4584 patents
Page 18 of 230
Utility
Power converter and breaking mechanism
22 Aug 23
To provide a power converter and a breaking mechanism which can break a DC current and can suppress that a fused material scatter to other circuits at fusing, in the case where the breaking mechanism of excess current is formed by a circuit pattern of a circuit board.
Katsushi Nakada, Kenta Fujii
Filed: 27 Jun 22
Utility
Power conversion device with noise reduction
22 Aug 23
This power conversion device includes: a base; a control substrate; a first rectification element; a second rectification element; a smoothing reactor; an output filter circuit portion; a first main circuit wire; a second main circuit wire; and smoothing capacitors.
Wataru Aoki
Filed: 26 Jan 22
Utility
Power conversion device
22 Aug 23
A power conversion apparatus includes a base having a main surface to which switching elements of each of power converters are fixed, capacitor units, coupling members fixed to some of the capacitor units adjacent to each other, and fitting members fixed to the respective capacitor units and fixed to the base.
Takahiro Masuyama
Filed: 1 Apr 19
Utility
Wireless power feeding system and power reception device
22 Aug 23
A wireless power feeding system includes: a power transmission circuit portion for converting DC power supplied from a main power supply, to AC power, and for supplying the AC power to a power-transmission-side coil; input power control means for controlling the AC power to be supplied to the power-transmission-side coil; a power-reception-side coil which is magnetically coupled with the power-transmission-side coil and to which AC power is transmitted from the power-transmission-side coil through magnetic energy accumulated between the power-reception-side coil and the power-transmission-side coil; a power reception circuit including a rectifier for converting the AC power transmitted to the power-reception-side coil, to DC, and a power-reception-side DC/DC converter; and power reception circuit control means for controlling rectifier output voltage to be a maximum efficiency voltage at which power transmission efficiency becomes maximum.
Hidehito Yoshida, Takuya Nakanishi
Filed: 1 Apr 19
Utility
Laser device
22 Aug 23
A laser device includes element circuits, a front optical system, and a reflective optical system.
Eisuke Haraguchi, Toshiyuki Ando
Filed: 26 Oct 21
Utility
Short-circuit generator
22 Aug 23
A short-circuit generator is a generator in which stator slots provided with windings of a stator placed therein each have a depth in a radial direction perpendicular to a rotor central axis whose ratio divided by a width of the stator slot in a direction perpendicular both to the radial direction and a direction of the rotor central axis, is less than three.
Haruyuki Kometani, Ryoji Miyatake, Naoyoshi Mori, Yuta Saito
Filed: 16 Jul 19
Utility
System and method for protecting power semiconductor of half bridge converter
22 Aug 23
A current going through the first power semiconductor is sensed by a first and a second current derivative sensing means, the current going through the second semiconductor is sensed by a third and a fourth current derivative sensing means, when the current going through the first power semiconductor increases, the first current derivative means providing a positive voltage and the second current derivative means providing an opposite negative voltage, when the current going through the second power semiconductor increases, the third current derivative means providing a positive voltage and the fourth current derivative means providing an opposite voltage and the system reduces the voltage on the gate of the first power semiconductor if the first and third current derivative means provide voltages of same sign and reduces the voltage on the gate of the second power semiconductor if the second and fourth current derivative means provide voltages of same sign.
Julien Morand, Stefan Mollov
Filed: 14 Nov 19
Utility
Electrical power conversion apparatus
22 Aug 23
An electrical power conversion apparatus is obtained in which its devices constituting a DC/DC converter are not required to be large-sized, and a DC capacitor connected between an AC/DC converter and the DC/DC converter can be small-sized.
Kei Hayase
Filed: 29 Sep 21
Utility
Optical transmission device and likelihood generation circuit
22 Aug 23
Provided is an optical transmission device including: a symbol demapping unit; a likelihood generation circuit configured to generate likelihoods relating to the reception signal; and an error correction decoding unit configured to execute soft decision decoding.
Yoshiaki Konishi, Kenji Ishii, Hideo Yoshida, Takashi Sugihara, Tsuyoshi Yoshida
Filed: 18 Aug 21
Utility
Motor controller
22 Aug 23
To provide a motor controller which can suppress occurrence of a torque difference between systems, even if a DC voltage difference occurs between systems, in the case where each system is provided with a DC power source.
Jun Kitagawa, Tatsuya Mori, Hiroko Ikeda, Haruna Koyama, Kenta Kubo
Filed: 27 Nov 19
Utility
Magnetic particle imaging system and magnetic particle imaging method
22 Aug 23
A magnetic particle imaging system includes a field free region generator and an excited magnetic field generator.
