Patents by Inventor Masayuki Orihashi

Masayuki Orihashi 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: 11563522
    Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: January 24, 2023
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Shutai Okamura, Kiyotaka Kobayashi, Masayuki Orihashi, Kazuaki Takahashi
  • Patent number: 11469929
    Abstract: Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)? obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: October 11, 2022
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka
  • Patent number: 11387472
    Abstract: The present disclosure provides an energy management system capable of improving energy efficiency. The energy management system includes: a fuel cell configured to supply energy used in a facility; a first hydrogen supply unit configured to supply hydrogen to the fuel cell by causing a power generation apparatus that uses renewable energy to perform water electrolysis; a second hydrogen supply unit configured to supply hydrogen to the fuel cell by reforming natural gas supplied via a pipeline; and a control unit configured to determine a ratio between hydrogen supplied from the first hydrogen supply unit to the fuel cell and hydrogen supplied from the second hydrogen supply unit to the fuel cell. The control unit determines the ratio in accordance with a percentage of heat energy and energy other than the heat energy with respect to the energy used in the facility.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: July 12, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kei Nakamuta, Hideshi Mizutani, Keisuke Kikuchi, Nobuyuki Orihashi, Tomio Yamanaka, Atsushi Nakajima, Shinichi Yatsuzuka, Masayuki Suzuki, Hiroshi Toge
  • Publication number: 20220158762
    Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.
    Type: Application
    Filed: February 1, 2022
    Publication date: May 19, 2022
    Inventors: Yutaka MURAKAMI, Shutai OKAMURA, Kiyotaka KOBAYASHI, Masayuki ORIHASHI, Kazuaki TAKAHASHI
  • Patent number: 11277226
    Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: March 15, 2022
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Shutai Okamura, Kiyotaka Kobayashi, Masayuki Orihashi, Kazuaki Takahashi
  • Patent number: 11223457
    Abstract: A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: January 11, 2022
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka
  • Patent number: 11218266
    Abstract: A plurality of multicarrier signals is generated. Each of the plurality of multicarrier signals includes a pilot symbol sequence at a same temporal point in each multicarrier signal. Each pilot symbol sequence includes a plurality of pilot symbols with non-zero amplitude. The pilot symbol sequences are orthogonal to each other at the same temporal point. A quantity of the plurality of pilot symbols in each pilot symbol sequence is greater than or equal to a quantity of the plurality of multicarrier signals to be transmitted. The plurality of multicarrier signals are transmitted in an identical frequency band from a plurality of antennas. The plurality of antennas includes two, three, or four antennas.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: January 4, 2022
    Assignee: Redwood Technologies, LLC
    Inventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka
  • Publication number: 20210376982
    Abstract: A radio transmission apparatus determines information indicative of an estimated communications channel condition and generates a single modulation signal or a plurality of modulation signals based on the estimated communications channel condition information. The single modulation signal is transmitted from a first antenna of a plurality of antenna or the plurality of modulation signals are transmitted from the first antenna and at least a second antenna of the plurality of antenna. The plurality of modulation signals include different information from each other and are transmitted over an identical frequency band and at an identical temporal point. The single modulation signal and the plurality of modulation signals contain parameter information indicating a number of modulation signals transmitted at the same time.
    Type: Application
    Filed: August 17, 2021
    Publication date: December 2, 2021
    Inventors: Yutaka MURAKAMI, Masayuki ORIHASHI, Akihiko MATSUOKA
  • Patent number: 11121723
    Abstract: A low-density parity check convolution code (LDPC-CC) is made, and a signal sequence is sent after being subjected to an error-correcting encodement using the low-density parity check convolution code. In this case, a low-density parity check code of a time-variant period (3g) is created by linear operations of first to 3g-th (letter g designates a positive integer) parity check polynomials and input data.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: September 14, 2021
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Patent number: 11115166
    Abstract: A radio transmission apparatus determines information indicative of an estimated communications channel condition and generates a single modulation signal or a plurality of modulation signals based on the estimated communications channel condition information. The single modulation signal is transmitted from a first antenna of a plurality of antenna or the plurality of modulation signals are transmitted from the first antenna and at least a second antenna of the plurality of antenna. The plurality of modulation signals include different information from each other and are transmitted over an identical frequency band and at an identical temporal point. The single modulation signal and the plurality of modulation signals contain parameter information indicating a number of modulation signals transmitted at the same time.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: September 7, 2021
    Assignee: Wi-Fi One, LLC
    Inventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka
  • Publication number: 20210273832
    Abstract: Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)? obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
    Type: Application
    Filed: May 19, 2021
    Publication date: September 2, 2021
    Inventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka
  • Patent number: 11050592
    Abstract: Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)? obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: June 29, 2021
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka
  • Publication number: 20210167915
    Abstract: A plurality of multicarrier signals is generated. Each of the plurality of multicarrier signals includes a pilot symbol sequence at a same temporal point in each multicarrier signal. Each pilot symbol sequence includes a plurality of pilot symbols with non-zero amplitude. The pilot symbol sequences are orthogonal to each other at the same temporal point. A quantity of the plurality of pilot symbols in each pilot symbol sequence is greater than or equal to a quantity of the plurality of multicarrier signals to be transmitted. The plurality of multicarrier signals are transmitted in an identical frequency band from a plurality of antennas. The plurality of antennas includes two, three, or four antennas.
