Patents by Inventor Tomoharu Nakamura
Tomoharu Nakamura 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: 20180164488Abstract: There are provided a light emitting unit that enhances the uniformity of in-plane colors, as well as a display and a lighting apparatus that include such a light emitting unit thereon. The light emitting unit includes: a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source; an optical component having a light incident surface in opposition to the plurality of light emitting sections; and a color unevenness prevention structure suppressing direct entering of light from the light source into the optical component.Type: ApplicationFiled: January 25, 2018Publication date: June 14, 2018Applicant: Saturn Licensing LLCInventors: Shingo Ohkawa, Tomoharu Nakamura, Gen Yonezawa
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Patent number: 9998071Abstract: A failure diagnosis system is configured to calculate an estimated irradiation on a first photovoltaic string and an estimated operating temperature of the first photovoltaic string based on a short-circuit current and an open-circuit voltage on a current-voltage characteristic of the first photovoltaic string, and the array output voltage value and the array output current value measured by an array measurement apparatus. The failure diagnosis system is configured to calculate an estimated current value of the first photovoltaic string based on the estimated irradiation, the estimated operating temperature, and the current-voltage characteristic. The failure diagnosis system is configured to diagnose degradation of the first photovoltaic string by comparing the measured current value of the first photovoltaic string and the estimated current value.Type: GrantFiled: September 12, 2014Date of Patent: June 12, 2018Assignee: HITACHI, LTD.Inventors: Toru Kouno, Tetsuharu Ohya, Yuuichi Nagayama, Tomoharu Nakamura, Koki Morikawa, Satoshi Miyazaki
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Patent number: 9915769Abstract: There are provided a light emitting unit that enhances the uniformity of in-plane colors, as well as a display and a lighting apparatus that include such a light emitting unit thereon. The light emitting unit includes: a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source; an optical component having a light incident surface in opposition to the plurality of light emitting sections; and a color unevenness prevention structure suppressing direct entering of light from the light source into the optical component.Type: GrantFiled: July 18, 2016Date of Patent: March 13, 2018Assignee: Saturn Licensing LLCInventors: Shingo Ohkawa, Tomoharu Nakamura, Gen Yonezawa
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Patent number: 9837957Abstract: The diagnostic method for a photovoltaic power system includes: a step of storing measured values of voltage and current outputted by a photovoltaic cell array, and identifying a first time period and a second time period with a lower solar radiation amount than in the first time period; a step of calculating the number of faulty photovoltaic cells on the basis of the measured values in the first time period; a step of calculating the number of faulty photovoltaic cells on the basis of the measured values in the second time period; and a step of comparing the number of faulty photovoltaic cells as calculated for the first time period, and the number of faulty photovoltaic cells as calculated for the second time period, and identifying a series resistance of the photovoltaic cells and a value indicating a degree of loss resulting from a fault in the photovoltaic cells.Type: GrantFiled: April 21, 2016Date of Patent: December 5, 2017Assignee: Hitachi, Ltd.Inventors: Toru Kouno, Atsuhiko Kubo, Yuuichi Nagayama, Tomoharu Nakamura
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Patent number: 9769040Abstract: There is provided a monitoring apparatus including a monitoring unit that monitors an operating situation of nodes over a network based on a predetermined monitoring parameter, a memory that records the operating situation monitored by the monitoring unit, and a changing unit that changes the monitoring parameters based on a past operating situation recorded by the memory.Type: GrantFiled: December 9, 2010Date of Patent: September 19, 2017Assignee: PFU LIMITEDInventors: Naoki Saitou, Toshitaka Kawahigashi, Tomoharu Nakamura
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Publication number: 20170261180Abstract: There are provided a light emitting unit using a wavelength conversion member which may be put to practical use, and a display and a lighting apparatus which include the light emitting unit. The light emitting unit includes: a light source; an optical part including a light incident surface, the light incident surface facing the light source; a wavelength conversion member provided between the light source and the light incident surface; and a holding member holding the wavelength conversion member at a position between the light source and the light incident surface of the optical part.Type: ApplicationFiled: May 25, 2017Publication date: September 14, 2017Applicant: Sony CorporationInventor: Tomoharu Nakamura
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Patent number: 9742189Abstract: The present invention relates to a system for controlling microgrid facilities. In particular, the microgrid control system provided is capable of controlling multiple facilities according to characteristics of the facilities in order to achieve economic efficiency, environmental friendliness, and continued operability. The microgrid control system for controlling the operations of the multiple power facilities is provided with: a power supply activation/suspension planning unit that has a prediction unit for predicting outputs or loads of power supply facilities or load facilities and a prediction unit for predicting prediction errors contained therein; and an economical load allocation unit that determines command values related to the distribution of loads to be borne by currently running power supply facilities.Type: GrantFiled: June 17, 2011Date of Patent: August 22, 2017Assignee: HITACHI, LTD.Inventors: Tohru Watanabe, Juichiro Atsumi, Masahiro Sekoguchi, Masanori Kaminaga, Kosho Aikawa, Hisayuki Magoroku, Tomoharu Nakamura, Yuichi Nagayama, Shigeki Hirasawa
