Patents by Inventor Toshiki Takeuchi

Toshiki Takeuchi 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).

  • Patent number: 12375952
    Abstract: A radio wave anomaly detection system outputs a detection result about a radio wave anomaly that is included in received data and has been detected using a first feature that is a feature extracted from the received data every first predetermined time period, and a second feature that is a feature extracted from the received data every second predetermined time period longer than the first predetermined time period.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: July 29, 2025
    Assignee: NEC CORPORATION
    Inventor: Toshiki Takeuchi
  • Patent number: 12254267
    Abstract: The present invention is an apparatus for creating an index for conducting a search on a database based on a resource including a text sentence.
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: March 18, 2025
    Assignee: Xcoo, Inc.
    Inventors: Kunihiro Nishimura, Takashi Aoki, Toshiki Takeuchi, Koichi Akabe
  • Publication number: 20250081224
    Abstract: A wireless base station includes an interference-sensing means for sensing the occurrence of interference at the wireless base station, an interference analysis means for executing analysis that is based on the result of sensing by the interference-sensing means and that includes estimation as to the continuity of the interference, and a wireless resource control means for executing wireless resource control for reducing the effect of the interference in accordance with the result of analysis by the interference analysis means. The continuity includes temporal continuity and/or spatial continuity.
    Type: Application
    Filed: December 10, 2021
    Publication date: March 6, 2025
    Applicant: NEC Corporation
    Inventors: Toshiki TAKEUCHI, Kazushi MURAOKA, Yasushi MARUTA
  • Patent number: 12231197
    Abstract: A control device configured to predict prediction information based on in-operation time-series data with use of a learning device, the learning device being trained, during training, (i) with time-series data, using as training data, in which pieces of radio quality information of respective antennas that are disposed in a distributed manner and that perform wireless communications with a terminal device are arranged in time series, and (ii) with assignment information, using as training data, that includes information about the antenna assigned, from the training data, to the wireless communications after a predetermined length of time, wherein the in-operation time-series data being the time-series data acquired during operation, and the prediction information including information about the antenna to be assigned, from the in-operation time-series data, to the wireless communications after the predetermined length of time.
    Type: Grant
    Filed: April 10, 2023
    Date of Patent: February 18, 2025
    Assignee: NEC CORPORATION
    Inventors: Toshiki Takeuchi, Kazushi Muraoka
  • Publication number: 20250046109
    Abstract: The present invention provides a document display assistance system which estimates and highlights significant words in a document of a specific field. The system comprises: a database in which selection-target words and non-selection-target words are registered; a learned word-selection model having been applied with machine learning for estimating whether a word is a selection-target word; a text pre-processing unit which segments words from an accepted display-target document; a word classification unit which classifies, based on the database, the word into any of a selection-target word, a non-selection-target word, and an indeterminate word; a text post-processing unit which generates output data by imparting a predetermined attribute to a predetermined word in the display-target document; and an output unit which outputs the output data.
    Type: Application
    Filed: October 21, 2024
    Publication date: February 6, 2025
    Applicant: Xcoo, Inc.
    Inventors: Koichi AKABE, Toshiki TAKEUCHI, Takashi AOKI, Kunihiro NISHIMURA
  • Patent number: 12217587
    Abstract: A wireless terminal detection system provided with user position information acquisition means for measuring a position of a reception-side wireless terminal; pattern classification means for classifying movement patterns extracted from position history information of the reception-side wireless terminal into ordinary patterns and non-ordinary patterns based on classification results in which the movement patterns are classified in accordance with times and positions; and determination means for determining whether a transmission-side wireless terminal, which is a transmission source of radio waves received by the reception-side wireless terminal, is a suspicious terminal based on a reception history of radio waves from the transmission-side wireless terminal in time intervals classified as the non-ordinary patterns.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: February 4, 2025
    Assignee: NEC CORPORATION
    Inventors: Jun Sakai, Masaki Kitsunezuka, Toshiki Takeuchi, Taichi Ohtsuji, Shoji Nishimura, Yasufumi Hirakawa
  • Publication number: 20240397351
    Abstract: A wireless control unit transmits to a plurality of analog sections a control signal for performing control so as to cause the plurality of analog sections to transition to a loopback mode, transmits to the plurality of analog sections an observation signal for observing delay times, calculates, for each of the plurality of analog sections, a path delay based on the number of clocks generated from when the observation signal is transmitted to when the observation signal is received, and transmits to the plurality of analog sections a control signal for canceling the loopback mode of the plurality of analog sections. In addition, the wireless control unit transmits a downlink signal at a timing calculated for each of the plurality of analog sections according to the path delay.
    Type: Application
    Filed: May 16, 2024
    Publication date: November 28, 2024
    Applicant: NEC Corporation
    Inventors: Naoto ISHII, Toshiki TAKEUCHI, Daisaku OGASAHARA
  • Patent number: 12154363
    Abstract: The present invention provides a document display assistance system which estimates and highlights significant words in a document of a specific field. The system comprises: a database in which selection-target words and non-selection-target words are registered; a learned word-selection model having been applied with machine learning for estimating whether a word is a selection-target word; a text pre-processing unit which segments words from an accepted display-target document; a word classification unit which classifies, based on the database, the word into any of a selection-target word, a non-selection-target word, and an indeterminate word; a text post-processing unit which generates output data by imparting a predetermined attribute to a predetermined word in the display-target document; and an output unit which outputs the output data.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: November 26, 2024
    Assignee: Xcoo, Inc.
    Inventors: Koichi Akabe, Toshiki Takeuchi, Takashi Aoki, Kunihiro Nishimura
  • Publication number: 20240386324
    Abstract: The learning model generator includes a data division unit which groups multiple feature data, each of which indicates a feature, and a learning model generation unit which generates a learning model using feature data belonging to a first group among multiple groups formed by the data division unit, or the feature data belonging to the first group and a part of feature data belonging to other groups, as training data.
    Type: Application
    Filed: May 9, 2024
    Publication date: November 21, 2024
    Applicants: NEC Corporation, NEC Platforms, Ltd.
    Inventors: Shoya TOKITA, Jun SAKAI, Toshiki TAKEUCHI, Ayaka HARAYAMA, Tsuyoshi HAMADA, Tomohiro SHIMODA
  • Publication number: 20240284291
    Abstract: In order to control radio communication with a terminal apparatus in accordance with a movement situation of the terminal apparatus, a radio control apparatus is configured to estimate a location of the terminal apparatus, estimate a type of the terminal apparatus, predict movement of the terminal apparatus based on the estimated location, predict a future location of the terminal apparatus, estimate, based on the estimated type, a reception level of a radio signal at the future location for each communication parameter, and determine the communication parameter to be used for the terminal apparatus at the future location, based on an estimation result of the reception level.
    Type: Application
    Filed: October 15, 2021
    Publication date: August 22, 2024
    Applicant: NEC Corporation
    Inventors: Kazushi MURAOKA, