Patents by Inventor Akihiro Yamamoto

Akihiro Yamamoto 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: 20120327260
    Abstract: A parallel operation histogramming device can handle parallel-input data from a plurality of processors to generate frequency data of a histogram. The processing time for generating frequency data of the histogram is independent of the distribution of histogram values in the input data. The device can also reduce the memory area used for accumulating frequency data of the histogram. The device includes a histogram counter circuit which has a plurality of counters equal in number to the number of histogram bins. The counters count in parallel the number of pieces of data for each type of the operation results from the plurality of processors. The counted values from each counter are accumulated to form the frequencies in a histogram.
    Type: Application
    Filed: June 21, 2012
    Publication date: December 27, 2012
    Applicant: Renesas Electronics Corporation
    Inventors: Hideaki KIDO, Akihiro YAMAMOTO, Hiroyuki HAMASAKI, Nobuyasu KANAKAWA
  • Publication number: 20120320833
    Abstract: A radio communication system, including: a base station apparatus; and a terminal apparatus, wherein the base station apparatus and the terminal apparatus transmits to or receives from the terminal apparatus and the base station apparatus respectively a radio signal by using a plurality of frequency bands as a transmission frequency or a reception frequency, the base station apparatus includes a transmission unit which transmits a synchronization signal or a reference signal in each frequency band of the plurality of frequency bands, and the terminal apparatus includes a synchronization control unit which selects at least one synchronization signal or reference signal from the plurality of synchronization signals or reference signals transmitted from the base station apparatus and performs synchronization control based on the selected synchronization signal or reference signal.
    Type: Application
    Filed: August 24, 2012
    Publication date: December 20, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Akihiro Yamamoto, Takayoshi Ode
  • Publication number: 20120302757
    Abstract: An object of the present invention is to provide a method for producing an oxazole compound in a high yield.
    Type: Application
    Filed: January 28, 2011
    Publication date: November 29, 2012
    Applicant: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Akihiro Yamamoto, Koichi Shinhama, Nobuhisa Fujita, Shinji Aki, Shin Ogasawara, Naoto Utsumi
  • Patent number: 8300185
    Abstract: A liquid crystal display device of the present invention includes: a liquid crystal display panel; and first and second light diffusing layers, each of which has a first major surface and a second major surface and each of which is arranged such that the first major surface opposes a viewer side surface of the liquid crystal display panel. Each of the first and second light diffusing layers includes a first region formed of a first substance which has a first refractive index N1 and a plurality of second regions formed of a second substance which has a second refractive index N2(<N1). The plurality of second regions are arranged in the first region at a predetermined pitch P in one direction in a plane parallel to the second major surface. Each of the plurality of second regions forms a plurality of interfaces with the first region, the interfaces being inclined by ?° from the normal of the second major surface.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: October 30, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yusuke Nishihara, Iori Aoyama, Tokio Taguchi, Akihiro Yamamoto, Masumi Kubo
  • Publication number: 20120271496
    Abstract: A rear wheel driving apparatus includes: a left wheel driving device having a motor for driving a left rear wheel, and a planetary gear decelerator; a right wheel driving device having a motor for driving a right rear wheel, and a planetary gear decelerator; and a control device for controlling the motors. The motors are connected to sun gears of the planetary gear decelerators, respectively, the left rear wheel and right rear wheel are connected to the planetary carriers, respectively, and the ring gears are connected to each other. The control device performs driving control on only one of the motors to control the rotations of ring gears.