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Patent number: 9711663Abstract: A power generating system comprising: a plurality of power generating units coupled in parallel; a power collecting device for collecting electric power output from the plurality of power generating units; and wirings for coupling the plurality of power generating units and the power collecting device. A ratio of a conductor diameter to a predetermined length of each of the wirings is defined as a reference ratio. A value obtained by multiplying the reference ratio, a number of the wirings, and a loss generated by a specific wiring together is subtracted from a value obtained by multiplying a predetermined number of wirings for adjustment by a ratio of a conductor diameter to a length of the specific wiring. A total of the ratios of the conductor diameters to the lengths of the predetermined number of the wirings for adjustment is determined as a value less than the subtracted value.Type: GrantFiled: September 12, 2014Date of Patent: July 18, 2017Assignee: HITACHI, LTD.Inventors: Toru Kouno, Yuuichi Nagayama, Masaaki Fujimori, Tomoharu Nakamura, Koki Morikawa
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Publication number: 20170170781Abstract: A diagnosis system including: a power collection unit configured to couple a plurality of photovoltaic cell arrays, each including photovoltaic cells, in parallel; a control unit; and a monitoring unit, the monitoring unit being configured to: estimate a solar radiation amount and an operating temperature of the photovoltaic cell arrays based on the current value measured by a first ammeter in the control unit and the voltage value measured by the first voltmeter in the control unit by using an expression expressing a relationship between the solar radiation amount, the operating temperature, and a number of photovoltaic cells, and an output current; correct the estimated values so as to match the current values measured by second ammeters in the power collection unit by using the expression; and calculate a theoretical current value of each of the photovoltaic cell arrays based on the corrected values by using the expression.Type: ApplicationFiled: December 14, 2016Publication date: June 15, 2017Inventors: Toru KOUNO, Hideyuki SHITANISHI, Masahito TOYOSAKI, Tetsuharu OHYA, Kenichi GOKITA, Tomoharu NAKAMURA
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Patent number: 9651631Abstract: In order to provide a calculation method for reproducing solar cell characteristics with high accuracy by using data of a short-circuit current, an open-circuit voltage and the maximum power operation point of a solar cell in a temperature and a solar radiation intensity in a standard state, parameter values for determining characteristics in the standard state are calculated by using data of the short-circuit current, the open-circuit voltage and the maximum power operation point of the solar cell in the temperature and the solar radiation intensity in the standard state. Next, temperature coefficients of the open-circuit voltage and the reverse saturation current are calculated by using the calculated parameters, and a short-circuit current, an open-circuit voltage and the maximum power operation point at a given temperature are calculated.Type: GrantFiled: January 27, 2012Date of Patent: May 16, 2017Assignee: Hitachi, Ltd.Inventors: Tohru Kohno, Akihiro Nakamura, Tomoharu Nakamura
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Patent number: 9506971Abstract: A low-cost failure diagnosis method, without addition of a measuring unit and a communication unit, provided for a solar battery system, of calculating a working temperature and the number of failed solar battery modules in a solar battery array, by calculating a solar radiation amount while updating a predetermined coefficient as a ratio between a short-circuit current and a working current in accordance with state of the solar battery array and using measured data having the working current and working voltage measured with a detection unit.Type: GrantFiled: August 26, 2013Date of Patent: November 29, 2016Assignee: Hitachi, Ltd.Inventors: Tohru Kohno, Akihiro Nakamura, Tomoharu Nakamura, Koki Morikawa
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Publication number: 20160327723Abstract: There are provided a light emitting unit that enhances the uniformity of in-plane colors, as well as a display and a lighting apparatus that include such a light emitting unit thereon. The light emitting unit includes: a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source; an optical component having a light incident surface in opposition to the plurality of light emitting sections; and a color unevenness prevention structure suppressing direct entering of light from the light source into the optical component.Type: ApplicationFiled: July 18, 2016Publication date: November 10, 2016Applicant: Sony CorporationInventors: Shingo Ohkawa, Tomoharu Nakamura, Gen Yonezawa
