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).
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Publication number: 20220079676Abstract: 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: ApplicationFiled: August 16, 2021Publication date: March 17, 2022Applicant: FUJITSU LIMITEDInventor: Takashi IWAMURA
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Patent number: 10262762Abstract: 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: GrantFiled: July 31, 2014Date of Patent: April 16, 2019Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYOInventors: Takashi Iwamura, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
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Patent number: 10013533Abstract: 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: GrantFiled: May 1, 2013Date of Patent: July 3, 2018Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYOInventors: Takashi Iwamura, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Junichi Okada
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Publication number: 20180050513Abstract: 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: ApplicationFiled: February 24, 2016Publication date: February 22, 2018Inventors: Mikihisa Mizuno, Shinobu Hara, Shogo Sakamoto, Ryosuke Endo, Takashi Iwamura
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Patent number: 9208617Abstract: 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: GrantFiled: May 30, 2012Date of Patent: December 8, 2015Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYOInventors: Kohei Hatanaka, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada, Yoshimasa Kadooka, Takashi Iwamura
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Publication number: 20150046139Abstract: 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: ApplicationFiled: July 31, 2014Publication date: February 12, 2015Applicants: FUJITSU LIMITED, THE UNIVERSITY OF TOKYOInventors: Takashi IWAMURA, Toshiaki HISADA, Seiryo SUGIURA, Takumi WASHIO, Jun-ichi OKADA
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Publication number: 20130304445Abstract: 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: ApplicationFiled: May 1, 2013Publication date: November 14, 2013Applicants: The University of Tokyo, FUJITSU LIMITEDInventors: Takashi Iwamura, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Junichi Okada
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Patent number: 8576681Abstract: 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: GrantFiled: January 5, 2012Date of Patent: November 5, 2013Assignee: Sony CorporationInventors: Goro Fujita, Takashi Iwamura
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Patent number: 8526289Abstract: 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: GrantFiled: June 10, 2010Date of Patent: September 3, 2013Assignee: Sony CorporationInventors: Goro Fujita, Daisuke Ueda, Mitsuaki Oyamada, Takashi Iwamura, Kimihiro Saito, Jingcheng Yuan
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Publication number: 20130095286Abstract: 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: ApplicationFiled: June 24, 2011Publication date: April 18, 2013Applicant: SONY CORPORATIONInventors: Yo Ota, Takashi Iwamura, Mitsuaki Oyamada, Daisuke Ueda
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Publication number: 20130002677Abstract: 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: ApplicationFiled: May 30, 2012Publication date: January 3, 2013Applicants: The University of Tokyo, FUJITSU LIMITEDInventors: Kohei HATANAKA, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada, Yoshimasa Kadooka, Takashi Iwamura
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Patent number: 8248900Abstract: 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: GrantFiled: September 13, 2007Date of Patent: August 21, 2012Assignee: Sony CorporationInventors: Kimihiro Saito, Toshihiro Horigome, Takao Kondo, Kunihiko Hayashi, Seiji Kobayashi, Takashi Iwamura, Sakuya Tamada
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Publication number: 20120099411Abstract: 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: ApplicationFiled: January 5, 2012Publication date: April 26, 2012Applicant: Sony CorporationInventors: Goro Fujita, Takashi Iwamura
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Patent number: 8165005Abstract: 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: GrantFiled: March 25, 2009Date of Patent: April 24, 2012Assignee: Sony CorporationInventors: Daisuke Ueda, Takashi Iwamura
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Patent number: 8116194Abstract: 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: GrantFiled: January 8, 2009Date of Patent: February 14, 2012Assignee: Sony CorporationInventors: Takashi Iwamura, Mitsuaki Oyamada, Daisuke Ueda
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Patent number: 8102742Abstract: 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: GrantFiled: August 20, 2009Date of Patent: January 24, 2012Assignee: Sony CorporationInventors: Goro Fujita, Takashi Iwamura
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Publication number: 20110262678Abstract: 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: ApplicationFiled: April 8, 2011Publication date: October 27, 2011Applicant: SONY CORPORATIONInventors: Yo Ota, Takashi Iwamura
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Publication number: 20100322063Abstract: 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: ApplicationFiled: June 10, 2010Publication date: December 23, 2010Applicant: Sony CorporationInventors: Goro Fujita, Daisuke Ueda, Mitsuaki Oyamada, Takashi Iwamura, Kimihiro Saito, Jingcheng Yuan
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Publication number: 20100189948Abstract: 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: ApplicationFiled: May 11, 2009Publication date: July 29, 2010Inventors: Takashi Iwamura, Mitsuaki Oyamada, Daisuke Ueda
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Publication number: 20100182895Abstract: 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: ApplicationFiled: January 12, 2010Publication date: July 22, 2010Applicant: Sony CorporationInventors: Mitsuaki Oyamada, Takashi Iwamura, Daisuke Ueda, Takehide Endo