Kazuki Yamauchi, Chungwei Lin
Filed: 24 Sep 21
Utility
Laser system, learning device, and inference device
22 Aug 23
A laser system for amplifying laser light generated from a laser light source and emitting the laser light includes an optical element in an optical path of the laser light and transmits the laser light, a control device to control power to be supplied to the laser system, an imager to capture an image of the optical element, and an image processing circuitry to process the image of the optical element captured by the imager.
Takuya Kawashima, Sei Ebihara, Tatsuya Yamamoto, Masashi Naruse, Ken Hamachiyo
Filed: 15 Jul 20
Utility
Numerical control system and motor drive controller
22 Aug 23
A numerical control system according to the present invention controls machine drive systems included in a machine tool that performs machining using a tool, according to a numerical control program, and includes a coordinate transformation unit that acquires a disturbance force or a disturbance torque applied to each machine drive system, and coordinate-transforms the disturbance force or the disturbance torque into a tool reference coordinate system for output, and an identification unit that calculates cutting process parameters that determine characteristics of a cutting process model and dynamic characteristic parameters that determine characteristics of a dynamics model of the machine tool, using the disturbance force or the disturbance torque output from the coordinate transformation unit, states of the machine drive systems, predetermined equation models, and cutting conditions.
Kazuki Takahei, Ryosuke Ikeda, Norikazu Suzuki, Shoya Ohno
Filed: 30 Dec 22
Utility
Touch panel device, operation identification method, and storage medium storing operation identification program
15 Aug 23
A touch panel device includes processing circuitry to generate coordinate information indicating a position of a touch operation; to generate a pressing value corresponding to pressing force applied to an operation surface of a touch panel; to classify the positions of touch operations included in operation logs each being data including the coordinate information and information indicating the pressing value into groups and to determine group regions respectively corresponding to the groups; to determine a threshold value of the pressing value in each of the group regions based on the operation logs; and to judge that the touch operation is a depressing operation with pressing force if the pressing value is greater than or equal to the threshold value and to judge that the touch operation is a normal touch operation other than the depressing operation if the pressing value is less than the threshold value.
Sohei Osawa, Yuichi Sasaki, Akihito Yamamoto, Kentaro Mori
Filed: 1 Feb 22
Utility
Controller and air conditioning system based on user information, user registration information and positional information of temperature detected by sensor terminal near user
15 Aug 23
A controller includes: a processor and a memory.
Satoshi Nakano
Filed: 13 Jul 18
Utility
Method of renewing passenger conveyor
15 Aug 23
There is provided a method of renewing a passenger conveyor that is capable of preventing the passenger conveyor from being unavailable for a long time period when the passenger conveyor is renewed in a stepped manner.
Yukiyasu Nagao
Filed: 6 Aug 19
Utility
Update control device, update control system, and update control method
15 Aug 23
An update control device determines whether or not an update of an update target ECU is to be completed within stop time from when a vehicle temporarily stops until the vehicle starts traveling, when a response indicating that the update can be executed is given from an in-vehicle ECU having dependency with the update target in-vehicle ECU.
Masahiro Nakatsukasa, Ryo Mizobe
Filed: 29 Jun 18
Utility
Frequency detection circuit
15 Aug 23
A frequency detection circuit includes: a first signal source for outputting a first clock signal; a second signal source for outputting a second clock signal having the same frequency as but a different phase from those of the first clock signal; a first sample hold circuit for undersampling a reception signal using the first clock signal; a second sample hold circuit for undersampling the reception signal using the second clock signal; and a frequency calculating circuit for calculating the frequency of the reception signal using a phase difference between output signals of the first sample hold circuit and the second sample hold circuit.
Osamu Wada, Kenichi Tajima
Filed: 18 Jun 21
Utility
Transmission path design assistance system, transmission path design assistance method, and computer readable medium storing transmission path design assistance program
15 Aug 23
A transmission path design assistance system assisting in the design of a transmission path with different reflection specification values for each frequency is obtained.
Koji Shibuya, Tetsu Owada, Keitaro Yamagishi
Filed: 24 Jun 21
Utility
Semiconductor power module with temperature sensors and shaped top plate to equalize current paths
15 Aug 23
An object of the present disclosure is to suppress variation in currents flowing through semiconductor elements and thereby to achieve size reduction of the semiconductor elements.
Masakazu Tani, Shuichi Takahama
Filed: 15 Sep 20