Patents by Inventor Keita Sasaki

Keita Sasaki 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: 11959545
    Abstract: A vehicle control device includes a processor and memory. The memory stores relation-defining data for defining a relation between a state of a vehicle and an action variable that is a variable relating to operations of a transmission installed in the vehicle. The processor is configured to execute acquisition processing, operation processing, reward calculation processing, updating processing, counting processing, and limiting processing. The processor is configured to output the relation-defining data updated so that an expected income is increased when the transmission is operated following the relation-defining data, based on an updating map.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: April 16, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Bunazawa, Atsushi Tabata, Koichi Okuda, Ken Imamura, Kota Fujii, Keita Sasaki
  • Publication number: 20240094349
    Abstract: A light detector according to one embodiment, includes a substrate. The substrate includes a first semiconductor layer, an insulating layer, and a second semiconductor layer. The insulating layer is located on the first semiconductor layer. The second semiconductor layer is located on the insulating layer. The second semiconductor layer includes a photoelectric conversion part. The photoelectric conversion part includes a first semiconductor region and a second semiconductor region. The substrate includes a void and a trench. The void is positioned below the photoelectric conversion part and between the first semiconductor layer and the second semiconductor layer. The trench surrounds the photoelectric conversion part. A lower end of the trench is positioned in the second semiconductor layer. The photoelectric conversion part is electrically connected with an upper surface side of the substrate via a portion below the trench.
    Type: Application
    Filed: February 15, 2023
    Publication date: March 21, 2024
    Inventors: Keita SASAKI, Mariko SHIMIZU, Kazuhiro SUZUKI
  • Publication number: 20240072191
    Abstract: A light detector includes a semiconductor layer and a light-receiving element. The semiconductor layer is of a first conductivity type. The light-receiving element includes a first semiconductor region, a second semiconductor region, a third semiconductor region, and a fourth semiconductor region. The first semiconductor region is of a second conductivity type. The second semiconductor region is located between the first semiconductor region and the semiconductor layer. The second semiconductor region is of the first conductivity type and contacts the first semiconductor region. The third semiconductor region is located between the second semiconductor region and the semiconductor layer. The third semiconductor region is of the second conductivity type. The fourth semiconductor region is located between the third semiconductor region and the semiconductor layer.
    Type: Application
    Filed: February 24, 2023
    Publication date: February 29, 2024
    Inventors: Mariko SHIMIZU, Kazuhiro SUZUKI, Ikuo FUJIWARA, Ryoma KANEKO, Keita SASAKI
  • Publication number: 20230406307
    Abstract: An electronic control unit carries out deceleration fuel cutoff for stopping fuel injection in an engine, and deceleration lockup for engaging a lockup clutch, at the time of deceleration of a vehicle. The electronic control unit then ends deceleration fuel cutoff and deceleration lockup upon fulfillment of a recovery condition. On the other hand, when a request to restrain heat-up of a filter device is made before fulfillment of the recovery condition, the electronic control unit stops deceleration fuel cutoff, but continues deceleration lockup.
    Type: Application
    Filed: April 13, 2023
    Publication date: December 21, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji NAGATA, Keita SASAKI
  • Patent number: 11840229
    Abstract: An electronic control unit carries out deceleration fuel cutoff for stopping fuel injection in an engine, and deceleration lockup for engaging a lockup clutch, at the time of deceleration of a vehicle. The electronic control unit then ends deceleration fuel cutoff and deceleration lockup upon fulfillment of a recovery condition, On the other hand, when a request to restrain heat-up of a filter device is made before fulfillment of the recovery condition, the electronic control unit stops deceleration fuel cutoff, but continues deceleration lockup.
    Type: Grant
    Filed: April 13, 2023
    Date of Patent: December 12, 2023
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koji Nagata, Keita Sasaki
  • Patent number: 11818333
    Abstract: An imaging device according to an embodiment of the present disclosure includes a pixel array including a plurality of pixels, a scanning control section that controls scanning of the plurality of pixels, and a readout control section that controls reading of the plurality of pixels. The imaging device further includes a first waveform generation part that generates a plurality of control signals for controlling of at least one of the scanning control section or the readout control section, a second waveform generation part that generates a plurality of reference signals, and a failure detection section that detects a failure of the first waveform generation part or the second waveform generation part on a basis of comparison between the plurality of control signals and the plurality of reference signals.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 14, 2023
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Keita Sasaki, Naoki Kawazu, Masaki Murozuka, Yuichi Motohashi
  • Publication number: 20230336867
    Abstract: Provided is an imaging device that includes an imaging unit that performs an imaging operation, a data generator that generates first power supply voltage data corresponding to a first power supply voltage and a flag generation section that generates a flag signal for the first power supply voltage by comparing the first power supply voltage data and first reference data. The first power supply voltage is supplied to the imaging unit.
