Patents by Inventor Katsutoshi Nakagawa
Katsutoshi Nakagawa 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: 20230273586Abstract: A controller according to an embodiment, to which an input/output device is connected, includes hardware processors. Each of the hardware processors divides data requested to be output into a size being less than or equal to an access division size threshold by making reference to a division table to update the access request data. The dividing of the data is performed in a case when a size of the data requested to be output is greater than the access division size threshold corresponding to an access waiting time in a current state. The division table indicates a correspondence relationship between an access waiting time and an access division size threshold. The access waiting time is a waiting time to access the input/output device. The access division size threshold is a threshold of a data size for determining whether to divide data requested to be output.Type: ApplicationFiled: June 8, 2021Publication date: August 31, 2023Applicant: TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATIONInventors: Katsutoshi NAKAGAWA, Yuta YAMADA
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Patent number: 11489880Abstract: A controller includes a real-time communication unit, an application communication unit, and a socket management unit. The real-time communication unit communicates with an external node by using a first socket on a basis of a transmission right map indicating a node possessing a transmission right out of multiple nodes. The application communication unit communicates, not on a basis of the transmission right map, with the external node by using a second socket differing from the first socket. The socket management unit restricts at least one of transmission of information by the application communication unit to the external node and reception of information by the application communication unit from the external node.Type: GrantFiled: March 16, 2020Date of Patent: November 1, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATIONInventor: Katsutoshi Nakagawa
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Publication number: 20220182422Abstract: A controller includes a real-time communication unit, an application communication unit, and a socket management unit. The real-time communication unit communicates with an external node by using a first socket on a basis of a transmission right map indicating a node possessing a transmission right out of multiple nodes. The application communication unit communicates, not on a basis of the transmission right map, with the external node by using a second socket differing from the first socket. The socket management unit restricts at least one of transmission of information by the application communication unit to the external node and reception of information by the application communication unit from the external node.Type: ApplicationFiled: March 16, 2020Publication date: June 9, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATIONInventor: Katsutoshi NAKAGAWA
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Patent number: 10886434Abstract: A white LED lamp including: a conductive portion; a light emitting diode chip mounted on the conductive portion, for emitting a primary light having a peak wavelength of 360 nm to 420 nm; a transparent resin layer including a first hardened transparent resin, for sealing the light emitting diode chip; and a phosphor layer covering the transparent resin layer, the phosphor layer being formed by dispersing a phosphor powder into a second hardened transparent resin, and the phosphor powder receiving the primary light and radiating a secondary light having a wavelength longer than that of the primary light. An energy of the primary light contained in the radiated secondary light is 0.4 mW/lm or less.Type: GrantFiled: November 6, 2014Date of Patent: January 5, 2021Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.Inventors: Tsutomu Ishii, Hajime Takeuchi, Yasumasa Ooya, Katsutoshi Nakagawa, Yumi Kanno, Masaki Toyoshima, Yasuhiro Shirakawa, Ryo Sakai
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Patent number: 10025750Abstract: According to an embodiment, a transmission device is connected to a controller via a system bus. The transmission device includes a first transmission control module and a control module. The first transmission control module controls transmission via the system bus. The control module does not perform but withholds an operation involving a use of shared system resources including the system bus and performs the withheld operation when notified of an availability of the shared system resources from the controller.Type: GrantFiled: March 30, 2015Date of Patent: July 17, 2018Assignee: Kabushiki Kaisha ToshibaInventor: Katsutoshi Nakagawa
