Patents by Inventor Takashi Kageyama

Takashi Kageyama 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: 20190135335
    Abstract: A current command value calculation circuit includes an end abutment determination circuit and a guard processing circuit. When a decrease amount of an induced voltage value within a predetermined time is equal to or larger than a predetermined decrease amount in the state that a steering torque is equal to or larger than a predetermined torque, the end abutment determination circuit determines that the end abutment occurs. When a determination signal indicating that the end abutment state does not occur is input, the guard processing circuit outputs an elemental current command value directly as a q-axis current command value. When a determination signal indicating that the end abutment state occurs is input, the guard processing circuit outputs, as the q-axis current command value, a value obtained by limiting the elemental current command value so that its absolute value is equal to or lower than a predetermined limit current value.
    Type: Application
    Filed: November 2, 2018
    Publication date: May 9, 2019
    Applicant: JTEKT Corporation
    Inventors: Hidenori Itamoto, Takashi Kageyama, Toshie Hibi
  • Publication number: 20190135333
    Abstract: Provided is a steering control apparatus in which the response of steering assistance to driver's steering can be improved during execution of rotation angle sensor-less control. When the rotation angle sensor-less control is executed and when an induced voltage value is equal to or lower than a threshold voltage, driving of a motor is controlled based on a second addition angle. The second addition angle is calculated such that values obtained by multiplying a first pre-addition angle calculated based on a steering torque and a second pre-addition angle calculated based on an induced voltage derivative by respective predetermined use ratios that are based on the induced voltage value are added together. By using the second addition angle, a more appropriate estimated electrical angle is calculated in response to a driver's steering situation.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 9, 2019
    Applicant: JTEKT CORPORATION
    Inventors: Hidenori ITAMOTO, Takashi KAGEYAMA, Toshie HIBI
  • Patent number: 10241494
    Abstract: A cutting method in which a workpiece is cut on the basis of a plurality of tool paths parallel to one another into a shape having a corner that protrudes outward. A machining step for machining the workpiece on the basis of one tool path and a moving step for moving to the starting point of the next machining step after the completion of the one machining step are repeated. In the machining step, a cutting step for cutting the workpiece in the one tool path and a removing step for removing a burr by moving a tool relatively to the workpiece in the same tool path as that of the cutting step in a region forming the corner are successively performed.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: March 26, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Yasunori Masumiya, Kyohei Suzuki, Kazutoshi Yabe, Takashi Kageyama
  • Publication number: 20180274085
    Abstract: According to an embodiment of the present invention, the workpiece holding body 20 for surface processing includes the holder 21 and the adhesive sheet 22. The adhesive sheet 22 includes the first surface 22a (the first adhesive layer 221) and the second surface 22b (the second adhesive layer 222), the first surface 22a (the first adhesive layer 221) being bonded to the holder 21 at a first adhesive force, the second surface 22b (the second adhesive layer 222) being capable of holding a workpiece (the component main-body 110) at a second adhesive force, the second adhesive force being higher than the first adhesive force.
    Type: Application
    Filed: August 17, 2016
    Publication date: September 27, 2018
    Inventors: YUU NAKAMUTA, MASAHIRO MATSUMOTO, MANABU HARADA, KOJI TAKAHASHI, TAKASHI KAGEYAMA
  • Publication number: 20180254192
    Abstract: According to a mode of the present invention, a method of manufacturing an electronic component includes: preparing a component main-body 110 including a first surface having an electrode-formed region having a plurality of bump electrodes 103, a second surface opposite to the first surface, and side peripheral surfaces connecting the first surface and the second surface; forming a mask section M1 on at least a peripheral portion of the first surface, the mask section surrounding the electrode-formed region, a height of the mask section being equal to or more than a height of the plurality of bump electrodes; bonding the mask section of the first surface to an adhesive layer 30 on a holder for holding a component; forming a protective film 105 on the component main-body, the protective film covering the second surface and the side peripheral surfaces; and removing the mask section M1 from the first surface.
    Type: Application
    Filed: August 17, 2016
    Publication date: September 6, 2018
    Applicant: ULVAC, INC.
    Inventors: TAKASHI KAGEYAMA, TETSUYA SHIMADA, KOJI TAKAHASHI, YUU NAKAMUTA, MANABU HARADA
  • Publication number: 20180237034
    Abstract: To provide a conveyance system and a rack made up of simple mechanical structures only and free of malfunctions, the rack being capable of reliably meshing with and separating from a plurality of pinions one after another without stoppage or breakage with less impact, vibration, noise and the like even when there are differences in phases and speeds. A rack (120) includes a main body (121) provided with a plurality of fixed rack teeth (122) in a central part thereof, and a movable part (123) provided with movable rack teeth (124) continuous with at least one end of the fixed rack teeth (122). The movable part (123) is pivotally supported around a support shaft (125). The support shaft (125) is provided more forward in a moving direction than a position where the movable rack teeth (124) of the movable part (123) are located.
