Patents by Inventor Masayuki Nakazawa

Masayuki Nakazawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220364380
    Abstract: There is provided a conveying device that can support a car weight with a mechanism lighter in weight. A driving device (6) of a conveying device that lifts and lowers a loading-weight support along a rail (3) includes a wheel unit (13) and a link (14). The wheel unit (13) drives to rotate a driving wheel (15) in contact with a guide surface (11) to lift and lower the loading-weight support. The link (14) includes a first joint (17) connected to the wheel unit (13) and a second joint (18) rotatably supported by the loading-weight support. The second joint (18) is arranged in a position further apart from the guide surface (11) than the first joint (17), and above the first joint (17). The link (14) is arranged such that a straight line connecting the first joint (17) and the second joint (18) is tilted smaller than 45 degrees.
    Type: Application
    Filed: August 27, 2019
    Publication date: November 17, 2022
    Applicants: Mitsubishi Electric Corporation, Tokyo Institute of Technology
    Inventors: Yusuke SUGAHARA, Yukio TAKEDA, Daisuke MATSUURA, Takahiro ISHII, Takeshi MATSUMOTO, Masayuki KAKIO, Daisuke NAKAZAWA
  • Publication number: 20220353770
    Abstract: When being connected to a macro cell (S-MeNB) and a small cell (SeNB), a user equipment device performs a pre-handover process of disconnecting the connection with the SeNB before a handover process of switching a macro cell connected with the UE from the macro cell (S-MeNB) that is a moving source to a macro cell (T-MeNB) that is a moving destination along with moving of the UE, and after the handover process, performs a post-handover process of reestablishing the connection with the SeNB.
    Type: Application
    Filed: July 13, 2022
    Publication date: November 3, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takuya OHARA, Taisei Suemitsu, Mitsuru Mochizuki, Kuniyuki Suzuki, Masayuki Nakazawa, Daisuke Hiramatsu
  • Publication number: 20220311553
    Abstract: Provided is a communication system capable of suppressing decrease in a transmission rate. An eNB communicates with a UE using a self-contained subframe. The self-contained subframe includes a downlink signal to be transmitted from the eNB to the UE, and an uplink signal to be transmitted from the UE to the eNB in response to the downlink signal. The uplink signal has a structure including an uplink control signal indicating information for controlling transmission of the uplink signal, and uplink user data to be transmitted before and after the uplink control signal. The eNB notifies the UE of a structure of the uplink signal. The eNB may predetermine scheduling for retransmission to retransmit the downlink signal, before performing initial transmission of the downlink signal.
    Type: Application
    Filed: June 13, 2022
    Publication date: September 29, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Masayuki NAKAZAWA, Fumihiro HASEGAWA
  • Publication number: 20220287003
    Abstract: A technology that enables prompt NW connection is provided. A communication system includes: a communication terminal; and a plurality of networks configured to perform radio communication with the communication terminal. The communication terminal determines whether or not there is paging causing collision among a plurality of pagings respectively transmitted to the communication terminal from the plurality of networks. When the communication terminal detects the collision of the paging, the communication terminal notifies at least one of the plurality of networks that transmits the paging causing the collision of the paging about the collision of the paging.
    Type: Application
    Filed: August 27, 2020
    Publication date: September 8, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Masayuki NAKAZAWA, Naofumi IWAYAMA
  • Publication number: 20220256442
    Abstract: A closed subscriber group (CSG) cell is a cell that allows use of subscribers. In order to receive the service by the CSG cell, a CSG-ID is required to be notified to a user equipment, which cannot be obtained in a situation outside the reach of radio waves from a non-CSG cell. In a mobile communication system including base stations respectively provided to a CSG cell and a non-CSG cell in which access is made to the CSG cell with the use of a CSG-ID issued in a case where use of the CSG cell is allowed, the base station provided in the CSG cell refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network, and the core network determines whether the user equipment is allowed to use the CSG cell and, in the case where the use is allowed, transmits a signal for allowing assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the use of the CSG-ID.
    Type: Application
    Filed: April 27, 2022
    Publication date: August 11, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Miho MAEDA, Mitsuru MOCHIZUKI, Taiga SAEGUSA, Yasushi IWANE, Yuji KAKEHI, Masayuki NAKAZAWA, Taisei SUEMITSU
  • Publication number: 20220248371
    Abstract: In a communication system, a plurality of base stations includes an MeNB being a first base station, and a plurality of SeNBs to be connected to the MeNB. At least one of control plane data about control of communication and user plane data about a user is transmitted to and received from a user equipment (UE) via the first base station being the MeNB. The control plane data and the user plane data are contained in information provided by a core network about communication with the UE. The communication system can simplify processing of at least one of control plane data and user plane data when a communication terminal device communicates with a plurality of base station devices.
