Patents by Inventor Wataru Tanaka

Wataru Tanaka 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: 20100191420
    Abstract: A damping force control apparatus for a vehicle computes an actual roll angle ? and an actual pitch angle ? in step S11, and computes a difference ?? between a target pitch angle ?a and the actual pitch angle ? in step S12. In step 13, the apparatus computes a total demanded damping force F which must be cooperatively generated by shock absorbers so as to decrease the computed ?? to zero. In step S14, the apparatus distributes the total demanded damping force F in proportion to the magnitude of a lateral acceleration G such that a demanded damping force Fi on the turn-locus inner side becomes greater than a demanded damping force Fo on the turn-locus outer side. In step S15, the apparatus controls the damping force of each of the shock absorbers to the damping force Fi or the damping force Fo. Thus, throughout a turn, a posture changing behavior in which the turn-locus inner side serves as a fulcrum can be maintained.
    Type: Application
    Filed: September 19, 2008
    Publication date: July 29, 2010
    Inventors: Motohiko Honma, Yuichi Mizuta, Taisuke Hayashi, Wataru Tanaka
  • Publication number: 20100172074
    Abstract: A lock unit used for an electronic apparatus that includes a foldable and unfoldable housing that has a first surface that is foldable, and a second surface orthogonal to the first surface includes a lock member that locks the housing in a folded state, an operation member that moves the lock member and releases a lock of the housing by the lock member, and a transmission mechanism that transmits a driving force applied to the operation member to the lock member by changing an operating direction of the operation member to another direction, and moves the lock member in the other direction, wherein the operation member is provided on the second surface, and an operating direction of the operation member is a first direction perpendicular to the second surface, the lock member projecting in a second direction orthogonal to the first surface, and a moving direction of the lock member being a third direction orthogonal to the first and second directions.
    Type: Application
    Filed: December 29, 2009
    Publication date: July 8, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Minoru Kumagai, Ikki Tatsukami, Kazuo Kobayashi, Wataru Tanaka, Kaigo Tanaka
  • Publication number: 20100161180
    Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.
    Type: Application
    Filed: March 5, 2010
    Publication date: June 24, 2010
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, JTEKT CORPORATION, ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
  • Patent number: 7699137
    Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: April 20, 2010
    Assignees: Aisin Seiki Kabushiki Kaisha, Jtekt Corporation, Advics Co., Ltd.
    Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
  • Patent number: 7665774
    Abstract: A lock unit used for an electronic apparatus that includes a foldable and unfoldable housing that has a first surface that is foldable, and a second surface orthogonal to the first surface includes a lock member that locks the housing in a folded state, an operation member that moves the lock member and releases a lock of the housing by the lock member, and a transmission mechanism that transmits a driving force applied to the operation member to the lock member by changing an operating direction of the operation member to another direction, and moves the lock member in the other direction, wherein the operation member is provided on the second surface, and an operating direction of the operation member is a first direction perpendicular to the second surface, the lock member projecting in a second direction orthogonal to the first surface, and a moving direction of the lock member being a third direction orthogonal to the first and second directions.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: February 23, 2010
    Assignee: Fujitsu Limited
    Inventors: Minoru Kumagai, Ikki Tatsukami, Kazuo Kobayashi, Wataru Tanaka, Kaigo Tanaka
  • Patent number: 7660118
    Abstract: An apparatus includes a heat generating component; a heat radiating member that absorbs heat from the heat generating component and radiates heat; a fan that sends air toward the heat radiating member; a housing incorporating the heat generating component, the heat radiating member and the fan, and including a first opening that discharges air warmed up by the heat radiating member to an outside and a second opening that exposes an air inlet portion of the heat radiating member in which air from the fan enters; and a cover member that is detachably attached to the housing and covers the second opening.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: February 9, 2010
    Assignee: Fujitsu Limited
    Inventors: Ikki Tatsukami, Sonomasa Kobayashi, Wataru Tanaka, Daisuke Mihara, Yutaka Sato, Hideaki Kamikakoi
  • Publication number: 20090168404
    Abstract: Light which tries to enter a diffuser plate 3 at an angle which exceeds an angle at which a percentage of reflected light increases rapidly (that is, the incidence angle ?=70 degrees) is all reflected by a reflecting surface 21 and then enters the diffuser plate 3. Therefore, a pseudo light source is formed by light which was collected near a connection point between adjacent reflecting surfaces 21 out of the emitted light of the discharge lamps 1. So, the brightness between the adjacent discharge lamps 1 is increased, and it is possible to reduce unevenness in brightness. Furthermore, since the discharge lamp 1 is housed inside the reflecting surface 21 whose cross-sectional shape is a parabola, it is possible to reduce the distance between a reflecting plate 2 and the diffuser plate 3, as compared with the prior art, and to reduce the thickness dimension in the anteroposterior direction.