    Type: Application
    Filed: April 19, 2018
    Publication date: August 23, 2018
    Applicants: TSUBAKIMOTO CHAIN CO., TOAN CO., LTD.
    Inventors: Takashi Kageyama, Shinji Ishikawa
  • Patent number: 9924094
    Abstract: An image pickup apparatus capable of changing a live view photographing drive mode without causing freezing of live view display is demonstrated. When a switch is operated in a state where image signals output from an image pickup device sent via a first path are used for live view and image signals output from the image pickup device sent via a second path are used for AF, a drive mode of the image pickup device is changed such that image signals from the second path can be used for live view, then an acquisition destination of the live view signals is changed from the first path to the second path, then the drive mode is changed such that high-definition live view image signals are output from the first path, and then the acquisition destination of the live view signals is changed from the second path to the first path.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: March 20, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takashi Kageyama
  • Patent number: 9888189
    Abstract: An image capturing apparatus includes a light emission controller configured to make a light emitter provide a first light emission and a second light emission with a light emission amount calculated based on a result of photometry in the first light emission, the light emitter being configured to emit illumination light of the object field, and a switch configured to switch a readout of an exposure control signal between first and second signal readouts to obtain a result of the photometry in the first light emission. In the first signal readout signals from a plurality of photoelectric conversion elements are synthesized and read out. In the second signal readout, an output of a first photoelectric conversion element is read out among a plurality of photoelectric conversion elements in an image sensor and then an output of a second photoelectric conversion element is read out.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: February 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takashi Kageyama
  • Publication number: 20170332013
    Abstract: An image capturing apparatus comprises an image sensor, an image processor and a controller. The image sensor includes pixels each having a photoelectric conversion element and a signal storing unit. The controller transfers image signals to the image processor in a predetermined period if the image signals is a first image signal, and stores, if the image signals is a second image signal, the image signals output from the pixels in the signal storing unit, and transfers some of the image signals stored in the signal storing unit to the image processor during an interval in which the first image signals are transferred to the image processor. The image processor switches image processing in accordance with the type of the image signals transferred from the image sensor.
    Type: Application
    Filed: May 8, 2017
    Publication date: November 16, 2017
    Inventor: Takashi Kageyama
  • Patent number: 9692981
    Abstract: An image pickup apparatus capable of obtaining focusing information at the time of photometry for emission control and of controlling an emission quantity appropriately. An image pickup device receives a pair of light beams that pass through different pupil division areas of an imaging optical system with a pair of photoelectric conversion sections. An extraction unit extracts candidates from a pre-emission image. A calculation unit finds focused areas and defocus areas in the pre-emission image. A selection unit selects a light-control target area from the candidates according to information about the focused areas. A control unit controls emission quantity so that luminance in the light-control target area becomes predetermined luminance.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: June 27, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takashi Kageyama
  • Publication number: 20170010599
    Abstract: A cutting method in which a workpiece is cut on the basis of a plurality of tool paths parallel to one another into a shape having a corner that protrudes outward. A machining step for machining the workpiece on the basis of one tool path and a moving step for moving to the starting point of the next machining step after the completion of the one machining step are repeated. In the machining step, a cutting step for cutting the workpiece in the one tool path and a removing step for removing a burr by moving a tool relatively to the workpiece in the same tool path as that of the cutting step in a region forming the corner are successively performed.
    Type: Application
    Filed: January 28, 2014
    Publication date: January 12, 2017
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Yasunori MASUMIYA, Kyohei SUZUKI, Kazutoshi YABE, Takashi KAGEYAMA
  • Publication number: 20160295136
    Abstract: An image capturing apparatus includes a light emission controller configured to make a light emitter provide a first light emission and a second light emission with a light emission amount calculated based on a result of photometry in the first light emission, the light emitter being configured to emit illumination light of the object field, and a switch configured to switch a readout of an exposure control signal between first and second signal readouts to obtain a result of the photometry in the first light emission. In the first signal readout signals from a plurality of photoelectric conversion elements are synthesized and read out. In the second signal readout, an output of a first photoelectric conversion element is read out among a plurality of photoelectric conversion elements in an image sensor and then an output of a second photoelectric conversion element is read out.