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Patent number: 9660149Abstract: An LED light emitting device is provided that has high color rendering properties and is excellent color uniformity and, at the same time, can realize even luminescence unattainable by conventional techniques. A phosphor having a composition represented by formula: (Sr2-X-Y-Z-?BaXMgYMnZEu?)SiO4 wherein x, y, z, and ? are respectively coefficients satisfying 0.1<x<1, 0<y<0.5, 0<z<0.1, y>z, and 0.01<?<0.2 is provided. The phosphor is used in combination with ultraviolet and blue light emitting diodes having a luminescence peak wavelength of 360 to 470 nm to form an LED light emitting device.Type: GrantFiled: October 23, 2015Date of Patent: May 23, 2017Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Tsutomu Ishii, Yoshitaka Funayama, Yumi Ito, Yasumasa Ooya, Ryo Sakai, Katsutoshi Nakagawa, Hajime Takeuchi, Yasuhiro Shirakawa
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Publication number: 20170124017Abstract: According to an embodiment, a transmission device is connected to a controller via a system bus. The transmission device includes a first transmission control module and a control module. The first transmission control module controls transmission via the system bus. The control module does not perform but withholds an operation involving a use of shared system resources including the system bus and performs the withheld operation when notified of an availability of the shared system resources from the controller.Type: ApplicationFiled: March 30, 2015Publication date: May 4, 2017Inventor: Katsutoshi NAKAGAWA
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Publication number: 20160049558Abstract: An LED light emitting device is provided that has high color rendering properties and is excellent color uniformity and, at the same time, can realize even luminescence unattainable by conventional techniques. A phosphor having a composition represented by formula: (Sr2-X-Y-Z-?BaXMgYMnZEu?)SiO4 wherein x, y, z, and ? are respectively coefficients satisfying 0.1<x<1, 0<y<0.5, 0<z<0.1, y>z, and 0.01<?<0.2 is provided. The phosphor is used in combination with ultraviolet and blue light emitting diodes having a luminescence peak wavelength of 360 to 470 nm to form an LED light emitting device.Type: ApplicationFiled: October 23, 2015Publication date: February 18, 2016Inventors: Tsutomu Ishii, Yoshitaka Funayama, Yumi Ito, Yasumasa Ooya, Ryo Sakai, Katsutoshi Nakagawa, Hajime Takeuchi, Yasuhiro Shirakawa
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Patent number: 9228718Abstract: In one embodiment, an LED light bulb includes an LED module, a base part on which the LED module is disposed, and a globe attached to the base part. The LED module includes an ultraviolet to violet light-emitting LED chip mounted on a surface of a substrate. The globe has a shape in which a cross section in a direction in parallel to the surface of the substrate is circular. A phosphor screen emitting white light by absorbing the ultraviolet to violet light emitted from the LED chip is provided on an inner surface of the globe. The globe has a shape in which a diameter D1 at an attaching part to the base part is smaller than a diameter D2 at a maximum portion of the cross section.Type: GrantFiled: March 12, 2013Date of Patent: January 5, 2016Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.Inventors: Yasumasa Ooya, Masahiko Yamakawa, Yasuhiro Shirakawa, Katsutoshi Nakagawa
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Patent number: 9169436Abstract: An LED light emitting device is provided that has high color rendering properties and is excellent color uniformity and, at the same time, can realize even luminescence unattainable by conventional techniques. A phosphor having a composition represented by formula: (Sr2-X-Y-Z-?BaXMgYMnZEu?)SiO4 wherein x, y, z, and ? are respectively coefficients satisfying 0.1<x<1, 0<y<0.5, 0<z<0.1, y>z, and 0.01<?<0.2 is provided. The phosphor is used in combination with ultraviolet and blue light emitting diodes having a luminescence peak wavelength of 360 to 470 nm to form an LED light emitting device.Type: GrantFiled: May 14, 2012Date of Patent: October 27, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Tsutomu Ishii, Yoshitaka Funayama, Yumi Ito, Yasumasa Ooya, Ryo Sakai, Katsutoshi Nakagawa, Hajime Takeuchi, Yasuhiro Shirakawa
