Patents by Inventor Masahiko Nagata

Masahiko Nagata 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: 20220336166
    Abstract: A switch device includes: an operation unit including a first switch, a second switch, a first resistor, a second resistor, and a first terminal; and a control unit including a second terminal coupled to the first terminal. A series circuit of the first switch and the first resistor and a series circuit of the second switch and the second resistor are coupled between the first terminal and a ground. The control unit monitors a potential of the first terminal which changes in response to on/off of the first and second switches via the second terminal, and determines the operation state of each switch based on the potential. A contact of the first switch is configured of a contact in which a resistance value between contacts at the time of opening and closing changes more sharply as compared with a contact of the second switch.
    Type: Application
    Filed: April 19, 2022
    Publication date: October 20, 2022
    Applicant: NIDEC MOBILITY CORPORATION
    Inventors: Tatsuki NAGATA, Katsunori KIGOSHI, So FUJIOKA, Atsushi FUJITA, Masahiko HARA, Yuki YAMAMOTO
  • Publication number: 20220268082
    Abstract: A power window device includes a control unit configured to monitor a first potential at one end of a first circuit including first and second switches turned on by manual opening and closing operations for a window, respectively, and a second potential at one end of a second circuit including a third switch turned on by an automatic opening or closing operation. The control unit is configured to output a manual window opening signal to a motor drive unit when the first potential is a potential at a time of the first switch being turned on; output a manual window closing signal when the first potential is a potential at a time of the second switch being turned on; and output an automatic window opening or closing signal when the second potential is a potential at a time of the third switch being turned on.
    Type: Application
    Filed: February 10, 2022
    Publication date: August 25, 2022
    Applicant: NIDEC MOBILITY CORPORATION
    Inventors: Atsushi FUJITA, Katsunori KIGOSHI, So FUJIOKA, Tatsuki NAGATA, Yuki YAMAMOTO, Masahiko HARA
  • Patent number: 11423286
    Abstract: A technology that can enhance the computing performance of a computing system using reservoir computing (RC), includes a computing system which performs computation using a recurrent neural network (RNN) including an input unit, a reservoir unit, and an output unit. The reservoir unit includes a plurality of nodes circularly connected to each other. The circular connection has a weight matrix for determining a weight between the nodes of the plurality of nodes, in which a weight between the nodes closely arranged on the circle is larger than a weight between the nodes arranged away from each other on the circle. The plurality of nodes each have a g value that is a parameter for designating nonlinearity of an activation function of each of the nodes, and that is set so as to periodically change in a direction on the circle.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: August 23, 2022
    Assignee: HITACHI, LTD.
    Inventors: Sanato Nagata, Tadashi Okumura, Masahiko Ando
  • Patent number: 11423299
    Abstract: A device includes an input unit, a nonlinear converter, and an output unit. The nonlinear converter and the output unit are connected via a connection path having a delay mechanism that realizes a feedback loop giving a delay to a signal. The delay mechanism includes a conversion mechanism that generates a plurality of signals with different delay times using the signal output from the nonlinear converter, generates a new signal by superimposing the plurality of signals, and outputs the generated signal to the output unit.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: August 23, 2022
    Assignee: Hitachi, Ltd.
    Inventors: Tadashi Okumura, Mitsuharu Tai, Masahiko Ando, Sanato Nagata, Norifumi Kameshiro
  • Publication number: 20220251895
    Abstract: A power window device includes a control unit configured to: monitor independently a first potential at one ends of a first switch circuit including a window closing switch and a second switch circuit including a window opening switch and a second potential at one end of a submersion detection sensor, and determine that submersion has occurred when the second potential is in a submersion potential range. During a normal time, the control unit outputs a window closing command signal when the first potential is a potential at a time of the window closing switch being operated, and outputs a window opening command signal when the first potential is a potential at a time of the window opening switch being operated. At a time of submersion, the control unit does not output the window closing command signal, and outputs the window opening command signal.