    Type: Application
    Filed: April 19, 2022
    Publication date: August 4, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Hideo UMEHARA, Kuniyuki SUZUKI
  • Patent number: 11350345
    Abstract: A closed subscriber group (CSG) cell is a cell that allows use of subscribers. In order to receive the service by the CSG cell, a CSG-ID is required to be notified to a user equipment, which cannot be obtained in a situation outside the reach of radio waves from a non-CSG cell. In a mobile communication system including base stations respectively provided to a CSG cell and a non-CSG cell in which access is made to the CSG cell with the use of a CSG-ID issued in a case where use of the CSG cell is allowed, the base station provided in the CSG cell refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network, and the core network determines whether the user equipment is allowed to use the CSG cell and, in the case where the use is allowed, transmits a signal for allowing assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the use of the CSG-ID.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: May 31, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Miho Maeda, Mitsuru Mochizuki, Taiga Saegusa, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
  • Patent number: 11343798
    Abstract: In a communication system, a plurality of base stations includes an MeNB being a first base station, and a plurality of SeNBs to be connected to the MeNB. At least one of control plane data about control of communication and user plane data about a user is transmitted to and received from a user equipment (UE) via the first base station being the MeNB. The control plane data and the user plane data are contained in information provided by a core network about communication with the UE. The communication system can simplify processing of at least one of control plane data and user plane data when a communication terminal device communicates with a plurality of base station devices.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: May 24, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masayuki Nakazawa, Mitsuru Mochizuki, Hideo Umehara, Kuniyuki Suzuki
  • Publication number: 20220103313
    Abstract: Provided is a technology capable of securing communication quality without providing an additional function such as phase correction. A base station device and a communication terminal device when operating as a transmitting device rotate inverse fast Fourier transform (IFFT) output, and copy a last portion of the rotated IFFT output to a head of the rotated IFFT output as a cyclic prefix (CP) to thereby generate a transmission signal so that there is no phase rotation at a head of a demodulation reception window set in a receiving device.
    Type: Application
    Filed: December 14, 2021
    Publication date: March 31, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kuniyuki SUZUKI, Masayuki NAKAZAWA
  • Patent number: 11269088
    Abstract: A radiation detector (5) is configured such that weighting of detection signals of photodetectors (52) on an end portion side of the plurality of photodetectors (52) is set to be greater than weighting of detection signals of photodetectors (52) on a central portion side of the plurality of photodetectors (52).
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: March 8, 2022
    Assignee: Shimadzu Corporation
    Inventors: Masayuki Nakazawa, Tomoaki Tsuda
  • Patent number: 11201703
    Abstract: Provided is a technology capable of securing communication quality without providing an additional function such as phase correction. A base station device and a communication terminal device when operating as a transmitting device rotate inverse fast Fourier transform (IFFT) output, and copy a last portion of the rotated IFFT output to a head of the rotated IFFT output as a cyclic prefix (CP) to thereby generate a transmission signal so that there is no phase rotation at a head of a demodulation reception window set in a receiving device.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: December 14, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kuniyuki Suzuki, Masayuki Nakazawa
  • Publication number: 20210367685
    Abstract: A signal is transmitted and received between a base station device and a communication terminal device that are included in a communication system, through a multi-element antenna including a plurality of antenna elements. At least one of the base station device and the communication terminal device includes a PHY processing unit that is a calibration unit that performs calibration of phases and amplitudes of beams formed by the antenna elements when the signal is transmitted and received. The PHY processing unit obtains a correction value for the phases and the amplitudes of the beams in the respective antenna elements so that the phases and the amplitudes of the beams are identical among the antenna elements, and performs the calibration based on the obtained correction value.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hideki MORISHIGE, Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Yoshitaka HARA, Kuniyuki SUZUKI
  • Patent number: 11128389
    Abstract: A signal is transmitted and received between a base station device and a communication terminal device that are included in a communication system, through a multi-element antenna including a plurality of antenna elements. At least one of the base station device and the communication terminal device includes a PHY processing unit that is a calibration unit that performs calibration of phases and amplitudes of beams formed by the antenna elements when the signal is transmitted and received. The PHY processing unit obtains a correction value for the phases and the amplitudes of the beams in the respective antenna elements so that the phases and the amplitudes of the beams are identical among the antenna elements, and performs the calibration based on the obtained correction value.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: September 21, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideki Morishige, Masayuki Nakazawa, Mitsuru Mochizuki, Yoshitaka Hara, Kuniyuki Suzuki
  • Publication number: 20210258943
    Abstract: A base station device is configured to set, for each communication terminal device, a radio format for signals transmitted to and received from the communication terminal device. The radio format is set for each communication terminal device in accordance with, for example, a type of use including a moving speed of the communication terminal device. The base station device may be configured to change the radio format for the communication terminal device based on the information about a change in the environment of a radio communication between the communication terminal device and the base station device and a change including the communication terminal device's location. The signals transmitted and received between the base station device and the communication terminal device include radio formats in which at least one of a length of a symbol of the signal and a length of a cyclic prefix in an OFDM scheme differs.
