Patents Assigned to Mitsubishi Electric Corporation
  • Patent number: 10392039
    Abstract: To provide a wireless train control system that can perform a stable operation. The wireless train control system controls a wireless-control compliant train following a wireless-control noncompliant train by a ground control device. A stop limit point of the wireless-control compliant train is set by a track circuit in which a tail end position of the wireless-control noncompliant train is present. By using a track-circuit state signal indicating that the track circuit is turned on or turned off and a time-element-added track-circuit state signal indicating turn-off at a timing delayed by a set time after the track-circuit state signal has indicated turn-off, when the track-circuit state signal indicates turn-off and the time-element-added track-circuit state signal indicates turn-on, it is determined that turn-off indicated by the track-circuit state signal is caused by the wireless-control compliant train that is a train itself being present, and the stop limit point is not updated.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi Asuka, Atsushi Takami
  • Patent number: 10397444
    Abstract: An image display apparatus includes: a light source unit including three or more light sources, combining lights from the light sources and emitting the combined light; a wavelength detector that detects, for each light source, wavelength information indicating the wavelength of light from the light source; a color value determiner that determines, for each light source, from the wavelength information, a color value indicating a color of light from the light source in a predetermined color space; a correction value determiner that determines, based on the color values, a correction value for correcting a ratio between the intensities of lights from the light sources so that the color of the combined light is a color to be displayed; and a driver that drives the light sources so that the ratio between the intensities of lights from the light sources is a ratio corrected based on the correction value.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomo Kishigami, Nobuo Takeshita
  • Patent number: 10393419
    Abstract: A controller, at least during the heating operation, controls the opening degree of a second expansion device and/or a third expansion device based on a discharge refrigerant temperature detected by a discharge refrigerant temperature detector, or a value computed using the discharge refrigerant temperature, and causes refrigerant having a quality equal to or greater than 0.9 and less than or equal to 0.99 to be suctioned into a compressor.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Katsuhiro Ishimura, Koji Yamashita, Shinichi Wakamoto, Naofumi Takenaka, Fumihiko Ishizono
  • Patent number: 10393052
    Abstract: A target injector valve opening period is calculated based on a target fuel injection amount, and an injector (2) is controlled by a current supply control unit (51) in accordance with an injector drive period acquired based on the target injector valve opening period. An actual valve closing delay period is calculated based on a drive waveform of the injector (2) at this time, and a difference between an actual valve closing delay period and a valve closing delay period calculated from a target injector valve opening period is learned. Then, the injector drive period is corrected by feedback control using a result of this learning.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tomokazu Makino, Toru Tanaka, Osamu Maeda, Hideki Hagari, Hiroyuki Fukuyama
  • Patent number: 10397922
    Abstract: A scheduler allocates time-frequency resources of a predefined time period for transmitting latency-constrained and non latency-constrained data packets over a frequency selective channel. The scheduler: performs assignment of time-frequency resources for transmitting non latency-constrained data; then, possibly performs a revision of the assignment so that time-frequency resources are allocated to latency-constrained data packets instead of non latency-constrained data packets, said revision being performed by minimizing cost impact of the revision on a global performance metric related to the transmissions of said non latency-constrained data packets; and, allocates the time-frequency resources as assigned to the non latency-constrained data packets that did not incur the assignment revision, whereas the latency-constrained data packets that incurred the assignment revision are put aside for later scheduling.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Nicolas Gresset, Herve Bonneville
  • Patent number: 10393413
    Abstract: A load unit includes a water circuit chamber configured to accommodate at least a part of a water circuit configured to allow water to flow therethrough, a fan, an air inlet formed at a height positioned different from that of the air inlet and configured to suck indoor air therethrough, an air outlet configured to blow indoors the air sucked through the air inlet, and an air passage formed between the air inlet and the air outlet so as to be isolated from the water circuit chamber. A load-side heat exchanger is provided in the air passage.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasuhiro Suzuki, Yoshihiro Takahashi, Takao Komai, Akira Maeda, Mitsuru Kawashima
  • Patent number: 10396690
