Patents by Inventor Jun Yamazaki

Jun Yamazaki 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: 12040042
    Abstract: An object of one embodiment of the present invention is to propose a memory device in which a period in which data is held is ensured and memory capacity per unit area can be increased. In the memory device of one embodiment of the present invention, bit lines are divided into groups, and word lines are also divided into groups. The word lines assigned to one group are connected to the memory cell connected to the bit lines assigned to the one group. Further, the driving of each group of bit lines is controlled by a dedicated bit line driver circuit of a plurality of bit line driver circuits. In addition, cell arrays are formed on a driver circuit including the above plurality of bit line driver circuits and a word line driver circuit. The driver circuit and the cell arrays overlap each other.
    Type: Grant
    Filed: January 25, 2023
    Date of Patent: July 16, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun Koyama, Shunpei Yamazaki
  • Publication number: 20240146580
    Abstract: An estimation system generates, from a value of a time series of an estimation object in a past period, a plurality of patterns of a transition of a value of the estimation object. Based on the plurality of generated patterns and a value of a time series of a factor in the past period, the estimation system specifies a dependency relationship between a transition pattern and a value of the factor and a transition pattern at a past (or future) time point and identifies a model in accordance with the specified dependency relationship. By inputting a value of a time series of the factor in a future period to the estimation model, the estimation system specifies a time series of a value in the future period of the estimation object using at least one transition pattern.
    Type: Application
    Filed: March 8, 2022
    Publication date: May 2, 2024
    Inventors: Masato UTSUMI, Tohru WATANABE, Kazuki NAMBA, Ikuo SHIGEMORI, Hiroshi IIMURA, Hiroaki OGAWA, Daisuke HAMABA, Jun YAMAZAKI
  • Publication number: 20230402846
    Abstract: A system generates a first tree structure representing a relation of a plurality of measurement data sets, and generates goodness-of-fit data based on at least a part of attribute data regarding one or more branch portions included in the first tree structure. The attribute data includes one or more attribute values at one or more points in time regarding each of one or more attribute items. The goodness-of-fit data includes goodness-of-fit for each attribute item regarding each branch portion. With regard to each attribute item for each branch portion, goodness-of-fit is a value calculated based on a parent node and two or more child nodes belonging to the relevant branch portion, and one or more attribute values corresponding to the relevant attribute item, and represents a degree that the relevant attribute item will fit as a base of a branch condition.
    Type: Application
    Filed: September 8, 2021
    Publication date: December 14, 2023
    Inventors: Kazuki NAMBA, Masato UTSUMI, Tohru WATANABE, Ikuo SHIGEMORI, Hiroshi IIMURA, Daisuke HAMABA, Dan ZHAO, Hiroaki OGAWA, Jun YAMAZAKI
  • Publication number: 20230027383
    Abstract: A system performs factor selection processing, which includes performing a factor selection operation for selecting one or two or more factors from one or a plurality of factors; factor filtering processing which includes: determining, about each of the one or the plurality of factors before the factor selection processing is performed, whether a factor value for prediction input to a prediction model is within a range of a plurality of factor values for specimen used to identify the prediction model; and excluding a factor, a result of the determination of which is false, and outputting a factor not excluded; and prediction processing which includes calculating the prediction value of the prediction target by inputting, to the prediction model, a factor value for prediction about each of one or more factors including the factor selected in the factor selection processing and not including the factor excluded in the factor filtering processing.
