Patents by Inventor Yuki Nakajima

Yuki Nakajima 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: 20130293907
    Abstract: The image forming apparatus includes an image forming unit for forming an image on a recording material; an original read unit for reading an original at a read position facing a conveyance path in which the recording material and the original are to be conveyed selectively, and a control unit for switching a position of the original read unit to a position different from the read position during a period in which the recording material is being conveyed along the conveyance path.
    Type: Application
    Filed: April 16, 2013
    Publication date: November 7, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masaru Aoki, Yuki Nakajima, Hiroshi Kato
  • Publication number: 20130270249
    Abstract: An apparatus for controlling a vehicle, which includes: a battery (3) capable of being charged from an external power source (EPS); a power generation unit (PGU) capable of charging the battery (3); an electric heater (12) configured to produce heat with electric power from an electric power source; a heater core (11) configured to heat air by using any one of waste heat from the power generation unit (PGU) and the electric heater (12); and a controller (19) configured to perform control for selectively using the waste heat from the power generation unit (PGU) and the electric heater (12) as a heat source of the heater core (11) when the vehicle is parked.
    Type: Application
    Filed: November 22, 2011
    Publication date: October 17, 2013
    Inventors: Keisuke Suzuki, Yuki Nakajima, Naoki Ueda
  • Publication number: 20130258425
    Abstract: An image reading device includes a conveying unit, reading unit, and a control unit. The conveying unit conveys successive two sheets along a conveying path such that a gap is formed between the successive two sheets. The reading unit reads a sheet conveyed at a reading position in the conveying path. The reading unit has a light source and light-receiving unit. The control unit controls the light source to emit light at a first light intensity for a sheet that has reached the reading position. The light-receiving unit receives light reflected by the sheet present at the reading position. The control unit further controls the light source to emit a light at a second light intensity lower than the first light intensity during a period of time from when the reading unit has been read the preceding sheet to when the reading unit begins reading the subsequent sheet.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 3, 2013
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi MAEDA, Yuki NAKAJIMA
  • Publication number: 20130236203
    Abstract: The power supply device includes a transformer, a switching unit for driving a primary side of the transformer, a control unit for outputting a pulse signal to the switching unit to control a switching operation including a period during which the switching unit is active and a period during which the switching unit is inactive, in order to output predetermined electric power from a secondary side of the transformer, and an output control unit for continuously outputting a pulse signal to the control unit in the period during which the switching unit is active, at a predetermined cycle shorter than the period during which the switching unit is inactive.
    Type: Application
    Filed: February 15, 2013
    Publication date: September 12, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuki Nakajima, Minoru Hayasaki
  • Publication number: 20130033374
    Abstract: A vehicle warning sound emitting apparatus includes a warning sound emitting component and a controller. The warning sound emitting component to selectively emits a warning sound that is audible outside of the vehicle. The controller controls the warning sound emitting component to emit the warning sound during a prescribed period that an engine sound is being emitted from an engine of the vehicle such that the engine sound and the warning sound are audible at a location outside the vehicle during the prescribed period when the controller is controlling the warning sound emitting component to switch between emitting the warning sound and refraining from emitting the warning sound based on a vehicle traveling condition.
    Type: Application
    Filed: May 23, 2011
    Publication date: February 7, 2013
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yuki Nakajima, Keisuke Suzuki, Naoki Ueda
  • Patent number: 8310736
    Abstract: An image reading device includes: a light-source adjusting device, a storage, a first converting device and a determining device. The adjusting device adjusts brightness of the light source to the brightness corresponding to the one of a plurality of reading modes. The storage stores an reference adjusting value and converting information, the reference adjusting value being adjusted in a state where external light is not incident on a platen, the converting information being for converting the reference adjusting value of the reference mode into the reference adjusting value of another reading mode. The first converting device refers to the converting information and converts the reference adjusting value into the value of the selected reading mode. The determining device determines presence or absence of external light incident on the platen, comparing the converted reference adjusting value with the light-source adjusting value adjusted by the adjusting device.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: November 13, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Yuki Nakajima
  • Publication number: 20120268801
    Abstract: An image reading apparatus is provided. The image reading apparatus includes a first transparent section to have a first original sheet set thereon, a second transparent section to have a second original sheet conveyed by a sheet conveyer, a reader unit being movable in a sub-scanning direction to read the image on the original sheet being set on the first transparent section and to be maintained still to read the image being conveyed by the sheet conveyer, a white reference member, of which image is read by the reader unit and recognized as a reference white color, and a light reductive member arranged on an inner bottom of a casing to reduce an amount of incident light.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 25, 2012
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuki NAKAJIMA, Yasuhiro HOSOKAWA
  • Patent number: 8198774
    Abstract: A motor includes: a stator (12) having coils; a rotor (11), which is disposed inside the stator and has a plurality of magnets; and a magnetic path switching part (18), which is provided in the rotor (11) and switches a magnetic path of the rotor (11) to select intense field control as a forward salient-pole structure or weak field control as an inverse salient-pole structure. The magnetic path switching part (18) is formed by use of a member having magnetic anisotropy, which is arranged on a magnetic path connecting magnets (13) of the same pole and a magnetic path connecting magnets (13) of different poles in the rotor (11). By changing the magnetic anisotropy of the member, the forward salient-pole structure and the inverse salient-pole structure are switched therebetween.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: June 12, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Takashima, Yuki Nakajima
  • Publication number: 20120050822
    Abstract: An image scanning device is provided with a scanning unit configured to scan an original with a second resolution which corresponding to a first resolution and output image data thereof, a reduction unit configured to convert a resolution of the image data output by the scanning unit to a third resolution which is lower than the first resolution and the second resolution, a storing unit configured to store the image data converted to have the third resolution by the reduction unit, a magnification varying unit configured to convert the resolution of the image data stored in the storing unit to the first resolution, and an output unit configured to output the image data converted to have the first resolution.
