Patents Assigned to Mitsubishi Electric Corporation
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Patent number: 11979261Abstract: A transmitting apparatus includes an analog transmitting unit that performs analog processing on a multiplex signal in which two or more signals are multiplexed and generates a transmission signal, and a signal multiplexing and learning unit that multiplexes the two or more signals with a neural network whose parameters have been adjusted based on the analog characteristics of the analog transmitting unit and constraints on the multiplex signal and generates the multiplex signal.Type: GrantFiled: April 4, 2022Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Manabu Takagi, Yasunori Noda
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Patent number: 11979080Abstract: An electric motor includes a shaft that is rotatably supported for rotation around a rotation axis, a rotor that is located outwardly of the shaft in a radial direction and rotates integrally with the shaft, a stator that faces the rotor in the radial direction, and a tubular frame that has an inner peripheral surface to which the stator is fixed. The electric motor further includes a groove included in (i) the inner peripheral surface of the frame or (ii) an outer peripheral surface of the stator, and an insulating member disposed in the groove.Type: GrantFiled: September 4, 2019Date of Patent: May 7, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Naoki Hayami, Tetsuya Sakurada
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Patent number: 11977642Abstract: An evaluation item generation unit (107) acquires a plurality of candidates for security evaluation items to be adopted to a plurality of apparatuses included in an information system. Further, the evaluation item generation unit (107) analyzes at least one of: whether or not each apparatus of the plurality of apparatuses has a communication path with an outside communication apparatus being an apparatus which is in the information system and performs communication with the outside of the information system; and whether or not there exists in each apparatus of the plurality of apparatuses, a security evaluation item an adoption of which is to be exempted due to an adoption of which to another apparatus in the information system, and selects for each apparatus of the plurality of apparatuses, a security evaluation item to be adopted, from the plurality of candidates for the security evaluation items based on an analysis result.Type: GrantFiled: April 12, 2021Date of Patent: May 7, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Mami Kawaguchi, Daisuke Suzuki
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Patent number: 11978812Abstract: A waveguide photodetector includes a first contact layer of a first conductivity type, a waveguide layer, and a second contact layer of a second conductivity type that are sequentially formed on the semiconductor substrate. The waveguide layer includes a first cladding layer of the first conductivity type disposed on a side of the first contact layer, a second cladding layer of the second conductivity type disposed on a side of the second contact layer, and the core layer disposed between the first cladding layer and the second cladding layer. The core layer includes a light absorption layer and an impurity-doped light absorption layer that has a higher concentration of a p-type impurity than that of the light absorption layer and is disposed on a side of a light incident face.Type: GrantFiled: February 26, 2020Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventor: Ryota Takemura
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Patent number: 11979182Abstract: A noise elimination device includes a noise elimination unit to generate a noise-eliminated spectrum by performing noise elimination on the basis of symmetry of noise superimposed on a reception signal spectrum.Type: GrantFiled: May 13, 2020Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Retsu Sugawara, Jun Takahashi, Yuji Matsuda
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Patent number: 11979335Abstract: A network controller is configured to perform, to a new slice request, resource allocation from a resource of unallocated resource information managed by a resource information management unit, and to reallocate the resource to an existing slice request so that an unallocated resource increases based on unallocated resource information managed by the resource information management unit.Type: GrantFiled: September 8, 2021Date of Patent: May 7, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takeshi Suehiro, Yukio Hirano, Kenichi Nakura, Akiko Iwasaki, Hiromu Sato
