Patents by Inventor Kei KITAMURA

Kei KITAMURA 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: 20240137128
    Abstract: An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode information, which is combinations of a plurality of parameters concerning transmission performance, the transmission mode information being a plurality of kinds of the transmission mode information common to the transmission performance of the optical transmission device and the optical reception device, a signal transmission unit that transmits, to the optical reception device, a signal modulated based on the selected transmission mode information, and a signal reception unit that receives the signal and modulates the received signal based on the transmission mode information selected by the transmission-mode selection unit.
    Type: Application
    Filed: December 21, 2022
    Publication date: April 25, 2024
    Inventors: Tetsuro Inui, Hideki Nishizawa, Seiji Okamoto, Akira Hirano, Shokei Kobayashi, Fumikazu Inuzuka, Seiki Kuwabara, Takafumi Tanaka, Kei Kitamura, Takuya Oda
  • Patent number: 11923862
    Abstract: A first reception processing unit performs a process of receiving a first signal transmitted on a first transmission line, a second reception processing unit performs a process of receiving a second signal transmitted on a second transmission line, and an output speed control unit controls output speeds of the first signal and the second signal subjected to the reception process. A system switching unit selects and outputs the first signal or the second signal subjected to a reception process, and an output processing unit performs a process for output to another apparatus on the output from the system switching unit. A reception side clock output unit outputs a clock signal giving a processing timing of each process, and a clock frequency control unit adjusts a frequency of the clock signal giving the processing timing to the output processing unit.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: March 5, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Fumikazu Inuzuka, Kei Kitamura, Akira Hirano, Masahito Tomizawa, Takuya Ohara
  • Publication number: 20240069190
    Abstract: A wind speed prediction device includes processing circuitry configured to acquire a scattering signal that is each of a plurality of beams after being emitted to space and scattered in the space; variably set a range bin width as distance resolution of each of the acquired scattering signals in accordance with an elevation angle of each of the beams emitted to the space, and calculate at least one Doppler frequency of at least one range bin corresponding to a two-dimensional plane including an observation region from the each of the scattering signals; estimate at least one wind speed distribution in the two-dimensional plane from the plurality of Doppler frequencies calculated; and predict a wind speed in the observation region from the at least one wind speed distribution in the two-dimensional plane using a two-dimensional Navier-Stokes equation.
    Type: Application
    Filed: November 6, 2023
    Publication date: February 29, 2024
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takayuki KITAMURA, Kei SUWA, Shumpei KAMEYAMA, Hiroshi SAKAMAKI, Masaharu IMAKI
  • Patent number: 11916685
    Abstract: A transmission apparatus includes redundant first communication devices configured to communicate with a communication apparatus provided in a first network, and redundant second communication devices configured to communicate with a communication apparatus provided in a second network. The second communication devices include respective first ends that are ends of redundant communication paths of the first communication devices, and the first communication devices include respective second ends that are ends of redundant communication paths of the second communication devices.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: February 27, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kei Kitamura, Fumikazu Inuzuka, Akira Hirano, Masahito Tomizawa, Takuya Ohara
  • Patent number: 11915769
    Abstract: A non-volatile memory device includes a control circuit configured to connect to a bit line that is connected to one or more non-volatile memory cells. The control circuit includes a first plurality of data latches connected to a first local data bus to store first program-verify pass/fail bits and a second plurality of data latches connected to a second local data bus to store second program-verify pass/fail bits for second non-volatile memory cells. The non-volatile memory device further includes a shared isolation latch and one or more interface circuits connected to the first local data bus and the second local data bus. The one or more interface circuits are configured to selectively block the first program-verify pass/fail bits from the first plurality of latches and the second program-verify pass/fail bits from the second plurality of latches according to an indicator bit stored in the shared isolation latch.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: February 27, 2024
    Assignee: SanDisk Technologies LLC
    Inventors: Kei Kitamura, Iris Lu, Tai-Yuan Tseng
  • Publication number: 20240056179
    Abstract: A transmission apparatus includes a first communication unit, a second communication unit, a detection unit, a control unit, and a selection unit. The first communication unit uses a first path for communication, when electric power is supplied. The second communication unit uses a second path for communication, when electric power is supplied. The detection unit detects a fault predictive sign. The control unit supplies no electric power to the second communication unit when the detection unit does not detect the fault predictive sign. The control unit starts supplying electric power to the second communication unit and performs normality confirmation of the second path when the detection unit detects the fault predictive sign, before switching from the first path to the second path.
    Type: Application
    Filed: October 30, 2019
    Publication date: February 15, 2024
    Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kei KITAMURA, Fumikazu INUZUKA, Kengo SHINTAKU, Takafumi TANAKA, Takuya ODA
  • Publication number: 20230368852
    Abstract: A non-volatile memory device includes a control circuit configured to connect to a bit line that is connected to one or more non-volatile memory cells. The control circuit includes a first plurality of data latches connected to a first local data bus to store first program-verify pass/fail bits and a second plurality of data latches connected to a second local data bus to store second program-verify pass/fail bits for second non-volatile memory cells. The non-volatile memory device further includes a shared isolation latch and one or more interface circuits connected to the first local data bus and the second local data bus. The one or more interface circuits are configured to selectively block the first program-verify pass/fail bits from the first plurality of latches and the second program-verify pass/fail bits from the second plurality of latches according to an indicator bit stored in the shared isolation latch.
