Patents Assigned to National Institute of Information and Communications Technology
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Publication number: 20160291336Abstract: A spatial light modulator is constituted by a plurality of pixels. A rearrangement optical element guides the light generated by the plurality of pixels of the spatial light modulator onto the screen to rearrange a plurality of pixels on a screen. Each lens of a lens array emits the light generated by the plurality of pixels rearranged on the screen as light beams in respective different directions. A control device controls the spatial light modulator such that a three-dimensional image is presented by the plurality of light beams emitted by a plurality of lenses of the lens array.Type: ApplicationFiled: October 6, 2014Publication date: October 6, 2016Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventor: Shunsuke Yoshida
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Patent number: 9461124Abstract: A Ga2O3 semiconductor element, includes: an n-type ?-Ga2O3 substrate; a ?-Ga2O3 single crystal film, which is formed on the n-type ?-Ga2O3 substrate; source electrodes, which are formed on the ?-Ga2O3 single crystal film; a drain electrode, which is formed on the n-type ?-Ga2O3 substrate surface on the reverse side of the ?-Ga2O3 single crystal film; n-type contact regions, which are formed in the ?-Ga2O3 single crystal film, and have the source electrodes connected thereto, respectively; and a gate electrode, which is formed on the ?-Ga2O3 single crystal film with the gate insulating film therebetween.Type: GrantFiled: September 7, 2012Date of Patent: October 4, 2016Assignees: TAMURA CORPORATION, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Kohei Sasaki, Masataka Higashiwaki
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Wireless transmitter, wireless receiver, wireless transmission method, and wireless reception method
Patent number: 9450800Abstract: In order to suppress out-of-band radiation within a range of a spectrum mask regulation without reducing transmission signal power or the like even when a wireless communication is performed in a white space by using OFDM or the like, the present invention is characterized by including an RF circuit characteristic analysis unit, a multipath delay detection unit, a digital filter setting unit, and a transmission power setting unit and further including: a windowing function/windowing duration selection unit configured to select a windowing function and a windowing duration based on the analysis result by the RF circuit characteristic analysis unit, the detection result by the multipath delay detection unit, and the setting by the digital filter setting unit and the transmission power setting unit; a guard interval duration selection unit configured to select a guard interval duration; and a transmission power selection unit configured to select transmission power.Type: GrantFiled: October 31, 2013Date of Patent: September 20, 2016Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Ryuhei Funada, Keiichi Mizutani, Hiroshi Harada -
Patent number: 9442920Abstract: A conventional speech recognition dictionary, translation dictionary and speech synthesis dictionary used in speech translation have inconsistencies.Type: GrantFiled: March 3, 2010Date of Patent: September 13, 2016Assignee: National Institute of Information and Communications TechnologyInventors: Satoshi Nakamura, Eiichiro Sumita, Yutaka Ashikari, Noriyuki Kimura, Chiori Hori
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Publication number: 20160260026Abstract: [Object] An object is to provide a device capable of efficiently collecting contradictory expressions in units smaller than a sentence.Type: ApplicationFiled: October 6, 2014Publication date: September 8, 2016Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Julien KLOETZER, Kentaro TORISAWA, Chikara HASHIMOTO, Motoki SANO, Jonghoon OH, Kiyonori OOTAKE
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Publication number: 20160255340Abstract: On a surface of a screen, a first direction parallel to a virtual plane and a second direction orthogonal to the first direction are defined. A basic diffusion member of the screen diffuses and transmits each light ray at a first angle in a first plane parallel to the first direction, and diffuses and transmits the light ray at a second angle larger than the first angle in a second plane parallel to the second direction. An adjustment diffusion member of the screen diffuses and transmits each light ray at an adjustment angle larger than the first angle in the first plane. The basic diffusion member and the adjustment diffusion member are stacked on each other such that a diffusion angle of each light ray by the screen in the first plane is adjusted to a target angle larger than the adjustment angle.Type: ApplicationFiled: February 26, 2016Publication date: September 1, 2016Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventor: Shunsuke Yoshida
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Publication number: 20160226749Abstract: Efficiency of communication to a root device is improved. A broadcast hello packet including a hierarchical number is received; the hello packets of one or more devices are collected and an own-device-hierarchical-number is set to a value by adding one to the smallest number of the hierarchical numbers; each device having a hierarchical number smaller than the own-device-hierarchical-number by one is retained as a parent device; each device having the same hierarchical number as the own-device-hierarchical-number is retained as a sibling device; each device having a hierarchical number larger than the own-device-hierarchical-number by one or more is retained as a child device; an indication of the retaining as the parent device, as the sibling device, and as the child device are each transmitted so as to reach the parent device, the sibling device, and the child device; and a hello packet including the own-device hierarchical number is broadcast.Type: ApplicationFiled: September 9, 2014Publication date: August 4, 2016Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Verotiana RABARIJAONA, Fumihide KOJIMA, Hiroshi HARADA
