Patents by Inventor Hajime Takeya
Hajime Takeya 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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Patent number: 7619326Abstract: A satellite equipment panel on which may be mounted an installation equipment of a predetermined function, connectable by an interface, constitutes an artificial satellite. The satellite equipment panel includes a panel body, at least two interfaces for an interconnection to another satellite equipment panel, a line transfer switch disposed within the panel body for line transferring of the interconnection between the interfaces, wiring disposed within the panel body and connected at one end to one of the interfaces and at the other end to the line transfer switch for interconnecting the interfaces on that panel body. The interfaces and the wiring, in cooperation with a support structure, constitute a wiring module disposed within the panel body. The interface may comprise at least one of interfaces of electric communication, optical communication, and optical sensor.Type: GrantFiled: September 25, 2006Date of Patent: November 17, 2009Assignee: Mitsubishi Electric CorporationInventors: Hajime Takeya, Tsuyoshi Ozaki, Hirotsugu Morinaga, Shinji Badono
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Publication number: 20090011175Abstract: Provided is an advanced grid structure having high strength and low thermal expansion characteristics. The advanced grid structure includes: a first grid side group extending in the same direction as a first tape prepreg group and constituting a side of a grid group; a second grid side group extending in the same direction as a second tape prepreg group and constituting a side of the grid group; and a third grid side group extending in the same direction as a third tape prepreg group and constituting a side of the grid group, in which: a structure ratio of the advanced grid structure is larger than 0 and 0.Type: ApplicationFiled: June 2, 2008Publication date: January 8, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kazushi SEKINE, Hajime Takeya, Tsuyoshi Ozaki, Masami Kume
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Publication number: 20070221786Abstract: A satellite equipment panel on which may be mounted an installation equipment of a predetermined function, connectable by an interface, constitutes an artificial satellite. The satellite equipment panel includes a panel body, at least two interfaces for an interconnection to another satellite equipment panel, a line transfer switch disposed within the panel body for line transferring of the interconnection between the interfaces, a wiring disposed within the panel body and connected at one end to one of the interfaces and at the other end to the line transfer switch for interconnecting the interfaces on that panel body. The interfaces and the wiring, in cooperation with a support structure, constitute a wiring module disposed within the panel body. The interface may comprise at least one of interfaces of electric communication, optical communication, and optical sensor.Type: ApplicationFiled: September 25, 2006Publication date: September 27, 2007Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hajime TAKEYA, Tsuyoshi OZAKI, Hirotsugu MORINAGA, Shinji BADONO
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Publication number: 20050163414Abstract: In a method of manufacturing a rib structural system, tape-shaped prepregs, each made of a fiber reinforced composite material into which a resin is impregnated, are laminated to form ribs in the form of a grid, while an optical fiber including Fiber Bragg Grating members at predetermined locations is layered in the ribs. The Fiber Bragg Grating members are arranged at intermediate locations dependent upon their reflection wavelengths, each of the intermediate locations being substantially midway between two adjacent intersections in of two or more ribs.Type: ApplicationFiled: October 8, 2004Publication date: July 28, 2005Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Hajime Takeya, Tsuyoshi Ozaki, Steven Hahn
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Patent number: 6882760Abstract: A polarization dispersion compensation apparatus includes a polarization controller, a polarization beam splitter, an optical delay circuit, and a polarization beam combiner. The polarization controller controls polarization of an optical signal so that the polarization axis of the input optical signal substantially coincides with the optical axis of an optical transmission line, and the polarization beam splitter section splits the optical signal into two polarized components perpendicular to each other. The optical delay circuit section causes a difference in delay between the two polarized components, and the polarization beam combiner section combines the two polarized components output from the optical delay circuit section.Type: GrantFiled: June 29, 2001Date of Patent: April 19, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masakazu Takabayashi, Sadayuki Matsumoto, Takuya Ohira, Kiichi Yoshiara, Junichiro Hoshizaki, Hajime Takeya, Shigeru Matsuno