    Type: Application
    Filed: June 20, 2023
    Publication date: October 19, 2023
    Inventors: NAOKI KAWAZU, KEITA SASAKI, TAKUMI OKA, YUICHI MOTOHASHI, ATSUSHI SUZUKI
  • Publication number: 20230299103
    Abstract: A light detector according to one embodiment, includes an element region, a light concentrator, a structure part and a light-shielding part. The element region includes a first semiconductor region of a first conductivity type, and a second semiconductor region of a second conductivity type. The light concentrator is separated from the element region in a first direction. The light concentrator is configured to concentrate light incident on the light concentrator. The structure part is arranged with the element region in a direction crossing the first direction. The structure part has a different refractive index from the element region. The light-shielding part is located between the element region and the light concentrator. The light-shielding part includes an opening. At least a portion of the light incident on the light concentrator is able to be incident on the element region by passing through the opening.
    Type: Application
    Filed: August 25, 2022
    Publication date: September 21, 2023
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryomo KANEKO, Mariko SHIMIZU, Keita SASAKI, Honam KWON, Ikuo FUJIWARA, Kazuhiro SUZUKI
  • Publication number: 20230257214
    Abstract: A screw supply jig includes first and second members, the second being disposed lower than the first. Either member can be slidably moved relative to the other. In the first member, a first passage hole is formed in the vertical direction. In the second member, at least a part of a second passage hole is formed in the vertical direction. The second passage hole has a first and second recessed part which is penetration shape and having a larger than the first recessed part in planar view. The recessed parts are disposed side by side in the direction of relative sliding of the members, and are connected to each other. In conjunction with the relative sliding, a situation in which the first recessed part of the second passage hole faces the first passage hole, and a situation in which the second recessed part faces the first passage hole are switched.
    Type: Application
    Filed: June 4, 2021
    Publication date: August 17, 2023
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kazunori HIRATA, Keita SASAKI
  • Patent number: 11729496
    Abstract: Provided is an imaging device that includes an imaging unit that performs an imaging operation, a data generator that generates first power supply voltage data corresponding to a first power supply voltage and a flag generation section that generates a flag signal for the first power supply voltage by comparing the first power supply voltage data and first reference data. The first power supply voltage is supplied to the imaging unit.
    Type: Grant
    Filed: May 3, 2022
    Date of Patent: August 15, 2023
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Naoki Kawazu, Keita Sasaki, Takumi Oka, Yuichi Motohashi, Atsushi Suzuki
  • Publication number: 20230249348
    Abstract: A controller of a robot turns over a workpiece into a second state by causing a first end effector to execute a holding operation of holding a first portion in a first state, causing the first robot arm to execute, after the holding operation, a lifting operation of lifting the first end effector such that a second sheet surface separates from a turnover station, causing the first robot arm to execute, after the lifting operation, a lowering operation of lowering the first end effector with a first sheet surface facing downward, and causing the first end effector to execute, before completion of the lowering operation and after the holding operation, a rotary operation of rotating about a first rotation axis in a direction of raising a first end portion.
    Type: Application
    Filed: June 29, 2021
    Publication date: August 10, 2023
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kazunori HIRATA, Keita SASAKI
  • Patent number: 11686630
    Abstract: To obtain an imaging device that can improve temperature detection accuracy. An imaging device of the present disclosure includes a processing unit formed on a first semiconductor substrate and capable of performing predetermined image processing on the basis of image data obtained by an imaging unit, a temperature sensor formed on the first semiconductor substrate and capable of generating a detection signal according to a temperature, and a first pad electrode formed on the first semiconductor substrate and electrically insulated from a circuit formed on the first semiconductor substrate.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: June 27, 2023
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Keita Sasaki, Takumi Oka, Mohammad Munirul Haque, Nobuhiko Fujimori, Makoto Satou, Masahiro Baba, Satoshi Yamamoto, Yuichi Motohashi, Atsushi Suzuki
  • Patent number: 11649892
    Abstract: A hydraulic pressure calculation apparatus is applied to a gear shifting system including a transmission configured to switch between a connected state and a disconnected state of a friction engagement element depending on a hydraulic pressure supplied from a hydraulic circuit, and a hydraulic controller configured to control the hydraulic circuit. The hydraulic pressure calculation apparatus includes a memory and a processor. The memory stores pieces of mapping data of a plurality of phases obtained by dividing a period from a start to an end of switching between the connected state and the disconnected state of the friction engagement element. Each piece of the mapping data defines a mapping. The processor is configured to output, as an output variable, an estimated hydraulic pressure variable indicating an estimated value of an actual hydraulic pressure supplied from the hydraulic circuit to the friction engagement element.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: May 16, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kota Fujii, Atsushi Tabata, Koichi Okuda, Ken Imamura, Hideaki Bunazawa, Keita Sasaki
  • Publication number: 20230082419
    Abstract: The degree of freedom of an abnormality detection target location in a solid-state imaging device in which a plurality of substrates are joined is improved. A semiconductor device includes a connection line and a detection circuit. A plurality of semiconductor substrates are joined in the semiconductor device. Then, in the semiconductor device, the connection line is wired across the plurality of semiconductor substrates. The detection circuit detects the presence or absence of an abnormality in a joint surface of the plurality of semiconductor substrates based on an energization state of the connection line when enable has been set by a predetermined control signal.
