Patents Assigned to Nippon Telegraph & Telephone Corporation
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Patent number: 11436394Abstract: A Potts model computing device capable of computing a Potts problem that is a multivalued spin problem are described herein. The Potts model computing device includes: an Ising model computing device; a computation result storage and determination unit configured to store a value of a spin of the Ising model obtained in a case where a coupling coefficient is set in the Ising model computing device and to determine whether a computation is finished; and a coupling coefficient overwriting unit configured to update a coupling coefficient generated based on the stored value of the spin to the Ising model computing device. According to a value of a set of spins obtained as a computation result corresponding to a coupling coefficient set for an m-th time in the Ising model computing device, the coupling coefficient overwriting unit generates again a coupling coefficient to be set for an (m+1)-th iterative computation.Type: GrantFiled: October 19, 2018Date of Patent: September 6, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kensuke Inaba, Hiroki Takesue, Toshimori Honjo, Takahiro Inagaki
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Patent number: 11436381Abstract: An information processing apparatus includes a normal user interface (NUI) functional unit, a secure user interface (SUI) functional unit having a protection level higher than that of the NUI functional unit, and an input/output unit that receives an input of information and displays and outputs the information. The NUI functional unit causes the input/output unit to display a NUI screen which receives an input of a query and transmits, as a query, the query input via the NUI screen to the SUI functional unit. The SUI functional unit produces a summary corresponding to the query on the basis of certification data including a query and a summary corresponding to the query and causes the input/output unit to display a SUI screen having the query and the summary.Type: GrantFiled: July 29, 2019Date of Patent: September 6, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takeshi Nagayoshi, Kenichiro Muto, Ryota Sato
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Patent number: 11438083Abstract: A signal generating device includes a digital signal processing unit, M sub DACs of which an analog bandwidth is fB, M being an integer equal to or greater than 2, a broadband analog signal generating unit configured to generate a broadband analog signal that includes a component of a frequency of (M-1)fB or more by using M analog signals output from the M sub DACs. The digital signal processing unit includes components for generating M original divided signals that correspond to signals obtained by dividing a desired output signal into M portions on a frequency axis and down-converting the portions to the baseband, components for generating M folded divided signals by folding back the M original divided signals on the frequency axis, and a 2M×M filter that takes the original divided signals and the folded divided signals as inputs and outputs M composite signals to be transmitted to the M sub DACs. The 2M×M filter can set a response function independently for each of 2M2 combinations of input and output.Type: GrantFiled: June 24, 2019Date of Patent: September 6, 2022Assignee: Nippon Telegraph and Telephone CorporationInventors: Hiroshi Yamazaki, Munehiko Nagatani, Hideyuki Nosaka, Masanori Nakamura, Yutaka Miyamoto
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Patent number: 11438009Abstract: Provided is an encoding/decoding technique according to which it is possible to perform encoding with a small average bit count, even for a series of integer values with a distribution that is significantly biased to a small value, including small values that are not zero values. The present invention includes an integer encoding unit that, for an input series of non-negative values xn, n?{1, 2, . . . , N} (hereinafter referred to as “integer series”), obtains a one-bit code with a bit value of “x” as a code corresponding to L consecutive integer values 0 included in the integer series, L being an integer that is 2 or more, and obtains a K×xn-bit or a K×xn+1-bit code that includes at least one bit value “x” and at least one bit value “y” in the first bit to the K-th bit and in which the bit values of the K×(xn?1) bits from the end are “y”, as a code corresponding to a set composed of 0 to L?1 consecutive integer values 0 included in the integer series and one integer value xn other than 0.Type: GrantFiled: October 25, 2019Date of Patent: September 6, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Ryosuke Sugiura, Takehiro Moriya, Yutaka Kamamoto
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Patent number: 11436740Abstract: An abnormality determination device includes: an analysis unit that analyzes at least a feature amount related to a pattern of a captured image of a manhole cover, the feature amount being included in coded information obtained by coding the captured image; and a determination unit that determines based on an analysis result of the analysis unit whether the manhole cover is abnormal.Type: GrantFiled: February 19, 2019Date of Patent: September 6, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Motohiro Takagi, Kazuya Hayase, Tokinobu Mitasaki, Atsushi Shimizu
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Patent number: 11438071Abstract: An optical repeater in a mode-division-multiplexing (MDM) optical transmission system prevents a signal-to-noise ratio (SNR) from deteriorating due to a loss of a mode demultiplexer. The optical repeater in the MDM optical transmission system is configured to include at least one multimode optical amplifier, a mode demultiplexer, a mode multiplexer, and variable optical attenuators. One of the multimode optical amplifiers is disposed on the input side of the mode demultiplexer.Type: GrantFiled: December 3, 2019Date of Patent: September 6, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hirotaka Ono, Koki Shibahara, Takayuki Mizuno, Yutaka Miyamoto
