Patents by Inventor Tatsuya Ishikawa

Tatsuya Ishikawa 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: 20150149145
    Abstract: A simulation apparatus that performs parallel execution of multiple logical processes obtained by modeling a plurality of components included in a system to be simulated. The apparatus includes: (i) a condition generating unit configured to generate, on the basis of communication delays between the multiple logical processes, constraint conditions to be satisfied by initial time shifts given to the multiple logical processes and look-ahead times each to be permitted by a message sent from a logical process serving as a communication source to a logical process serving as a communication destination to permit look-ahead; and (ii) a solver unit configured to solve an optimization problem that satisfies the constraint conditions and minimizes overhead in communication of messages between the multiple logical processes, and obtain the initial time shifts of the multiple logical processes and the look-ahead times between the multiple logical processes.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 28, 2015
    Inventors: Tatsuya Ishikawa, Asim Munawar, Shuichi Shimizu
  • Publication number: 20150121695
    Abstract: A method of assembling a swash plate-type fluid machine, comprising: bringing, with each of a plurality of pistons suspended by a swash plate, a shaft assembly in a vertical axis posture and a cylinder block close to each other to insert each of the pistons into a corresponding one of cylinder bores, in incorporating the shaft assembly, which has the plurality of pistons each installed on the swash plate via a pair of shoes matching with both end surfaces of the swash plate, respectively, into the cylinder block.
    Type: Application
    Filed: January 14, 2015
    Publication date: May 7, 2015
    Inventor: Tatsuya ISHIKAWA
  • Patent number: 9001494
    Abstract: A dielectric ceramic that contains, as its main constituent, a perovskite-type compound containing Ba and Ti, and, with respect to the Ti content of 100 parts by mole, contains Re1 (Re1 is at least one element of La and Nd) in the range of 0.15 to 3 parts by mole, Y in the range of 0.1 to 3 parts by mole, Mg in the range of 0.3 to 13 parts by mole, and Fe in the range of 0.01 to 5 parts by mole.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: April 7, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kazuji Kushiro, Tatsuya Ishikawa, Tomomitsu Yamanishi, Naoki Kawara
  • Patent number: 8959981
    Abstract: A measurement apparatus includes a first Doppler sensor which outputs a first transmission signal and receives a first Doppler signal, that is the first transmission signal returned after being reflected by an impacting object, a timing detection unit that detects an impact timing which is a moment when an impacted object is impacted by the impacting object, an impacting object speed computing unit that computes a speed of the impacting object based on the first Doppler signals obtained from the detected impact timing to a timing before a predetermined period, and an imaging unit that images the impacted object immediately after the impact so as to be used for computing a motion state of the impacted object, based on the computed speed of the impacting object.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: February 24, 2015
    Assignees: Bridgestone Sports Co., Ltd., Flovel Co., Ltd.
    Inventors: Masayoshi Arakawa, Tetsuya Nakamura, Takanori Shibui, Tatsuya Ishikawa, Masataka Kai, Naoyuki Miyagawa
  • Patent number: 8949086
    Abstract: Methods, an apparatus, and a computer program product for determining whether or not a particle belongs to free surface particles, in a calculation process of a particle method in which a continuum subjected to calculation analysis is collectively modeled with a free surface by a plurality of particles. One of the methods includes the steps of: determining whether any other particle exists within a predetermined range with respect to the particle by referencing to identification information stored in a memory, where the other particle belongs to the free surface, and storing in the memory near free surface identification information which is set as near free surface if the other particle belonging to the free surface exists and set as sufficiently inside if the other free surface particle belonging to the free surface does not exist.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: February 3, 2015
    Assignee: International Business Machines Corporation
    Inventor: Tatsuya Ishikawa
  • Patent number: 8935135
    Abstract: Methods, an apparatus, and a computer program product for determining whether or not a particle belongs to free surface particles, in a calculation process of a particle method in which a continuum subjected to calculation analysis is collectively modeled with a free surface by a plurality of particles. One of the methods includes the steps of: determining whether any other particle exists within a predetermined range with respect to the particle by referencing to identification information stored in a memory, where the other particle belongs to the free surface, and storing in the memory near free surface identification information which is set as near free surface if the other particle belonging to the free surface exists and set as sufficiently inside if the other free surface particle belonging to the free surface does not exist.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: January 13, 2015
    Assignee: International Business Machines Corporation
    Inventor: Tatsuya Ishikawa
  • Publication number: 20150002829
    Abstract: Provided is a projection-type image display device which by means of a projection lens (2) magnifies and projects an optical image formed by a light source and an image display element, wherein an error indicator (5) for indicating anomalies in the device is disposed on the rear surface opposite the front surface of a device housing (1) to which the projection lens (2) is attached. The projection-type image display device further includes an AC voltage monitor unit (12) for monitoring voltage waveforms supplied form an external power source and retaining voltage waveform data during the latest prescribed period in a memory, and reads out the voltage waveform data from the external power source retained in the memory and displays the voltage waveform data on the error indicator (5) as said anomalies.
