Patents by Inventor Yoshihiko Hotta

Yoshihiko Hotta 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: 10408151
    Abstract: A control device for a rotating element rotated by a four-stroke engine has a high degree of freedom in the choice of an apparatus to which the control device is applicable. The control device includes a rotation speed acquisition unit configured to obtain a rotation speed of the rotating element rotated by the four-stroke engine, and an undulation detection unit configured to, based on the rotation speed obtained by the rotation speed acquisition unit, detect a periodic undulation contained in a rotation fluctuation of the four-stroke engine, the periodic undulation having an angular period longer than a crank angle corresponding to four strokes.
    Type: Grant
    Filed: December 2, 2017
    Date of Patent: September 10, 2019
    Assignees: DENSO CORPORATION, YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Minoru Hotta, Yoshihiko Nonogaki, Kazuteru Iwamoto, Makoto Wakimura, Naoki Nagata
  • Publication number: 20190136759
    Abstract: An engine unit includes an internal combustion engine and a misfire detection device. The misfire detection device includes a rough road traveling determination unit that: (a) determines a rough road traveling state based on a distribution state of a crankshaft rotation speed fluctuation physical quantity acquired by a crankshaft rotation speed fluctuation physical quantity acquisition unit, or (b) includes a vehicle traveling state detection unit for detecting a physical quantity in relation to a vehicle traveling state except the crankshaft rotation speed fluctuation physical quantity, and determines a rough road traveling state based on a detection result obtained by the vehicle traveling state detection unit; and suspends a determination of a misfire in the internal combustion engine based on a determination result obtained by the rough road traveling determination unit.
    Type: Application
    Filed: November 2, 2018
    Publication date: May 9, 2019
    Applicants: YAMAHA HATSUDOKI KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yoko FUJIME, Minoru HOTTA, Yoshihiko NONOGAKI
  • Publication number: 20190057052
    Abstract: A semiconductor device according to the present invention includes a plurality of masters (100), a memory controller (400a), a bus that connects the plurality of masters (100) and the memory controller (400a), a QoS information register (610) that stores QoS information of the plurality of masters (100), a right grant number controller (602) that calculates the number of grantable access rights based on space information of a buffer (401) of the memory controller (400a), a right grant selection controller (603a) that selects the master (100) which will be granted the access right based on the QoS information of the QoS information register (610) and the number of grantable rights from the right grant number controller (602), and a request issuing controller (201a) that does not pass a request of the master (100) which has not been granted the access right from the right grant selection controller (603a).
    Type: Application
    Filed: October 19, 2018
    Publication date: February 21, 2019
    Inventors: Sho YAMANAKA, Toshiyuki Hiraki, Yoshihiko Hotta, Takahiro Irita
  • Publication number: 20190004983
    Abstract: Access control is achieved in consideration of write training. Masters issue access requests including a read request and a write request. A memory controller accesses memory in response to the access requests issued by the maters. A central bus-control system controls the output of the access requests issued by the masters to the memory controller. A training circuit conducts training on the memory while the access to the memory is stopped. The central bus-control system further controls the execution of the training on the memory. During the training, the central bus-control system suppresses the output of the read request to the memory controller from among the access requests issued by the masters.
    Type: Application
    Filed: June 5, 2018
    Publication date: January 3, 2019
    Inventors: Katsuya Mizumoto, Toshiyuki Hiraki, Nobuhiko Honda, Sho Yamanaka, Takahiro Irita, Yoshihiko Hotta
  • Publication number: 20180339524
    Abstract: An image recording apparatus that irradiates a recording target with laser light and records an image thereon, that includes: a laser irradiation device that has plural laser emitting elements, and irradiates the recording target with laser light emitted from the plural laser emitting elements; an irradiation condition adjusting unit that causes the laser irradiation device to emit laser light such that a part of an image dot recorded on the recording target moving relatively to the laser irradiation device overlaps an image dot adjacent thereto, and makes a laser irradiation condition for when image dots forming a boundary between a colored portion and a non-colored portion are recorded, different from a laser irradiation condition for when the other image dots are recorded; and an output control unit that controls the irradiation with the laser light, based on the laser irradiation condition adjusted by the irradiation condition adjusting unit.