    Type: Application
    Filed: January 15, 2021
    Publication date: January 26, 2023
    Inventors: Masato UTSUMI, Tohru WATANABE, Ikuo SHIGEMORI, Tetsu ITO, Daisuke HAMABA, Jun YAMAZAKI
  • Patent number: 11214008
    Abstract: A three-dimensional object formation instruction apparatus receives information pertaining to distribution of a predetermined physical quantity in a three-dimensional space, and on the basis of the received information, determines a shape of a representation body representing the physical quantity, and then, on the basis of the received information, determines a position at which the representation body representing the physical quantity is to be arranged. The three-dimensional object formation instruction apparatus generates a three-dimensional object formation instruction including an instruction to form an object having the determined shape at the determined position, and outputs the generated instruction.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: January 4, 2022
    Inventor: Jun Yamazaki
  • Patent number: 11148693
    Abstract: A platoon traffic system includes a plurality of platoons including vehicles on and from which passengers board and exit, and an operation management apparatus setting an operation schedule including assignment of the vehicles to the plurality of platoons and management thereof. The vehicles in each of the platoons integrally operate in accordance with the operation schedule along a track including boarding and exiting points where passengers board and exit the vehicles The operation management apparatus accepts a boarding request for the vehicles, the request specifying the boarding and exiting points, and changes the operation schedule to reassign the vehicles belonging to the plurality of platoons, among the platoons based on the boarding request and numbers of passengers allowed to board the vehicles.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: October 19, 2021
    Assignee: HITACHI, LTD.
    Inventors: Hisanori Teshima, Kojin Yano, Shuichiro Sakikawa, Takahiro Matsushita, Jun Yamazaki
  • Patent number: 11133674
    Abstract: A system operation support device in a power system stabilizes the power system and has a predicted accident time system state calculation unit that receives measured data, a system topology, and a target accident type as inputs, and calculates a system state and a predicted accident time system state. A control menu calculation unit receives the results of the predicted accident time system state as inputs and calculates a control menu. A restoration control means calculation unit receives the result of the control menu calculation as an input and calculates a restoration control procedure. A restoration prevention control procedure calculation unit receives the result of the restoration control and a target restoration time parameter as inputs and performs a power generator output adjustment time simulation, a necessary prevention control amount calculation, and a prevention control procedure calculation. A display unit displays the restoration control procedure and the prevention control procedure.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: September 28, 2021
    Assignee: HITACHI, LTD.
    Inventors: Kenta Kirihara, Sumito Tobe, Masahiro Yatsu, Hiroo Horii, Jun Yamazaki
  • Patent number: 11101095
    Abstract: Controlling total emission current of an electron emitting construct in an x-ray emitting device by providing a cathode, providing multiple active areas each active area having a gated cone electron source, including multiple emitter tips arranged in an array, a gate electrode, and a gate interconnect lead connected to the gate electrode, providing an x-ray emitting construct comprising an anode, the anode being an x-ray target, situating the x-ray emitting construct facing the active areas face each other, selecting a set of active areas, and activating selected active areas by conductively connecting a voltage source to their associated the gate electrode interconnect lead.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: August 24, 2021
    Assignee: NANO-X IMAGING LTD.
    Inventors: Koichi Iida, Hidenori Kenmotsu, Jun Yamazaki, Hitoshi Masuya
  • Publication number: 20210248481
    Abstract: An object of the invention is to provide a data processing system that can appropriately determine data to be used for identification of a prediction model. The data processing system that performs prediction using a prediction model, includes: a selection unit that selects data to be used for identification of a prediction model from a storage unit that stores data; and a processing unit that identifies the prediction model by using the data selected by the selection unit. The selection unit selects, from the storage unit, predetermined first data, and second data of a type and/or condition different from the first data, based on a branch condition of structure data of a structural prediction model.
    Type: Application
    Filed: November 18, 2020
    Publication date: August 12, 2021
    Inventors: Tohru WATANABE, Masato UTSUMI, Ikuo SHIGEMORI, Tetsu ITO, Jun YAMAZAKI, Daisuke HAMABA, Hiroshi IIMURA
  • Publication number: 20210083475
    Abstract: A system operation support device in a power system stabilizes the power system and has a predicted accident time system state calculation unit that receives measured data, a system topology, and a target accident type as inputs, and calculates a system state and a predicted accident time system state. A control menu calculation unit receives the results of the predicted accident time system state as inputs and calculates a control menu. A restoration control means calculation unit receives the result of the control menu calculation as an input and calculates a restoration control procedure. A restoration prevention control procedure calculation unit receives the result of the restoration control and a target restoration time parameter as inputs and performs a power generator output adjustment time simulation, a necessary prevention control amount calculation, and a prevention control procedure calculation. A display unit displays the restoration control procedure and the prevention control procedure.