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Patent number: 11438890Abstract: A wireless communication method is executed by a wireless communication system including one or more wireless terminals and a wireless communication apparatus. The wireless communication apparatus generates wireless scheme schedule information, which is information related to a schedule of a slot allocated to an uplink signal and a downlink signal of a predetermined wireless scheme, generates a downlink signal to be transmitted in the slot to the wireless terminal based on the wireless scheme schedule information, and transmits a beacon signal including the wireless scheme schedule information in the slot. The wireless terminal receives the beacon signal, in the slot, acquires the wireless scheme schedule information from the beacon signal, and generates an uplink signal to be transmitted in the slot to the wireless communication apparatus, based on the wireless scheme schedule information.Type: GrantFiled: April 8, 2019Date of Patent: September 6, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yohei Katayama, Atsushi Taniguchi, Kenji Shimizu, Takahiro Yamazaki, Maiko Naya
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Patent number: 11435822Abstract: An estimation method includes first acquiring information of an eyeball motion of a user on the basis of a measurement value of an eye potential of the user, second acquiring positional information of an interaction target on a screen that corresponds to an interaction performed on a device through an operation of the user, third acquiring information regarding a relative motion of sight of the user on the basis at least of the information of the eyeball motion of the user, and estimating a sight position of the user on the screen on the basis of the information regarding the relative motion of the sight of the user and the positional information of the interaction target on the screen, by processing circuitry.Type: GrantFiled: May 9, 2019Date of Patent: September 6, 2022Assignee: Nippon Telegraph and Telephone CorporationInventors: Jumpei Yamashita, Hidetaka Koya, Hajime Nakajima
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Publication number: 20220278765Abstract: A transfer device includes: a frame information acquisition unit configured to monitor downstream frames between host devices and OLTs and calculate a statistical value of the downstream frames per a fixed cycle; a frame storage unit configured to store the downstream frames in a plurality of queues; a frame sorting unit configured to input the downstream frames to the queues; and a distribution control unit configured to determine the number of frames to be sequentially input to the queues and increase the number of distributed frames of at least one of the host devices input to an OLT, the OLT having a smaller value of a total number of frames input from all the host devices than a maximum number of rounded frames obtained by dividing a value of a total number of frames input until the frames of all the host devices take turns around the plurality of queues by the number of OLTs.Type: ApplicationFiled: June 25, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Rintaro HARADA, Hiroyuki UZAWA, Hirotaka NAKAMURA, Jun TERADA
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Publication number: 20220276123Abstract: The purpose of the present disclosure is to provide a mode field diameter test method and test device that enable acquisition of a mode field diameter for an arbitrary higher-order mode. The present disclosure is a mode field diameter test method including: a test light incidence procedure for selectively causing test light to be incident in a mode subject to measurement, on one end of an optical fiber 10 under test; a far-field pattern measurement procedure for measuring a far-field pattern of the mode subject to measurement, with respect to a divergence angle ? at the other end of the optical fiber under test, by a far-field scanning technique; and a mode field diameter calculation procedure for calculating, using an equation, a mode field diameter from information about incident mode orders in the test light incidence procedure and the far-field pattern measured in the far-field pattern measurement procedure.Type: ApplicationFiled: September 10, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Atsushi NAKAMURA, Daisuke IIDA, Hiroyuki OSHIDA
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Publication number: 20220277235Abstract: An optimization device includes a model construction unit that constructs a model for representing a relationship among groups and for obtaining a prediction represented as a time series based on a set of groups of occurrence time points of reference events as events occurring before interventions and intervention timings as time points to cause the interventions and a set of evaluation values of the groups, a parameter determination unit that acquires one or more occurrence time points of the reference events and determines the next group including a next intervention timing based on the acquired occurrence time points of the reference events, the constructed model, and an acquisition function for obtaining the next intervention timing, an evaluation unit that performs the intervention at the next intervention timing in the determined next group and calculates the evaluation value of the group obtained as the next group, and an assessment unit that causes construction of the model, determination of the groupType: ApplicationFiled: July 29, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hidetaka ITO, Tatsushi MATSUBAYASHI, Takeshi KURASHIMA, Hiroyuki TODA, Masami TAKAHASHI, Masahiro KOJIMA
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Publication number: 20220277490Abstract: Performing, by a computer, an identification procedure for identifying a partial region in a thermal image corresponding to a visible light image in accordance with a threshold for a temperature; and a processing procedure for processing the region of the visible light image identified in the identification procedure prevents privacy leakage from an image captured by a camera.Type: ApplicationFiled: August 21, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasue KISHINO, Yoshinari SHIRAI, Takayuki SUYAMA, Shin MIZUTANI
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Publication number: 20220278829Abstract: A share generating device obtains N seeds s0, . . . , sN?1, obtains a function value y=g(x, e) ? Fm of plaintext x ? Fm and a function value e, and obtains information containing a member yi and N?1 seeds sd, where d ? {0, . . . , N?1} and d?i, as a share SSi of the plaintext x in secret sharing and outputs the share SSi. It is to be noted that the function value y is expressed by members y0 ? Fm(0), . . . , yN?1 ? Fm(N?1) which satisfy m=m(0)+ . . . +m(N?1).Type: ApplicationFiled: May 12, 2022Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Dai IKARASHI, Ryo Kikuchi, Koji Chida