    Type: Application
    Filed: August 1, 2018
    Publication date: November 29, 2018
    Inventors: Ichiro SAWAMURA, Yoshihiko Hotta, Kazuyuki Uetake, Takahiro Furukawa, Tomomi Ishimi, Yasuroh Yokota
  • Publication number: 20180333966
    Abstract: Recording method including emitting laser light from optical fiber array to record image formed of writing units with moving recording target and the optical fiber array relatively using recording device including laser light-emitting elements and emitting unit including the optical fiber array where optical fibers for guiding laser light from the laser light-emitting elements are aligned wherein (A?D/A?C) that is ratio of length of diagonal line A?D to length of diagonal line A?C in the image formed in a manner that at least part of the writing units are overlapped one another in the main-scanning direction is 1.05 or greater.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 22, 2018
    Inventors: Kazuyuki UETAKE, Yoshihiko Hotta, Ichiro Sawamura, Tomomi Ishimi, Yasuroh Yokota
  • Publication number: 20180333964
    Abstract: An image recording apparatus includes a plurality of laser emission parts disposed side by side in a predetermined direction for emitting laser light; an optical system configured to collect a plurality of beams of laser light emitted by the laser emission parts onto the recording target moving relative to the laser emission parts in a direction crossing the predetermined direction; and an output control unit configured to perform control such that energy of laser light emitted from an outermost end laser emission part of the laser emission parts is greater than energy of laser light emitted from a center laser emission part, the outermost end laser emission part emitting laser light to be transmitted through vicinity of an end portion of the optical system, the center laser emission part emitting laser light to be transmitted through a portion other than vicinity of the end portion of the optical system.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 22, 2018
    Inventors: Ichiro SAWAMURA, Yoshihiko HOTTA, Kazuyuki UETAKE, Takahiro FURUKAWA, Tomomi ISHIMI, Yasuroh YOKOTA
  • Publication number: 20180333967
    Abstract: Recording method including emitting laser light from optical fiber array to record image formed of writing units with moving recording target and the optical fiber array relatively using recording device including laser light-emitting elements and emitting unit including the optical fiber array where optical fibers configured to guide laser light emitted from the laser light-emitting elements are aligned, wherein the image includes convex-concave shapes formed by aligning convex portions relative to, as standard, vertical line to the writing units where the vertical line includes the nearest contact points at endmost side of the image in sub-scanning direction where the image is formed by overlapping or adjoining at least part of the writing units in main-scanning direction and satisfies formula below: T?0.4X where T is average height of the convex portions and X is minimum distance between centers of the adjacent writing units in the image.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 22, 2018
    Inventors: Kazuyuki UETAKE, Yoshihiko HOTTA, lchiro SAWAMURA, Tomomi ISHIMI, Yasuroh YOKOTA
  • Publication number: 20180326745
    Abstract: An image recording apparatus includes: a laser emitting device configured to emit laser beams emitted from a plurality of laser light-emitting elements; an optical fiber array including a plurality of optical fibers provided corresponding to the laser light-emitting elements and configured to guide the laser beams emitted from the laser light-emitting elements to a recording object that relatively moves with respect to the laser emitting device, laser emitting portions of the respective optical fibers being arrayed in an array form in a predetermined direction; and an image recording unit configured to control the laser emitting device so as to irradiate the recording object which relatively moves with respect to the laser emitting device in a direction different from the predetermined direction, with laser beams via the optical fiber array, to heat the recording object and record an image.
    Type: Application
    Filed: July 25, 2018
    Publication date: November 15, 2018
    Inventors: Kazuyuki UETAKE, Yoshihiko HOTTA, Ichiro SAWAMURA, Tomomi ISHIMI, Yasuroh YOKOTA
  • Publication number: 20180326744
    Abstract: An image recording device includes a laser irradiation device that emits laser lights output from a plurality of laser light emitting elements to different positions in a predetermined direction; and an image recording unit that controls the laser irradiation device to irradiate a recording object moving relative to the laser irradiation device in a direction different from the predetermined direction with laser so as to heat the object, form image dots, and record an image. The image recording unit controls the laser irradiation device, conducts recording such that at least one of the image dots, recorded alongside at different positions in a direction perpendicular to a relative moving direction of the object, is shifted relative to other ones of the image dots in the relative moving direction, and records a solid image on the object such that the image dot is partially overlapped with all adjacent image dots.