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Patent number: 9039218Abstract: A white LED lamp including: a conductive portion; a light emitting diode chip mounted on the conductive portion, for emitting a primary light having a peak wavelength of 360 nm to 420 nm; a transparent resin layer including a first hardened transparent resin, for sealing the light emitting diode chip; and a phosphor layer covering the transparent resin layer, the phosphor layer being formed by dispersing a phosphor powder into a second hardened transparent resin, and the phosphor powder receiving the primary light and radiating a secondary light having a wavelength longer than that of the primary light. An energy of the primary light contained in the radiated secondary light is 0.4 mW/Im or less.Type: GrantFiled: September 14, 2012Date of Patent: May 26, 2015Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.Inventors: Tsutomu Ishii, Hajime Takeuchi, Yasumasa Ooya, Katsutoshi Nakagawa, Yumi Ito, Masaki Toyoshima, Yasuhiro Shirakawa, Ryo Sakai
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Publication number: 20150060926Abstract: A white LED lamp including: a conductive portion; a light emitting diode chip mounted on the conductive portion, for emitting a primary light having a peak wavelength of 360 nm to 420 nm; a transparent resin layer including a first hardened transparent resin, for sealing the light emitting diode chip; and a phosphor layer covering the transparent resin layer, the phosphor layer being formed by dispersing a phosphor powder into a second hardened transparent resin, and the phosphor powder receiving the primary light and radiating a secondary light having a wavelength longer than that of the primary light. An energy of the primary light contained in the radiated secondary light is 0.4 mW/lm or less.Type: ApplicationFiled: November 6, 2014Publication date: March 5, 2015Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.Inventors: Tsutomu Ishii, Hajime Takeuchi, Yasumasa Ooya, Katsutoshi Nakagawa, Yumi Ito, Masaki Toyoshima, Yasuhiro Shirakawa, Ryo Sakai
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Patent number: 8955996Abstract: In one embodiment, an LED light bulb includes an LED module, a base portion on which the LED module is disposed, and a globe attached to the base portion. The LED module includes an ultraviolet to violet light-emitting LED chip mounted on a substrate. A lighting circuit and a bayonet cap are provided in and on the base portion. A fluorescent film is provided on an inner surface of the globe, and emits white light by absorbing ultraviolet to violet light emitted from the LED chip. The fluorescent film has a film thickness in a range of 80 to 800 ?m. In the LED light bulb, an amount of ultraviolet light which leaks from the globe is 0.1 mW/nm/lm or less.Type: GrantFiled: December 11, 2012Date of Patent: February 17, 2015Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Yasumasa Ooya, Masahiko Yamakawa, Yasuhiro Shirakawa, Katsutoshi Nakagawa
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Patent number: 8933475Abstract: A light emitting device 1 according to an embodiment includes a planar alumina substrate, a semiconductor light-emitting element mounted on the alumina substrate, and a phosphor layer. The phosphor layer includes a silicone resin layer provided to cover an upper surface and a side surface of the semiconductor light-emitting element and a phosphor emitting visible light by being excited with light emitted from the semiconductor light-emitting element. The phosphor is dispersed in the silicone resin layer. The alumina substrate has a water absorption rate of 5% or more and 60% or less, and an adhesion strength between the alumina substrate and the silicone resin layer is 1 N or more.Type: GrantFiled: September 11, 2012Date of Patent: January 13, 2015Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Katsutoshi Nakagawa, Yasumasa Ooya, Yoshitaka Funayama, Daichi Usui
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Patent number: 8796915Abstract: In one embodiment, an LED light bulb includes an LED module, a base part on which the LED module is disposed, and a globe attached to the base part. The LED module includes an ultraviolet to violet light-emitting LED chip mounted on a substrate. A lighting circuit and a bayonet cap are provided at the base part. A phosphor screen emitting white light by absorbing the ultraviolet to violet light emitted from the LED chip is provided on an inner surface of the globe. The phosphor screen has a color in which a* is ?10 or more and +10 or less, b* is 0 (zero) or more and +30 or less, and L* is +40 or more when a body color thereof is represented by an L*a*b* color system.Type: GrantFiled: February 22, 2013Date of Patent: August 5, 2014Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Yasumasa Ooya, Masahiko Yamakawa, Yasuhiro Shirakawa, Katsutoshi Nakagawa
