Patents by Inventor Fumihide Takizawa

Fumihide Takizawa 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: 20240178886
    Abstract: A reception-side apparatus includes: M receive antennas; and a processor configured to execute a first process of acquiring a first signal received from a first transmission-side apparatus from among signals simultaneously received from the N transmission-side apparatuses by receive diversity processing, and acquiring first data by demodulating and decoding the first signal. In the case of N>M, the processor acquires, for each of all patterns of a combination of a first signal, second signals from M?1 transmission-side apparatuses which are to be cancelled by receive diversity processing and third signals from N?M transmission-side apparatuses which are not to be cancelled by the receive diversity processing, a power ratio of power of the first signal relative to total power of the second and third signals based on a predetermined weight and a channel estimate of each signal, and selects a combination with the largest power ratio from among all the patterns.
    Type: Application
    Filed: February 7, 2024
    Publication date: May 30, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichi TAKIZAWA, Masafumi MORIYAMA, Fumihide KOJIMA, Atsushi KUROSAWA
  • Publication number: 20240171205
    Abstract: A wireless communication control method suppresses interference using an MMSE weight in an environment of wireless communication where the number of transmission stations transmitting a signal to a receiving station is larger than the number of reception antennas of the receiving station. The receiving station calculates power of an interference signal included in a signal received by the receiving station from the transmission stations the number of which is larger than the number of reception antennas, the interference signal corresponding to a part by which the number of transmission stations exceeds the number of reception antennas. The receiving station calculates the MMSE weight depending on the power of the interference signal, recalculates the power of the interference signal using the MMSE weight, and recalculates the MMSE weight depending on the recalculated power of the interference signal.
    Type: Application
    Filed: January 24, 2024
    Publication date: May 23, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichi TAKIZAWA, Masafumi MORIYAMA, Fumihide KOJIMA, Atsushi KUROSAWA
  • Patent number: 11929795
    Abstract: A reception-side apparatus includes: M receive antennas; and a processor configured to execute a first process of acquiring a first signal received from a first transmission-side apparatus from among signals simultaneously received from the N transmission-side apparatuses by receive diversity processing, and acquiring first data by demodulating and decoding the first signal. In the case of N>M, the processor acquires, for each of all patterns of a combination of a first signal, second signals from M?1 transmission-side apparatuses which are to be cancelled by receive diversity processing and third signals from N?M transmission-side apparatuses which are not to be cancelled by the receive diversity processing, a power ratio of power of the first signal relative to total power of the second and third signals based on a predetermined weight and a channel estimate of each signal, and selects a combination with the largest power ratio from among all the patterns.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: March 12, 2024
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenichi Takizawa, Masafumi Moriyama, Fumihide Kojima, Atsushi Kurosawa
  • Patent number: 11916581
    Abstract: A wireless communication control method suppresses interference using an MMSE weight in an environment of wireless communication where the number of transmission stations transmitting a signal to a receiving station is larger than the number of reception antennas of the receiving station. The receiving station calculates power of an interference signal included in a signal received by the receiving station from the transmission stations the number of which is larger than the number of reception antennas, the interference signal corresponding to a part by which the number of transmission stations exceeds the number of reception antennas. The receiving station calculates the MMSE weight depending on the power of the interference signal, recalculates the power of the interference signal using the MMSE weight, and recalculates the MMSE weight depending on the recalculated power of the interference signal.
    Type: Grant
    Filed: December 12, 2022
    Date of Patent: February 27, 2024
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenichi Takizawa, Masafumi Moriyama, Fumihide Kojima, Atsushi Kurosawa
  • Publication number: 20100297637
    Abstract: To detect a bacterium belonging to the genus Legionella rapidly, with high sensitivity, and specifically. Disclosed are: a primer set for amplifying ribosomal RNA of a bacterium belonging to the genus Legionella specifically and highly efficiently; and a method for detecting ribosomal RNA of a bacterium belonging to the genus Legionella by using the primer set.
    Type: Application
    Filed: October 1, 2008
    Publication date: November 25, 2010
    Applicants: TOSOH CORPORATION, INTEC SYSTEMS INSTITUTE ,INCORPORATED
    Inventors: Kurando Une, Juichi Saito, Toshinori Hayashi, Fumihide Takizawa, Yoichi Hashimoto