    Type: Application
    Filed: July 25, 2018
    Publication date: November 15, 2018
    Inventors: Ichiro SAWAMURA, Yoshihiko HOTTA, Kazuyuki UETAKE, Tomomi ISHIMI, Yasuroh YOKOTA
  • Patent number: 10108562
    Abstract: A semiconductor device according to the present invention includes a plurality of masters (100), a memory controller (400a), a bus that connects the plurality of masters (100) and the memory controller (400a), a QoS information register (610) that stores QoS information of the plurality of masters (100), a right grant number controller (602) that calculates the number of grantable access rights based on space information of a buffer (401) of the memory controller (400a), a right grant selection controller (603a) that selects the master (100) which will be granted the access right based on the QoS information of the QoS information register (610) and the number of grantable rights from the right grant number controller (602), and a request issuing controller (201a) that does not pass a request of the master (100) which has not been granted the access right from the right grant selection controller (603a).
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: October 23, 2018
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Sho Yamanaka, Toshiyuki Hiraki, Yoshihiko Hotta, Takahiro Irita
  • Patent number: 9987856
    Abstract: An image recording apparatus includes: a laser irradiation device including a plurality of laser output sections arranged side by side in a certain direction and configured to irradiate positions different from one another in the certain direction with laser light output from the plurality of laser output sections, the image recording apparatus being configured to irradiate a recording target moving relatively to the laser irradiation device in a relative movement direction different from the certain direction, with laser light to heat the recording target, and record a visible image on the recording target; and an image correction unit configured to adjust an irradiation condition of the laser light output from the plurality of laser output sections and correct distortion of an image recorded on a recording surface of the recording target based on a shape of the recording surface.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: June 5, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Ichiro Sawamura, Yoshihiko Hotta, Kazuyuki Uetake, Takahiro Furukawa, Tomomi Ishimi, Yasuroh Yokota
  • Patent number: 9899052
    Abstract: A recording method including: emitting laser light from an optical fiber array to record an image formed of writing units with moving a recording target and the optical fiber array relatively using a recording device including a plurality of laser light-emitting elements and an emitting unit including the optical fiber array, in which a plurality of optical fibers configured to guide laser light emitted from the laser light-emitting elements are aligned, wherein a maximum length of the writing unit along a sub-scanning direction is controlled with set values of: a duty ratio and a cycle of a pulse signal input to the emitting unit; recording energy applied to the recording target; and a spot diameter of the laser light, to record with overlapping an edge of the writing unit with an edge of the adjacent writing unit in the sub-scanning direction.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: February 20, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Satoshi Arai, Yoshihiko Hotta, Kazuyuki Uetake, Ichiro Sawamura, Tomomi Ishimi, Yasuroh Yokota
  • Publication number: 20170270063
    Abstract: A semiconductor device according to the present invention includes a plurality of masters (100), a memory controller (400a), a bus that connects the plurality of masters (100) and the memory controller (400a), a QoS information register (610) that stores QoS information of the plurality of masters (100), a right grant number controller (602) that calculates the number of grantable access rights based on space information of a buffer (401) of the memory controller (400a), a right grant selection controller (603a) that selects the master (100) which will be granted the access right based on the QoS information of the QoS information register (610) and the number of grantable rights from the right grant number controller (602), and a request issuing controller (201a) that does not pass a request of the master (100) which has not been granted the access right from the right grant selection controller (603a).
    Type: Application
    Filed: October 1, 2015
    Publication date: September 21, 2017
    Applicant: Renesas Electronics Corporation
    Inventors: Sho YAMANAKA, Toshiyuki HIRAKI, Yoshihiko HOTTA, Takahiro IRITA
  • Publication number: 20170225488
    Abstract: A recording method including: emitting laser light from optical-fiber-array to record image of writing units with moving recording target and the optical fiber array relatively using recording device including laser light-emitting elements, and emitting unit including the optical-fiber-array, where optical fibers to guide laser light emitted from the laser light-emitting elements are aligned, wherein, where the laser light is applied from the optical fibers adjacent to each other in main-scanning direction to the recording target to record solid image of the writing units at least partially overlapped to each other in the main-scanning direction, recording is performed by reducing irradiation energy of the laser light for recording the writing units other than both edges of the solid image relative to the main-scanning direction, compared to irradiation energy of the laser light for recording the writing units present at the both edges of the solid image.