    Type: Application
    Filed: July 5, 2006
    Publication date: July 2, 2009
    Inventors: Kazuyuki Matsukawa, Masao Kamada, Wataru Tanaka, Kazuki Watanabe, Isao Nara, Yasuo Uemoto
  • Publication number: 20090040712
    Abstract: In a medium drive unit, a flexible portion of a frame body deflects toward a tray when pressed. Then, the tip of the protrusion disposed on the back surface of the frame body, which surface is directed toward the tray, pushes a button disposed on the front surface of the tray, thereby causing the tray to slide out from a housing body.
    Type: Application
    Filed: July 17, 2008
    Publication date: February 12, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Masahiko Hoshi, Sonomasa Kobayashi, Wataru Tanaka
  • Publication number: 20080266690
    Abstract: An optical filter and a lighting device using the same wherein the suppression of the melatonin secretion by the reception of light in the nighttime is prevented and the color of light is maintained desirable are provided. The optical filter has a mean transmissivity of a light beam in a wavelength range of about 480˜550 nm is about 30% or less. The optical filter is formed by at least molding a transparent resin and a resin composition material containing an orange color series fluorescent dye material, and, for 100 weight part of the transparent resin, the resin composition material containing about 0.005˜0.2 weight part of the orange color series fluorescent dye material is molded. This can prevent the suppression of the melatonin secretion in the nighttime. The color of light is maintained desirable. The optical filter may be applied to a lighting apparatus.
    Type: Application
    Filed: September 13, 2005
    Publication date: October 30, 2008
    Applicant: Matsushita Electric Works, Ltd.
    Inventors: Naohiro Toda, Wataru Tanaka, Hiroki Noguti
  • Publication number: 20080262690
    Abstract: An integrated vehicle body attitude control apparatus includes a detecting portion detecting a vehicle state including a vehicle speed and a steering state, an integrated vehicle body control model calculation portion setting a model rotation axis of a vehicle body and calculating an integrated vehicle body control model including a model value, a distribution controller combining pitch components, heave components and roll components calculated by a first calculator and a second calculator, distributing a combined resultant of the pitch components and the heave components for controlling damping force by the shock absorber controller and distributing a combined resultant of the roll components for controlling the torsional force by the stabilizer controller, and an actuation controller controlling actuation of a shock absorber and a stabilizer in response to a distribution result by the distribution controller.
    Type: Application
    Filed: April 22, 2008
    Publication date: October 23, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Seiji Hidaka, Wataru Tanaka
  • Patent number: 7374014
    Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: May 20, 2008
    Assignees: Aisin Seiki Kabushiki Kaisha, Jtekt Corporation, Advics Co., Ltd.
    Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
  • Publication number: 20080078217
    Abstract: A lock unit used for an electronic apparatus that includes a foldable and unfoldable housing that has a first surface that is foldable, and a second surface orthogonal to the first surface includes a lock member that locks the housing in a folded state, an operation member that moves the lock member and releases a lock of the housing by the lock member, and a transmission mechanism that transmits a driving force applied to the operation member to the lock member by changing an operating direction of the operation member to another direction, and moves the lock member in the other direction, wherein the operation member is provided on the second surface, and an operating direction of the operation member is a first direction perpendicular to the second surface, the lock member projecting in a second direction orthogonal to the first surface, and a moving direction of the lock member being a third direction orthogonal to the first and second directions.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 3, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Minoru Kumagai, Ikki Tatsukami, Kazuo Kobayashi, Wataru Tanaka, Kaigo Tanaka
  • Publication number: 20080043434
    Abstract: An apparatus includes a heat generating component; a heat radiating member that absorbs heat from the heat generating component and radiates heat; a fan that sends air toward the heat radiating member; a housing incorporating the heat generating component, the heat radiating member and the fan, and including a first opening that discharges air warmed up by the heat radiating member to an outside and a second opening that exposes an air inlet portion of the heat radiating member in which air from the fan enters; and a cover member that is detachably attached to the housing and covers the second opening.