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Publication number: 20220277625Abstract: There is provided a technique for presenting a force sense corresponding to a motion of a physical object without a power source. A force sense presentation apparatus includes a passive object, which is an object without a power source, a motion detection unit that generates data concerning a motion of the passive object (hereinafter referred to as first motion data), a force-sense presentation unit that determines, from the first motion data, data concerning a force sense corresponding to the motion of the passive object (hereinafter referred to as force sense data) and gives the force sense to a user based on the force sense data, and a wire for body motion for transmitting a body motion of the user to the passive object.Type: ApplicationFiled: July 8, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hiroshi CHIGIRA, Hiroaki GOMI
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Publication number: 20220278739Abstract: Using an array antenna in which a spacing between adjacent antenna elements is constant, each of combinations of two antenna elements in positions symmetrical relative to a center of an array is connected by wire connections in two paths, and a path length between the antenna elements in the combination of two antenna elements is the same in all of the combinations: a phase adjustment amount is calculated for each wire connection aside from a reference wire connection on the basis of an arrival direction of a wireless signal received by one antenna element in the combination of two antenna elements and a re-radiation direction of a wireless signal transmitted as a re-radiated wave by the other antenna element corresponding to the one antenna element, taking into account a phase difference between a signal transmitted by the wire connections connected to the one antenna element and a signal transmitted by the reference wire connection; and phase rotation is applied to the signal transmitted by the wire connectType: ApplicationFiled: August 1, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kota ITO, Yushi SHIRATO, Naoki KITA, Takeshi ONIZAWA
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Publication number: 20220279002Abstract: A generation apparatus includes processing circuitry configured to aggregate a plurality of traffic data for every predetermined target, sample target traffic data in which a number of traffic data aggregated exceeds a threshold, and generate a feature vector representing a feature of aggregated traffic data for a target that is not sampled, and generate a feature vector representing a feature of sampled traffic data for the target sampled.Type: ApplicationFiled: July 17, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Bo HU, Kazunori KAMIYA
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Publication number: 20220277592Abstract: An object is to accurately recognize an action of a subject. A direction alignment unit 24 is configured to perform at least one of rotation and inversion on an image based on an action direction of a desired subject in the image, so as to obtain an adjusted image. An action recognition device 26 is configured to recognize an action of the desired subject using the adjusted image as an input.Type: ApplicationFiled: July 10, 2020Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takashi HOSONO, Yongqing SUN, Jun SHIMAMURA, Atsushi SAGATA, Kiyohito SAWADA
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Publication number: 20220277226Abstract: An estimation apparatus includes an estimation unit configured to estimate an acceptability tensor corresponding to an activity tensor representing an activity log without a corresponding acceptability log, by using a result of previously performed learning of a relationship between an activity tensor representing an activity log recording activities of a user, and an acceptability tensor representing an acceptability log recording an acceptability for a time change of the activities of the user.Type: ApplicationFiled: August 13, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Masahiro KOJIMA, Masami TAKAHASHI, Takeshi KURASHIMA, Tatsushi MATSUBAYASHI, Hiroyuki TODA
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Publication number: 20220277202Abstract: The movement of an agent can be simulated with high accuracy using the attributes of the agent. A population density for each of mobile agents is calculated based on an area of a section from its position to a set front length and a size magnification of the other agent existing in the section. A moving speed of the mobile agent for each of the mobile agents is calculated based on a free walking speed of agent information, a calculated population density, and a predetermined parameter.Type: ApplicationFiled: August 27, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Masamichi HOSODA, Maiko NAYA, Akira NAKAYAMA, Masaru MIYAMOTO
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Publication number: 20220277761Abstract: An impression estimation technique without the need of voice recognition is provided. An impression estimation device includes an estimation unit configured to estimate an impression of a voice signal s by defining p1<p2 and using a first feature amount obtained based on a first analysis time length p1 for the voice signal s and a second feature amount obtained based on a second analysis time length p2 for the voice signal s. A learning device includes a learning unit configured to learn an estimation model which estimates the impression of the voice signal by defining p1<p2 and using a first feature amount for learning obtained based on the first analysis time length p1 for a voice signal for learning sL, a second feature amount for learning obtained based on the second analysis time length p2 for the voice signal for learning sL, and an impression label imparted to the voice signal for learning sL.Type: ApplicationFiled: July 29, 2019Publication date: September 1, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hosana KAMIYAMA, Atsushi ANDO, Satoshi KOBASHIKAWA