    Type: Application
    Filed: May 16, 2022
    Publication date: November 16, 2023
    Applicant: SanDisk Technologies LLC
    Inventors: Kei Kitamura, Iris Lu, Tai-Yuan Tseng
  • Patent number: 11776640
    Abstract: A method for programming a non-volatile memory structure, comprises initiating a two-dimensional fractional number of bits-per-cell programming scheme of a plurality of memory cells, wherein the memory structure comprises: (1) a first memory array comprising a first population of memory cells and the associated peripheral circuitry disposed below the first population of cells, (2) a second memory array positioned above the first memory array and comprising a second population of memory cells and associated peripheral circuitry disposed above the second population of cells, and (3) a data bus tap electrically coupling the first and second memory arrays. Further, the method comprises: (1) storing input data in data latches associated with the first array and with the second array. Additionally, the method comprises converting the stored data using data conversion logic implemented by a data path circuit of the first and second arrays and rewriting the converted data to the latches.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: October 3, 2023
    Assignee: SanDisk Technologies LLC
    Inventors: Kei Kitamura, Yuki Fujita, Kyosuke Matsumoto, Masahiro Kano, Minoru Yamashita, Ryuji Yamashita, Shuzo Otsuka
  • Publication number: 20230175163
    Abstract: Provided is a technique for appropriately handling a substrate holder depending on a use state of the substrate holder. The substrate holder for holding a substrate that is a plating target in a plating apparatus is suggested. The substrate holder includes an RFID tag, and the RFID tag includes a storage region in which a use attribute is stored, the use attribute including an attribute indicating a state of being used for plating processing.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 8, 2023
    Inventors: Masayuki FUJIKI, Kei KITAMURA
  • Publication number: 20230131117
    Abstract: A method for programming a non-volatile memory structure, comprises initiating a two-dimensional fractional number of bits-per-cell programming scheme of a plurality of memory cells, wherein the memory structure comprises: (1) a first memory array comprising a first population of memory cells and the associated peripheral circuitry disposed below the first population of cells, (2) a second memory array positioned above the first memory array and comprising a second population of memory cells and associated peripheral circuitry disposed above the second population of cells, and (3) a data bus tap electrically coupling the first and second memory arrays. Further, the method comprises: (1) storing input data in data latches associated with the first array and with the second array. Additionally, the method comprises converting the stored data using data conversion logic implemented by a data path circuit of the first and second arrays and rewriting the converted data to the latches.
    Type: Application
    Filed: October 27, 2021
    Publication date: April 27, 2023
    Applicant: SanDisk Technologies LLC
    Inventors: Kei Kitamura, Yuki Fujita, Kyosuke Matsumoto, Masahiro Kano, Minoru Yamashita, Ryuji Yamashita, Shuzo Otsuka
  • Publication number: 20230110995
    Abstract: A method for programming a non-volatile memory structure, wherein the method comprises initiating a two-dimensional fractional number of bits-per-cell programming scheme with respect to at least a first memory cell and a second memory cell of a plurality of memory cells of the memory structure, wherein the memory structure comprises: (1) a first memory array that comprises a first population of the plurality of memory cells and associated peripheral circuitry disposed below the first population of the plurality of memory cells, (2) a second memory array that is positioned above the first memory array and comprises a second population of the plurality of memory cells and the associated peripheral circuitry that is disposed above the second population of the plurality of memory cells, and (3) a data bus tap electrically coupling the first memory array and the second memory array.
    Type: Application
    Filed: September 27, 2021
    Publication date: April 13, 2023
    Applicant: SanDisk Technologies LLC
    Inventors: Yuki Fujita, Kei Kitamura, Kyosuke Matsumoto, Masahiro Kano, Minoru Yamashita, Ryuji Yamashita, Shuzo Otsuka
  • Patent number: 11546064
    Abstract: An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode information, which is combinations of a plurality of parameters concerning transmission performance, the transmission mode information being a plurality of kinds of the transmission mode information common to the transmission performance of the optical transmission device and the optical reception device, a signal transmission unit that transmits, to the optical reception device, a signal modulated based on the selected transmission mode information, and a signal reception unit that receives the signal and modulates the received signal based on the transmission mode information selected by the transmission-mode selection unit.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: January 3, 2023
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Tetsuro Inui, Hideki Nishizawa, Seiji Okamoto, Akira Hirano, Shokei Kobayashi, Fumikazu Inuzuka, Seiki Kuwabara, Takafumi Tanaka, Kei Kitamura, Takuya Oda
  • Publication number: 20220345398
    Abstract: A transfer device includes a detection unit configured to detect a sign of a failure in a link between transfer devices, and a management unit configured to update a routing table to lower a priority of a path via the link when the sign of the failure is detected by the detection unit.
