Patents by Inventor Takashi Iwamura

Takashi Iwamura 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: 20220079676
    Abstract: A computer acquires a first model representing a first part having periodic motion and a second model representing a second part affected by the periodic motion. The computer calculates a feature by assigning a first state value as an initial value of a variable included in the second model and executing a simulation of the periodic motion for a predetermined number of cycles using the first model, the second model, and the first state value. The computer generates, based on the feature, a third model having fewer variables than the first model and being capable of replacing the first model. The computer continues executing the simulation of the periodic motion until a predetermined convergence condition is met, using the second model and the third model, and extracts a second state value held by the variable included in the second model in a cycle where the convergence condition is met.
    Type: Application
    Filed: August 16, 2021
    Publication date: March 17, 2022
    Applicant: FUJITSU LIMITED
    Inventor: Takashi IWAMURA
  • Patent number: 10262762
    Abstract: In a vascular data generation apparatus, a processor generates first vascular data based on anatomical statistics data about vessels of an organ. This first vascular data has a tree structure representing a vascular network in the organ. The processor further generates second vascular data representing a plurality of vessels that connect a plurality of nodes in a geometric model of the organ with the vascular network represented by the first vascular data.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: April 16, 2019
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Takashi Iwamura, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10013533
    Abstract: A geometric model of an organ represents its shape as a collection of elements formed from nodes and connections among them. A first vessel network model represents a network of first vessels whose diameters are larger than or equal to a threshold. A plurality of second vessel networks each represent a network of second vessels whose diameters are smaller than the threshold. In a simulator apparatus, a first analysis unit analyzes hemodynamics in the first vessels, based on the geometric model and first vessel network model of the organ and reflecting the motion of the organ. A second analysis unit analyzes hemodynamics in the second vessel network models connected to the nodes, by using output data of the first analysis unit which indicates the hemodynamics in the first vessels at each of the nodes.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: July 3, 2018
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Takashi Iwamura, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Junichi Okada
  • Publication number: 20180050513
    Abstract: An anti-fogging and anti-fouling laminate, including a substrate made of a resin; and an anti-fogging and anti-fouling layer on the substrate made of a resin, wherein the anti-fogging and anti-fouling layer comprises micro convex portions or micro concave portions in a surface thereof wherein the anti-fogging and anti-fouling layer comprises a hydrophilic molecular structure, and wherein a pure water contact angle of the surface of the anti-fogging and anti-fouling layer is 90° or more.
    Type: Application
    Filed: February 24, 2016
    Publication date: February 22, 2018
    Inventors: Mikihisa Mizuno, Shinobu Hara, Shogo Sakamoto, Ryosuke Endo, Takashi Iwamura
  • Patent number: 9208617
    Abstract: A shape data generation method includes: identifying, from among a plural vertices of a first shape to be transformed, one or plural first vertices satisfying a predetermined condition including a condition that a normal line of a vertex to be processed crosses with a second shape that is a shape of a transformation target, which is identified from image data; transforming the first shape so as to move each of the one or plural identified first vertices a predetermined distance toward a corresponding normal direction of the identified first vertex; and storing data concerning the plural vertices of the transformed first shape after the identifying and the transforming are executed the predetermined number of times.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: December 8, 2015
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Kohei Hatanaka, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada, Yoshimasa Kadooka, Takashi Iwamura
  • Publication number: 20150046139
    Abstract: In a vascular data generation apparatus, a processor generates first vascular data based on anatomical statistics data about vessels of an organ. This first vascular data has a tree structure representing a vascular network in the organ. The processor further generates second vascular data representing a plurality of vessels that connect a plurality of nodes in a geometric model of the organ with the vascular network represented by the first vascular data.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 12, 2015
    Applicants: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Takashi IWAMURA, Toshiaki HISADA, Seiryo SUGIURA, Takumi WASHIO, Jun-ichi OKADA
  • Publication number: 20130304445
    Abstract: A geometric model of an organ represents its shape as a collection of elements formed from nodes and connections among them. A first vessel network model represents a network of first vessels whose diameters are larger than or equal to a threshold. A plurality of second vessel networks each represent a network of second vessels whose diameters are smaller than the threshold. In a simulator apparatus, a first analysis unit analyzes hemodynamics in the first vessels, based on the geometric model and first vessel network model of the organ and reflecting the motion of the organ. A second analysis unit analyzes hemodynamics in the second vessel network models connected to the nodes, by using output data of the first analysis unit which indicates the hemodynamics in the first vessels at each of the nodes.
