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公开(公告)号：US12058246B2
公开(公告)日：2024-08-06
申请号：US17791648
申请日：2021-01-22
发明人： Hiroyuki Endo , Masahide Sasaki
IPC分类号： H04L9/08
CPC分类号： H04L9/085 , H04L9/0869
摘要： A secret key sharing system includes a transceiver in a first layer, a plurality of transceivers in a second layer, and a plurality of transceivers in a third layer. The transceivers in the second layer receive a first random number from the transceiver in the first layer via a directional carrier wave. The transceivers in the third layer receive a second random number from one of the transceivers in the second layer via the carrier wave. The transceiver in the first layer and the transceivers in the second layer share a first secret key based on the first random number, and the one of the transceivers in the second layer and the plurality of transceivers in the third layer share a second secret key based on the second random number.
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公开(公告)号：US12057102B2
公开(公告)日：2024-08-06
申请号：US17593822
申请日：2020-03-12
发明人： Peng Shen , Komei Sugiura , Hisashi Kawai
CPC分类号： G10L15/005 , G06N3/08 , G10L15/02 , G10L15/16 , G10L15/22
摘要： A language identifying device includes: a neural network responsive to an input of a speech signal, for outputting a score for each of a plurality of languages indicating that the speech represented by the speech signal is the speech of the corresponding language; a selecting device for selecting, among the scores output by the neural network, scores of a smaller number of languages; a normalizing device for normalizing the scores selected by the selecting device; a determining device for determining whether the maximum of the normalized scores normalized by the normalizing device is equal to or higher than a threshold; and a language deciding device, responsive to a positive determination by the determining device, for selectively performing a process of deciding the language corresponding to the maximum of the scores as the language of the speech represented by the speech signal, or a process of discarding outputs of the score selecting device.
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公开(公告)号：US12050271B2
公开(公告)日：2024-07-30
申请号：US17278306
申请日：2019-06-03
IPC分类号： G01S17/89 , G01S7/48 , G01S17/894 , G02F1/295 , G01S7/481
CPC分类号： G01S17/894 , G01S7/4808 , G02F1/295 , G01S7/4818
摘要： [Problem] To provide a camera with high sensitivity even if an output to the outside is weak. [Solution] This camera includes a light source 3, a demultiplexing unit 5 which demultiplexes light from the light source 3 into first demultiplexed light and second demultiplexed light, a first modulator 7 which modulates the first demultiplexed light to obtain a modulated signal, an emission unit 9 which emits the modulation signal modulated by the first modulator 7, and a phase imparting means 11 which imparts a plurality of types of phase shifts to the second demultiplexed light to obtain phase-imparted local light. The camera further includes a multiplexing unit 13 which multiplexes light incident from the outside of the camera and the phase-imparted local light and obtains multiplexed light, a light receiving element 17 which detects the multiplexed light, and includes a light receiving unit 15, and an analysis processing unit 19 which, on the basis of the multiplexed light received by the light receiving element 17, analyzes the position of a subject or the distance between the subject and the camera.
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公开(公告)号：US20240195601A1
公开(公告)日：2024-06-13
申请号：US18553039
申请日：2022-02-25
发明人： Yuichiro YANO , Tetsuya IDO , Motoaki HARA
CPC分类号： H04L7/033 , H03L7/0992
摘要： A node includes: a communication module that recovers a clock signal of another node; a high-precision clock module; a first phase/frequency comparison module; a time estimation section that estimates time information of each node; a counter value correction section that corrects a counter value; a fractional PLL; a second phase/frequency comparison module; and a division ratio correction section that corrects a division ratio of the fractional PLL.
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5.发明公开公开(公告)号：US20240080184A1
公开(公告)日：2024-03-07
申请号：US18274288
申请日：2022-01-24
申请人： NEC Corporation , National Institute of Information and Communications Technology , NATIONAL UNIVERSTIY CORPORATION HOKKAIDO UNIVERSTIY , The University of Tokyo
发明人： Ken-ichiro YOSHINO , Mikio FUJIWARA , Akihisa TOMITA , Masato KOASHI , Masahiro TAKEOKA , Masahide SASAKI
CPC分类号： H04L9/0852 , H04L9/005
摘要： An object is to prevent eavesdropping in quantum key distribution. A photon detector outputs an output current indicating a result of detecting a quantum signal. A current-voltage conversion unit converts the output current into an output voltage signal. An analog-to-digital converter outputs an output voltage signal obtained by analog-digital conversion of the output voltage signal. A signal processing unit performs predetermined signal processing on the output voltage signal, and outputs a photon detection signal indicating a result of detecting the quantum signal. When a time difference between a timing at which the quantum signal is incident into the photon detector and a reference timing determined based on a clock signal is not within a determination range, the photon detection signal is not output from the signal processing unit.