    Type: Application
    Filed: February 4, 2022
    Publication date: August 11, 2022
    Applicant: NIDEC MOBILITY CORPORATION
    Inventors: So FUJIOKA, Katsunori KIGOSHI, Atsushi FUJITA, Tatsuki NAGATA, Yuki YAMAMOTO, Masahiko HARA
  • Publication number: 20220243519
    Abstract: A power window device includes a control unit configured to monitor a first potential at one end of a first switch circuit including a window closing switch and a second potential at one end of a second switch circuit including a window opening switch, and determine that submersion has occurred when the first or second potential is in a first or second submersion potential range. During a normal time, the control unit outputs a window closing command signal when the first potential is a potential at a time of the window closing switch being operated, and outputs a window opening command signal when the second potential is a potential at a time of the window opening switch being operated. At a time of submersion, the control unit does not output the window closing command signal, and outputs the window opening command signal.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 4, 2022
    Applicant: NIDEC MOBILITY CORPORATION
    Inventors: Atsushi FUJITA, Katsunori KIGOSHI, So FUJIOKA, Tatsuki NAGATA, Yuki YAMAMOTO, Masahiko HARA
  • Patent number: 11396942
    Abstract: A shift range control device includes a signal receiver, an abnormality monitor, and a drive controller. The signal receiver acquires an encoder signal from an encoder capable of outputting three or more phase encoder signals having different phases. The abnormality monitor monitors an abnormality of the encoder. The drive controller controls drive of a motor by switching an energized phase of a motor winding so that a rotation position of the motor becomes a target rotation position according to a target shift range. When the abnormality of the encoder is detected, the driver controller drives the motor by faulty phase identification control to identify a faulty phase that is a phase in which an abnormality of the encoder signal occurs, and a normal phase in which the encoder signal is normal.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: July 26, 2022
    Assignees: DENSO CORPORATION, HONDA MOTOR CO., LTD.
    Inventors: Hiromitsu Nagata, Koji Sakaguchi, Jun Yamada, Masahiko Akiyama, Masashi Misawa, Kenshi Masuo
  • Patent number: 11003509
    Abstract: A lock control apparatus includes one or more memories, and one or more processors configured to perform setting of, as a target node, each of one or more child nodes other than eldest child nodes among child nodes relating to parent nodes in each of layers of data structure formed by a tree structure, when a first process for first data associated with a first node in the data structure proceeds in a direction from a parent node to a child node, perform determination of whether the first node is the target node, and perform lock of the first node when the first node is the target node.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: May 11, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Takuya Masaki, Kiichi Yamada, Masahiko Nagata, Yoshihiro Yasuoka, Hisashi Sugawara
  • Patent number: 10892921
    Abstract: The present invention provides a semiconductor device capable of detecting illegal data in secret data communications. A semiconductor device that transmits and receives data includes a specific bit extraction block that extracts first data from transmission data in accordance with a first rule, another specific bit extraction block that extracts second data from reception data in accordance with a second rule, and a bit pattern accumulation buffer that accumulates the first data and the second data. A scramble pattern used when scrambling the transmission data is generated by a combination of the first data and the second data accumulated in the bit pattern accumulation buffer.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: January 12, 2021
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Masahiko Nagata, Chizuru Matsunaga, Tsukasa Yobo
  • Patent number: 10417214
    Abstract: A non-transitory computer-readable storage medium storing a database control program that causes a computer to execute a process, the process including when an update processing for a value of a data item included in a record stored in a database occurs, generating a first record and a second record, the first record including the data item having a value updated by the update processing, the second record including the data item having a value not updated by the update processing, and when a new update processing occurs for the record for which the update processing occurred, performing the new update processing for both of the first record and the second record.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: September 17, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Kouji Takahashi, Kiichi Yamada, Masahiko Nagata
  • Patent number: 10311157
    Abstract: A method includes: upon receipt of a request of update processing for a first record including a numerical data item in a database, generating, by a processor, a second record by duplicating the first record while a value corresponding to an update content of the update processing is set to the numerical data item, the update processing being processing of updating the value of the numerical data item according to the update content; and executing the update processing for the second record in response to the request.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: June 4, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Kiichi Yamada, Naohiro Itou, Masahiko Nagata, Mitsuhiro Kinomura
  • Publication number: 20190163542
    Abstract: A lock control apparatus includes one or more memories, and one or more processors configured to perform setting of, as a target node, each of one or more child nodes other than eldest child nodes among child nodes relating to parent nodes in each of layers of data structure formed by a tree structure, when a first process for first data associated with a first node in the data structure proceeds in a direction from a parent node to a child node, perform determination of whether the first node is the target node, and perform lock of the first node when the first node is the target node.
    Type: Application
    Filed: November 14, 2018
    Publication date: May 30, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Takuya Masaki, Kiichi YAMADA, Masahiko Nagata, Yoshihiro Yasuoka, Hisashi Sugawara
  • Publication number: 20190132162
    Abstract: The present invention provides a semiconductor device capable of detecting illegal data in secret data communications. A semiconductor device that transmits and receives data includes a specific bit extraction block that extracts first data from transmission data in accordance with a first rule, another specific bit extraction block that extracts second data from reception data in accordance with a second rule, and a bit pattern accumulation buffer that accumulates the first data and the second data. A scramble pattern used when scrambling the transmission data is generated by a combination of the first data and the second data accumulated in the bit pattern accumulation buffer.