    Type: Application
    Filed: January 13, 2021
    Publication date: June 3, 2021
    Inventors: Yutaka MURAKAMI, Masayuki ORIHASHI, Akihiko MATSUOKA
  • Patent number: 11018821
    Abstract: A first OFDM frame signal includes a grid of multiple frequency subcarriers and multiple time periods.—An OFDM symbol is transmitted using multiple frequency subcarriers during a time period and includes known reference OFDM symbols assigned to corresponding time-frequency resource elements in the grid. —Each resource element is defined by a one of the multiple frequency subcarriers and one of the multiple time periods. —A second OFDM frame signal is also generated, but the resource elements assigned to the known reference OFDM symbols are different from the time-frequency resource elements in the grid assigned to the known reference OFDM symbols in the first OFDM frame signal. The first and second OFDM frame signals are converted to a first and second radio signals. The first radio signal is transmitted from a first antenna and the second radio signal from a second, different antenna.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: May 25, 2021
    Assignee: Optis Wireless Technology, LLC
    Inventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka, Yoichi Nakagawa
  • Patent number: 10924241
    Abstract: A plurality of multicarrier signals is generated. Each of the plurality of multicarrier signals includes a pilot symbol sequence at a same temporal point in each multicarrier signal. Each pilot symbol sequence includes a plurality of pilot symbols with non-zero amplitude. The pilot symbol sequences are orthogonal to each other at the same temporal point. A quantity of the plurality of pilot symbols in each pilot symbol sequence is greater than or equal to a quantity of the plurality of multicarrier signals to be transmitted. The plurality of multicarrier signals are transmitted in an identical frequency band from a plurality of antennas. The plurality of antennas includes two, three, or four antennas.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: February 16, 2021
    Assignee: Wi-Fi One, LLC
    Inventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka
  • Patent number: 10855312
    Abstract: A transmission apparatus includes an encoder that codes a data sequence with a parity check matrix, wherein the data sequence includes a final information bit sequence and virtual information bits, and outputs the final information bit sequence and a parity sequence, as LDPC codes, and a transmitter that transmits the LDPC codes as a transmission data. A column length of the parity check matrix is longer than a total length of the final information bit sequence and the parity sequence, by a length of the virtual information bits that are set to “0” and are not transmitted. The total length of the final information bit sequence and the parity sequence has a sequence length corresponding to a length from a first column to a determined column of the parity check matrix. The encoder generates the LDPC codes by using the first column to the determined column among one or more column(s) of the parity check matrix.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: December 1, 2020
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Publication number: 20200266930
    Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.
    Type: Application
    Filed: April 27, 2020
    Publication date: August 20, 2020
    Inventors: Yutaka MURAKAMI, Shutai OKAMURA, Kiyotaka KOBAYASHI, Masayuki ORIHASHI, Kazuaki TAKAHASHI
  • Publication number: 20200244416
    Abstract: A plurality of multicarrier signals is generated. Each of the plurality of multicarrier signals includes a pilot symbol sequence at a same temporal point in each multicarrier signal. Each pilot symbol sequence includes a plurality of pilot symbols with non-zero amplitude. The pilot symbol sequences are orthogonal to each other at the same temporal point. A quantity of the plurality of pilot symbols in each pilot symbol sequence is greater than or equal to a quantity of the plurality of multicarrier signals to be transmitted. The plurality of multicarrier signals are transmitted in an identical frequency band from a plurality of antennas. The plurality of antennas includes two, three, or four antennas.
    Type: Application
    Filed: April 15, 2020
    Publication date: July 30, 2020
    Inventors: Yutaka MURAKAMI, Masayuki ORIHASHI, Akihiko MATSUOKA
  • Publication number: 20200220687
    Abstract: A radio transmission apparatus determines information indicative of an estimated communications channel condition and generates a single modulation signal or a plurality of modulation signals based on the estimated communications channel condition information. The single modulation signal is transmitted from a first antenna of a plurality of antenna or the plurality of modulation signals are transmitted from the first antenna and at least a second antenna of the plurality of antenna. The plurality of modulation signals include different information from each other and are transmitted over an identical frequency band and at an identical temporal point. The single modulation signal and the plurality of modulation signals contain parameter information indicating a number of modulation signals transmitted at the same time.
    Type: Application
    Filed: March 19, 2020
    Publication date: July 9, 2020
    Inventors: Yutaka MURAKAMI, Masayuki ORIHASHI, Akihiko MATSUOKA
  • Patent number: RE49244
    Abstract: A communication apparatus includes a reference signal generating section, a transmitting section, a propagation estimating section, a first data acquiring section, and a decoding section. The reference signal generating section generates a first reference signal to enable a communicating party to estimate a propagation environment. The transmitting section transmits the first reference signal. The propagation estimating section estimates a first propagation estimation value of the propagation environment using a second reference signal transmitted from the communicating party. The first data acquiring section generates first data using the first propagation estimation value. The decoding section decodes a transmission signal encoded using a second propagation estimation value that is estimated by the communicating party using the first reference signal, to obtain second data using the first data.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: October 11, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Masayuki Orihashi, Yutaka Murakami, Katsuaki Abe, Akihiko Matsuoka