Patents by Inventor Kenji Arai

Kenji Arai 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: 20160142809
    Abstract: A wiring structure is provided for an electroacoustic transducer directly converting digital signals from a single sound source to sound waves without conversion to analogue signals. The structure includes a diaphragm, and a plurality of voice coils fixed to the diaphragm. The voice coils are connected to respective cables each consisting of a stranded pair of positive and negative input lines.
    Type: Application
    Filed: November 11, 2015
    Publication date: May 19, 2016
    Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventors: Koichiro TANOUE, Kenzo TSUIHIJI, Yoji HONDA, Kenji ARAI
  • Publication number: 20160143051
    Abstract: A REC unit manages card information on each of L1 cards handling a physical channel, L2-1 cards handling a logical channel, and L2-2 cards in which a scheduling function for communication processing performed with respect to the L1 card and/or the L2-1 card is implemented. A call control card of the REC unit selects, for each of first to third channels, a processing card establishing a signal path relevant to the logical channel from among the L1 card, the L2-1 card, and the L2-2 card. The call control card transmits connection relation information indicating a combination of the processing cards selected to each processing card. On the basis of the connection relation information received from the call control card, each processing card establishes the signal path for each of the first to third channels relevant to the logical channel between the processing cards.
    Type: Application
    Filed: October 28, 2015
    Publication date: May 19, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Hiroaki TAKASHIMA, Kenji ARAI, Koichi Hiramoto
  • Publication number: 20160142812
    Abstract: An electroacoustic transducer includes a driver, a diaphragm 13 driven to vibrate by the driver and emitting sound, a baffle 21 holding the diaphragm 13, first apertures 25 extending from the front surface to the rear surface of the baffle 21, and a first acoustic resistor 22 disposed on the front surface of the baffle so as to cover the first apertures. The electroacoustic transducer includes a plurality of sound paths for guiding the sound generated by the diaphragm 13 to the rear surface of the baffle 21.
    Type: Application
    Filed: November 9, 2015
    Publication date: May 19, 2016
    Inventors: Yoji Honda, Kenzo Tsuihiji, Koichiro Tanque, Kenji Arai
  • Publication number: 20160142813
    Abstract: An electroacoustic transducer includes a driver, a diaphragm 13 driven to vibrate by the driver and emitting sound, a baffle 22 holding the driver and the diaphragm 13, first openings 25 extending through the baffle 22, an acoustic resistor 23 disposed on the back side of the baffle 22, and second openings 26 extending from the front side to the back side of the acoustic resistor 23. The baffle 22 is provided on the back side of the diaphragm 13. The first openings 25 are provided in the baffle 22. The second openings 26 are each disposed above one of the first openings 25 in the acoustic resistor 23. The electroacoustic transducer exhibits an excellent frequency response even if a sufficient volume of a space is not provided on the back side of the diaphragm 13.
    Type: Application
    Filed: November 9, 2015
    Publication date: May 19, 2016
    Inventors: Yoji Honda, Kenzo Tsuihiji, Koichiro Tanoue, Kenji Arai
  • Publication number: 20160142811
    Abstract: Provided is a headphone unit including a housing having a convex portion and accommodating a driver unit, a support in contact with part of the outer surface of the convex portion, and a frictional member in contact with the support and the outer surface of the convex portion. The frictional member generates greater friction against the convex portion than the friction between the support and the convex portion. The housing is swingably joined to the support.
    Type: Application
    Filed: November 10, 2015
    Publication date: May 19, 2016
    Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventors: Yoji HONDA, Kenzo TSUIHIJI, Koichiro TANOUE, Kenji ARAI
  • Patent number: 9331539
    Abstract: A motor power distribution apparatus includes first insulating holders and second insulating holders. The first insulating holders are disposed to retain every other one of a plurality of stacked power distribution members that are unified by insert molding. The second insulating holders are disposed to retain power distribution members other than the power distribution members retained by the first insulating holders.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: May 3, 2016
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Kenji Arai
  • Patent number: 9312762
    Abstract: A switching transistor is configured such that its on resistance RON is switchable between at least two values RON1 and RON2. When the switching transistor is switched from off to on, a control circuit sets the on resistance of the switching transistor to the first value RON1 for a first period immediately after the switching of the switching transistor. Subsequently, for a second period until the switching transistor is turned off, the control circuit sets the on resistance of the switching transistor to the second value RON2 that is smaller than the first value RON1.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: April 12, 2016
    Assignee: ROHM CO., LTD.