    Type: Application
    Filed: April 10, 2018
    Publication date: March 18, 2021
    Inventors: Kenta KIRIHARA, Sumito TOBE, Masahiro YATSU, Hiroo HORII, Jun YAMAZAKI
  • Publication number: 20200361503
    Abstract: A small number of vehicles are efficiently utilized to cope with a fluctuating demand. A platoon traffic system includes a plurality of platoons including vehicles 111 to 113 and 121 to 125 on and from which passengers board and exit, and an operation management apparatus 101 setting an operation schedule including assignment of the vehicles 111 to 113 and 121 to 125 to the plurality of platoons and managing operation of the plurality of platoons. The vehicles 111 to 113 and 121 to 125 in each of the platoons integrally operate in accordance with the operation schedule along a track including boarding and exiting points where passengers board and exit the vehicles 111 to 113 and 121 to 125, and addition and reduction of vehicles belonging to the platoon are enabled.
    Type: Application
    Filed: May 17, 2018
    Publication date: November 19, 2020
    Applicant: Hitachi, Ltd.
    Inventors: Hisanori TESHIMA, Kojin YANO, Shuichiro SAKIKAWA, Takahiro MATSUSHITA, Jun YAMAZAKI
  • Patent number: 10628896
    Abstract: A system stability monitoring device monitors the stability of a power system and is equipped with: a storage unit for storing spot information indicating the positional relationship between a plurality of measurement spots in the power system; a receiving unit for receiving time-series measurement information measured by a measuring device provided at each of the measurement spots; and a calculation unit for detecting the frequency components of the power fluctuation from the measurement information, selecting, based on the frequency components, measurement spot group candidates that are measurement spots among the plurality of measurement spots, obtaining the electrical distances between the measurement spot group candidates on the basis of the spot information, and categorizing the measurement spot group candidates into at least one measurement spot group on the basis of the electrical distances.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: April 21, 2020
    Assignee: HITACHI LTD.
    Inventors: Jun Yamazaki, Masahiro Yatsu, Sumito Tobe, Yasuo Sato, Osamu Tomobe, Eisuke Kuroda
  • Patent number: 10598702
    Abstract: Example implementations described herein are directed to detection of historical anomalous events that are similar to currently occurring events in a transmission power system based on phasor management unit (PMU) data to provide information to grid operators with online decision support. From the high-resolution time synchronized PMU data, the historical events can be quickly retrieved and compared to the currently occurring event so that operators can be provided with remedy actions that were attempted in response to the historical events. Utilization of PMU information for such decision support may compliment operation practices relying on supervisory control and data acquisition (SCADA) measurements by allowing a much fast response to the currently occurring event. Accurate identification of similar, historical events can advise grid operators of the cause of disturbances and provide ideas for response.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: March 24, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Norifumi Nishikawa, Jun Yamazaki, Mika Takata
  • Patent number: 10473700
    Abstract: A voltage stability monitoring device, which monitors voltage stability of a power system, produces a plurality of assumed change scenarios indicating a scenario of a change that is assumed based on at least one of a system configuration of the power system and a change of a tide state, calculates the voltage stability using the assumed change scenario, calculates a voltage stability margin indicating margin degree of the voltage stability, based on the voltage stability selects an assumed change scenario with high severity of the voltage stability for each assumed change scenario, based on the voltage stability margin calculates which buses in the power system are vulnerable buses that decrease voltage stability, based on the assumed change scenario which is selected, and changes a monitoring target of the voltage stability, based on information of the vulnerable bus.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: November 12, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Eisuke Kuroda, Yasuo Sato, Osamu Tomobe, Jun Yamazaki, Masahiro Yatsu, Kouichi Hara, Haruki Miyoshi
  • Patent number: 10461538
    Abstract: A system stabilization control device controls a control instrument within a power system on the basis of measurement information from a plurality of measurement points within the power system. The system stabilization control device includes an equipment information database storing information of system equipment interconnected with the power system; a control priority determining unit determining the control priority of the control instrument on the basis of the information of the system equipment; a control target determining unit determining a control target on the basis of the measurement information from the plurality of measurement points and the control priority; a destabilization time calculating unit calculating destabilization time of the power system from the measurement information from the plurality of measurement points; and a control time determining unit determining control time of the control instrument on the basis of the destabilization time and the information of the system equipment.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: October 29, 2019
    Assignee: HITACHI, LTD.