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公开(公告)号：US11861307B2
公开(公告)日：2024-01-02
申请号：US17043069
申请日：2019-03-05
发明人： Yoshihiko Asao , Ryu Iida , Canasai Kruengkrai , Noriyuki Abe , Kanako Onishi , Kentaro Torisawa , Yutaka Kidawara
IPC分类号： G06F40/30 , G06F40/268 , G06N3/08 , G06F40/58 , G06N3/04
CPC分类号： G06F40/268 , G06F40/58 , G06N3/04 , G06N3/08
摘要： A request paraphrasing system 120 allowing a dialogue system to flexibly address to requests in various different manners of expression includes: a pre-processing unit 130 converting a user input 56 to a word vector sequence; and a neural paraphrasing model 94 trained in advance by machine learning to receive the word vector sequence as an input and paraphrasing a request represented by the word vector sequence to a request having a higher probability of obtaining an answer from a question-answering device 122 than the request before paraphrasing. As pre-processing, whether the user input 56 is a request or not may be determined and it may be paraphrased only when it is determined to be a request. Further, a classification model 98 may classify the input request to determine to which request class it belongs, and the classification may be input as one feature to neural paraphrasing model 94.
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公开(公告)号：US11816444B2
公开(公告)日：2023-11-14
申请号：US16969619
申请日：2019-02-12
发明人： Kenji Imamura , Atsushi Fujita , Eiichiro Sumita
IPC分类号： G06F40/58 , G06N3/08 , G06N3/084 , G06F18/211
CPC分类号： G06F40/58 , G06F18/211 , G06N3/084
摘要： Provided are a model training method for neural machine translation that enhances an encoder using a monolingual corpus of a target language and improves the accuracy of the entire translator, and a machine translation system for performing the model training method. The machine translation system 1000 uses a monolingual corpus of the target language to obtain multiple pieces of pseudo source language data, thus allowing for obtaining a large amount of pseudo parallel corpus data having diversity. Further, the machine translation system 1000 uses both the pseudo parallel corpus data having diversity, which has been obtained in large quantities, and the base parallel corpus data in a small quantity but with high accuracy, with the applied learning rates changed accordingly, to perform the learning process (training process) for the machine translation model. This allows the machine translation system 1000 to obtain a learned model (machine translation model) with very high accuracy.
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公开(公告)号：US20230359147A1
公开(公告)日：2023-11-09
申请号：US18044477
申请日：2021-09-09
发明人： Tatsuki TAHARA
IPC分类号： G03H1/26
CPC分类号： G03H1/2645 , G03H2001/2655 , G03H2222/31 , G03H2226/11 , G03H2225/32 , G03H2225/13
摘要： An image reproduction device reproduces an image including N different parameters of a wavelength range or the like, and includes: a multiple hologram acquisition part that acquires N to 2N multiple holograms obtained by multiplex-recording interference patterns for each parameter; a parameter selection part that selects the parameters one by one; a hologram generation part that generates a computer generated hologram containing two lightwaves having the selected parameter, from the multiple hologram; and a lightwave restoration part that restores one of the two lightwaves from the computer generated hologram.
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公开(公告)号：US20230330955A1
公开(公告)日：2023-10-19
申请号：US18015467
申请日：2021-07-14
申请人： NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY , SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Hidehisa TAZAWA , Yasunori MURAKAMI , Akira OTOMO , Toshiki YAMADA , Hideo YOKOHAMA , Rieko UEDA
CPC分类号： B29D11/0073 , G02F1/3615 , B29K2105/0073
摘要： A method of producing a nonlinear optical device is provided. In a surface of a semiconductor substrate, a recessed part is formed. In an environment under reduced pressure, the first liquid material is filled into the recessed part. A second liquid material is brought into contact with a first liquid material filled in the recessed part, and thereby a third liquid material is prepared. The third liquid material is solidified, and thereby an embedded portion is formed. The first liquid material includes a first solute and a first solvent, or the first liquid material consists of the first solvent. The second liquid material includes a second solute and a second solvent. The second solute includes a nonlinear optical polymer. The concentration of the second solute in the second liquid material is higher than the concentration of the first solute in the first liquid material.
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公开(公告)号：US11774288B2
公开(公告)日：2023-10-03
申请号：US17760983
申请日：2020-09-30
发明人： Tatsuki Tahara
摘要： An interference imaging device includes a light interference generator that includes: a light wave splitter configured to reflect a part of incident light and to allow a remaining part of the incident light to pass through; a phase modulator configured to modulate a phase of incident light that has passed through the light wave splitter; and a reflector configured to reflect the phase-modulated incident light from the phase modulator so that the reflected, phase-modulated incident light overlaps with incident light that has been reflected by the light wave splitter.
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