    Type: Application
    Filed: April 18, 2012
    Publication date: October 25, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: Akihiro YAMAMOTO
  • Patent number: 8289487
    Abstract: An MVA-type LCD capable of displaying with a high contrast ratio is provided. An LCD according to the present invention is an MVA-type LCD including a stripe-shaped rib 21b provided on a first electrode 11 of a liquid crystal layer and a stripe-shaped slit 22 formed in a second electrode 12 of the liquid crystal layer. The rib 21b has a side face whose taper angle in a cross section which is orthogonal to an azimuth direction that the rib 21 extends is 18° or less, and is made of a material such that a film of the material with a thickness corresponding to the height of the rib has an OD value of 0.8 or more.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: October 16, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yusuke Nishihara, Akihiro Yamamoto, Masumi Kubo, Kenji Okamoto
  • Publication number: 20120259492
    Abstract: A vehicle includes a first drive device and a second drive device. The first drive device includes a motor, a motor control device, a connection-disconnection device, and a connection-disconnection device controller. When the vehicle is driven in a state where a driving force of the first drive device is substantially zero, or the vehicle is driven only by a driving force of the second drive device, the connection-disconnection device controller couples the connection-disconnection device to establish a connected state of the connection-disconnection device. The motor control device is configured to perform loss reduction control on the motor to reduce at least one of a loss of the motor and a loss in a power transmission path in power transmitted to the first driving wheel, by establishing the connected state of the connection-disconnection device.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 11, 2012
    Applicant: Honda Motor Co., Ltd
    Inventors: Akihiro YAMAMOTO, Junji Kato, Yuichi Nakamura, Hiroshi Murakami
  • Publication number: 20120259192
    Abstract: Provided are a measurement device, a sensor unit, and a sensor placement method, which enable the suppression of the occurrence of a situation where a measurement carried out with a sensor implanted under the skin, the implanted sensor becomes faulty. A sensor unit is used for measuring numerical information relating to a substance contained in a body fluid in a body. The sensor unit is provided with a sensor a part of which is placed under the skin and generates a signal according to the state of the substance, a base which is disposed on the skin and holds the sensor, a variable mechanism which is attached to the base and enables the position and/or the direction of the sensor with reference to the base to be varied, and an external terminal which is provided in the base and leads the signal generated by the sensor to the outside.
    Type: Application
    Filed: November 25, 2010
    Publication date: October 11, 2012
    Applicant: ARKRAY, INC.
    Inventors: Masashi Tsukada, Yasuhide Kusaka, Akihiro Yamamoto
  • Publication number: 20120244988
    Abstract: An automatic transmission includes: a first planetary gearset including a first sun gear, a first ring gear, and a first pinion carrier; a second planetary gearset including a second sun gear, a second ring gear, and a second pinion carrier; an input shaft constantly coupled to the first sun gear; an output shaft constantly coupled to the second pinion carrier; a first rotary member constantly connecting the first ring gear and the second sun gear; a first friction element selectively connecting the first sun gear and the second ring gear; a second friction element selectively connecting the first pinion carrier and the second ring gear; a third friction element selectively interrupting a rotation of the first pinion carrier; and a fourth friction element selectively interrupting a rotation of the first rotary member, the automatic transmission attaining first to fourth forward speeds and one reverse speed.
    Type: Application
    Filed: February 22, 2012
    Publication date: September 27, 2012
    Inventors: Kazuaki AOTA, Yukiyoshi INUTA, Akihiro YAMAMOTO, Takayuki OKUDA, Kazuo OGURI, Katsunori YAMASHITA
  • Publication number: 20120226099
    Abstract: An endoscope apparatus includes: an endoscope including at least an elongated insertion section having flexibility and an image pickup device, the insertion section including, at a distal end portion, an observation window forming an observation optical system and an illumination window forming an illumination optical system and the image pickup device including an image pickup surface on which an optical image passing through the observation window is formed; and an apparatus body incorporating a display section that displays an image picked up by the image pickup device, the apparatus body including the display section on one surface having a largest area of the apparatus body and including a holding member that holds the insertion section on a rear surface of the one surface in a wound state.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 6, 2012
    Inventors: Akihiro YAMAMOTO, Kiyotaka SHIOIRI, Mitsunobu ONO, Nobuyuki MOTOKI
  • Patent number: 8239600
    Abstract: The present invention provides a data processing system having excellent immediacy of interrupting process. Different interrupt request signals are supplied from a circuit module which can be commonly used by a plurality of central processing units to a plurality of interrupt controllers assigned to central processing units, respectively. In response to the input interrupt request signal, each of the interrupt controllers notifies the corresponding central processing unit of an interrupt. The circuit module selects an interrupt controller for supplying an interrupt request signal from the plural interrupt controllers. For example, the circuit module identifies a central processing unit which instructed a start request and supplies an interrupt request signal to an interrupt controller corresponding to the central processing unit. The burden of the interrupting process of the single central processing unit can be lessened.