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Publication number: 20040101227Abstract: A polarization dispersion compensation apparatus of the present invention is provided with a polarization controller 4, a polarization beam splitter section 1, an optical delay circuit section 2 and a polarization beam combiner section 3. The polarization controller 4 controls polarization state of an optical signal so that the polarization axis of the inputted optical signal substantially coincides with the optical axis of an optical transmission line, and the polarization beam splitter section 1 splits, and outputs the optical signals of two polarized components perpendicular to each other from the optical signal outputted from the polarization controller 4. The optical delay circuit section 2 causes a difference in delay between the optical signals of the two polarized components outputted from the polarization beam splitter section 1, and the polarization beam combiner section 3 combines and outputs the optical signals of the two polarized components outputted from the optical delay circuit section 2.Type: ApplicationFiled: February 26, 2003Publication date: May 27, 2004Inventors: Masakazu Takabayashi, Sadayuki Matsumoto, Takuya Ohira, Kiichi Yoshiara, Junichiro Hoshizaki, Hajime Takeya, Shigeru Matsuno
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Patent number: 6690860Abstract: A method of manufacturing a grating in an optical waveguide that includes a core and a cladding covering the core. The method includes scanning a laser beam along an optical axis of the optical waveguide to modulate the refractive index of the core. The core is made of a material having a refractive index that is changeable upon irradiation by radiation. In addition, in scanning the core, the irradiation range of the laser beam is controlled and the core is scanned several times. Therefore, a predetermined distribution of irradiation is obtained in a direction of the optical axis of the grating.Type: GrantFiled: June 27, 2001Date of Patent: February 10, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Sadayuki Matsumoto, Takuya Ohira, Masakazu Takabayashi, Kiichi Yoshiara, Shigeru Matsuno, Hajime Takeya, Junichiro Hoshizaki
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Patent number: 6643430Abstract: A temperature control device for controlling temperature variable devices disposed near a grating of a variable dispersion equalizer including an optical waveguide having the grating. The temperature variable devices control temperatures independently of each other. The temperature control device includes a controller for controlling the temperature variable units, and a storage device which stores temperature control patterns including combinations of control signals for the respective temperature variable units. The controller controls the temperature variable devices with a control signal of at least one of the temperature control patterns selected from the storage device.Type: GrantFiled: June 27, 2001Date of Patent: November 4, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Sadayuki Matsumoto, Takuya Ohira, Masakazu Takabayashi, Kiichi Yoshiara, Shigeru Matsuno, Hajime Takeya, Junichiro Hoshizaki
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Patent number: 6522809Abstract: A waveguide grating device controlling Bragg wavelength after manufacture of the device includes an optical waveguide on a substrate. A variable stress is applied to a waveguide grating in part of the waveguide to bend at least the portion of the substrate including the waveguide grating, changing the Bragg wavelength.Type: GrantFiled: August 17, 2000Date of Patent: February 18, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masakazu Takabayashi, Kiichi Yoshiara, Sadayuki Matsumoto, Junichiro Hoshizaki, Takeyuki Maegawa, Hajime Takeya, Kiyohide Sakai, Minoru Hashimoto, Fusaoki Uchikawa
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Publication number: 20020114570Abstract: This invention provides a temperature control device for controlling a plurality of temperature variable devices disposed near a grating of a variable dispersion equalizer including an optical waveguide having the grating. The temperature variable devices are able to control the temperatures independently of each other. The temperature control device includes a controller for controlling the temperature variable units, and a storage device which stores a plurality of temperature control patterns includes combinations of control signals of the respective temperature variable units. The controller controls the temperature variable devices by a control signal of at least one of the temperature control patterns selected from the storage device.Type: ApplicationFiled: June 27, 2001Publication date: August 22, 2002Inventors: Sadayuki Matsumoto, Takuya Ohira, Masakazu Takabayashi, Kiichi Yoshiara, Shigeru Matsuno, Hajime Takeya, Junichiro Hoshizaki
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Publication number: 20020081068Abstract: A method of manufacturing a grating in an optical waveguide that includes a core and a cladding covering the core. The method includes the steps of providing the optical waveguide and scanning a laser beam along an optical axis of the optical waveguide to form modulation of refractive index of radiation in the core. The core is made of a material having the refractive index that is changeable by irradiation of radiation. In addition, on the step of scanning, in the core, the irradiation range of the laser beam is controlled and the laser beam is scanned a plurality of times. Therefore, predetermined distribution of irradiation amount is obtained in a direction of the optical axis of the grating.Type: ApplicationFiled: June 27, 2001Publication date: June 27, 2002Inventors: Sadayuki Matsumoto, Takuya Ohira, Masakazu Takabayashi, Kiichi Yoshiara, Shigeru Matsuno, Hajime Takeya, Junichiro Hoshizaki