Patents by Inventor Takashi Iwai

Takashi Iwai 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).

  • Patent number: 11649370
    Abstract: A thermosetting coating composition includes a hydroxyl group-containing resin (A), a blocked polyisocyanate curing agent (B), and an amine compound (C) represented by the formula (1). In the formula (1), R1 to R5 each independently represents a hydrogen atom or an organic group having one or more carbon atoms. The organic group may contain one or more atoms selected from the group consisting of oxygen atoms, nitrogen atoms, sulfur atoms, and halogen atoms.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: May 16, 2023
    Assignee: KANSAI PAINT CO., LTD.
    Inventors: Haruyuki Gontani, Fumio Yamashita, Takashi Iwai
  • Publication number: 20230139852
    Abstract: The present invention provides a transmission device and transmission method that are capable of improving reception quality during cooperative communication. A first transmission device according to the present invention comprises: a control circuit which, if the first transmission device and a second transmission device are carrying out transmission in cooperation, generates first control information that includes information common to at least a portion of second control information transmitted by the second transmission device in a second preamble; and a transmission circuit which transmits the first control information in a first preamble.
    Type: Application
    Filed: February 25, 2021
    Publication date: May 4, 2023
    Inventors: Hiroyuki KANAYA, Takashi IWAI, Yoshio URABE, Tomofumi TAKATA, Takayuki NAKANO, Jun MINOTANI, Lei HUANG
  • Publication number: 20230134156
    Abstract: An epoxy resin, which is obtained by reacting at least a compound having one or more epoxy groups and a compound having a functional group that reacts with the epoxy groups, satisfies conditions (I) and/or (II): (I) the compound having a functional group that reacts with the epoxy groups includes a trihydric or higher phenol compound and/or a compound including a trifunctional or higher polyisocyanate; (II) the epoxy resin has an average degree of polyfunctionalization (X1) per molecule, as expressed by Formula (1), of 0.30 or more: Average degree of polyfunctionalization (X1)=number of ends per molecule of epoxy resin?2.
    Type: Application
    Filed: March 23, 2021
    Publication date: May 4, 2023
    Inventors: Shinji TSUSHIMA, Noriyuki YAMADA, Takashi IWAI
  • Patent number: 11641628
    Abstract: In a terminal, a selecting unit selects one generation method from a plurality of generation methods for reference signals (sounding reference signals (SRSs)). A radio transmitting unit transmits reference signals (SRSs) generated in accordance with the selected generation method.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: May 2, 2023
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Takashi Iwai, Hidetoshi Suzuki, Tomohumi Takata, Tetsuya Yamamoto
  • Publication number: 20230129544
    Abstract: A communication apparatus in the present disclosure comprises an AID generator, a Trigger frame generator, and a wireless transmitter/receiver. When a Trigger Type in a trigger frame is an RA trigger, the AID generator (103) generates, as information for an AID12 subfield, information that is different from an AID. The Trigger frame generator (104) generates a RA variant Trigger frame when the Trigger Type in the trigger frame is an RA trigger, and sets, in the AID12 subfield included in the RA variant Trigger frame, the information output from the AID generator (103). The wireless transmitter/receiver (106) transmits the Trigger frame, generated by the Trigger frame generator (104), to a terminal (200).
    Type: Application
    Filed: December 22, 2022
    Publication date: April 27, 2023
    Inventors: TAKASHI IWAI, TOMOHUMI TAKATA, ATSUSHI MATSUMOTO
  • Patent number: 11637733
    Abstract: A terminal (transmission apparatus) is disclosed, which is capable of appropriately configuring processing of a Post-IFFT section in accordance with a communication environment in signal waveform generation. In the terminal, an IFFT section performs IFFT processing on a transmission signal; a control section determines a signal waveform configuration for the transmission signal after the IFFT processing in accordance with a communication environment of the terminal; and the Post-IFFT section performs Post-IFFT processing on the transmission signal after the IFFT processing based on the determined signal waveform configuration.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: April 25, 2023
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Tetsuya Yamamoto, Hidetoshi Suzuki, Lilei Wang, Takashi Iwai
  • Publication number: 20230117291
    Abstract: A communication apparatus includes signal generation circuitry which, in operation, generates a control signal including a plurality of user specific fields, each of the plurality of user specific fields including an Association ID (AID) subfield for specifying a corresponding terminal station, and transmission circuitry which, in operation, transmits the control signal, wherein one of a plurality of AIDs for scheduled access or one of a plurality of random access IDs for random access is assigned to the AID subfield in each of the plurality of user specific fields, and each value of the plurality of random access IDs indicates a type of a terminal station which can perform random access to the at least one resource unit.