    Inventors: Jun Yamazaki, Osamu Tomobe, Eisuke Kuroda, Akira Tsubota, Sumito Tobe, Masahiro Yatsu
  • Patent number: 10371592
    Abstract: When vibration information calculated using measurement information is classified using a distance between measurement points which is calculated using the point information, even in a case in which a plurality of vibration modes with close vibration frequencies are present at the same time, stability determination at a high speed and a high accuracy is realized. A system stability monitoring apparatus which monitors system stability of a power system includes a measurement information collecting unit that collects measurement information of a plurality of points in the power system, a vibration analyzing unit that calculates vibration information indicating vibration of a system state in the plurality of points using the measurement information, an information storage unit that stores point information including position information of the plurality of points, and a vibration classifying unit that classifies the vibration information based on the point information.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: August 6, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Jun Yamazaki, Masahiro Yatsu, Sumito Tobe, Yasuo Sato, Osamu Tomobe, Eisuke Kuroda
  • Publication number: 20190232567
    Abstract: A three-dimensional object formation instruction apparatus receives information pertaining to distribution of a predetermined physical quantity in a three-dimensional space, and on the basis of the received information, determines a shape of a representation body representing the physical quantity, and then, on the basis of the received information, determines a position at which the representation body representing the physical quantity is to be arranged. The three-dimensional object formation instruction apparatus generates a three-dimensional object formation instruction including an instruction to form an object having the determined shape at the determined position, and outputs the generated instruction.
    Type: Application
    Filed: October 4, 2017
    Publication date: August 1, 2019
    Inventors: Jun YAMAZAKI, Hikaru KOUTA, Norio SENDA, Shinji NAGASHIRO, Ryota KOGA, Yuki FURUKAWA
  • Publication number: 20190189383
    Abstract: Controlling total emission current of an electron emitting construct in an x-ray emitting device by providing a cathode, providing multiple active areas each active area having a gated cone electron source, including multiple emitter tips arranged in an array, a gate electrode, and a gate interconnect lead connected to the gate electrode, providing an x-ray emitting construct comprising an anode, the anode being an x-ray target, situating the x-ray emitting construct facing the active areas face each other, selecting a set of active areas, and activating selected active areas by conductively connecting a voltage source to their associated the gate electrode interconnect lead.
    Type: Application
    Filed: February 26, 2019
    Publication date: June 20, 2019
    Inventors: KOICHI IIDA, HIDENORI KENMOTSU, JUN YAMAZAKI, HITOSHI MASUYA
  • Patent number: 10242836
    Abstract: The disclosure relates to an image capture device comprising an electron receiving construct and an electron emitting construct, and further comprising an inner gap providing an unobstructed space between the electron emitting construct and the electron receiving construct. The disclosure further relates to an x-ray emitting device comprising an x-ray emitting construct and an electron emitting construct, said x-ray emitting construct comprising an anode, the anode being an x-ray target, wherein the x-ray emitting device may comprise an inner gap providing an unobstructed space between the electron emitting construct and the x-ray emitting construct. The disclosure further relates to an x-ray imaging system comprising an image capture device and an x-ray emitting device.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 26, 2019
    Assignee: NANOX IMAGING PLC
    Inventors: Koichi Iida, Hidenori Kenmotsu, Jun Yamazaki, Hitoshi Masuya
  • Patent number: 10222196
    Abstract: The present invention monitors an electric power system using a time-series measurement value including abnormality.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 5, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Jun Yamazaki, Masahiro Yatsu, Sumito Tobe, Osamu Tomobe, Tatsuki Inuduka