    Type: Grant
    Filed: September 12, 2009
    Date of Patent: August 7, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Akihiro Yamamoto, Yasuhiko Hoshi, Hiroyuki Hamasaki
  • Publication number: 20120143426
    Abstract: In a drive controller for a vehicle including: a drive source configured to output a drive force to a first axle serving as one of front and rear wheel axles; an electric motor configured to output a drive force to a second axle serving as the other of the front and rear wheel axles; a one-way power transmission device disposed on a power transmission pathway between the second axle and the electric motor so as to transmit a power drive force from the electric motor to the second axle; a two-way power transmission device that transmits a rotation power from the second axle to the electric motor or transmits the power drive force and a regeneration drive force from the electric motor to the second axle, the drive controller includes: a first detector that detects a speed of the vehicle or a rotation speed of the second axle; a target rotation speed determination section that determines a target rotation speed of the electric motor based on the speed of the vehicle or the rotation speed of the second axle; a se
    Type: Application
    Filed: July 30, 2010
    Publication date: June 7, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Akihiro Yamamoto, Tomokazu Katayama, Yoshihiro Kanamaru, Sei Shinohara, Nobuyuki Hiramatsu
  • Publication number: 20120118652
    Abstract: In the case where a vehicle 3 runs forward, when both two electric motors 2A, 2B power the vehicle, an oil pressure controller 48 releases hydraulic brakes 60A, 60B; when both the two electric motors 2A, 2B perform a regenerative braking, actuates the hydraulic brakes 60A, 60B. When one of the two electric motors 2A, 2B powers the vehicle and the other motor performs regenerative braking, the oil pressure controller 48 controls releases or actuates the hydraulic brakes 60A, 60B based on a power driving torque and a regenerative braking torque.
    Type: Application
    Filed: July 30, 2010
    Publication date: May 17, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Akihiro Yamamoto, Sei Shinohara
  • Publication number: 20120105930
    Abstract: A galvanoscanner including: a rotor including a shaft as a rotational center, and permanent magnets disposed around the shaft and polarized to a plurality of poles in a circumferential direction of the shaft; and a stator disposed in the outside of the rotor through a clearance and including coils, a yoke, and an outer casing so that the rotor swings in a predetermined angle range; wherein: the permanent magnets are provided with grooves which are formed in a direction of the rotation shaft so as to straddle circumferentially adjacent magnetic poles of the permanent magnets; and the permanent magnets are parted into at least two parts per pole by parting lines. Thus, the ratio of the torque constant to the moment of inertia can be improved so that the current required for driving can be reduced and reduction of power consumption at driving time can be attained.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 3, 2012
    Applicant: Hitachi Via Mechanics, Ltd.