    Abstract: An electric motor includes a stator, a rotor provided to be rotatable with respect to the stator, and a driving circuit board including a power IC applying a driving voltage to the stator, a Hall IC detecting a rotation position of the rotor, and a control IC adjusting a phase of the driving voltage in accordance with a magnetic-pole-position signal from the Hall IC and rotation speed information calculated on the basis of the magnetic-pole-position signal. The Hall IC is provided at a position at which an advance angle is larger than zero when a rotation speed of the rotor is zero.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Junichiro Oya, Tomoaki Oikawa, Mineo Yamamoto, Hiroyuki Ishii, Hiroki Aso, Yuto Urabe, Kazunori Hatakeyama, Takuya Shimomugi
  • Patent number: 10396614
    Abstract: A stator of a rotating electrical machine includes: a plurality of annularly arranged stator cores; a stator winding attached to slots of the stator cores; and a shell (22) that retains the stator cores. In the stator of the rotating electrical machine, the ends of coil terminal wires (19), (20) on the innermost circumferential side and the outermost circumferential side of each slot are oriented in the axial direction of the stator; and side surfaces of the ends of the terminal wires (19), (20) are brought into contact with each other and are welded above the coil end (21) of the stator winding.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ryuichi Kitora, Masashi Nakamura, Masaya Inoue, Shogo Okamoto, Atsushi Sakaue, Tatsuro Hino
  • Patent number: 10396863
    Abstract: For determining parameters for configuring a regularized zero-forcing precoder aiming at being applied for transmitting data from a plurality of transmitters to a plurality of receivers via a MIMO transmission channel in a wireless communication system, and more particularly in a scope of massive MIMO approach, a first phase comprises: obtaining long-term statistics about observations of the MIMO transmission channel, and obtaining a power scaling factors aiming at meeting a power constraint P, by solving an optimization problem as a function of a signal to noise ratio asymptotic expression from the standpoint of each receiver. Then, a second phase comprises: obtaining an estimation of the MIMO transmission channel, and configuring the regularized zero-forcing precoder using the power scaling factors determined in the first phase as well as the obtained estimation of the MIMO transmission channel.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Qianrui Li, Nicolas Gresset, David Gesbert, Paul De Kerret
  • Patent number: 10396618
    Abstract: In a rotating electric machine with shaft-seal devices mounted thereon, an object to provide them is to uniformize a temperature distribution of a sealing ring with a simple structure. The rotating electric machine with the shaft-seal devices mounted thereon includes a rotor having a shaft; a stator disposed in a circumferential surrounding of the rotor; a sealing ring having a plurality of through holes formed therein, being disposed in a circumferential surrounding of the shaft; a gland seal having an oil supply opening therein, for enclosing a circumferential surrounding of the sealing ring; a partition plate disposed between the sealing ring and the gland seal; and a housing on which the gland seal is fixed, for accommodating the rotor and the stator.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Kawashima, Shingo Kingetsu
  • Patent number: 10393393
    Abstract: A dehumidifier includes a compressor, a flow path switch, a first heat exchanger, a pressure-reducing device, a second heat exchanger, a moisture adsorption member that is arranged between the first heat exchanger and the second heat exchanger, a fan, a storage unit configured to store an operation time map, and a temperature and humidity detection unit. The controller controls the flow path switch that switches a first operation mode to adsorb moisture by the moisture adsorption member and a second operation mode to desorb moisture adsorbed by the moisture adsorption member. The controller acquires a first time and a second time corresponding to the temperature and humidity detected by the temperature and humidity detection unit from the operation time map, and controls the flow path switch in accordance with the acquired first time and second time.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keizo Fukuhara, Keigo Okajima, Manabu Tanaka
  • Patent number: 10393879
    Abstract: A correction data creation unit receives a value of an error used in satellite positioning at a first time interval, and receives a correction value of the error at a second time interval that is a time interval 1/n (n is an integer of two or larger) time interval of the first time interval. The correction data creation unit also corrects the value of the error at the second time interval by using the correction value.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masayuki Saito, Masakazu Miya, Yuki Sato, Seigo Fujita, Kazuhiro Terao
  • Patent number: 10394395
    Abstract: Detection column wires and detection row wires are configured of thin wires made of a conductive material having light reflectivity, such as a metal or alloy including silver and aluminum. A predetermined plural number of detection column wires are electrically connected to form a plurality of column-direction bundle wires. A predetermined plural number of detection row wires are electrically connected to form a plurality of row-direction bundle wires. A reflected-light distribution pattern is further provided. When viewed in a direction vertical to the surface of the touch screen, the reflected-light distribution pattern includes a curved portion, and the normal lines of the curved portion head for all directions.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takahiro Nishioka, Naoki Nakagawa, Masafumi Agari, Takeshi Ono, Seiichiro Mori