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Patent number: 9370595Abstract: [Structure] An olfactory display 10 includes a housing 12 having an emitting port 22, and presents a fragrance within a range bounded in terms of time and space. Within the housing 12, a fragrance chamber 14 having an air inlet 26 and a fragrance outlet 24 which is communicated with the emitting port 22 is formed, and in the fragrance chamber 14, a solid-like fragrance source 20 is accommodated. Furthermore, in the fragrance chamber 14, there is provided with a airflow source 16 comprising a diaphragm 34 having a piezoelectric device 32. In presenting a fragrance, an air is sent into the fragrance chamber 14 from the air inlet 26 by the airflow source 16, and accordingly, the air within the fragrance chamber 14, which including a gas-like fragrance component volatilized from the fragrance source 20 is emitted from the emitting port 22 passing through the fragrance outlet 24.Type: GrantFiled: July 27, 2012Date of Patent: June 21, 2016Assignee: National Institute of Information and Communications TechnologyInventors: Dong Wook Kim, Hiroshi Ando
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Patent number: 9374164Abstract: An optical access system is provided that enables subscriber terminals or termination devices to be interconnected via dedicated lines as needed, with respect to subscriber terminals or termination devices participating in an optical network. The optical network is a network connecting a plurality of accommodating stations, and in this network, the accommodating stations have a plurality of optical line termination devices and optical path selection means, the subscriber side optical terminals or optical line termination devices are connected in single star optical paths, and the optical line termination devices in the accommodating stations are connected with the above mentioned optical terminals or optical line termination devices via the optical path selection means.Type: GrantFiled: December 12, 2011Date of Patent: June 21, 2016Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventor: Toshiaki Kuri
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Patent number: 9370006Abstract: Provided are an information transmission device and method thereof allowing a wireless device intended to newly start an operation in a white space to efficiently perform its preparatory operation, the transmission device including: a first retainer retaining first information including at least a list of channels available in each of first-type partial areas obtained when dividing an area at a first fineness; a second retainer retaining second information including at least a list of channels available in each of second-type partial areas obtained when dividing the area at a second fineness finer than the first fineness; a generator generating multiplexed information including the first and the second information so that the first and the second information are repeated at equal frequencies, or the first information is repeated at a frequency higher than that of the second information in the time axis direction; and a transmitter wirelessly transmitting the multiplexed information.Type: GrantFiled: November 12, 2012Date of Patent: June 14, 2016Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Kentaro Ishizu, Homare Murakami, Hiroshi Harada
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Publication number: 20160155058Abstract: [Object] To provide a question-answering system capable of appropriately answering to a non-factoid question.Type: ApplicationFiled: May 15, 2014Publication date: June 2, 2016Applicant: National Institute of Information and Communications TechnologyInventors: Jonghoon OH, Kentaro TORISAWA, Chikara Hashimoto, Motoki SANO, Stijn DE SAEGER, Kiyonori OOTAKE
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Publication number: 20160140217Abstract: [Object] To provide a system for automatically and reliably collecting information belonging to a given category, and matching the information appropriately in a timely manner. [Solution] A text classifying device 30 analyzes dependency of collected texts by a morpheme analyzing unit 52 and a dependency analyzing unit 54. A problem report collecting unit 64 specifies a core consisting of noun+predicate in a text based on dependency relation of the text, and using a combination of noun classification (trouble/non-trouble) and predicate classification (excitatory/inhibitory), classifies the text to a problem report or the rest, by a method referred to as core-based matrix. Support information collecting device 66 and request message collecting device 68 collect support information and request messages in the similar manner.Type: ApplicationFiled: May 15, 2014Publication date: May 19, 2016Applicant: National Institute of Information and Communications TechnologyInventors: Motoki SANO, Istvan VARGA, Kentaro TORISAWA, Chikara HASHIMOTO, Kiyonori OOTAKE, Takao KAWAI, Jonghoon OH, Stijin DE SAEGER
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Publication number: 20160132491Abstract: In order to solve a conventional problem that a translation model has to be updated each time a translation corpus is added, in a case of calculating a score of each phrase pair acquired from a j-th translation corpus (2?j?N) (added translation corpus), a score of each phrase pair corresponding to the j-th translation corpus is calculated using the one or more pieces of phrase appearance frequency information corresponding to a (j?1)-th translation corpus, the calculated score is used to generate a translation model, and the newly generated translation model is used in a state of being integrated to an original translation model. Accordingly, a translation model can be easily enhanced in a stepwise manner.Type: ApplicationFiled: May 23, 2014Publication date: May 12, 2016Applicant: National Institute of Information and Communications TechnologyInventors: Taro WATANABE, Conghui ZHU, Eiichiro SUMITA
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Patent number: 9282574Abstract: In particular, even if sensors have their respective different timer precisions, the number of occasions when the sensors wait for data can be minimized, thereby reducing the output consumptions on the sensor sides. A coordinator (3) allocates, based on information previously received from sensors (2), the sensors to respective slots, which constitute a super-frame, in a time sequence order and then notifies, to the sensors (2), the respective slots to which the sensors are allocated. When each of the sensors (2) transmits data to the coordinator (3), the sensor makes a synchronization request at the timing of the notified slot without receiving any beacons from the coordinator.Type: GrantFiled: August 23, 2010Date of Patent: March 8, 2016Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventor: Masahiro Kuroda