    Type: Application
    Filed: April 7, 2021
    Publication date: August 19, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masayuki NAKAZAWA, Kuniyuki SUZUKI, Mitsuru MOCHIZUKI, Koji ONO, Takayuki NONAMI, Naohito TOMOE, Fumiki HASEGAWA
  • Patent number: 11092697
    Abstract: A radiation detection device (300) is used in a nuclear medicine diagnosis apparatus, and includes a plurality of scintillators (44), a semiconductor light-receiving device (SiPM), a position detection circuit (214), and a timing detection circuit (216). Each of the scintillators converts a gamma ray emitted from a subject (15) into fluorescence. The semiconductor light-receiving device is provided corresponding to each of the scintillators and converts the fluorescence converted by a corresponding one of the scintillators into an electrical signal. The position detection circuit specifies a gamma ray detection position in the scintillators based on the electrical signal from the semiconductor light-receiving device. The timing detection circuit is connected to an anode of the semiconductor light-receiving device, and specifies time information corresponding to a time of occurrence of an event in which the gamma ray is detected.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: August 17, 2021
    Assignee: Shimadzu Corporation
    Inventors: Masayuki Nakazawa, Tetsuo Furumiya
  • Publication number: 20210176815
    Abstract: A narrow-bandwidth terminal device performs radio communication at a bandwidth narrower than a system bandwidth. The narrow-bandwidth terminal device in an idle state camps on a cell, and performs discontinuous reception of a signal transmitted from the cell. The terminal device also determines a reception condition of the signal, for example, whether the signal can be received. When it is determined that the signal cannot be received, the narrow-bandwidth terminal device moves out of a coverage area of the cell while continuing to perform the discontinuous reception. When it is determined that a discontinuous reception timer has been completed, the narrow-bandwidth terminal device continues to perform the discontinuous reception.
    Type: Application
    Filed: February 18, 2021
    Publication date: June 10, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Masayuki NAKAZAWA, Noriyuki FUKUI, Haruka NOZAWA
  • Patent number: 11006427
    Abstract: A base station device is configured to set, for each communication terminal device, a radio format for signals transmitted to and received from the communication terminal device. The radio format is set for each communication terminal device in accordance with, for example, a type of use including a moving speed of the communication terminal device. The base station device may be configured to change the radio format for the communication terminal device based on the information about a change in the environment of a radio communication between the communication terminal device and the base station device and a change including the communication terminal device's location. The signals transmitted and received between the base station device and the communication terminal device include radio formats in which at least one of a length of a symbol of the signal and a length of a cyclic prefix in an OFDM scheme differs.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masayuki Nakazawa, Kuniyuki Suzuki, Mitsuru Mochizuki, Koji Ono, Takayuki Nonami, Naohito Tomoe, Fumiki Hasegawa
  • Patent number: 10959283
    Abstract: A narrow-bandwidth terminal device performs radio communication at a bandwidth narrower than a system bandwidth. The narrow-bandwidth terminal device in an idle state camps on a cell, and performs discontinuous reception of a signal transmitted from the cell. The terminal device also determines a reception condition of the signal, for example, whether the signal can be received. When it is determined that the signal cannot be received, the narrow-bandwidth terminal device moves out of a coverage area of the cell while continuing to perform the discontinuous reception. When it is determined that a discontinuous reception timer has been completed, the narrow-bandwidth terminal device continues to perform the discontinuous reception.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: March 23, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsuru Mochizuki, Kuniyuki Suzuki, Masayuki Nakazawa, Noriyuki Fukui, Haruka Nozawa
  • Publication number: 20210007077
    Abstract: In a communication system, a plurality of base stations includes an MeNB being a first base station, and a plurality of SeNBs to be connected to the MeNB. At least one of control plane data about control of communication and user plane data about a user is transmitted to and received from a user equipment (UE) via the first base station being the MeNB. The control plane data and the user plane data are contained in information provided by a core network about communication with the UE. The communication system can simplify processing of at least one of control plane data and user plane data when a communication terminal device communicates with a plurality of base station devices.
    Type: Application
    Filed: September 23, 2020
    Publication date: January 7, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Hideo UMEHARA, Kuniyuki SUZUKI
  • Publication number: 20200412493
    Abstract: Provided is a communication system capable of suppressing decrease in a transmission rate. An eNB communicates with a UE using a self-contained subframe. The self-contained subframe includes a downlink signal to be transmitted from the eNB to the UE, and an uplink signal to be transmitted from the UE to the eNB in response to the downlink signal. The uplink signal has a structure including an uplink control signal indicating information for controlling transmission of the uplink signal, and uplink user data to be transmitted before and after the uplink control signal. The eNB notifies the UE of a structure of the uplink signal. The eNB may predetermine scheduling for retransmission to retransmit the downlink signal, before performing initial transmission of the downlink signal.
    Type: Application
    Filed: September 14, 2020
    Publication date: December 31, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Masayuki NAKAZAWA, Fumihiro HASEGAWA