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公开(公告)号：US12004333B2
公开(公告)日：2024-06-04
申请号：US17684469
申请日：2022-03-02
Inventor： Shohei Nagai
IPC: H05K7/20 , H01L23/473 , H02M7/537
CPC classification number: H05K7/20927 , H01L23/473 , H02M7/537
Abstract: A power converter includes: a semiconductor module that includes a semiconductor element for power conversion, the semiconductor module having a module surface on which an input terminal electrically connected to the semiconductor element is disposed; a capacitor in which a capacitor terminal is disposed, the capacitor having a capacitor surface facing the module surface; a cooler that is disposed between the semiconductor module and the capacitor; and a connecting member that electrically connects the input terminal and the capacitor terminal.
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公开(公告)号：US20240113672A1
公开(公告)日：2024-04-04
申请号：US18472389
申请日：2023-09-22
Inventor： SHOTARO WADA , TOMOHIRO NEZUKA , YOSHIKAZU FURUTA
CPC classification number: H03F3/387 , H03F3/45475 , H03F2200/129
Abstract: A modulator includes an integrator, an input chopping switch, and output chopping switch, and a control circuit. The integrator has a differential amplifier, a first switch and a series circuit. The first switch is connected between input and output terminals of the differential amplifier. The series circuit is connected between the input and output terminals of the differential amplifier. The series circuit has a second switch, an input capacitance chopping switch, an integration capacitor and an output capacitance chopping switch. The control circuit controls the input chopping switch and the output chopping switch to execute chopping being at a chopping frequency identical to the input capacitance chopping switch and the output capacitance chopping switch. The chopping frequency of the input and output capacitance chopping switches is lower than a switching frequency of the first switch.
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公开(公告)号：US20240112577A1
公开(公告)日：2024-04-04
申请号：US18470712
申请日：2023-09-20
Inventor： Koji OYA
IPC: G08G1/0967 , B60W60/00 , G08G1/00 , G08G1/16
CPC classification number: G08G1/096725 , B60W60/001 , G08G1/166 , G08G1/22 , B60W2520/10 , B60W2552/10 , B60W2554/4042
Abstract: A vehicle travel path planning system, which plans an optimal combination of travel paths for all of multiple vehicles included in a vehicle group, includes: a single path planning unit planning, as a single path, one travel path for each of the multiple vehicles; a candidate path generation unit generating multiple candidate paths similar to the single path planned for each of the multiple vehicles; and a combination search unit selecting an optimal travel path from the multiple candidate paths generated for each of the multiple vehicles and searching for an optimal travel path combination for all of the multiple vehicles included in the vehicle group.
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134.发明公开公开(公告)号：US20240110309A1
公开(公告)日：2024-04-04
申请号：US18478203
申请日：2023-09-29
Applicant: CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY , MIRISE Technologies Corporation , DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kiyoshi BETSUYAKU , Norihiro HOSHINO , Isaho KAMATA , Hidekazu TSUCHIDA , Akiyoshi HORIAI , Takeshi OKAMOTO
Abstract: Provided are a method for manufacturing a silicon carbide single crystal, and a silicon carbide single crystal ingot which ensure a high crystal growth rate and increase the ratio of conversion from basal plane dislocations to threading edge dislocations. The method prepares a seed substrate composed of silicon carbide having an off-angle in a [1-100] direction with respect to a {0001} plane; and grows a silicon carbide single crystal layer on the seed substrate by an HTCVD method, thereby converting basal plane dislocations contained in the seed substrate to threading edge dislocations during crystal growth.
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135.发明公开公开(公告)号：US20240110308A1
公开(公告)日：2024-04-04
申请号：US18468030
申请日：2023-09-15
Applicant: CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY , MIRISE Technologies Corporation , DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kiyoshi BETSUYAKU , Norihiro HOSHINO , Isaho KAMATA , Hidekazu TSUCHIDA , Takeshi OKAMOTO , Takahiro KANDA
Abstract: Provided are a method for manufacturing a silicon carbide single crystal, which can suppress conversion of threading edge dislocations into prismatic plane dislocations and conversion of the prismatic plane dislocations into basal plane dislocations; and a silicon carbide single crystal ingot and a silicon carbide wafer, in which conversion from threading edge dislocations into prismatic plane dislocations and conversion from the prismatic plane dislocations into basal plane dislocations have been suppressed. A silicon carbide single crystal is grown on the surface of a seed substrate by a gas method so that a temperature gradient in the radial direction of the seed substrate takes a predetermined value or lower during the growth. The area of regions T1 to T4, where regions R1 to R3 of a basal plane whose shear stresses exceed critical resolved shear stress, and regions S1 to S4 of a prismatic plane whose shear stresses exceed critical resolved shear stress overlap, is less than a half of the area of a crystal growth surface. Furthermore, the area of the regions T1 to T4 is smaller than the area of regions V1 to V4 where a region R4 of the basal plane whose shear stress does not exceed the critical resolved shear stress overlaps the regions S1 to S4.