    Type: Application
    Filed: April 5, 2016
    Publication date: October 6, 2016
    Inventor: Takashi Kageyama
  • Patent number: 9358951
    Abstract: A counterweight that biases a ratchet lever toward an unlocking side, in addition to a self weight of the ratchet lever, is provided in a mechanism that locks pull-out operation of a seatbelt according to operation of an acceleration sensor. The counterweight is provided with a moment transmission projection that allows the ratchet lever to turn freely as a result of non-engagement between the counterweight and the ratchet lever when a tilt angle of a seat back is less than 60°, and that transmits rotational moment by a self weight of the counterweight (rotational moment in the direction of an arrow R3) to the ratchet lever as a rotary bias force toward the unlocking side as a result of engagement between the counterweight and an engagement wall of the ratchet lever when the tilt angle of the seat back is 60° or more.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: June 7, 2016
    Assignee: AUTOLIV DEVELOPMENT AB
    Inventors: Masuo Matsuki, Katsuhiro Ito, Takashi Kageyama
  • Publication number: 20160094769
    Abstract: An image pickup apparatus capable of obtaining focusing information at the time of photometry for emission control and of controlling an emission quantity appropriately. An image pickup device receives a pair of light beams that pass through different pupil division areas of an imaging optical system with a pair of photoelectric conversion sections. An extraction unit extracts candidates from a pre-emission image. A calculation unit finds focused areas and defocus areas in the pre-emission image. A selection unit selects a light-control target area from the candidates according to information about the focused areas. A control unit controls emission quantity so that luminance in the light-control target area becomes predetermined luminance.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 31, 2016
    Inventor: Takashi Kageyama
  • Publication number: 20150146031
    Abstract: An image pickup apparatus capable of changing a live view photographing drive mode without causing freezing of live view display is demonstrated. When a switch is operated in a state where image signals output from an image pickup device sent via a first path are used for live view and image signals output from the image pickup device sent via a second path are used for AF, a drive mode of the image pickup device is changed such that image signals from the second path can be used for live view, then an acquisition destination of the live view signals is changed from the first path to the second path, then the drive mode is changed such that high-definition live view image signals are output from the first path, and then the acquisition destination of the live view signals is changed from the second path to the first path.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 28, 2015
    Inventor: Takashi Kageyama
  • Patent number: 9024496
    Abstract: At least part of each bridge portion is heated and molten to form a keyhole, and a nonmagnetic element is disposed around the keyhole. Thus, even when the width of the bridge portion in the radial direction is increased, the bridge portion is demagnetized. Therefore, leakage flux in the bridge portion is reduced, and the output power of a motor is increased. Moreover, by increasing the width of the bridge portion in the radial direction, the strength of the bridge portion is increased, and breakage of the bridge portion due to a centrifugal force at high-speed rotation of a rotor is prevented.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: May 5, 2015
    Assignee: JTEKT Corporation
    Inventors: Takaya Nagahama, Masami Naka, Kouji Kitahata, Yoshiyuki Shibata, Shigeki Nagase, Takashi Kageyama
  • Publication number: 20150001329
    Abstract: A counterweight that biases a ratchet lever toward an unlocking side, in addition to a self weight of the ratchet lever, is provided in a mechanism that locks pull-out operation of a seatbelt according to operation of an acceleration sensor. The counterweight is provided with a moment transmission projection that allows the ratchet lever to turn freely as a result of non-engagement between the counterweight and the ratchet lever when a tilt angle of a seat back is less than 60°, and that transmits rotational moment by a self weight of the counterweight (rotational moment in the direction of an arrow R3) to the ratchet lever as a rotary bias force toward the unlocking side as a result of engagement between the counterweight and an engagement wall of the ratchet lever when the tilt angle of the seat back is 60° or more.
    Type: Application
    Filed: January 9, 2013
    Publication date: January 1, 2015
    Inventors: Masuo Matsuki, Katsuhiro Ito, Takashi Kageyama
  • Patent number: 8764902
    Abstract: A film-forming apparatus capable of discharging a feedstock gas and a reactive gas to an inner side of the vacuum chamber by more effectively cooling the gases without mixing them in comparison with the conventional art. A discharge plate having a first face exposed inside the vacuum chamber is provided with a plurality of feedstock gas introduction holes and a plurality of reactive gas introduction holes penetrating the discharge plate. A plurality of grooves having the feedstock gas introduction holes located on the bottom face are formed in the second face opposite to the first face of the discharge plate, a top plate that covers the groove is arranged over the second face, and the feedstock gas through-hole formed in the top plate and the feedstock gas introduction hole are connected to each other with the first auxiliary pipe.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: July 1, 2014
    Assignee: ULVAC, Inc.
    Inventors: Yasumasa Suzuki, Kenji Kimura, Kazuya Tsukagoshi, Takashi Kageyama
  • Patent number: 8351779
    Abstract: An image pickup apparatus which is capable of reducing possibility of missing a good moment to take a photo and reducing electric power wasted for strobe shooting. The image pickup apparatus is capable of shooting using a strobe. A motion detector detects an amount of motion of an object of which an image is to be picked up. A camera controller sets a target charge voltage level of a main capacitor based on the detected amount of motion of the object.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: January 8, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takashi Kageyama
  • Publication number: 20120154631
    Abstract: An image pickup apparatus which is capable of reducing possibility of missing a good moment to take a photo and reducing electric power wasted for strobe shooting. The image pickup apparatus is capable of shooting using a strobe. A motion detector detects an amount of motion of an object of which an image is to be picked up. A camera controller sets a target charge voltage level of a main capacitor based on the detected amount of motion of the object.
    Type: Application
    Filed: February 27, 2012
    Publication date: June 21, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Takashi Kageyama