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Patent number: 11979117Abstract: A high frequency semiconductor amplifier according to the present disclosure includes: a transistor formed on a semiconductor substrate and including a gate electrode, a source electrode, and a drain electrode; a matching circuit for input-side fundamental wave matching of the transistor; a first inductor formed on the semiconductor substrate and having one end connected to the gate electrode of the transistor and the other end connected to the matching circuit; a capacitor formed on the semiconductor substrate and having one end being short-circuited; and a second inductor formed on the semiconductor substrate and having one end connected to the gate electrode of the transistor and the other end connected to the other end of the capacitor, wherein the second inductor resonates in series with the capacitor at second harmonic frequency, has a mutual inductance of subtractive polarity with the first inductor, and the first inductor and the second inductor form mutual inductive circuits for input-side second harType: GrantFiled: March 25, 2019Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventor: Yoshinobu Sasaki
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Patent number: 11977373Abstract: An abnormality diagnosis method for diagnosing an abnormality in operational state of a diagnosis subject includes creating a unit space from normal operation data of the diagnosis subject, the unit space serving as a reference for determining the operational state of the diagnosis subject, acquiring data having state quantities of a plurality of evaluation items from the diagnosis subject, calculating a Mahalanobis distance of the data acquired, using the unit space created, and determining an abnormality in the operational state of the diagnosis subject based on the Mahalanobis distance calculated. The creating a unit space includes creating a plurality of unit spaces having mutually different data lengths The calculating a Mahalanobis distance includes calculating a plurality of Mahalanobis distances using the plurality of unit spaces created. The determining an abnormality includes determining an abnormality based on the plurality of Mahalanobis distances calculated.Type: GrantFiled: April 28, 2020Date of Patent: May 7, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Misa Nozuki, Shinsuke Miki
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Patent number: 11977158Abstract: A laser radar device performs control to make a focus distance of transmission light equal to a measurement distance by switching a plurality of laser light sources that emit beams of oscillation light having wavelengths different from each other to switch emission directions of the transmission light while maintaining the focus position of optical antennas, and changing the wavelength of the beams of oscillation light according to the measurement distance.Type: GrantFiled: August 31, 2020Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Toshiyuki Ando, Jiro Suzuki, Eisuke Haraguchi
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Patent number: 11977157Abstract: The optical distance measurement device is configured to include an optical interference unit for separating the reflected light into a reflected light of a first polarized wave and a reflected light of a second polarized wave, extracting first and second components orthogonal to each other from an interference light of the reflected light of the first polarized wave and the reference light, and extracting third and fourth components orthogonal to each other from an interference light of the reflected light of the second polarized wave and the reference light, and a polarization rotation unit for acquiring one or more components of horizontal and vertical components of a polarized wave by rotating a polarization angle of a first complex signal having the first and second components and a polarization angle of a second complex signal having the third and fourth components, so that a distance calculation unit calculates, on the basis of the components acquired by the polarization rotation unit, a difference betType: GrantFiled: September 30, 2020Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Kiyoshi Onohara, Hiroki Goto
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Patent number: 11976872Abstract: An axial flow fan includes a hub driven to rotate and configured to serve as a rotation axis of the axial flow fan and a blade connected to the hub. The blade has a leading edge and a trailing edge. The trailing edge has an indentation indenting toward the leading edge. The indentation narrows from the trailing edge to the leading edge, and has an apex being a point closest to the leading edge from among the points constituting the indentation. The blade has, at the indentation, a maximum thickness portion at which a thickness of the blade is maximum, and which is positioned radially inside of the apex.Type: GrantFiled: June 25, 2019Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Takahide Tadokoro, Katsuyuki Yamamoto, Takashi Ikeda
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Patent number: 11975613Abstract: A variable-gauge train control apparatus for a variable-gauge train having a gauge variable in a gauge conversion section includes: a plurality of main motors that transmits driving force to axles and wheels; a plurality of inverters that outputs voltage to at least one of the main motors; and voltage control units that control the individual output voltages of the plurality of inverters. Each of the voltage control units corresponds to one of the inverters and, when at least one of the axles to be subjected to the driving force controlled by the corresponding one inverter is within the gauge conversion section, controls the speed of the associated main motors by using, as a speed command value, a train speed converted into a rotational frequency.Type: GrantFiled: September 11, 2018Date of Patent: May 7, 2024Assignees: MITSUBISHI ELECTRIC CORPORATION, KYUSHU RAILWAY COMPANYInventors: Kohei Fujitani, Shinsuke Kadoi, Tsuyoshi Morimitsu, Yuichi Mimura, Soichiro Watanabe