    Inventors: Kenji Arai, Noriaki Hiraga
  • Patent number: 9300506
    Abstract: A clock synchronization circuit is configured to capture an input data bit according to an input clock signal, and to synchronize and output the input data bit. The clock synchronization circuit includes a clock buffer for generating an internal clock signal according to the input clock signal and transmitting the internal clock signal to a clock line. The clock synchronization circuit further includes a D flip-flop for capturing and outputting the input data bit at an edge timing of the internal clock signal. The clock buffer includes an inverter core portion and an electric current suppressing portion. The inverter core portion is configured to generate the internal clock signal through alternately supplying an electric current to the clock line and drawing the electric current from the clock line according to the input clock signal. The electric current suppressing portion is configured to suppress an amount of the electric current.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: March 29, 2016
    Assignee: LAPIS SEMICONDUCTOR CO., LTD
    Inventor: Kenji Arai
  • Publication number: 20150287949
    Abstract: An organic electroluminescent element includes a layer having a shallower LUMO and a higher T1 than those of the first light-emitting layer on the anode side of the first light-emitting layer, and a layer which satisfies at least one of a deeper LUMO and includes a lower T1 than those of the second light-emitting layer on the anode side of the second light-emitting layer, and provides the organic electroluminescent element capable of suppressing the lowering of display quality.
    Type: Application
    Filed: March 25, 2015
    Publication date: October 8, 2015
    Inventors: Ken OKAMOTO, Rieko Takahashi, Kenji Arai
  • Patent number: 9142068
    Abstract: An airbag ECU includes a voltage detection section that detects a voltage in a power supply supplied to other control units (for example, front passenger seat occupancy sensing ECU). In addition, the airbag ECU includes a timer that measures an elapsed time after the voltage detected by the voltage detection section falls in a preset voltage range and a recording section that records the elapsed time measured by the timer on a memory when a failure of the other control units is detected.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: September 22, 2015
    Assignee: Bosch Corporation
    Inventor: Kenji Arai
  • Publication number: 20150249079
    Abstract: An input signal having a high level or a low level is input to a pad. A first protection element includes a first transistor configured as an N-channel MOSFET designed so as to withstand ESD. A second protection element includes a second transistor configured as a P-channel MOSFET designed so as to withstand ESD. A capacitance element is connected to a second line, and forms an RC filter together with a filter resistor. The capacitance element includes at least one from among a third transistor having the same device structure as that of the first transistor and a fourth transistor having the same device structure as that of the second transistor.
    Type: Application
    Filed: May 8, 2015
    Publication date: September 3, 2015
    Inventor: Kenji ARAI
  • Patent number: 9112658
    Abstract: A base station includes a transmission timing adjustment determination unit that determines whether to adjust a transmission timing of an uplink signal for each of user terminals; a radio resource allocation unit that allocates a radio resource for instruction information to be transmitted to first ones of the user terminals for which it has been determined that the transmission timing of the uplink signal is not to be adjusted; and an instruction information transmission unit that transmits the instruction information to the first ones of the user terminals. The instruction information indicates that the transmission timing is not to be adjusted, and the radio resource allocation unit allocates the instruction information to the radio resource to be shared and used by the first ones of the user terminals.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: August 18, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Kenji Arai, Takashi Fujita
  • Patent number: 9098807
    Abstract: A video hosting service comprising video classifiers that identify content sources of content included in videos uploaded to the video hosting service. Identifying the content source allows a content owner of the content source to claim ownership of videos that include content based on the content source. Usage policies associated with the content owners are applied to the uploaded videos that describe how the video hosting service is to treat the videos.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: August 4, 2015
    Assignee: Google Inc.
    Inventors: Clifford Samaniego, David G. King, David A. Ross, Alexander Joshua Frank, Omid Madani, Kenji Arai, Ruei-Sung Lin
  • Patent number: 9058998
    Abstract: An input signal having a high level or a low level is input to a pad. A first protection element includes a first transistor configured as an N-channel MOSFET designed so as to withstand ESD. A second protection element includes a second transistor configured as a P-channel MOSFET designed so as to withstand ESD. A capacitance element is connected to a second line, and forms an RC filter together with a filter resistor. The capacitance element includes at least one from among a third transistor having the same device structure as that of the first transistor and a fourth transistor having the same device structure as that of the second transistor.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: June 16, 2015
    Assignee: ROHM CO., LTD.