    Type: Application
    Filed: May 1, 2013
    Publication date: November 14, 2013
    Applicants: The University of Tokyo, FUJITSU LIMITED
    Inventors: Takashi Iwamura, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Junichi Okada
  • Patent number: 8576681
    Abstract: An optical information recording medium includes a recording layer in which a track is formed, the track having recording marks linearly arranged thereon. Each recording mark has a dimension corresponding to a reference mark length, which serves as a reference, in a track direction along which the track extends, the dimension being smaller than dimensions of the recording mark in two directions perpendicular to the track direction.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: November 5, 2013
    Assignee: Sony Corporation
    Inventors: Goro Fujita, Takashi Iwamura
  • Patent number: 8526289
    Abstract: An optical information reproducing apparatus includes: an irradiation section irradiating a light beam onto an optical information recording medium, in which holes are formed along a virtual track on a recording medium, along the virtual track; a light receiving section receiving a reflected light beam when the light beam is reflected by the optical information recording medium and sequentially generating a light receiving signal corresponding to the light intensity; a detection section detecting a variation pattern appearing when a signal level of the light receiving signal changes according to the hole; and a code string generating section, when generating a code string corresponding to the signal level, generating a code corresponding to the one hole from the variation pattern if the variation pattern falls within a range and generating a code string, which includes a plurality of codes, from the variation pattern if the variation pattern exceeds the range.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: September 3, 2013
    Assignee: Sony Corporation
    Inventors: Goro Fujita, Daisuke Ueda, Mitsuaki Oyamada, Takashi Iwamura, Kimihiro Saito, Jingcheng Yuan
  • Publication number: 20130095286
    Abstract: A recording layer is formed from an organic material (thermoplastic resin, thermosetting resin) having an oxygen element ratio of 9.1% or more. Examples include polyethersulfone, polyimide, and polyethylene. Alternatively, the recording layer is formed from a material in which a low-molecular compound is added to a resin and which has an oxygen element ratio after mixing of 9.1% or more.
    Type: Application
    Filed: June 24, 2011
    Publication date: April 18, 2013
    Applicant: SONY CORPORATION
    Inventors: Yo Ota, Takashi Iwamura, Mitsuaki Oyamada, Daisuke Ueda
  • Publication number: 20130002677
    Abstract: A disclosed method is a shape data generation method including: identifying, from among a plural vertices of a first shape to be transformed, one or plural first vertices satisfying a predetermined condition including a condition that a normal line of a vertex to be processed crosses with a second shape that is a shape of a transformation target, which is identified from image data; transforming the first shape so as to move each of the one or plural identified first vertices a predetermined distance toward a corresponding normal direction of the identified first vertex; and storing data concerning the plural vertices of the transformed first shape after the identifying and the transforming are executed the predetermined number of times.
    Type: Application
    Filed: May 30, 2012
    Publication date: January 3, 2013
    Applicants: The University of Tokyo, FUJITSU LIMITED
    Inventors: Kohei HATANAKA, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada, Yoshimasa Kadooka, Takashi Iwamura
  • Patent number: 8248900
    Abstract: An optical disc apparatus can highly accurately record a hologram representing information on or reproduce such a hologram from an optical disc. When recording information on an optical disc 100, the optical disc apparatus controls the position of an objective lens OL1 according to the outcome of detection of a red reflected light beam Lr2 so as to make the focus Fr thereof follow a target track and it also makes the focus Fb1 of a blue light beam Lb1 agree with a target mark position by the objective lens OL1 and also the focus Fb2 agree with the target mark position by controlling the position of another objective lens OL2 according to the outcome of detection of the blue light beam Lb1 by way of the objective lenses OL1 and OL2 so as to make the focus Fb1 of the blue light beam Lb1 and the focus Fb2 of the blue light beam Lb2 agree with the target mark position and the blue light beam Lb1 and the blue light beam Lb2 interfere with each other.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: August 21, 2012
    Assignee: Sony Corporation
    Inventors: Kimihiro Saito, Toshihiro Horigome, Takao Kondo, Kunihiko Hayashi, Seiji Kobayashi, Takashi Iwamura, Sakuya Tamada
  • Publication number: 20120099411
    Abstract: An optical information recording medium includes a recording layer in which a track is formed, the track having recording marks linearly arranged thereon. Each recording mark has a dimension corresponding to a reference mark length, which serves as a reference, in a track direction along which the track extends, the dimension being smaller than dimensions of the recording mark in two directions perpendicular to the track direction.