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Patent number: 11976838Abstract: An air-conditioning apparatus includes a casing provided with an air inlet through which air is sucked and an air outlet through which the air is blown out, heat exchangers being connected in parallel, and causing heat exchange to be performed between the air sucked from the air inlet and refrigerant, fans each sending the air to a corresponding one of the heat exchangers, and a controller. The controller controls the fans so that they have different rotational speeds.Type: GrantFiled: January 7, 2020Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Ryuichi Nagata, Masanori Sato, Yusuke Tashiro
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Patent number: 11976895Abstract: When, out of adjacent two in a stacking direction of heat transfer plates, one heat transfer plate provided in front of the other heat transfer plate is referred to as a first heat transfer plate and the other heat transfer plate provided in rear of the one heat transfer plate is referred to as a second heat transfer plate, a header portion of each of the first heat transfer plates and a corresponding header portion of each of the second heat transfer plates partly form a non-flow path region where the header portions are in contact with each other not to allow fluid to pass through the non-flow path region. A peripheral edge part in the non-flow path region of each of the first heat transfer plates includes a convex portion projecting upward, and a peripheral edge part in the non-flow path region of each of the second heat transfer plates includes a concave portion recessed downward.Type: GrantFiled: March 18, 2019Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventor: Kazunari Sawada
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Patent number: 11975616Abstract: An electric vehicle drive system includes: a reactor; and electric vehicle control apparatuses that control electric motors for driving an electric vehicle. Each of the electric vehicle control apparatuses includes: a capacitor that defines a filter circuit together with the reactor; an inverter circuit that supplies power to the corresponding one of the electric motors; and a control unit that controls the inverter circuit. The inverter circuit is housed in a housing together with the capacitor and the control unit. The reactor is connectable to each of the housings through an electric wire having any desired length. At least one of the electric wires connecting the reactor and the housings has a length of 2 meters or more.Type: GrantFiled: July 4, 2019Date of Patent: May 7, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hidetoshi Kitanaka, Tetsuo Sugahara, Hirokazu Takabayashi
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Patent number: 11976828Abstract: An outdoor unit of an air-conditioning apparatus in which indoor units are connected, includes: a housing forming an outer casing of the outdoor unit; a terminal block located at a side of the housing; and a conduit plate to be attached to the terminal block. The conduit plate includes: a terminal block cover to be attached to the housing to cover the terminal block, and having an opening portion formed at a lower portion of the terminal block cover; an outer casing cover to be attached to the terminal block cover to cover the opening portion of the terminal block cover, and having an opening portion at a side of the outer casing cover; and a cable connection cover to be attached to the side of the outer casing cover, and having attachment holes for connection of a conduit cable to be connected to the terminal block.Type: GrantFiled: March 30, 2020Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Kohei Sakata, Shigeru Hata
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Patent number: 11976657Abstract: A compressor includes a motor, a compression mechanism portion driven by the motor, and a rotation shaft connecting the motor and the compression mechanism portion. At least a part of the rotation shaft is composed of a material having a higher Young's modulus than that of cast iron, and having a higher thermal conductivity than that of cast iron.Type: GrantFiled: February 13, 2019Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventor: Kazuhiko Baba
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Patent number: D1026005Type: GrantFiled: September 3, 2021Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Hitoshi Yoshizawa, Tsutomu Matsubara, Masato Hirai, Takashi Yamauchi
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Patent number: D1026022Type: GrantFiled: July 7, 2022Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Hitoshi Yoshizawa, Masato Hirai, Tsutomu Matsubara
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Patent number: D1026025Type: GrantFiled: August 22, 2022Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Misato Miura, Hitoshi Yoshizawa, Masato Hirai, Mai Matsumoto