  • Patent number: 10396678
    Abstract: In a multilevel converter, three first rectifying elements are respectively connected between three arms and a negative voltage terminal. Three second rectifying elements are respectively connected to the three first rectifying elements in antiparallel. During a normal operation, current flows in the three first rectifying elements and the three second rectifying elements. When a short circuit accident occurs between two DC power transmission lines, the three first rectifying elements are brought into the non-conductive state, thereby interrupting and quickly attenuating inter-arm direct current flowing in four arms and the like.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryosuke Uda, Kenichi Kuroda, Masashi Kitayama
  • Patent number: 10395855
    Abstract: A switch includes a first contact and a second contact that are placed along an operating shaft and can reciprocate with respect to each other. An end of the second contact opposite to an end thereof on the side of the first contact is housed in a housing space of a housing box. The pressure in the housing space is increased due to an arc generated when the first contact approaches the second contact. The increased in the pressure causes the second contact to move toward the first contact.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masato Kubota, Tomotaka Yano
  • Publication number: 20190259681
    Abstract: A semiconductor module includes: a semiconductor element; a first lead frame including a first portion on which the semiconductor element is mounted; a sealing member sealing the semiconductor element and the first portion; and a heat dissipation member which is integrated with the sealing member and dissipates heat generated in the semiconductor element. The heat dissipation member is insulated from the semiconductor element and the first portion by the sealing member. Therefore, the semiconductor module that is applicable to vertical semiconductor elements and ensures electrical insulation between the semiconductor element and the heat dissipation member when implementing the semiconductor module onto a circuit board, can be provided.
    Type: Application
    Filed: November 15, 2016
    Publication date: August 22, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Maki HASEGAWA, Shuhei YOKOYAMA, Shogo SHIBATA, Shigeru MORI, Toru IWAGAMI
  • Publication number: 20190257812
    Abstract: The present invention is directed to a method of estimating an overheating temperature of an oil-immersed electric appliance in which ester oil is used as insulating oil. The overheating temperature is estimated based on a first concentration ratio representing a concentration ratio between two types of gas components contained in the ester oil and a second concentration ratio representing a concentration ratio between other two types of gas components contained in the ester oil. The first concentration ratio and the second concentration ratio are selected from a concentration ratio between acetylene and ethane, a concentration ratio between acetylene and hydrogen, a concentration ratio between acetylene and methane, and a concentration ratio between acetylene and ethylene.
    Type: Application
    Filed: June 15, 2016
    Publication date: August 22, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryota KURIYAMA, Fukutaro KATO, Shiki HAYAMIZU, Kota MIZUNO
  • Publication number: 20190261155
    Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.
    Type: Application
    Filed: April 30, 2019
    Publication date: August 22, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Futoshi KATADA, Hirochika HIRAKI
  • Publication number: 20190258877
    Abstract: Provided is an object detection device including: a detection unit configured to detect objects for every detection period to output detection information containing a reliability for each of the detected objects; a determination unit configured to: increment a detection count for each of the objects; calculate, for each of the objects, a sum of latest N reliabilities in the detection period; and determine, as a normally recognized object, an object for which the sum is equal to or larger than a first threshold value, which is set in advance depending on the detection count; and a control unit configured to output, as normally detected object information, detection information on the normally recognized object.
    Type: Application
    Filed: November 8, 2016
    Publication date: August 22, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Koji IIDA, Noritaka KOKIDO
  • Publication number: 20190260137
    Abstract: Waveguide slot array antennas each having slots, that transmit or receive electromagnetic waves and that are formed in a front surface of a waveguide and waveguide slot array antennas each having slots that transmit or receive electromagnetic waves and that are formed in a front surface of a waveguide, and the waveguide slot array antennas and the waveguide slot array antennas are alternately arranged, the waveguide is a ridge waveguide having a ridge formed inside the waveguide, and the waveguide is a ridge waveguide having ridges, formed inside the waveguide.
    Type: Application
    Filed: August 10, 2016
    Publication date: August 22, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hikaru WATANABE, Takashi MARUYAMA, Masataka OTSUKA, Yu USHIJIMA, Kazunari KIHIRA