Patents by Inventor Kenji Koyanagi

Kenji Koyanagi 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: 20210142781
    Abstract: In order to provide a new mechanism relating to further enhanced voice synthesis, a wireless terminal includes a receiver and a transmitter. The receiver is configured to be capable of receiving, when the wireless terminal is included in at least one group, a voice communication relating to the at least one group. The transmitter is configured to transmit, to a communication device that controls the voice communication relating to the at least one group, volume information for determining volume on the voice communication relating to the at least one group.
    Type: Application
    Filed: January 22, 2018
    Publication date: May 13, 2021
    Applicant: NEC CORPORATION
    Inventor: Kenji KOYANAGI
  • Publication number: 20210120637
    Abstract: An induction heating device is provided. The induction heating device comprises a plurality of induction heating devices disposed at intervals along the circumference of a ring-shaped workpiece, a setting unit for setting induction heating conditions, and a switching control unit. Each of the plurality of induction heating devices comprises heating coils disposed facing areas to be heated of the workpiece, a plurality of transformers connected to the heating coils in parallel, a plurality of matching units connected to any one of the plurality of transformers, an inverter unit having a rectifier unit and an inverter unit, an inverter control unit having a rectification control unit, and a group of switches.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Applicant: NETUREN CO., LTD.
    Inventors: Hitoshi Nakatsu, Masato Yoshioka, Yoshimasa Tanaka, Tsutomu Ito, Kenji Koyanagi, Masaki Sagae, Tatsuya Ishii, Yoshitaka Misaka, Yasuharu Ogawa
  • Patent number: 10959242
    Abstract: A communications system 1 has: an eNB 20 having a feedback conditions control unit 22 that controls feedback conditions in accordance with call priority and a control unit 21 that controls communications with a mobile station 10 on the basis of feedback information that includes reception quality in the mobile station 10 and decoding results for a received call, said feedback conditions being for determining whether or not transmission of the feedback information is necessary; and the mobile station 10 having a priority setting unit 13 that sets a priority level for the mobile station itself, a reception quality measuring unit 11 that measures the reception quality of reference signals from the eNB 20, and a feedback requirement determination unit 12 that determines whether or not transmission of feedback information is required, on the basis of the feedback conditions.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: March 23, 2021
    Assignee: NEC CORPORATION
    Inventor: Kenji Koyanagi
  • Patent number: 10952288
    Abstract: An induction heating device and an induction heating method are provided. The entire areas to be heated of the workpiece can be uniformly heated to a predetermined high temperature, and uniform heating is possible even when the workpiece deforms in a non-uniform manner during heating. When areas to be heated are established on a workpiece so as to extend in one direction and the areas to be heated are induction-heated, the deformation amount on one edge of the areas to be heated is different from that on the other. This induction heating device includes; heating coils facing a portion of the areas to be heated when the workpiece is induction-heated; and a relative transfer means for transferring the workpiece and the heating coils along one direction in a relative manner, and the heating coils are disposed so as to correspond to the areas to be heated during the heating period.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: March 16, 2021
    Assignee: NETUREN CO., LTD.
    Inventors: Hitoshi Nakatsu, Masato Yoshioka, Yoshimasa Tanaka, Tsutomu Ito, Kenji Koyanagi, Masaki Sagae, Tatsuya Ishii, Yoshitaka Misaka, Yasuharu Ogawa
  • Publication number: 20210045118
    Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.
    Type: Application
    Filed: October 15, 2020
    Publication date: February 11, 2021
    Applicant: NEC CORPORATION
    Inventors: Takamichi INOUE, Kenji KOYANAGI, Le LIU, Yoshikazu KAKURA
  • Patent number: 10912159
    Abstract: An induction heating device and an induction heating method are provided. The entire areas to be heated of the workpiece can be uniformly heated to a predetermined high temperature, and uniform heating is possible even when the workpiece deforms in a non-uniform manner during heating. When areas to be heated are established on a workpiece so as to extend in one direction and the areas to be heated are induction-heated, the deformation amount on one edge of the areas to be heated is different from that on the other. This induction heating device includes; heating coils facing a portion of the areas to be heated when the workpiece is induction-heated; and a relative transfer means for transferring the workpiece and the heating coils along one direction in a relative manner, and the heating coils are disposed so as to correspond to the areas to be heated during the heating period.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: February 2, 2021
    Assignee: NETUREN CO., LTD.