    Inventor: Kenji Arai
  • Publication number: 20150124917
    Abstract: A clock synchronization circuit is configured to capture an input data bit according to an input clock signal, and to synchronize and output the input data bit. The clock synchronization circuit includes a clock buffer for generating an internal clock signal according to the input clock signal and transmitting the internal clock signal to a clock line. The clock synchronization circuit further includes a D flip-flop for capturing and outputting the input data bit at an edge timing of the internal clock signal. The clock buffer includes an inverter core portion and an electric current suppressing portion. The inverter core portion is configured to generate the internal clock signal through alternately supplying an electric current to the clock line and drawing the electric current from the clock line according to the input clock signal. The electric current suppressing portion is configured to suppress an amount of the electric current.
    Type: Application
    Filed: January 8, 2015
    Publication date: May 7, 2015
    Inventor: Kenji ARAI
  • Publication number: 20150118593
    Abstract: A fuel cell stack includes: a cell stack structure formed by stacking a plurality of cells; a pair of current collectors; a pair of end members; and a fastener band wrapped around a cell stack formed by stacking the cell stack structure, the pair of current collectors, and the pair of end members. Each of the pair of end members includes a plurality of plate members. The plate members have a same arched shape in which a height from a surface to contacting a corresponding one of the pair of current collectors gradually increases toward a center portion from both ends, and are disposed in parallel while being apart from each other in a width direction of the fastener band. Adjacent plate members are coupled to each other through a bendable coupling member at part of facing surfaces.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 30, 2015
    Inventors: TAKASHI MORIMOTO, MITSUO YOSHIMURA, KENJI ARAI, KOZUE KUNIYOSHI
  • Publication number: 20150102090
    Abstract: Provided is a flux that includes at least one polybutadiene (meth)acrylate compound selected from polybutadiene (meth)acrylate compounds and polybutadiene (meth)acrylate compounds, and a hydrogenated dimer acid.
    Type: Application
    Filed: March 11, 2013
    Publication date: April 16, 2015
    Inventors: Kenji Arai, Mitsuyasu Furusawa, Junichi Aoki, Mayumi Takada, Munehiko Nakatsuma
  • Patent number: 9005834
    Abstract: A polymer electrolyte fuel cell comprises a plurality of stacked cells each having an ionic conductive electrolyte membrane, an anode placed on one side of the electrolyte membrane, a cathode placed on the other side of the electrolyte membrane, and a conductive separator on which a first refrigerant channel for flow of a refrigerant is formed in center part thereof. The separator comprises penetration holes constituting a manifold which extend in a direction of stacking of the plurality of cells and through which the refrigerant flows and second refrigerant channels for communication between the penetration holes and the first refrigerant channel. A plurality of protrusions that protrude into the penetration holes from parts of wall surfaces of the penetration holes that are located peripherally in connection parts between the penetration holes and the second refrigerant channels.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: April 14, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Mitsuo Yoshimura, Hirokazu Honkawa, Kenji Arai
  • Patent number: 8957719
    Abstract: A clock synchronization circuit is configured to capture an input data bit according to an input clock signal, and to synchronize and output the input data bit. The clock synchronization circuit includes a clock buffer for generating an internal clock signal according to the input clock signal and transmitting the internal clock signal to a clock line. The clock synchronization circuit further includes a D flip-flop for capturing and outputting the input data bit at an edge timing of the internal clock signal. The clock buffer includes an inverter core portion and an electric current suppressing portion. The inverter core portion is configured to generate the internal clock signal through alternately supplying an electric current to the clock line and drawing the electric current from the clock line according to the input clock signal. The electric current suppressing portion is configured to suppress an amount of the electric current.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: February 17, 2015
    Assignee: Lapis Semiconductor Co., Ltd
    Inventor: Kenji Arai
  • Publication number: 20150008775
    Abstract: A concentrated power-distribution member for a concentrated winding motor including a ring-shaped busbar and a coil connection terminal formed in one-piece with the busbar to hold a coil winding end positioned in an inner side of the busbar. The coil connection terminal has an erected portion extending from the busbar in parallel with the center axis of the busbar and a pair of arms extending from the leading end of the erected portion toward a center axis. A pair of arms is constructed by a pair of wing portions that extend to both sides of the erected portion and are bent toward the center axis along a bending line parallel to the center axis. A coil end holding portion is provided in leading ends of the pair of arms. According to this construction, a dimension of the concentrated power-distribution member is reduced.
    Type: Application
    Filed: February 26, 2013
    Publication date: January 8, 2015
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Kenji Arai