    Type: Application
    Filed: August 25, 2011
    Publication date: March 1, 2012
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Toshiki MOTOYAMA, Yuki NAKAJIMA
  • Patent number: 8107269
    Abstract: An apparatus to convert a direct current to an alternating current includes a power module disposed between an input terminal of the direct current and output terminal of the alternating current, the power module comprising an on/off switch element, a first smoothing condenser connected in parallel with the power module, a second smoothing condenser connected in parallel with the power module, the second smoothing condenser comprising an electrostatic capacity less than the first smoothing condenser, a first wiring connecting the power module and the first smoothing condenser, and a second wiring connecting the power module and the second smoothing condenser, the second wiring comprising an inductance greater than the first wiring.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: January 31, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yukio Mizukoshi, Yuki Nakajima, Tomoya Imazu
  • Publication number: 20110311260
    Abstract: A switching power source is provided, which includes, a transformer, a switching unit configured to switch a voltage supplied to a primary side of the transformer, and an output unit configured to output a voltage generated at a secondary side of the transformer, wherein a switching cycle of the switching unit is set to be a predetermined period of time when the output unit outputs a first voltage, a first period of time and a second period of time are set to be longer than the predetermined period of time and are set to be different from each other.
    Type: Application
    Filed: June 20, 2011
    Publication date: December 22, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuki Nakajima, Fumiaki Mizuno
  • Patent number: 8049383
    Abstract: A motor is basically provided with a rotor and a stator. The stator includes a plurality of stacked magnetic entities, a dielectric material disposed between adjacent ones of the magnetic entities, a positive electrode part provided on at least one of the magnetic entities and a negative electrode part provided on at least one of the magnetic entities that does not have the positive electrode part. The positive electrode part is arranged for connecting to a positive side of an external circuit. The negative electrode part arranged for connecting to a negative side of the external circuit.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: November 1, 2011
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yuki Nakajima, Tomoya Imazu, Yukio Mizukoshi, Sho Sato, Yusuke Zushi
  • Patent number: 8008805
    Abstract: A power conversion apparatus includes a plurality of power modules, a plurality of capacitors and a bus bar. Each of the power modules has a direct current terminal section and an alternating current terminal section. Each of the power modules is configured and arranged to convert a direct current inputted from the direct current terminal section into a respective phase of a multiple-phase alternating current and to output the multiple-phase alternating current to the alternating current terminal section. Each of the capacitors is arranged with respect to a corresponding one of the power modules. The bus bar forms an inter-phase current path between the power modules that are adjacent and forms an intra-phase current path between one of the power modules and a corresponding one of the capacitors such that an impedance of the inter-phase current path is smaller than an impedance of the intra-phase current path.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: August 30, 2011
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yukio Mizukoshi, Yuki Nakajima, Tomoya Imazu, Yoshiyuki Nagai
  • Publication number: 20100231991
    Abstract: An image reading device includes: a light-source adjusting device, a storage, a first converting device and a determining device. The adjusting device adjusts brightness of the light source to the brightness corresponding to the one of a plurality of reading modes. The storage stores an reference adjusting value and converting information, the reference adjusting value being adjusted in a state where external light is not incident on a platen, the converting information being for converting the reference adjusting value of the reference mode into the reference adjusting value of another reading mode. The first converting device refers to the converting information and converts the reference adjusting value into the value of the selected reading mode. The determining device determines presence or absence of external light incident on the platen, comparing the converted reference adjusting value with the light-source adjusting value adjusted by the adjusting device.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 16, 2010
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Yuki Nakajima
  • Patent number: 7775060
    Abstract: A drive unit for an electric vehicle is comprised of a motor, an inverter which supplies alternating current electric power to the motor, a speed reducer which is connected to the motor, and a cooling system which cools the motor, the inverter and the speed reducer. The speed reducer reduces a revolution speed of a mechanical output of the motor. The cooling system comprises a heat exchanger at which first refrigerant for receiving heat of at least one of the motor and the inverter receives heat of second refrigerant for receiving heat of at least one of the motor and the speed reducer.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: August 17, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yuki Nakajima, Masahiro Tsukamoto, Masakazu Kobayashi, Yutaro Kaneko, Hiroyuki Kaneko, Toshiro Shinohara, Makoto Iwashima, Yasuhiko Kitajima, Akihiro Hanamura, Kouichirou Yonekura, Tadayuki Hatsuda