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Patent number: 8723412Abstract: According to the embodiment, a white lighting device includes a semiconductor light-emitting element emitting near-ultraviolet light, and a phosphor layer containing at least a blue-green phosphor emitting blue-green light and a red phosphor emitting red light and emits white light having a correlated color temperature of 5000 K or less and a deviation duv from a blackbody locus of not less than ?0.01 nor more than 0.01, in which a ratio of a content of the red phosphor to a content of the blue-green phosphor in the phosphor layer by mass is not less than 35 nor more than 50.Type: GrantFiled: September 11, 2012Date of Patent: May 13, 2014Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Katsutoshi Nakagawa, Yumi Ito, Masahiko Yamakawa
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Publication number: 20130240915Abstract: A light emitting device 1 according to an embodiment includes a planar alumina substrate, a semiconductor light-emitting element mounted on the alumina substrate, and a phosphor layer. The phosphor layer includes a silicone resin layer provided to cover an upper surface and a side surface of the semiconductor light-emitting element and a phosphor emitting visible light by being excited with light emitted from the semiconductor light-emitting element. The phosphor is dispersed in the silicone resin layer. The alumina substrate has a water absorption rate of 5% or more and 60% or less, and an adhesion strength between the alumina substrate and the silicone resin layer is 1 N or more.Type: ApplicationFiled: September 11, 2012Publication date: September 19, 2013Applicants: TOSHIBA MATERIALS CO., LTD., KABUSHIKI KAISHA TOSHIBAInventors: Katsutoshi Nakagawa, Yasumasa Ooya, Yoshitaka Funayama, Daichi Usui
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Publication number: 20130241394Abstract: According to the embodiment, a white lighting device includes a semiconductor light-emitting element emitting near-ultraviolet light, and a phosphor layer containing at least a blue-green phosphor emitting blue-green light and a red phosphor emitting red light and emits white light having a correlated color temperature of 5000 K or less and a deviation duv from a blackbody locus of not less than ?0.01 nor more than 0.01, in which a ratio of a content of the red phosphor to a content of the blue-green phosphor in the phosphor layer by mass is not less than 35 nor more than 50.Type: ApplicationFiled: September 11, 2012Publication date: September 19, 2013Applicants: Toshiba Materials Co., Ltd., Kabushiki Kaisha ToshibaInventors: Katsutoshi Nakagawa, Yumi Ito, Masahiko Yamakawa
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Patent number: 8487330Abstract: An LED light emitting device is provided that has high color rendering properties and is excellent color uniformity and, at the same time, can realize even luminescence unattainable by conventional techniques. A phosphor having a composition represented by formula: (Sr2-X-Y-Z-?BaXMgYMnZEu?)SiO4 wherein x, y, z, and ? are respectively coefficients satisfying 0.1<x<1, 0<y<0.5, 0<z<0.1, y>z, and 0.01<?<0.2 is provided. The phosphor is used in combination with ultraviolet and blue light emitting diodes having a luminescence peak wavelength of 360 to 470 nm to form an LED light emitting device.Type: GrantFiled: December 4, 2008Date of Patent: July 16, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Tsutomu Ishii, Yoshitaka Funayama, Yumi Ito, Yasumasa Ooya, Ryo Sakai, Katsutoshi Nakagawa, Hajime Takeuchi, Yasuhiro Shirakawa
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Patent number: 8471283Abstract: A white LED lamp including: a conductive portion; a light emitting diode chip mounted on the conductive portion, for emitting a primary light having a peak wavelength of 360 nm to 420 nm; a transparent resin layer including a first hardened transparent resin, for sealing the light emitting diode chip; and a phosphor layer covering the transparent resin layer, the phosphor layer being formed by dispersing a phosphor powder into a second hardened transparent resin, and the phosphor powder receiving the primary light and radiating a secondary light having a wavelength longer than that of the primary light. An energy of the primary light contained in the radiated secondary light is 0.4 mW/lm or less. In the white LED lamp, a backlight, and an illumination device using the white LED lamp an amount of UV light to be contained in the released light and an amount of heat to be generated from the lamp are decreased to be small.Type: GrantFiled: February 19, 2009Date of Patent: June 25, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Tsutomu Ishii, Hajime Takeuchi, Yasumasa Ooya, Katsutoshi Nakagawa, Yumi Ito, Masaki Toyoshima, Yasuhiro Shirakawa, Ryo Sakai