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Patent Agency Ranking
公开(公告)号：US20240085539A1
公开(公告)日：2024-03-14
申请号：US18337670
申请日：2023-06-20
Inventor： Masashige SATO , Taku SUZUKI
IPC: G01S7/4912 , G01S17/89
CPC classification number: G01S7/4912 , G01S17/89
Abstract: A LIDAR device includes a transmission unit, a scanning unit, a reception unit, a data conversion unit, a data holding unit, a frequency analysis unit configured to execute frequency analysis to acquire ranging point data, and a point group generator configured to generate a group of ranging points acquired by using a result of frequency analysis on a first analysis target data set and a group of ranging points acquired by using a result of frequency analysis on a second analysis target data set.
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公开(公告)号：US11890949B2
公开(公告)日：2024-02-06
申请号：US17722444
申请日：2022-04-18
Inventor： Hyoungjun Na , Yoshikazu Furuta , Shigeki Otsuka , Takasuke Ito , Tomohiro Nezuka
CPC classification number: B60L3/0084 , B60L3/0092 , G06F13/4247 , H01M10/425 , H01M2010/4271
Abstract: In a communication system, a control unit and driver units are connected in a daisy chain; each unit includes a corresponding insulated communication circuit, respectively. The control unit measures a communication delay time between the control unit and each driver unit from a response time to transmission of a pulse signal performed to each driver unit during a measurement period. Then, based on each communication delay time, the control unit transmits a shift time to each driver unit for equalizing the timing of signals output by the driver units. When each driver unit receives, from the control unit, an instruction instructing each driver unit to output a signal, each driver unit outputs the signal when the shift time has elapsed.
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公开(公告)号：US11877883B2
公开(公告)日：2024-01-23
申请号：US17879056
申请日：2022-08-02
Inventor： Fan Cheng , Yuki Anno , Yoshinori Tsuchiya
IPC: A61B7/04
CPC classification number: A61B7/04 , A61B2562/0204
Abstract: A biological sound detection device includes a housing, a medium, a transducer unit, a detection unit, and a pressure adjusting unit. The medium has an acoustic impedance closer to water than air. The transducer unit is arranged in the housing, and converts a biological sound transmitted through the medium into an electric signal. The detection unit provides, together with the housing, an accommodation region that accommodates the medium, detects the biological sound, transmits the biological sound to the medium, and is deformable in a direction approaching the transducer unit according to a load of a physical body. The pressure adjusting unit adjusts a pressure of the medium so as to suppress an increase in the pressure of the medium due to deformation of the detection unit.
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公开(公告)号：US11855618B2
公开(公告)日：2023-12-26
申请号：US17953456
申请日：2022-09-27
Inventor： Hironori Akiyama , Akimasa Niwa
IPC: H03K17/00 , H03K17/687 , H03K17/284 , H03K17/94 , H03K17/06 , H03K17/16 , H03K17/0812 , H03K17/042 , H03K17/081
CPC classification number: H03K17/687 , H03K17/04206 , H03K17/063 , H03K17/08104 , H03K17/08122 , H03K17/16 , H03K17/284 , H03K17/94
Abstract: A gate drive device drives a gate of a semiconductor switching element and controls a transient voltage corresponding to a voltage of a main terminal of the semiconductor switching element to a target value of the transient voltage at a time of switching the semiconductor switching element. The gate drive device includes a calculation circuit, a drive circuit, a detection circuit, and a learning circuit. The calculation circuit executes a predetermined calculation mode to calculate an operation amount for operating gate drive speed of the semiconductor switching element. The drive circuit drives the gate of the semiconductor switching element according to the operation amount. The detection circuit detects the transient voltage. The learning circuit executes learning processing to change the predetermined calculation mode based on the operation amount calculated by the calculation circuit and the transient voltage detected by the detection circuit.
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公开(公告)号：US20230402049A1
公开(公告)日：2023-12-14
申请号：US18320656
申请日：2023-05-19
Inventor： Tomoki TANEMURA , Takashi TAKAZAWA , Yoshinori TSUCHIYA , Masaaki KAWAUCHI
IPC: G10L21/0224 , H04R1/40 , H04R3/00 , G10L25/51 , G10L25/84
CPC classification number: G10L21/0224 , H04R1/406 , H04R3/005 , G10L25/51 , G10L25/84 , H04R2410/01 , G10L2021/02166
Abstract: A microphone system causes a microphone disposed in an acoustic space to collect sound, classifies a sound included in a sound data related to the sound collected by the microphone into a type of speech sound of a human present in the acoustic space and a type of noise that is a sound other than the speech sound based on a value related to a reflection sound reflected in the acoustic space, and outputs data related to the classified speech sound to a speech recognition device.
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