  • Patent number: 7733674
    Abstract: A power conversion apparatus for converting direct current from a power source to polyphase alternating current includes a plurality of carrier signal generators, a plurality of gate signal generators, and a plurality of legs. The carrier signal generators are configured and arranged to independently generate and transmit a plurality of carrier signals, respectively. The gate signal generators are operatively coupled to the carrier signal generators, respectively, to receive the carrier signals, each of the gate signal generators being configured and arranged to generate an on/off signal by comparing a command value of each phase of the polyphase alternating current and corresponding one of the carrier signals. The legs are connected to the gate signal generators. Each of the legs is operated based on the on/off signal transmitted from corresponding one of the gate signal generators to convert the direct current to each phase of the polyphase alternating current.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: June 8, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomoya Imazu, Yukio Mizukoshi, Yuki Nakajima
  • Patent number: 7729640
    Abstract: A carriage for an image scanning unit which scans an image on an object is provided with a light source, a reflecting member placed to face the light source and configured to reflect a light emitted from the light source toward the object to illuminate the image, a housing that contains the light source and the reflecting member, the housing having an opening which allows the light reflected by the reflecting member to pass through and proceed toward the object, and a radiation plate connected to the reflecting member so that heat is conducted from the reflecting member to the radiation plate, at least part of the radiation plate being exposed to outside the housing.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: June 1, 2010
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tomoya Ito, Yuki Nakajima, Yoichi Horaguchi, Satoshi Mizutani
  • Patent number: 7710065
    Abstract: A power conversion system includes first and second voltage sources for driving a multiple-phase AC motor and a control unit. The control unit is configured to compute first and second output voltage command values used to drive the multiple-phase AC motor based on a first output voltage command vector corresponding to the voltage source that is charged and a second output voltage command vector corresponding to the voltage source that is discharged. The first and second output voltage command vectors are determined so that a resultant vector of the first and second output voltage command vectors is coincident with a motor voltage command vector corresponding to a motor voltage command value, and a motor current command vector corresponding to the motor current command value is positioned within an included angle formed between the second output voltage command vector and a negative vector of the first output voltage command vector.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: May 4, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Sho Sato, Kantaro Yoshimoto, Kengo Maikawa, Yuki Nakajima
  • Publication number: 20090010029
    Abstract: An apparatus to convert a direct current to an alternating current includes a power module disposed between an input terminal of the direct current and output terminal of the alternating current, the power module comprising an on/off switch element, a first smoothing condenser connected in parallel with the power module, a second smoothing condenser connected in parallel with the power module, the second smoothing condenser comprising an electrostatic capacity less than the first smoothing condenser, a first wiring connecting the power module and the first smoothing condenser, and a second wiring connecting the power module and the second smoothing condenser, the second wiring comprising an inductance greater than the first wiring.
    Type: Application
    Filed: July 1, 2008
    Publication date: January 8, 2009
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yukio Mizukoshi, Yuki Nakajima, Tomoya Imazu
  • Publication number: 20080303362
    Abstract: A motor is basically provided with a rotor and a stator. The stator includes a plurality of stacked magnetic entities, a dielectric material disposed between adjacent ones of the magnetic entities, a positive electrode part provided on at least one of the magnetic entities and a negative electrode part provided on at least one of the magnetic entities that does not have the positive electrode part. The positive electrode part is arranged for connecting to a positive side of an external circuit. The negative electrode part arranged for connecting to a negative side of the external circuit.
    Type: Application
    Filed: June 4, 2008
    Publication date: December 11, 2008
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Yuki NAKAJIMA, Tomoya IMAZU, Yukio MIZUKOSHI, Sho SATO, Yusuke ZUSHI