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: 20190222364
    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.
    Type: Application
    Filed: August 3, 2017
    Publication date: July 18, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Masayuki NAKAZAWA, Fumihiro HASEGAWA
  • Patent number: 10348422
    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: April 6, 2016
    Date of Patent: July 9, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideki Morishige, Masayuki Nakazawa, Mitsuru Mochizuki, Yoshitaka Hara, Kuniyuki Suzuki
  • Patent number: 10338235
    Abstract: The radiation detector according to the present invention is always able to calculate the summation value accurately, regardless of the intensity of the fluorescent emission that is produced in the scintillator. That is, if the method for calculating the summation value set forth in the present invention is used, then the number of instantaneous intensity data d that are added together each time a fluorescent emission is produced in the scintillator will be larger the greater the intensity of the fluorescent emission. Doing this prevents the intensity of an intense fluorescent emission from being understated. Moreover, the summing portion in the present invention is able to calculate the summation value with high reliability. This is because the instantaneous intensity data used in calculating the summation value are above a threshold value a, causing the signal-to-noise ratios to be adequately high and the reliability to be high as well.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: July 2, 2019
    Assignee: SHIMADZU CORPORATION
    Inventor: Masayuki Nakazawa
  • Patent number: 10304859
    Abstract: The stability of a step of processing a wiring formed using copper, aluminum, gold, silver, molybdenum, or the like is increased. Moreover, the concentration of impurities in a semiconductor film is reduced. Moreover, the electrical characteristics of a semiconductor device are improved. In a transistor including an oxide semiconductor film, an oxide film in contact with the oxide semiconductor film, and a pair of conductive films being in contact with the oxide film and including copper, aluminum, gold, silver, molybdenum, or the like, the oxide film has a plurality of crystal parts and has c-axis alignment in the crystal parts, and the c-axes are aligned in a direction parallel to a normal vector of a top surface of the oxide semiconductor film or the oxide film.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: May 28, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Junichi Koezuka, Yasutaka Nakazawa, Yukinori Shima, Masami Jintyou, Masayuki Sakakura, Motoki Nakashima
  • Patent number: 10165482
    Abstract: A mobile communication system includes a CSG cell which is accessible by a CSG member, a hybrid cell which is the CSG cell where a non-CSG member is also allowed access at the same time, and a mobile terminal which is subscribed as the CSG member and connected to the CSG cell or the hybrid cell as the CSG member. Even in a case in which a subscription time period has expired, the mobile communication system enables the mobile terminal to continue the connection. When the subscription time period for the CSG member expires, in case of the mobile terminal's connection to the CSG cell, the CSG cell initiates a handover, in case of the mobile terminal's connection to the hybrid cell, the hybrid cell changes treatment for the mobile terminal from treating the mobile terminal as the CSG member to treating the mobile terminal as the non-CSG member.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: December 25, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Miho Maeda, Mitsuru Mochizuki, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
  • Publication number: 20180352555
    Abstract: A mobile communication system capable of easily notifying the interference-related information and avoiding interference in a situation in which a macro cell and local nodes are deployed to coexist. In the system, a macro cell (eNB) notifies, via user equipments (UEs) present in a coverage, HeNBs present in the coverage of the interference-related information related to the interference to a physical resource to be used, for example, a high interference indication (HII) and an overload indicator (OI).
    Type: Application
    Filed: July 19, 2018
    Publication date: December 6, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Miho Maeda, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
  • Patent number: 10101468
    Abstract: An emission tomography device includes emission detectors for detecting a gamma ray incident from a patient body as a pulse signal, and a data collecting device for collecting information in which the gamma ray is detected in an emission detector. The data collecting device includes a timing circuit for outputting timing information corresponding to the timing of occurrence of an event in which a gamma ray is detected as a pulse signal in an emission detector, a simultaneous count circuit for identifying timing information in a true simultaneous count by comparing a plurality of timing information sent from a plurality of timing circuits, and a pulse calculating portion calculating a gamma ray detection location and a gamma ray energy from an intensity value of a pulse signal corresponding to the timing information identified by the simultaneous count circuit as a true simultaneous count.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 16, 2018
    Assignee: Shimadzu Corporation
    Inventor: Masayuki Nakazawa
  • Publication number: 20180284297
    Abstract: Provided is a radiation detector that is capable of accurately calculating the time of occurrence of fluorescence. In addition to a configuration that calculates a single signal time, the present invention, in view of the case in which a multiple event occurs, also has a configuration that on the basis of an added signal generated by adding detection signals together, calculates the time of occurrence of fluorescence (added signal time). The radiation detector according to the present invention is configured to output the added signal time as the time of occurrence of fluorescence when the number of detection elements 3a in the fluorescence detection is plural (at the time of a multiple event). In the case of a multiple event, from the viewpoint of strengthening of a signal addition, an added signal time is more accurate than a single signal time.
    Type: Application
    Filed: September 17, 2015
    Publication date: October 4, 2018
    Inventors: Masayuki NAKAZAWA, Tomoaki TSUDA
  • Publication number: 20180241582
    Abstract: A storage unit (M12) stores correspondence information in which at least two pieces of information among environment information, person information, and the device information detected by at least one of a plurality of devices (U1-n) and external information provided by an external device and autonomous operation information including operation information of the plurality of devices and notification information representing notification using a sound, a light, or an image of the plurality of devices are associated with each other. A control unit (M11) acquires the at least two pieces of information. The control unit (M11) determines the autonomous operation information based on the correspondence information and the at least two pieces of information.