    Type: Application
    Filed: April 24, 2007
    Publication date: February 21, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Ikki Tatsukami, Sonomasa Kobayashi, Wataru Tanaka, Daisuke Mihara, Yutaka Sato, Hideaki Kamikakoi
  • Patent number: 7334151
    Abstract: The detector includes the plug for connecting the personal computer through a cable, battery power supply which provides a constant power supply, and the MCU which receives a specific potential from the personal computer when the later is connected.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: February 19, 2008
    Assignees: Renesas Technology Corp., Mitsubishi Electric System LSI Design Corporation
    Inventors: Kenji Kubo, Wataru Tanaka, Hiroyuki Maemura
  • Publication number: 20070294011
    Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.
    Type: Application
    Filed: August 16, 2007
    Publication date: December 20, 2007
    Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
  • Publication number: 20070260902
    Abstract: The detector includes a plug for connecting a personal computer through a cable, a battery power supply which provides a constant power supply, and an MCU which receives a specific potential from the personal computer when the latter is connected.
    Type: Application
    Filed: July 13, 2007
    Publication date: November 8, 2007
    Inventors: Kenji Kubo, Wataru Tanaka, Hiroyuki Maemura
  • Patent number: 7260458
    Abstract: In a steering apparatus, in accordance with a grip limit control process (30b?), it is determined whether or not a grip degree ? estimated by a grip degree estimation arithmetically operating process (30a) is less than a predetermined grip degree (??), and in the case that it is determined that an estimated grip degree (?) is less than the predetermined grip degree (??), the process applies such a feeling that a steering operation by a steering wheel suddenly becomes light to a driver, by suddenly increasing an assist quantity by a motor (M), thereby notifying the driver of the matter that the grip degree of a steered wheel is close to a limit. Therefore, it is possible to transmit to the driver a probability that a side slip is generated by further turning the steering wheel 21 in the same direction as the current direction, thereby calling the driver's attention for steering.
    Type: Grant
    Filed: May 26, 2003
    Date of Patent: August 21, 2007
    Assignees: Jtekt Corporation, Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroaki Kato, Minekazu Momiyama, Shoji Ogawa, Kenji Asano, Yuzou Imoto, Yoshiyuki Yasui, Wataru Tanaka, Eiichi Ono, Yuji Muragishi
  • Patent number: 7215539
    Abstract: A display device comprising: a housing; a plate-shaped display unit having respective side walls; and a fixing means for fixing the display unit to the housing; the fixing means including a Z-direction holding means for holding the display unit in the thickness direction and also including an X-direction holding means and a Y-direction holding means for holding the display unit in the X-direction and the Y-direction perpendicular to the X-direction; at least one of the X-direction holding means and the Y-direction holding means being composed of wall sections, which are opposed to each other, of the housing adjacent to respective side walls of the display unit; a protruding section being formed which protrudes from the side wall of the display unit to the wall section; the wall section having a cutout engaging with the protruding section at a position of the wall section corresponding to the protruding section; and the other of the X-direction holding means and the Y-direction holding means being composed by
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: May 8, 2007
    Assignee: Fujitsu Limited
    Inventors: Wataru Tanaka, Nagahisa Chikazawa, Takashi Iijima, Yutaka Sato
  • Publication number: 20070014083
    Abstract: The present invention relates to a mounting mechanism of an electronic apparatus in which part of the functional portions (a first unit) is removably constructed, the mounting mechanism serving to mount the first unit. In order to ensure positive mounting and demounting by a simple mechanism even when a wide space cannot be obtained, the mounting mechanism is provided with an elastic locking section which is pushed by the first unit which has moved in a mounting direction and elastically deformed, and enters a recess formed in the first unit upon completion of the mounting thereby to lock the first unit, and which receives a movement operation in an operating direction intersecting the mounting direction when the first unit is caused to leave the unit mounting section.
    Type: Application
    Filed: January 25, 2006
    Publication date: January 18, 2007
    Applicant: Fujitsu Limited
    Inventors: Wataru Tanaka, Takashi Iijima
  • Patent number: 7161800
    Abstract: A mounting mechanism of the present invention is provided with an elastic locking section which is pushed by the first unit which has moved in a mounting direction and elastically deformed, and enters a recess formed in the first unit upon completion of the mounting thereby to lock the first unit, and which receives a movement operation in an operating direction intersecting the mounting direction when the first unit is caused to leave the unit mounting section. The mounting mechanism is also provided with a run-on section onto which the elastic locking section runs when the elastic locking section has received a movement operation in the operating direction thereby to elastically deform the elastic locking member and release the recess of the first unit from the engagement of the elastic locking section.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: January 9, 2007
    Assignee: Fujitsu Limited
    Inventors: Wataru Tanaka, Takashi Iijima