    Type: Application
    Filed: February 9, 2012
    Publication date: January 1, 2015
    Inventors: Koji Hirata, Miyuki Ikeda, Tatsuya Ishikawa, Hiroyuki Shinji
  • Publication number: 20140357427
    Abstract: A selection support apparatus acquires a plurality of types of characteristic data representing a swing characteristic of a testing golfer based on a test shot result of a golf club. The apparatus calculates each of recommended values for the testing golfer in association with a plurality of types of characteristic values that characterize a component of a golf club based on the plurality of types of characteristic data. The apparatus selects, based on the recommended values and component information representing a correspondence between components and the plurality of types of characteristic values, a recommended component from components listed in the component information.
    Type: Application
    Filed: April 23, 2014
    Publication date: December 4, 2014
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventors: Tatsuya ISHIKAWA, Hirotada IWADE
  • Publication number: 20140357426
    Abstract: A selection support apparatus acquires a plurality of types of characteristic data representing a swing characteristic of a testing golfer based on a test shot result of a golf club. The apparatus determines a swing type of the testing golfer out of swing types classified in advance based on at least one of the plurality of types of characteristic data. The apparatus calculates a recommended value for the testing golfer in association with a characteristic value that characterizes a component of a golf club based on at least one of the plurality of types of characteristic data. The apparatus selects, based on the swing type of the testing golfer, the recommended value, and component information representing a correspondence between components, the swing types, and the characteristic value, a recommended component from the components listed in the component information.
    Type: Application
    Filed: April 16, 2014
    Publication date: December 4, 2014
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventors: Tatsuya ISHIKAWA, Hirotada IWADE
  • Publication number: 20140333590
    Abstract: A digital pen includes a light emitting element configured to emit a light ray of a specific wavelength region; a pen tip configured to emit the light ray on a writing surface; a sensor configured to output information indicative of whether the pen tip contacts the writing surface; a controller configured to detect if the pen tip contacts the writing surface based on the information from the sensor; and a holding mechanism configured to hold pressure applied onto the sensor to be constant, through an elastic force of an elastic body. The controller determines that the pen tip contacts the writing surface when the sensor is free from the pressure, thereby dissolving a problem of an uncomfortable feeling for a user, which is caused by the fact that the track written by the digital pen is not immediately reflected on a screen.
    Type: Application
    Filed: February 1, 2012
    Publication date: November 13, 2014
    Applicant: Hitachi Maxell, Ltd.
    Inventors: Koji Hirata, Tatsuya Ishikawa, Tsuneo Fujikura, Shuji Kato, Miyuki Ikeda, Yoshiho Seo, Takashi Kanbara, Toshiyuki Kimoto
  • Patent number: 8874322
    Abstract: A vehicle steering controller includes a shape recognizer that recognizes a shape of a road on the basis of a captured image, a steering control unit that controls steering of a vehicle on the basis of the shape of the road recognized by the shape recognizer, and a determiner that determines whether or not the shape of the road recognized by the shape recognizer is that of a transitional section between a curved road section and a linear road section. If the determination made by the determiner is negative, then the shape recognizer recognizes the shape of the road by performing an approximation using an approximation expression having a degree of one or two, otherwise the shape recognizer recognizes the shape of the road by performing an approximation using an approximation expression having a degree of three.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: October 28, 2014
    Assignee: Honda Motor Co., Ltd
    Inventors: Naoki Mori, Tatsuya Ishikawa
  • Patent number: 8839937
    Abstract: Upon shifting a parking lock device from an unlocked state to a locked state, the power supply to a motor is interrupted when a fitting member reaches a first position of an outer peripheral surface of a position determining plate. At that moment, the rotational energy of a rotation body is absorbed by a rotational energy absorption member. Also, upon shifting the parking lock device from the locked state to the unlocked state, the power supply to the motor is interrupted when the fitting member reaches a second position. At that moment, the rotational energy of the rotation body is absorbed by the rotational energy absorption member as well.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: September 23, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Shinichiro Hazama, Tatsuya Ishikawa
  • Patent number: 8830493
    Abstract: A computer readable information recording medium stores a printing control program. The printing control program, when executed by one or plural processors, functions of a first conversion function part configured to derive data of a form of page description language converted from printing data, based on the printing data; a second conversion function part configured to disassemble the data of the form of page description language converted from the printing data and data to be inserted into the data of the form of page description language converted from the printing data, and derive disassembled printing output data, based on data of a form of job definition format associated with the printing data and the data of the form of page description language converted from the printing data; and a transmission function part configured to transmit the disassembled printing output data to a printer apparatus.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: September 9, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshikazu Ito, Takao Suzuki, Tatsuya Ishikawa, Yusuke Karube
  • Publication number: 20140229073
    Abstract: A vehicle steering controller includes a shape recognizer that recognizes a shape of a road on the basis of a captured image, a steering control unit that controls steering of a vehicle on the basis of the shape of the road recognized by the shape recognizer, and a determiner that determines whether or not the shape of the road recognized by the shape recognizer is that of a transitional section between a curved road section and a linear road section. If the determination made by the determiner is negative, then the shape recognizer recognizes the shape of the road by performing an approximation using an approximation expression having a degree of one or two, otherwise the shape recognizer recognizes the shape of the road by performing an approximation using an approximation expression having a degree of three.
