10900 patents
Page 5 of 545
Utility
Semiconductor Device
4 Jan 24
A semiconductor device according to the present disclosure includes a base body having a first face and a second face, a lead passing through a through hole penetrating the base body and extending to a side of the first face, a sealing body filling the through hole, a dielectric substrate having a first main surface and a second main surface erected with respect to the first face, a semiconductor laser provided on a side of the first main surface of the dielectric substrate, a signal line provided on the first main surface and electrically connected to the semiconductor laser, a connecting member electrically connecting the signal line and the lead to each other, and a rear surface conductor provided on the second main surface, wherein the sealing body is provided directly below the rear surface conductor as viewed from a direction perpendicular to the first face.
Akio SHIRASAKI, Naoki KOSAKA, Masaaki SHIMADA, Tadayoshi HATA, Nao HIROSHIGE
Filed: 28 Jan 21
Utility
Rotating Electrical Machine
4 Jan 24
A rotating electrical machine that includes a heat dissipating structure of a heat generating portion of a control board includes the control board that includes a heating element on top of a main surface, a heat sink disposed so as to oppose the main surface, and includes a recess that accommodates the heating element on an opposite surface that oppose the main surface, and a heat dissipating material formed in a gap between the heating element and the recess.
Yoshihiko ONISHI, Isao SONODA
Filed: 26 Apr 21
Utility
Gate Drive Circuit and Power Conversion Device
4 Jan 24
A gate drive circuit includes a resistor, a current detector that detects a current flowing through the resistor, and a gate driver.
Shinya KURACHI, Takayoshi MIKI, Shota MORISAKI
Filed: 24 Dec 20
Utility
Semiconductor Driving Device and Power Conversion Device Using Same
4 Jan 24
A semiconductor driving device includes: a control unit which generates an ON/OFF command for a semiconductor switching element; a gate power supply unit which generates voltage to be applied between a gate terminal and a source terminal of the semiconductor switching element; a gate driving unit which applies the voltage generated by the gate power supply unit, between the gate terminal and the source terminal; and a gate leakage current detection unit which detects gate leakage current of the semiconductor switching element on the basis of voltage occurring at a gate resistor connected to the gate terminal, using a negative-side potential of the gate power supply unit as a reference.
Kohei ONDA, Shotaro KARASUYAMA
Filed: 28 Dec 20
Utility
Power Conversion Device
4 Jan 24
A modulation control unit calculates a voltage offset on the basis of fundamental or basic voltage references, and calculates modification voltage references by performing superposition of the voltage offset on the basic voltage references; and an inverter converts, on the basis of the modification voltage references calculated by the modulation control unit, a DC voltage into three-phase voltages whose voltages are applied to three-phase windings of an alternating current rotating machine, wherein, in a case in which the basic voltage references are transformed into three-phase voltage references, and when the three-phase voltage references are defined as a maximum phase, an intermediate phase and a minimum phase in decreasing order of value, the modulation control unit calculates a first voltage offset on the basis of the DC voltage, on that of the maximum phase, and on that of sum of squares of the basic voltage references.
Masahiko ORII, Tatsuya MORI, Kenta KUBO, Kento OGIWARA
Filed: 15 Dec 20
Utility
Power Converter, Motor Driver, and Refrigeration Cycle Applied Equipment
4 Jan 24
A power converter includes a converter, a smoothing capacitor, an inverter, and a controller.
Haruka MATSUO, Takaaki TAKAHARA, Koichi ARISAWA, Keisuke UEMURA, Kenji TAKAHASHI
Filed: 6 Jan 21
Utility
Method, Device, Computer Program Product, and Non-transitory Information Storage Medium for Estimating Performance of Wireless Communication Network
4 Jan 24
A method for estimating a performance of a wireless communication network for a given time-frequency resource allocation is disclosed.
NICOLAS GRESSET
Filed: 10 Dec 21
Utility
Power Conversion Device
4 Jan 24
A power conversion device (100) includes: a switching signal generator (7) configured to generate a switching signal to output, from an inverter circuit (5), an AC voltage corresponding to a designated phase; a speed estimator (8) configured to estimate an estimated phase of a rotor of a motor (2) based on a current flowing through the motor (2); and a beat suppression controller (10) configured to output an adjusted phase to the switching signal generator (7) so as to suppress a beat component superimposed on the current flowing through the motor (2), the adjusted phase being obtained by adjusting the estimated phase.
Akane HONGYO, Yuki TANIYAMA
Filed: 14 Jan 21
Utility
Communication System, Base Station and User Equipment
4 Jan 24
Provided is a technology that can maintain the reliability and the transmission rate in the communication.
Yasuhiro ONAKA, Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Kuniyuki SUZUKI
Filed: 15 Sep 23
Utility
Power Converter and Air-conditioning Apparatus
4 Jan 24
A power converter includes a power converting module and a gate drive circuit that includes first and second drive circuits and a power supply module including a limiting resistor, a bootstrap diode, and a bootstrap capacitor, and configured to generate a voltage to be supplied to the second drive circuit.
Kenta YUASA, Kenji IWAZAKI, Keiwa TSUKANO
Filed: 4 Feb 21
Utility
Power Converting Apparatus, Air Conditioner, and Refrigeration Cycle Equipment
4 Jan 24
A converter for converting AC power from an AC power supply into DC power and outputting the DC power, an inverter for converting the DC power outputted from the converter into AC power of a variable frequency and a variable voltage value, and supplying the AC power to a load, a shunt resistor for detecting an output current of the converter, and a control device for controlling the inverter based on the detected output current are provided.