    Type: Application
    Filed: December 19, 2022
    Publication date: April 20, 2023
    Inventors: TAKASHI IWAI, TOMOHUMI TAKATA, YOSHIO URABE
  • Patent number: 11632153
    Abstract: This invention is a transmission device capable of enhancing the reception characteristics of a terminal when employing transmit diversity using two antenna ports in an ePDCCH. In a base station (100) that transmits a reference signal to a terminal (200) using two antenna ports, a setting unit (102), on the basis of the reception quality of the terminal, sets as the aforementioned two antenna ports either a first antenna port pair for which DMRS (reference signals) do not undergo mutual code multiplexing, or a second antenna port pair for which the DMRS do undergo code multiplexing. A transmitter (109) transmits the DMRS from the two antenna ports set in the setting unit (102).
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: April 18, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Tadashi Yoshida, Ayako Horiuchi, Takashi Iwai, Yoshihiko Ogawa, Akihiko Nishio
  • Publication number: 20230115816
    Abstract: Provided is a terminal which can suitably transmit an uplink signal. In a terminal (100), a PC parameter control unit (104) sets a first power control parameter corresponding to a first service, when a prescribed condition relating to a control channel used for transmission of uplink signal allocation is met, and sets a second power control parameter corresponding to a second service, when the prescribed condition is not met. A transmission unit (109) transmits the uplink signal by using transmission power calculated by using the first power control parameter or the second power control parameter.
    Type: Application
    Filed: December 7, 2022
    Publication date: April 13, 2023
    Inventors: Takashi IWAI, Hidetoshi SUZUKI, Tetsuya YAMAMOTO, Tomoya NUNOME, Tomofumi TAKATA
  • Publication number: 20230103550
    Abstract: In order to provide a transmission device and transmission method with which a response signal for random access preamble transmitted from a preamble transmission device is efficiently transmitted, setting unit in base station sets a first resource candidate group, which enables terminal capable of receiving a latch response transmitted by demodulation reference signal (DMRS) transmission to be selected, and a second resource candidate group, which enables terminal incapable of receiving a latch response transmitted by DMRS transmission but capable of receiving a latch response transmitted by cell-specific reference signal (CRS) transmission to be selected. Control unit selects DMRS transmission as the latch response transmission method when a resource in which latch preamble has been received is included in the first candidate group, but selects CRS transmission as the latch response transmission method when the resource is included in the second resource candidate group.
    Type: Application
    Filed: December 7, 2022
    Publication date: April 6, 2023
    Inventors: Akihiko Nishio, Masayuki Hoshino, Hidetoshi Suzuki, Takashi Iwai
  • Patent number: 11616535
    Abstract: Provided are a radio communication terminal apparatus and a radio transmission method by which intersymbol interference of DM-RS of a CoMP terminal and a Non-CoMP terminal can be reduced. A CoMP set setting unit (102) sets the cell IDs of all cells in the CoMP set in a cell selection unit (104), and a serving cell setting unit (103) sets the cell ID of the serving cell in the cell selection unit (104). The cell selection unit (104) selects the cell ID having a number closest to the cell ID of the serving cell from the cells in the CoMP set. A sequence information calculation unit (106) derives a sequence group number from the selected cell ID, and the sequence information calculation unit (106) calculates a sequence number from the derived sequence group number and a transmission bandwidth of the DM-RS.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: March 28, 2023
    Assignee: SUN PATENT TRUST
    Inventors: Takashi Iwai, Akihiko Nishio, Yoshihiko Ogawa, Seigo Nakao, Masayuki Hoshino
  • Patent number: 11616619
    Abstract: Provided is a base station with which it is possible to appropriately arrange a reference signal. In a base station (100), a control unit (101) determines a second threshold value on the basis of a first threshold value used in determining the arrangement of a reference signal. A transmission unit (105) transmits the reference signal arranged on the basis of the second threshold value.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: March 28, 2023
    Assignee: Panasonic Intellectual Propertv Corporation of America
    Inventors: Shotaro Maki, Takashi Iwai, Ayako Horiuchi, Ankit Bhamri, Yoshihiko Ogawa
  • Publication number: 20230089222
    Abstract: The present invention provides a transmitter which can suitably perform a transmission power control in a PT-RS port. In this transmitter (100), a control unit (101) determines a transmission power for transmitting a reference signal (PT-RS) for phase tracking and a data signal within a range in which the maximum transmission power for each antenna port is not exceeded. In addition, a transmission unit (105) transmits the reference signal for phase tracking and the data signal at the transmission power determined by the control unit (101).