    Type: Application
    Filed: January 5, 2012
    Publication date: April 26, 2012
    Applicant: Sony Corporation
    Inventors: Goro Fujita, Takashi Iwamura
  • Patent number: 8165005
    Abstract: Disclosed is an optical recording method. The optical recording method includes irradiating an area where a recording mark is formed in a medium with a pulse train of laser light, and irradiating the area where the recording mark is formed with continuous-wave laser light that is continuously output.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: April 24, 2012
    Assignee: Sony Corporation
    Inventors: Daisuke Ueda, Takashi Iwamura
  • Patent number: 8116194
    Abstract: The invention is able to enhance a recording speed. In the invention, a recording mark (RM) composed of a cavity is formed by vaporizing a two-photon absorbing material by a two-photon absorption reaction as an embodiment of a photoreaction against a recording light beam (L1) as recording light to be condensed at the time of recording information. Also, in a recording layer (101), the information is reproduced on the basis of a return light beam (L3) formed by modulation of a readout light beam (L2) irradiated as prescribed readout light at the time of reproducing inform in conformity with the presence of absence of the recording mark (RM).
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: February 14, 2012
    Assignee: Sony Corporation
    Inventors: Takashi Iwamura, Mitsuaki Oyamada, Daisuke Ueda
  • Patent number: 8102742
    Abstract: An optical information recording medium includes a recording layer in which a track is formed, the track having recording marks linearly arranged thereon. Each recording mark has a dimension corresponding to a reference mark length, which serves as a reference, in a track direction along which the track extends, the dimension being smaller than dimensions of the recording mark in two directions perpendicular to the track direction.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: January 24, 2012
    Assignee: Sony Corporation
    Inventors: Goro Fujita, Takashi Iwamura
  • Publication number: 20110262678
    Abstract: An optical information recording medium includes a recording layer, wherein the recording layer includes a thermoplastic resin and inorganic oxide particles dispersed in the thermoplastic resin.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 27, 2011
    Applicant: SONY CORPORATION
    Inventors: Yo Ota, Takashi Iwamura
  • Publication number: 20100322063
    Abstract: An optical information reproducing apparatus includes: an irradiation section irradiating a light beam onto an optical information recording medium, in which holes are formed along a virtual track on a recording medium, along the virtual track; a light receiving section receiving a reflected light beam when the light beam is reflected by the optical information recording medium and sequentially generating a light receiving signal corresponding to the light intensity; a detection section detecting a variation pattern appearing when a signal level of the light receiving signal changes according to the hole; and a code string generating section, when generating a code string corresponding to the signal level, generating a code corresponding to the one hole from the variation pattern if the variation pattern falls within a range and generating a code string, which includes a plurality of codes, from the variation pattern if the variation pattern exceeds the range.
    Type: Application
    Filed: June 10, 2010
    Publication date: December 23, 2010
    Applicant: Sony Corporation
    Inventors: Goro Fujita, Daisuke Ueda, Mitsuaki Oyamada, Takashi Iwamura, Kimihiro Saito, Jingcheng Yuan
  • Publication number: 20100189948
    Abstract: The invention allows two-photon absorption to occur in response to a short-wavelength light beam. The recording layer (101) of the optical information recording medium (100) of the invention contains, as a two-photon absorbing material, a compound represented by general formula (1) having a hexadiyne structure that includes in the center thereof two acetylene groups connected by a ?-bond. At the time of information recording where a recording mark (RM) is formed in the recording layer (101), two-photon absorption occurs in response to a condensed, short-wavelength recording light, whereby the recording mark (RM) is formed.
    Type: Application
    Filed: May 11, 2009
    Publication date: July 29, 2010
    Inventors: Takashi Iwamura, Mitsuaki Oyamada, Daisuke Ueda
  • Publication number: 20100182895
    Abstract: An optical information recording medium includes a recording layer in which a recording mark formed of a cavity is formed in accordance with a light for recording, and which contains therein a compound having a skeleton expressed by the general formula (1): where R1, R2, R3, and R4 are either hydrogen atoms or substituents.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 22, 2010
    Applicant: Sony Corporation
    Inventors: Mitsuaki Oyamada, Takashi Iwamura, Daisuke Ueda, Takehide Endo