Atsushi TSUCHIYA, Kazunori HATAKEYAMA, Keisuke UEMURA
Filed: 6 Jan 21
Utility
Ac/dc Converter, Electric Motor Drive Device and Refrigeration Cycle Device
4 Jan 24
An AC/DC converter includes: a charge accumulation unit including first and second capacitors connected in series; a switching unit including a switch unit; a control unit; a switch drive unit; and first current and second current detection units.
Hiroyuki NAKAGAMI, Hiroki SUZUKI
Filed: 1 Mar 21
Utility
Power Converter, Motor Driver, and Refrigeration Cycle Applied Equipment
4 Jan 24
A power converter includes a converter that rectifies an alternating-current voltage applied from an alternating-current power supply, a capacitor connected to output ends of the converter, an inverter connected both ends of the capacitor, and a controller that controls an operation of the inverter.
Haruka MATSUO, Takaaki TAKAHARA, Koichi ARISAWA, Keisuke UEMURA, Yosuke HACHIYA
Filed: 6 Jan 21
Utility
Control device, control method for water heater, and program
2 Jan 24
In a control device, an instruction acquirer acquires an instruction to suppress in a specified period supplying of generated power generated by power generator installed in a power-consuming area to a commercial electrical power system.
Yuki Ogawa, Masaaki Yabe, Masayuki Komatsu, Satoshi Minezawa, Akihiro Toda, Takashi Arai
Filed: 20 Oct 22
Utility
Air-conditioning system and program update method of air-conditioning system
2 Jan 24
An air-conditioning system includes equipment, the equipment including one or more pieces of equipment, a high level device connected to the equipment and configured to control the equipment, a first communication unit configured to obtain, from an update management device that previously stores an update program for updating a program of the equipment, the update program, a second communication unit configured to transmit the update program to the equipment and obtain a pre-update program from the equipment, a storage device configured to store the update program and the pre-update program, and an update execution unit configured to update the program of the equipment, in which the update execution unit transmits the update program to the equipment and updates the program of the equipment, and when one of the one or more pieces of the equipment in which the program is updated does not operate normally, the update execution unit transmits the pre-update program to the one of the one or more pieces of the equipment and restores the program of the one of the one or more pieces of the equipment to the pre-update program.
Tomohide Ota
Filed: 28 Aug 18
Utility
Outdoor unit for air-conditioning apparatus
2 Jan 24
An outdoor unit for an air-conditioning apparatus includes a casing having an air inlet through which air enters the casing, an air-sending device disposed in the casing and configured to create a flow of air passing through the air inlet, a heat exchanger disposed between the casing and the air-sending device and exposed through the air inlet and including a plurality of fins spaced apart from each other, and a partition disposed in the casing and dividing a space in the casing into an air-sending device chamber containing the heat exchanger and the air-sending device and a machine chamber containing a compressor.
Kentaro Yonehara, Hiroyuki Jinnai, Takashi Ikeda, Shingo Hamada
Filed: 29 Jan 19
Utility
Image processing device, thermal image generation system, and recording medium
2 Jan 24
A background image generator (21) stores, in a storage device (3), a skeleton image obtained by calculating a feature quantity for each of multiple first thermal images (Din1) obtained by imaging by a thermal image sensor (1) in the same field of view or multiple sorted images (Dc) generated from the first thermal images, generating an average image from the first thermal images or sorted images, sharpening the average image, and then extracting a skeleton component.
Kohei Kurihara, Koichi Yamashita, Daisuke Suzuki
Filed: 11 Mar 19
Utility
Microwave heating device
2 Jan 24
A radiation element for radiating a microwave into the heating chamber at least one hollow dielectric member in which a gas is sealed, the hollow dielectric member having electrodes and a control unit having a plasma control unit for controlling the state of the hollow dielectric member and a current adjustment unit for adjusting a current to be applied to the electrodes of the hollow dielectric member under the control of the plasma control unit, the current adjustment unit being connected to the electrodes; and wherein the plasma control unit controls the state of the hollow dielectric member to put into one of states of: a plasma state in which the microwave is reflected by the gas; a plasma state in which the microwave is absorbed by the gas; and a gas state in which the microwave is allowed to be transmitted through the gas.
Hiroshi Suenobu, Shingo Yamaura, Tai Tanaka, Michio Takikawa
Filed: 2 Jul 18
Utility
Semiconductor device
2 Jan 24
An object is to provide a semiconductor device capable of reducing inductance between a high potential terminal and a low potential terminal while achieving downsizing of the semiconductor device.
Hidetaka Matsuo, Ryo Goto, Yasutaka Shimizu
Filed: 15 Nov 21
Utility
Semiconductor light-receiving element and method of manufacturing semiconductor light-receiving element
2 Jan 24
A semiconductor light-receiving element (50) is a semiconductor light-receiving element in which a multi-plication layer (2), an electric-field control layer (3), a light absorption layer (4) and a window layer (5) are sequentially formed on a semiconductor substrate (1), and a p-type region (6) is formed in the window layer (5).
Ryota Takemura, Matobu Kikuchi
Filed: 5 Apr 19