    Type: Application
    Filed: December 2, 2022
    Publication date: March 23, 2023
    Inventors: Shotaro MAKI, Takashi IWAI, Hidetoshi SUZUKI
  • Patent number: 11611885
    Abstract: Provided is a radio communication device capable of reducing interference, caused by non-SR transmission, with a basic service set (BSS) performing spatial reuse (SR) transmission. An SR transmission resource control unit (107) of the radio communication device (SR initiator) (100) determines transmission resources for an SR signal to be transmitted by means of SR to a second BSS other than a first BSS to which the radio communication device (100) belongs on the basis of radio quality information transmitted from other radio communication devices (SR responders) in the first BSS. A radio transmission/reception unit (101) transmits the SR signal by using the determined transmission resources.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: March 21, 2023
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Jun Minotani, Atsushi Matsumoto, Takashi Iwai, Tomofumi Takata, Yoshio Urabe
  • Patent number: 11601926
    Abstract: Provided is a terminal that can appropriately transmit an uplink signal. In a terminal (200), a control unit (211) determines a processing mode with respect to uplink data and uplink control information according to a requirement for at least one of uplink data and uplink control information when transmission of an uplink data channel that includes the uplink data and transmission of an uplink control channel that includes the uplink control information temporally overlap. A transmission unit (218) transmits the at least one of the uplink data and the uplink control information on the basis of the determined processing mode.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: March 7, 2023
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Tetsuya Yamamoto, Hongchao Li, Hidetoshi Suzuki, Takashi Iwai
  • Publication number: 20230048062
    Abstract: According to the present invention, a base station can dynamically change a repetition transmission method as appropriate. In a base station (100), a repetition control unit (103) determines a data repetition pattern for a terminal (200). A transmission unit (109) repeatedly transmits data (repetition transmission) on the basis of the repetition pattern. The data repetition pattern corresponds to control information to be reported to the terminal (200) by dynamic signaling.
    Type: Application
    Filed: October 28, 2022
    Publication date: February 16, 2023
    Inventors: Takashi IWAI, Tetsuya YAMAMOTO, Tomoya NUNOME, Tomofumi TAKATA
  • Patent number: 11582082
    Abstract: Provided is a transmitter which improves the flexibility of SRS resource allocation without increasing the amount of signaling for notifying the cyclic shift amount. In the transmitter, with regard to each basic shift amount candidate group having a basic shift amount from 0 to N?1, a transmission control unit (206) specifies the actual shift amount imparted to a cyclic shift sequence used in scrambling a reference signal transmitted from each antenna port, said specification being performed based on a table in which cyclic shift amount candidates correspond to each antenna port, and based on setting information transmitted from a base station (100). With regard to basic shift amount candidates for shift amount X, the table differentiates between an offset pattern comprising offset values for cyclic shift amount candidates corresponding to each antenna port and an offset pattern corresponding to basic shift amount candidates of X+N/2.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: February 14, 2023
    Assignee: Sun Patent Trust
    Inventors: Yoshihiko Ogawa, Akihiko Nishio, Masayuki Hoshino, Takashi Iwai
  • Patent number: 11570816
    Abstract: A communication apparatus in the present disclosure comprises an AID generator, a Trigger frame generator, and a wireless transmitter/receiver. When a Trigger Type in a trigger frame is an RA trigger, the AID generator (103) generates, as information for an AID12 subfield, information that is different from an AID. The Trigger frame generator (104) generates a RA variant Trigger frame when the Trigger Type in the trigger frame is an RA trigger, and sets, in the AID12 subfield included in the RA variant Trigger frame, the information output from the AID generator (103). The wireless transmitter/receiver (106) transmits the Trigger frame, generated by the Trigger frame generator (104), to a terminal (200).
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: January 31, 2023
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Takashi Iwai, Tomohumi Takata, Atsushi Matsumoto
  • Patent number: 11570821
    Abstract: In a terminal (200), a radio transmitter (209) transmits a signal, and a controller (204) determines an allocation resource to which a signal is assigned in a predetermined frequency band. The predetermined frequency band herein is divided into a plurality of bands, and each of the plurality of bands includes a plurality of frequency resources which are base units of resource allocation for the signal. Furthermore, the allocation resource to which the signal is assigned is composed of at least one of the base units of each of the plurality of bands. Furthermore, a configuration method of the at least one of the base units forming the allocation resource is different for each of the plurality of bands.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: January 31, 2023
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Tomofumi Takata, Takashi Iwai, Lilei Wang, Hidetoshi Suzuki, Tetsuya Yamamoto
  • Publication number: 20230022595
    Abstract: In the multiple short sequence based SRS, multiple items of sequence data having a short sequence length corresponding to a partial band are used for transmitting SRS in discontinuous bands. In the multiple short sequence based SRS, a terminal specifies a frequency domain to be used for transmitting a reference signal using predetermined sequence data, applies a phase shift index associated with the specified frequency domain to the reference signal, and transmits the reference signal to which the phase shift index is applied by using the specified frequency domain.
    Type: Application
    Filed: October 4, 2022
    Publication date: January 26, 2023
    Inventors: Takashi Iwai, Tomohumi Takata, Hidetoshi Suzuki, Ayako Horiuchi