    Type: Application
    Filed: February 3, 2017
    Publication date: August 10, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Satoshi ARAI, Yoshihiko HOTTA, Kazuyuki UETAKE, Ichiro SAWAMURA, Tomomi ISHIMI, Yasuroh YOKOTA
  • Publication number: 20170225487
    Abstract: An image recording apparatus includes: a laser irradiation device including a plurality of laser output sections arranged side by side in a certain direction and configured to irradiate positions different from one another in the certain direction with laser light output from the plurality of laser output sections, the image recording apparatus being configured to irradiate a recording target moving relatively to the laser irradiation device in a relative movement direction different from the certain direction, with laser light to heat the recording target, and record a visible image on the recording target; and an image correction unit configured to adjust an irradiation condition of the laser light output from the plurality of laser output sections and correct distortion of an image recorded on a recording surface of the recording target based on a shape of the recording surface.
    Type: Application
    Filed: February 1, 2017
    Publication date: August 10, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Ichiro SAWAMURA, Yoshihiko HOTTA, Kazuyuki UETAKE, Takahiro FURUKAWA, Tomomi ISHIMI, Yasuroh YOKOTA
  • Publication number: 20170229143
    Abstract: A recording method including: emitting laser light from an optical fiber array to record an image formed of writing units with moving a recording target and the optical fiber array relatively using a recording device including a plurality of laser light-emitting elements and an emitting unit including the optical fiber array, in which a plurality of optical fibers configured to guide laser light emitted from the laser light-emitting elements are aligned, wherein a maximum length of the writing unit along a sub-scanning direction is controlled with set values of: a duty ratio and a cycle of a pulse signal input to the emitting unit; recording energy applied to the recording target; and a spot diameter of the laser light, to record with overlapping an edge of the writing unit with an edge of the adjacent writing unit in the sub-scanning direction.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 10, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Satoshi ARAI, Yoshihiko HOTTA, Kazuyuki UETAKE, Ichiro SAWAMURA, Tomomi ISHIMI, Yasuroh YOKOTA
  • Publication number: 20170225489
    Abstract: Recording method including: emitting laser-light from optical-fiber-array to record image of writing-units with moving recording target and the optical-fiber-array relatively using recording device including laser-light-emitting-elements and emitting unit including the optical-fiber-array, where optical fibers to guide laser-light emitted from the laser-light-emitting-elements are aligned, wherein diagonal line A?C is longer than B in the image formed by overlapping or adjoining at least part of the writing-units in main-scanning direction, where B is length of ½ line width of the writing-unit in main-scanning direction, A is center of edge of the writing-unit in sub-scanning direction, A? is position proceeded from A towards inner-side of the writing-unit by B, line LL? is drawn to include A and be orthogonal to the writing-unit, diagonal-line is drawn with A as starting point and to have angle of 45° with line LL?, and C is intersection between the diagonal-line and the writing-unit.
    Type: Application
    Filed: February 3, 2017
    Publication date: August 10, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kazuyuki UETAKE, Yoshihiko HOTTA, Ichiro SAWAMURA, Tomomi ISHIMI, Yasuroh YOKOTA
  • Patent number: 9370955
    Abstract: The present invention provides an image processing method which includes any one of recording an image on a thermally reversible recording medium that can reversibly change any one of its transparency and color tone depending on temperature by irradiating and heating the thermally reversible recording medium with a laser beam, and erasing the image recorded on the thermally reversible recording medium by heating the thermally reversible recording medium, wherein in any one of the image recording and the image erasing, the thermally reversible recording medium is located at a position farther than a focal position of the laser beam, and at least any one of the image recording and the image erasing is performed.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: June 21, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shinya Kawahara, Yoshihiko Hotta, Tomomi Ishimi
  • Patent number: 9302524
    Abstract: A disclosed marking control device controls a marking device to mark a target image on a thermoreversible recording medium by applying a laser beam includes a marking position determination unit dividing the image into plural marking lines, and determining their marking positions; a marking order determination unit determining a marking order to mark the marking lines in mutually opposite directions; an adjusting unit adjusting a distance between a first ending point and a second starting point to be longer than a distance between a first starting point and a second ending point, or adjusting laser power applied to a second starting point side of the second marking line to be lower than the laser power applied to a second ending point side of the second marking line; and a marking instruction generator unit generating marking instructions including the marking positions of the marking lines and the marking order thereof.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: April 5, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kazutaka Yamamoto, Tomomi Ishimi, Shinya Kawahara, Toshiaki Asai, Yoshihiko Hotta