off time of the semiconductor switching element and before a maximum value of the voltage between the main terminals.