    Type: Application
    Filed: September 29, 2016
    Publication date: August 23, 2018
    Inventors: HIDEKI NISHIMURA, MASAYUKI NAKAZAWA, SHINGO YAMASHITA, SHUNSUKE YAJIMA
  • Patent number: 10051642
    Abstract: A mobile communication system capable of easily notifying the interference-related information and avoiding interference in a situation in which a macro cell and local nodes are deployed to coexist. In the system, a macro cell (eNB) notifies, via user equipments (UEs) present in a coverage, HeNBs present in the coverage of the interference-related information related to the interference to a physical resource to be used, for example, a high interference indication (HII) and an overload indicator (OI).
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: August 14, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsuru Mochizuki, Miho Maeda, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
  • Publication number: 20180176839
    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: March 16, 2015
    Publication date: June 21, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takuya OHARA, Taisei SUEMITSU, Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Masayuki NAKAZAWA, Daisuke HIRAMATSU
  • Publication number: 20180124683
    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: November 30, 2017
    Publication date: May 3, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Miho MAEDA, Mitsuru MOCHIZUKI, Taiga SAEGUSA, Yasushi IWANE, Yuji KAKEHI, Masayuki NAKAZAWA, Taisei SUEMITSU
  • Publication number: 20180123707
    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: April 6, 2016
    Publication date: May 3, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hideki MORISHIGE, Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Yoshitaka HARA, Kuniyuki SUZUKI
  • Publication number: 20180041324
    Abstract: A mobile communication system capable of preventing interference in a communication system as well as reducing the load of a user equipment in a search operation. In the mobile communication system, radio communication is performed using a carrier having the same frequency in a direct link between a donor cell and a user equipment being served thereby and an access link between a relay node and a user equipment being served thereby. In a backhaul link between the donor cell and the relay node, radio communication is performed using a carrier having a different frequency from that of the carrier used in the direct link and the access link.
    Type: Application
    Filed: September 29, 2017
    Publication date: February 8, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Miho Maeda, Mitsuru Mochizuki, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
  • Publication number: 20180041995
    Abstract: A communication device base station that transmits a signal by using beamforming includes: a modulator-demodulator that generates data signals by individually encoding and modulating one or more pieces of data, and generates control signals by individually encoding and modulating control information equal in number to the terminals which are used to receive the data and is used in reception processing of the data signals; an RS generation unit that generates reference signals that are each specific to a corresponding destination and are used in estimating a condition of a radio channel for the reception processing of the data signals and the control signals; and a transceiver that arranges the data signals in a data channel arranges the control signals and the reference signals in a control channel in a way that signals having the same destination are arranged in the same region, and then transmits the signals.
    Type: Application
    Filed: January 29, 2016
    Publication date: February 8, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Noriyuki FUKUI, Masayuki NAKAZAWA
  • Patent number: 9877268
    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: July 23, 2015
    Date of Patent: January 23, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Miho Maeda, Mitsuru Mochizuki, Taiga Saegusa, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
  • Patent number: 9871643
    Abstract: A mobile communication system capable of preventing interference in a communication system as well as reducing the load of a user equipment in a search operation. In the mobile communication system, radio communication is performed using a carrier having the same frequency in a direct link between a donor cell and a user equipment being served thereby and an access link between a relay node and a user equipment being served thereby. In a backhaul link between the donor cell and the relay node, radio communication is performed using a carrier having a different frequency from that of the carrier used in the direct link and the access link.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: January 16, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Miho Maeda, Mitsuru Mochizuki, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
  • Publication number: 20180007733
    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: January 7, 2016
    Publication date: January 4, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Masayuki NAKAZAWA, Noriyuki FUKUI, Haruka NOZAWA
  • Publication number: 20170367624
    Abstract: A kinetic analysis system includes: an analytical value calculation unit configured to divide, into a plurality of divisions, a lung field region included in kinetic images in a plurality of time phases acquired as a result of kymography of a chest of an object, and calculate analytical values of the respective divisions in the plurality of time phases based on at least one of pixel signal values and the number of pixels in the respective divisions; a ventilation state calculation unit configured to calculate index values representing ventilation states of the respective divisions from the analytical values of the respective divisions in the plurality of time phases using different functions corresponding to the respective divisions; a display unit; and a control unit configured to cause the display unit to display the index values representing the ventilation states of the respective divisions in the plurality of time phases.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 28, 2017
    Inventor: Masayuki NAKAZAWA
  • Publication number: 20170367623
    Abstract: A dynamic analysis system includes: an analytic value calculation unit configured to calculate an analytic value in a plurality of time phases on the basis of a dynamic image in the plurality of time phases obtained by performing dynamic photography on the chest of a subject; a ventilation state calculation unit configured to calculate, using a non-linear function, an index value representing a ventilation state of a lung field from the analytic value in the plurality of time phases; a display unit; and a control unit configured to display the index value calculated on the plurality of time phases, on the display unit.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 28, 2017
    Inventors: Masayuki NAKAZAWA, Keiko Itaya