    Inventors: Hitoshi Nakatsu, Masato Yoshioka, Yoshimasa Tanaka, Tsutomu Ito, Kenji Koyanagi, Masaki Sagae, Tatsuya Ishii, Yoshitaka Misaka, Yasuharu Ogawa
  • Patent number: 10849126
    Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: November 24, 2020
    Assignee: NEC CORPORATION
    Inventors: Takamichi Inoue, Kenji Koyanagi, Le Liu, Yoshikazu Kakura
  • Patent number: 10805929
    Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: October 13, 2020
    Assignee: NEC CORPORATION
    Inventors: Takamichi Inoue, Kenji Koyanagi, Le Liu, Yoshikazu Kakura
  • Publication number: 20200314825
    Abstract: To solve a problem that although the increase of the number of frequency blocks by allocating discontinuous subcarriers (RBs) as in OFDM enables an increase in multi-diversity effect and an improvement in throughput, the number of RB allocation patterns increases with the increase of the number of frequency blocks, resulting in an increase in the amount of information relating to the allocated RBs, the resource block allocation unit is determined when resource blocks discontinuous on the frequency axis are allocated to a terminal, and the number of bits of scheduling information indicating the allocated resource blocks by using Tree Based is set to the number of bits corresponding to the determined allocation unit.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 1, 2020
    Applicant: NEC CORPORATION
    Inventors: Kenji Koyanagi, Takamichi Inoue, Le Liu, Yoshikazu Kakura
  • Publication number: 20200305149
    Abstract: Provided is a technique capable of reporting resource block allocation information with no waste when an allocated resource block is reported, because in the current LTE downlink, the waste of the amount of resource allocation information increases in some cases since a restriction is imposed such that 37-bit fixed scheduling information is transmitted. A resource block group consisting of at least one or more resource blocks continuous on the frequency axis is allocated to a terminal, and the number of controlling signals for reporting allocation information indicating the allocated resource blocks is determined.
    Type: Application
    Filed: June 11, 2020
    Publication date: September 24, 2020
    Applicant: NEC CORPORATION
    Inventors: Kenji Koyanagi, Takamichi Onoue, Le Liu, Yoshikazu Kakura
  • Patent number: 10736086
    Abstract: Provided is a technique capable of reporting resource block allocation information with no waste when an allocated resource block is reported, because in the current LTE downlink, the waste of the amount of resource allocation information increases in some cases since a restriction is imposed such that 37-bit fixed scheduling information is transmitted. A resource block group consisting of at least one or more resource blocks continuous on the frequency axis is allocated to a terminal, and the number of controlling signals for reporting allocation information indicating the allocated resource blocks is determined.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: August 4, 2020
    Assignee: NEC CORPORATION
    Inventors: Kenji Koyanagi, Takamichi Inoue, Le Liu, Yoshikazu Kakura
  • Patent number: 10716106
    Abstract: To solve a problem that although the increase of the number of frequency blocks by allocating discontinuous subcarriers (RBs) as in OFDM enables an increase in multi-diversity effect and an improvement in throughput, the number of RB allocation patterns increases with the increase of the number of frequency blocks, resulting in an increase in the amount of information relating to the allocated RBs, the resource block allocation unit is determined when resource blocks discontinuous on the frequency axis are allocated to a terminal, and the number of bits of scheduling information indicating the allocated resource blocks by using Tree Based is set to the number of bits corresponding to the determined allocation unit.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: July 14, 2020
    Assignee: NEC CORPORATION
    Inventors: Kenji Koyanagi, Takamichi Inoue, Le Liu, Yoshikazu Kakura
  • Patent number: 10624096
    Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: April 14, 2020
    Assignee: NEC CORPORATION
    Inventors: Takamichi Inoue, Kenji Koyanagi, Le Liu, Yoshikazu Kakura
  • Publication number: 20190387528
    Abstract: A communications system 1 has: an eNB 20 having a feedback conditions control unit 22 that controls feedback conditions in accordance with call priority and a control unit 21 that controls communications with a mobile station 10 on the basis of feedback information that includes reception quality in the mobile station 10 and decoding results for a received call, said feedback conditions being for determining whether or not transmission of the feedback information is necessary; and the mobile station 10 having a priority setting unit 13 that sets a priority level for the mobile station itself, a reception quality measuring unit 11 that measures the reception quality of reference signals from the eNB 20, and a feedback requirement determination unit 12 that determines whether or not transmission of feedback information is required, on the basis of the feedback conditions.