    Type: Application
    Filed: September 30, 2019
    Publication date: October 27, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kengo SHINTAKU, Shokei KOBAYASHI, Fumikazu INUZUKA, Kei KITAMURA, Takuya ODA, Takafumi TANAKA
  • Publication number: 20220321210
    Abstract: A transmission apparatus includes a control unit for carrying out processing to secure a resource for a standby system path in response to detection of a sign of failure in an active system path.
    Type: Application
    Filed: August 5, 2019
    Publication date: October 6, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kei KITAMURA, Fumikazu INUZUKA, Kengo SHINTAKU, Takuya ODA, Takafumi TANAKA, Masahito TOMIZAWA
  • Publication number: 20220109449
    Abstract: A first reception processing unit performs a process of receiving a first signal transmitted on a first transmission line, a second reception processing unit performs a process of receiving a second signal transmitted on a second transmission line, and an output speed control unit controls output speeds of the first signal and the second signal subjected to the reception process. A system switching unit selects and outputs the first signal or the second signal subjected to a reception process, and an output processing unit performs a process for output to another apparatus on the output from the system switching unit. A reception side clock output unit outputs a clock signal giving a processing timing of each process, and a clock frequency control unit adjusts a frequency of the clock signal giving the processing timing to the output processing unit.
    Type: Application
    Filed: December 4, 2019
    Publication date: April 7, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Fumikazu INUZUKA, Kei KITAMURA, Akira HIRANO, Masahito TOMIZAWA, Takuya OHARA
  • Publication number: 20220006722
    Abstract: A transmission apparatus performs communication with a transmission side transmission apparatus via a transmission path of an active system and a transmission path of a standby system. The transmission apparatus includes: a memory configured to have a capacity that is as large as delay caused due to a maximum path difference between the transmission path of the active system and the transmission path of the standby system is allowable; and a memory connection control unit configured to switch connection of the memory and cause a signal of the transmission path of the active system or the transmission path of the standby system to be accumulated in the memory.
    Type: Application
    Filed: November 7, 2019
    Publication date: January 6, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kei KITAMURA, Fumikazu INUZUKA, Akira HIRANO, Masahito TOMIZAWA, Takuya OHARA
  • Publication number: 20220006577
    Abstract: A transmission apparatus includes redundant first communication devices configured to communicate with a communication apparatus provided in a first network, and redundant second communication devices configured to communicate with a communication apparatus provided in a second network. The second communication devices include respective first ends that are ends of redundant communication paths of the first communication devices, and the first communication devices include respective second ends that are ends of redundant communication paths of the second communication devices.
    Type: Application
    Filed: November 18, 2019
    Publication date: January 6, 2022
    Inventors: Kei Kitamura, Fumikazu INUZUKA, Akira Hirano, Masahito TOMIZAWA, Takuya OHARA
  • Patent number: 11165497
    Abstract: There is provided an optical transmission system in which a plurality of optical transmission and reception apparatuses perform 1-to-N transmission and reception of optical signals (N is an integer equal to or greater than 1), the optical transmission system being configured to select a communication condition that includes at least a modulation scheme or a baud rate and is a communication condition when each of the optical transmission and reception apparatuses performs transmission and reception in accordance with a transmission line condition that is between any one first optical transmission and reception apparatus and each of second optical transmission and reception apparatuses, which are N grounds, other than the first optical transmission and reception apparatus.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: November 2, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Fumikazu Inuzuka, Shokei Kobayashi, Akira Hirano, Wataru Kawakami, Tetsuro Inui, Seiki Kuwabara, Kei Kitamura, Takafumi Tanaka, Takuya Oda, Hideki Nishizawa, Seiji Okamoto
  • Publication number: 20210314067
    Abstract: An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode information, which is combinations of a plurality of parameters concerning transmission performance, the transmission mode information being a plurality of kinds of the transmission mode information common to the transmission performance of the optical transmission device and the optical reception device, a signal transmission unit that transmits, to the optical reception device, a signal modulated based on the selected transmission mode information, and a signal reception unit that receives the signal and modulates the received signal based on the transmission mode information selected by the transmission-mode selection unit.
    Type: Application
    Filed: June 18, 2019
    Publication date: October 7, 2021
    Inventors: Tetsuro Inui, Hideki Nishizawa, Seiji Okamoto, Akira Hirano, Shokei Kobayashi, Fumikaza Inuzuka, Seiki Kuwabara, Takafumi Tanaka, Kei Kitamura, Takuya Oda
  • Patent number: 11126132
    Abstract: A developing device includes a case, a developer holder, a suction duct and a carrier catcher. The case accommodates a developer containing a toner and a carrier. The developer holder is disposed so as to face an image holder disposed outside the case and supplies the developer to the image holder. The suction duct sucks and collects a scattered toner floating in a space around the developer holder. The carrier catcher is formed in a vertical direction and disposed on a lower surface of a path of the suction duct.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: September 21, 2021
    Assignee: KONICA MINOLTA, INC.
    Inventor: Kei Kitamura