    Type: Application
    Filed: February 11, 2014
    Publication date: August 14, 2014
    Applicant: HONDA MOTOR CO., LTD
    Inventors: Naoki Mori, Tatsuya Ishikawa
  • Patent number: 8695191
    Abstract: An assembly device includes a shaft assembly having a plurality of pistons installed on an outer peripheral portion of a swash plate via shoes. The assembly device has a shaft support portion which supports a shaft having the swash plate in a vertical axis posture, a guide member, a shoe incorporation mechanism, a carriage which conveys the plurality of pistons in the vertical axis posture, and a piston holding portion which holds the plurality of pistons. The guide member is equipped with a first guide surface and a second guide surface.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: April 15, 2014
    Assignee: Sanyo Machine Works, Ltd.
    Inventor: Tatsuya Ishikawa
  • Publication number: 20140092526
    Abstract: A dielectric ceramic that contains, as its main constituent, a perovskite-type compound containing Ba and Ti, and, with respect to the Ti content of 100 parts by mole, contains Re1 (Re1 is at least one element of La and Nd) in the range of 0.15 to 3 parts by mole, Y in the range of 0.1 to 3 parts by mole, Mg in the range of 0.3 to 13 parts by mole, and Fe in the range of 0.01 to 5 parts by mole.
    Type: Application
    Filed: December 2, 2013
    Publication date: April 3, 2014
    Applicant: MURATA MANUFACTURING CO.,LTD.
    Inventors: Kazuji Kushiro, Tatsuya Ishikawa, Tomomitsu Yamanishi, Naoki Kawara
  • Publication number: 20140091432
    Abstract: A ceramic powder for use in a grain boundary insulated semiconductor ceramic that has an excellent ESD withstanding voltage, a semiconductor ceramic capacitor using the ceramic powder, and a manufacturing method therefor. The ceramic powder for use in a SrTiO3 based grain boundary insulated semiconductor ceramic has a specific surface area of 4.0 m2/g or more and 8.0 m2/g or less, and a cumulative 90% grain size D90 of 1.2 ?m or less.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 3, 2014
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Mitsutoshi Kawamoto, Atsushi Sano, Tatsuya Ishikawa, Yasutomo Kobayashi, Yoshihiro Fujita, Yuki Kimura, Yuichi Kusano
  • Publication number: 20130291576
    Abstract: An air conditioning system includes a plurality of air conditioners to which electric power, temperature detection sensors for respectively detecting interior temperatures in air conditioning regions corresponding to the air conditioners, a temperature storage section for storing control temperatures of the plurality of air conditioners and the detected interior temperatures, a power restoration detection section for detecting that power supply is restored after power interruption, and an initiation timing setting section for, in a case where power restoration is detected, comparing the stored control temperatures with interior temperatures detected after power restoration or before power interruption and stored in the temperature storage section, and setting initiation timings of the air conditioners such that the air conditioner corresponding to the air conditioning region having a larger air conditioning load based on a difference between the temperatures is initiated earlier.
    Type: Application
    Filed: December 6, 2011
    Publication date: November 7, 2013
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kunihide Wada, Tatsuya Ishikawa
  • Publication number: 20130269186
    Abstract: A method of assembling a shaft assembly having a plurality of pistons each installed on a swash plate via a pair of shoes matching with both end surfaces of the swash plate, respectively. The method includes: supporting a shaft having the swash plate in a vertical axis posture; incorporating the shoes between a first guide surface of a guide member and each of the pistons and between a second guide surface of the guide member and that piston, respectively; guiding the plurality of pistons to the swash plate in the vertical axis posture using the guide member; and matching the shoes with both the end surfaces of the swash plate respectively while disposing the pistons at circumferentially equidistant positions of the swash plate, respectively.
    Type: Application
    Filed: June 17, 2013
    Publication date: October 17, 2013
    Inventor: Tatsuya ISHIKAWA
  • Patent number: 8491415
    Abstract: A putter head prevents a ball from sliding over a green while maintaining golfers' preferred hitting feel and roll of the ball. A face insert fitted in a face of the putter head has an outer layer which serves as a ball-hitting surface and an inner layer which is located on an inner side of a head body. A smash factor of a second polymer material forming the inner layer is greater than a smash factor of a first polymer material forming the outer layer. Two types of groove, grooves of a first groove group and grooves of a second groove group are formed in an external surface of the outer layer. The grooves of the first groove group may be 0.25 to 1.6 mm wide and 0.05 to 0.5 mm deep and the grooves of the second groove group may be 0.075 to 0.5 mm wide and 0.025 to 0.1 mm deep.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: July 23, 2013
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Tatsuya Ishikawa, Wataru Ban, Fumiaki Sato