    Inventors: Akihiro Yamamoto, Akira Doi, Daisuke Matsuka, Souichi Toyama, Hiroyuki Sugawara
  • Patent number: 8159432
    Abstract: A liquid crystal display device includes a plurality of pixels each connected to a signal line via a switching element. Each pixel includes first and second sub-pixels having voltage vs. luminance characteristics different from each other with respect to a signal voltage supplied from the signal line. A threshold signal voltage of the first sub-pixel is lower than that of the second sub-pixel. The pixels form color display pixels which are red, green pixel and blue pixels. Where the area ratio of the first sub-pixel in each of the red, green and blue pixels is SR1, SG1 and SB1, and the ratio of the lighting-up time period of the first sub-pixel of each of the red, green and blue pixels in one vertical scanning period is TR1, TG1 and TB1, the relationship of (SR1×TR1)>(SG1×TG1)>(SB1×TB1) holds.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: April 17, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yohichi Naruse, Takashi Ochi, Masumi Kubo, Akihiro Yamamoto
  • Patent number: 8154692
    Abstract: A liquid crystal display device of the present invention includes a liquid crystal display panel, and a light diffusing layer which has first and second major surfaces and which is arranged such that the first major surface opposes a viewer side surface of the liquid crystal display panel. The light diffusing layer includes a first region formed of a first substance which has a first refractive index N1 and a plurality of second regions formed of a second substance which has a second refractive index N2 (<N1). The second regions are arranged in the first region at a predetermined pitch P in one direction in a plane parallel to the second major surface, each of the second regions forms interfaces with the first region, the interfaces being inclined by ?° from a normal of the second major surface. ?B which is expressed by ?B=tan?1 (a/Lb) is not more than 1.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: April 10, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yusuke Nishihara, Iori Aoyama, Tokio Taguchi, Akihiro Yamamoto, Masumi Kubo
  • Publication number: 20120075541
    Abstract: The liquid crystal display device of this invention includes picture element regions each defined by a first electrode provided on a first substrate and a second electrode provided on a second substrate so as to oppose the first electrode via a liquid crystal layer sandwiched therebetween. In each of the picture element regions, the first electrode includes a solid portion and a nonsolid portion. The liquid crystal display device further includes a pair of polarizing plates disposed with polarization axes thereof crossing each other substantially perpendicularly. The polarization axis of one of the pair of polarizing plates is substantially parallel to a direction in which the solid portion extends. When a voltage is applied between the first electrode and the second electrode, in each of the picture element regions, liquid crystal molecules of the liquid crystal layer are in a radially-inclined orientation state.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 29, 2012
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Masumi Kubo, Akihiro Yamamoto, Takashi Ochi, Tetsuhiro Yamaguchi, Naoshi Yamada, Katsuhiko Morishita, Kiyoshi Ogishima
  • Publication number: 20120051032
    Abstract: A plurality of low refractive index material-exposed portions (23) having the same area and a plurality of high refractive index material-exposed portions (22) having different areas are mixed and arranged on an emission surface (11U) of a light emission angle adjusting sheet (11). In particular, a low refractive index material (13) has a shape having a width which monotonically decreases toward a light receiving surface (11B) side.
    Type: Application
    Filed: February 22, 2010
    Publication date: March 1, 2012
    Inventors: Iori Aoyama, Akihiro Yamamoto
  • Publication number: 20120053608
    Abstract: The present invention provides a sensor insertion and removing device which is user-friendly and which does not cause infection. The sensor insertion and removing device has a sensor; a puncture blade member; a housing which houses the sensor and the puncture blade member; a guide part which is provided within the housing and which glidably supports the puncture blade member; a puncture blade operating part which inserts the sensor under the skin by causing the puncture blade member to glide along the guide part integrally with the sensor, upon delivering the puncture blade member outside the housing to puncture the skin, and which causes the puncture blade member to glide along the guide part in a state of being separated from the sensor, upon removing the puncture blade member from under the skin into the housing, and a sensor operating part which pulls out the sensor from under the skin and removes it from under the skin into the housing.
    Type: Application
    Filed: August 30, 2011
    Publication date: March 1, 2012
    Applicant: ARKRAY, INC.
    Inventors: Tomohiro SHOSHIHARA, Yosuke MURASE, Akihiro YAMAMOTO
  • Publication number: 20120035441
    Abstract: A mount unit 10 is used for fixing, to a living body, a sensor 20 of which a portion 20a can be placed under the skin of the living body. The mount unit 10 includes a main body portion 11 that holds a placement of the portion of the sensor 20 under the skin of the living body and two or more holding portions 12a to 12d attached to the main body portion 11. Each of the holding portions 12a to 12d includes an adhesive material layer 13 capable of adhering to the living body and is movable so as to allow for selection between a state in which the adhesive material layer 13 is in contact with the living body and a state in which the adhesive material layer 13 is separate from the living body.
    Type: Application
    Filed: August 2, 2011
    Publication date: February 9, 2012
    Applicant: ARKRAY, INC.
    Inventors: Tomohiro SHOSHIHARA, Akihiro YAMAMOTO