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Relationship information expansion apparatus, relationship information expansion method, and program
Patent number: 9275043Abstract: A relationship information expansion apparatus capable of acquiring a new relationship based on a relationship information piece including two or more language expressions having a semantic relationship is provided. The relationship information expansion apparatus generates a candidate expanded relationship information piece in which at least one language expression included in the relationship information piece was replaced with a similar language expression, and acquires a score that indicates a probability that the candidate expanded relationship information piece has a semantic relationship. The relationship information expansion apparatus selects an expanded relationship information piece, which is a candidate expanded relationship information piece having a high score among candidate expanded relationship information pieces.Type: GrantFiled: January 5, 2011Date of Patent: March 1, 2016Assignee: National Institute of Information and Communications TechnologyInventors: Masaaki Tsuchida, Stijn De Saeger, Kentaro Torisawa, Masaki Murata, Junichi Kazama, Kow Kuroda -
Patent number: 9250455Abstract: The optical modulator includes optical modulation units. The plurality of optical modulation units is disposed in parallel on the same substrate. One input waveguide branches off to be connected to the Mach-Zehnder type optical waveguide of each optical modulation unit, and an entire optical waveguide is formed such that outputs from the Mach-Zehnder type optical waveguides are combined and output through one output waveguide. A modulation signal with the same intensity is applied to a modulation electrode of each optical modulation unit. In at least some of the optical modulation units, mechanical structures including the modulation electrodes of the optical modulation units are configured such that an amplitude value of an optical output modulated by the modulation signal of the optical modulation unit is ½n (n is a natural number) of a maximum amplitude value in other optical modulation units.Type: GrantFiled: January 30, 2013Date of Patent: February 2, 2016Assignees: SUMITOMO OSAKA CEMENT CO., LTD., NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Youichi Hosokawa, Kaoru Higuma, Tetsuya Kawanishi, Atsushi Kanno
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Patent number: 9253716Abstract: A technique that can effectively utilize unused wireless link and realize high-quality wireless communication between a communication terminal and a base station and enables efficient distribution of radio resources over an entire wireless communication system is provided. A wireless communication system in which a base station and a communication terminal can conduct wireless communication by detecting a usable wireless link and changing a wireless link used for the connection is also provided. On the communication network side, in addition to a plurality of wireless communication networks and a base station, a server device is provided.Type: GrantFiled: December 1, 2009Date of Patent: February 2, 2016Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Kentaro Ishizu, Homare Murakami, Goh Miyamoto, Ha Nguyen Tran, Stanislav Filin, Hiroshi Harada
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Patent number: 9245749Abstract: A method of forming a Ga2O3-based crystal film includes epitaxially growing a Ga2O3-based crystal film on a (001)-oriented principal surface of a Ga2O3-based substrate at a growth temperature of not less than 750° C. A crystal multilayer structure includes a Ga2O3-based substrate with a (001)-oriented principal surface, and a Ga2O3-based crystal film formed on the principal surface of the Ga2O3-based substrate by epitaxial growth. The principal surface has a flatness of not more than 1 nm in an RMS value.Type: GrantFiled: December 23, 2014Date of Patent: January 26, 2016Assignees: TAMURA CORPORATION, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Kohei Sasaki, Masataka Higashiwaki
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Patent number: 9231638Abstract: A high-speed communication control system is provided to resolve the problem of transmission delay, while a communication capacity is ensured. A communication system includes a transmission station 13 and a reception station 15. A communication system 17 includes an optical fiber line 19 and a wireless path 21 that connect the transmission station 13 to the reception station 15 so that information is transmitted and received. The transmission station 13 includes a communication control unit 11 that controls a communication path. The reception station 15 is able to communicate with the transmission station 13. The communication control unit 11 controls whether the information is transmitted to the reception station 15 via one of the optical fiber line 19 and the wireless path 21.Type: GrantFiled: September 24, 2013Date of Patent: January 5, 2016Assignee: National Institute Of Information And Communications TechnologyInventors: Tetsuya Kawanishi, Atsushi Kanno
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WIRELESS TRANSMITTER, WIRELESS RECEIVER, WIRELESS TRANSMISSION METHOD, AND WIRELESS RECEPTION METHOD
Publication number: 20150341201Abstract: In order to suppress out-of-band radiation within a range of a spectrum mask regulation without reducing transmission signal power or the like even when a wireless communication is performed in a white space by using OFDM or the like, the present invention is characterized by including an RF circuit characteristic analysis unit, a multipath delay detection unit, a digital filter setting unit, and a transmission power setting unit and further including: a windowing function/windowing duration selection unit configured to select a windowing function and a windowing duration based on the analysis result by the RF circuit characteristic analysis unit, the detection result by the multipath delay detection unit, and the setting by the digital filter setting unit and the transmission power setting unit; a guard interval duration selection unit configured to select a guard interval duration; and a transmission power selection unit configured to select transmission power.Type: ApplicationFiled: October 31, 2013Publication date: November 26, 2015Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Ryuhei FUNADA, Keiichi MIZUTANI, Hiroshi HARADA