    Type: Application
    Filed: January 5, 2021
    Publication date: March 16, 2023
    Inventors: KEITA TAKEUCHI, SATOSHI YAMAMOTO, KYOICHI TAKENAKA, KEITA SASAKI
  • Patent number: 11519495
    Abstract: A heat load estimation device for a friction engaging element that estimates a heat load when at least one of a temperature, a heat generation amount, and presence or absence of seizure in the friction engaging element at a time of shifting of the transmission is regarded as the heat load, includes a storage device and an execution device. The storage device stores mapping data defining mapping. The mapping includes, as an input variable, a speed variable that is a variable indicating a relative rotation speed of members of the friction engaging element and a hydraulic pressure variable that is a variable indicating hydraulic pressure during the shifting of the transmission, and includes, as an output variable, the heat load. The execution device executes a calculation process for calculating a value of the output variable and a change process for changing an execution mode of the calculation process.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: December 6, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kota Fujii, Atsushi Tabata, Koichi Okuda, Ken Imamura, Hideaki Bunazawa, Keita Sasaki
  • Publication number: 20220352219
    Abstract: According to one embodiment, a light detector includes a plurality of elements, a plurality of separation parts, a fourth semiconductor region, a fifth semiconductor region, a first interconnect, a first quenching part, and a second interconnect. The elements are located in a cell region and arranged. Each of the elements includes first, second, and third semiconductor regions. The second semiconductor region is located on the first semiconductor region. The third semiconductor region is located on the second semiconductor region. The separation parts are located respectively around the elements. The fourth semiconductor region is located around each of the separation parts. The fifth semiconductor region is located on the fourth semiconductor region. The first interconnect is electrically connected to the third semiconductor regions. The first quenching part is electrically connected to the first interconnect. The second interconnect is electrically connected to the fifth semiconductor region.
    Type: Application
    Filed: February 24, 2022
    Publication date: November 3, 2022
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mariko SHIMIZU, Ikuo FUJIWARA, Keita SASAKI, Kazuaki OKAMOTO, Honam KWON, Kazuhiro SUZUKI
  • Publication number: 20220347838
    Abstract: A substrate assembling device (1) includes a first end effector 10 attached to a first arm (3), a second end effector 20 attached to a second arm (3), and a controller 4. The second end effector 20 includes a pair of grippers 22 configured to grip a second substrate 102, and a placing part 23 where threaded elements are placed. The controller 4 is adapted to control operations of the first arm and the second arm to position the second substrate 102 on a first substrate 101 while gripping the second substrate 102 by using the pair of grippers 22 of the second end effector 20, and hold the threaded element placed on the placing part 23 of the second end effector 20 and fasten the held threaded element, by using the first end effector 10, to join the first substrate 101 and the second substrate 102 together.
    Type: Application
    Filed: June 1, 2020
    Publication date: November 3, 2022
    Applicant: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Takeshi HASHIMOTO, Keita SASAKI
  • Patent number: 11454581
    Abstract: The molecule detecting apparatus of an embodiment includes a light source 31, a fluorescent layer 42 emitting different fluorescence depending on the kind of a target molecule 60 captured when being irradiated with light from the light source 31, a photodetector 32 configured to detect fluorescence, and the photodetector 32 is an array of avalanche photodiodes operating in Geiger mode.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: September 27, 2022
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Honam Kwon, Ikuo Fujiwara, Kazuhiro Suzuki, Keita Sasaki, Yuki Nobusa, Yasushi Shinjo
  • Publication number: 20220279121
    Abstract: Provided is an imaging device that includes an imaging unit that performs an imaging operation, a data generator that generates first power supply voltage data corresponding to a first power supply voltage and a flag generation section that generates a flag signal for the first power supply voltage by comparing the first power supply voltage data and first reference data. The first power supply voltage is supplied to the imaging unit.
    Type: Application
    Filed: May 3, 2022
    Publication date: September 1, 2022
    Inventors: NAOKI KAWAZU, KEITA SASAKI, TAKUMI OKA, YUICHI MOTOHASHI, ATSUSHI SUZUKI
  • Patent number: 11421781
    Abstract: An oil pressure learning method of an automatic transmission includes acquiring a state of a vehicle in a state where relational regulation data is stored, supplying oil to the automatic transmission such that the value of the oil pressure is set to an oil pressure command value, calculating, as a specific variable, a variable representing an amount in which a detected input rotation speed exceeds a target input rotation speed, or the like, calculating a reward in a manner in which it has a larger value when the specific variable satisfies a criterion than when it does not satisfy the criterion, updating the relational regulation data by inputting, to an update mapping, the reward and the oil pressure command value, and calculating a torque variable having a value that is increased as an amount of change in an input torque is increased.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: August 23, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Bunazawa, Atsushi Tabata, Koichi Okuda, Ken Imamura, Kota Fujii, Keita Sasaki