    Type: Application
    Filed: January 19, 2018
    Publication date: December 19, 2019
    Applicant: NEC Corporation
    Inventor: Kenji KOYANAGI
  • Publication number: 20190379566
    Abstract: In order to provide a new mechanism capable of reducing an interference caused by a multipath delay, a base station includes a processor and a transmitter. The processor generates a first modulation symbol from transmission data, converts the first modulation symbol from a frequency domain signal to a first valid symbol being a time domain signal by performing inverse Fourier transform for the first modulation symbol, inserts a first guard interval into the first valid symbol, and outputs the inserted signal as a first orthogonal frequency division multiplexing (OFDM) symbol. The transmitter transmits a first OFDM signal generated based on the first OFDM symbol. The processor leaves blank at least one of a second OFDM symbol adjacent to the first OFDM symbol or at least one of a plurality of subcarriers configuring the first valid symbol.
    Type: Application
    Filed: January 15, 2018
    Publication date: December 12, 2019
    Applicant: NEC CORPORATION
    Inventors: Kenji KOYANAGI, Tsuguo MARU
  • Publication number: 20190191436
    Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.
    Type: Application
    Filed: February 14, 2019
    Publication date: June 20, 2019
    Applicant: NEC CORPORATION
    Inventors: Takamichi Inoue, Kenji Koyanagi, Le Liu, Yoshikazu Kakura
  • Publication number: 20190090232
    Abstract: Provided is a technique capable of reporting resource block allocation information with no waste when an allocated resource block is reported, because in the current LTE downlink, the waste of the amount of resource allocation information increases in some cases since a restriction is imposed such that 37-bit fixed scheduling information is transmitted. A resource block group consisting of at least one or more resource blocks continuous on the frequency axis is allocated to a terminal, and the number of controlling signals for reporting allocation information indicating the allocated resource blocks is determined.
    Type: Application
    Filed: October 16, 2018
    Publication date: March 21, 2019
    Applicant: NEC CORPORATION
    Inventors: Kenji KOYANAGI, Takamichi INOUE, Le LIU, Yoshikazu KAKURA
  • Publication number: 20190045511
    Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.
    Type: Application
    Filed: October 2, 2018
    Publication date: February 7, 2019
    Applicant: NEC CORPORATION
    Inventors: Takamichi INOUE, Kenji KOYANAGI, Le LIU, Yoshikazu KAKURA
  • Patent number: 10182423
    Abstract: Provided is a technique capable of reporting resource block allocation information with no waste when an allocated resource block is reported, because in the current LTE downlink, the waste of the amount of resource allocation information increases in some cases since a restriction is imposed such that 37-bit fixed scheduling information is transmitted. A resource block group consisting of at least one or more resource blocks continuous on the frequency axis is allocated to a terminal, and the number of controlling signals for reporting allocation information indicating the allocated resource blocks is determined.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: January 15, 2019
    Assignee: NEC CORPORATION
    Inventors: Kenji Koyanagi, Takamichi Inoue, Le Liu, Yoshikazu Kakura
  • Publication number: 20180359736
    Abstract: To solve a problem that although the increase of the number of frequency blocks by allocating discontinuous subcarriers (RBs) as in OFDM enables an increase in multi-diversity effect and an improvement in throughput, the number of RB allocation patterns increases with the increase of the number of frequency blocks, resulting in an increase in the amount of information relating to the allocated RBs, the resource block allocation unit is determined when resource blocks discontinuous on the frequency axis are allocated to a terminal, and the number of bits of scheduling information indicating the allocated resource blocks by using Tree Based is set to the number of bits corresponding to the determined allocation unit.
    Type: Application
    Filed: August 20, 2018
    Publication date: December 13, 2018
    Applicant: NEC CORPORATION
    Inventors: Kenji KOYANAGI, Takamichi INOUE, Le LIU, Yoshikazu KAKURA