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Publication number: 20160315584Abstract: The diagnostic method for a photovoltaic power system includes: a step of storing measured values of voltage and current outputted by a photovoltaic cell array, and identifying a first time period and a second time period with a lower solar radiation amount than in the first time period; a step of calculating the number of faulty photovoltaic cells on the basis of the measured values in the first time period; a step of calculating the number of faulty photovoltaic cells on the basis of the measured values in the second time period; and a step of comparing the number of faulty photovoltaic cells as calculated for the first time period, and the number of faulty photovoltaic cells as calculated for the second time period, and identifying a series resistance of the photovoltaic cells and a value indicating a degree of loss resulting from a fault in the photovoltaic cells.Type: ApplicationFiled: April 21, 2016Publication date: October 27, 2016Inventors: Toru KOUNO, Atsuhiko KUBO, Yuuichi NAGAYAMA, Tomoharu NAKAMURA
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Patent number: 9423554Abstract: There are provided a light emitting unit that enhances the uniformity of in-plane colors, as well as a display and a lighting apparatus that include such a light emitting unit thereon. The light emitting unit includes: a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source; an optical component having a light incident surface in opposition to the plurality of light emitting sections; and a color unevenness prevention structure suppressing direct entering of light from the light source into the optical component.Type: GrantFiled: April 3, 2013Date of Patent: August 23, 2016Assignee: Sony CorporationInventors: Shingo Ohkawa, Tomoharu Nakamura, Gen Yonezawa
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Publication number: 20160233830Abstract: Provided is a technology that enables sensing of a solar battery string failure even with a smaller change in output, and that enables identification of a factor causing the failure.Type: ApplicationFiled: February 8, 2016Publication date: August 11, 2016Inventors: Toru KOUNO, Tetsuharu OHYA, Yuuichi NAGAYAMA, Tomoharu NAKAMURA
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Patent number: 9310741Abstract: When a colorimeter is colorimetrically measuring a test pattern, a control unit controls a motor such that the colorimeter and a facing member are closer to each other. A recording material on which the test pattern has been formed is brought into contact with the colorimeter. Even when the colorimeter is not colorimetrically measuring the test pattern, the control unit controls the motor such that the colorimeter and the facing member are closer to each other. The recording material on which the test pattern has been formed is brought into contact with the colorimeter.Type: GrantFiled: January 3, 2014Date of Patent: April 12, 2016Assignee: Canon Kabushiki KaishaInventors: Norio Matsui, Tomoharu Nakamura
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Patent number: 9304161Abstract: In order to provide a system which detects and classifies abnormality in a solar battery even during power generation, an output voltage and an output current of the solar battery during power generation are detected, and a solar battery characteristic equation and a threshold value for detecting an abnormal state are calculated using the detected voltage value and current value and the measurement data of an external environment measurement unit. The kind of abnormal state of the solar battery is classified using the calculation result of the characteristic equation and the threshold value.Type: GrantFiled: January 25, 2012Date of Patent: April 5, 2016Assignee: Hitachi, Ltd.Inventors: Akihiro Nakamura, Tohru Kohno, Tomoharu Nakamura
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Patent number: 9275200Abstract: An information processing apparatus includes a storage for storing a plurality types of software licenses in association with a number of possessed licenses, a product type of a software product, and a device specification condition, a receiver for receiving information of a software product operating in a management target device and information of a device specification of the management target device, a determining module for determining a software license to be assigned to the management target device based on the number of possessed licenses, a number of the product types, or the device specification condition, when there is a plurality of software licenses, in which the software product is included in the product type and the device specification meets the device specification condition, among the plurality types of software licenses, and an assigning module for assigning a software license determined by the determining module to the management target device.Type: GrantFiled: September 3, 2014Date of Patent: March 1, 2016Assignee: PFU LimitedInventors: Tomoharu Nakamura, Masaki Matsuda, Koji Hirohashi
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Patent number: 9239418Abstract: A light emitting device includes: a light source; an optical component including a light incident surface, the light incident surface facing the light source; and a wavelength conversion member provided between the light source and the light incident surface, the wavelength conversion member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the light incident surface and light paths of light that is emitted from the light source and enters edges of the light incident surface.Type: GrantFiled: July 13, 2015Date of Patent: January 19, 2016Assignee: Sony CorporationInventors: Tomoharu Nakamura, Kazue Shimizu, Gen Yonezawa, Shingo Ohkawa
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Patent number: 9201372Abstract: By providing a step in a pressing member for pressing a recording material P to a reading surface of an image-pickup unit, surface images in a tight contact area and a non-tight-contact area are picked up. By identifying the type of the recording material P based on the two surface images, the accuracy of identifying the recording material is improved without using a plurality of sensors.Type: GrantFiled: September 10, 2014Date of Patent: December 1, 2015Assignee: Canon Kabushiki KaishaInventors: Tsutomu Ishida, Shoichi Koyama, Tomoharu Nakamura, Shun-ichi Ebihara, Norio Matsui