    Type: Application
    Filed: August 10, 2018
    Publication date: May 2, 2019
    Inventors: Masahiko Nagata, Chizuru Matsunaga, Tsukasa Yobo
  • Patent number: 10223405
    Abstract: A processor determines whether to generate a first entry, based on whether a second entry is in a storage, for each conditional expression included in retrieval expressions. The first entry includes, in association with a first identifier, a first path included in the conditional expression. The second entry includes, a second path identical to the first path in association with a second identifier. The processor determines whether to generate a third entry based on whether a fourth entry is in the storage. The third entry includes a first set and a fifth identifier in association with a third identifier. The first set is included in the conditional expression and includes a first value and a first operator. The fifth identifier is the first identifier or the second identifier. The fourth entry includes a second set identical to the first set and the fifth identifier in association with a fourth identifier.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: March 5, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Yasunobu Moriyama, Masahiko Nagata, Kiichi Yamada
  • Publication number: 20170262512
    Abstract: A search processing method includes: receiving, by a computer, a search condition; determining, based on first information which associates a first attribute value of a first attribute, which is unique, with an attribute value group including a second attribute value of one or more second attributes other than the first attribute, whether the attribute value group associated with the first attribute value satisfies the search condition for each of the first attribute value; and outputting the first attribute value associated with the attribute value group determined to satisfy the search condition.
    Type: Application
    Filed: December 16, 2016
    Publication date: September 14, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Yasunobu Moriyama, Masahiko Nagata
  • Patent number: 9619516
    Abstract: A data extraction device generates, based on master information and an extraction condition, a determination result indicating whether the master information is an extraction target. When stream data is received, the data extraction device determined, using the determination result, whether the master information that is specified based on the received stream data is to be extracted.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: April 11, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Yasunobu Moriyama, Masahiko Nagata, Mitsuhiro Kinomura, Yoshihiro Yasuoka, Kiichi Yamada, Wakana Yamada
  • Publication number: 20170097954
    Abstract: A processor determines whether to generate a first entry, based on whether a second entry is in a storage, for each conditional expression included in retrieval expressions. The first entry includes, in association with a first identifier, a first path included in the conditional expression. The second entry includes, a second path identical to the first path in association with a second identifier. The processor determines whether to generate a third entry based on whether a fourth entry is in the storage. The third entry includes a first set and a fifth identifier in association with a third identifier. The first set is included in the conditional expression and includes a first value and a first operator. The fifth identifier is the first identifier or the second identifier. The fourth entry includes a second set identical to the first set and the fifth identifier in association with a fourth identifier.
    Type: Application
    Filed: September 16, 2016
    Publication date: April 6, 2017
    Applicant: FUJITSU LIMITED
    Inventors: YASUNOBU MORIYAMA, MASAHIKO NAGATA, KIICHI YAMADA
  • Publication number: 20170068701
    Abstract: A non-transitory computer-readable storage medium storing a database control program that causes a computer to execute a process, the process including when an update processing for a value of a data item included in a record stored in a database occurs, generating a first record and a second record, the first record including the data item having a value updated by the update processing, the second record including the data item having a value not updated by the update processing, and when a new update processing occurs for the record for which the update processing occurred, performing the new update processing for both of the first record and the second record.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 9, 2017
    Inventors: Kouji Takahashi, Kiichi Yamada, Masahiko Nagata
  • Publication number: 20160055152
    Abstract: A method includes: upon receipt of a request of update processing for a first record including a numerical data item in a database, generating, by a processor, a second record by duplicating the first record while a value corresponding to an update content of the update processing is set to the numerical data item, the update processing being processing of updating the value of the numerical data item according to the update content; and executing the update processing for the second record in response to the request.
    Type: Application
    Filed: July 28, 2015
    Publication date: February 25, 2016
    Applicant: Fujitsu Limited
    Inventors: Kiichi YAMADA, Naohiro ltou, Masahiko Nagata, Mitsuhiro Kinomura
  • Publication number: 20140344268
    Abstract: A data extraction device generates, based on master information and an extraction condition, a determination result indicating whether the master information is an extraction target. When stream data is received, the data extraction device determined, using the determination result, whether the master information that is specified based on the received stream data is to be extracted.
    Type: Application
    Filed: April 25, 2014
    Publication date: November 20, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Yasunobu Moriyama, Masahiko Nagata, Mitsuhiro Kinomura, Yoshihiro Yasuoka, Kiichi YAMADA, Wakana Yamada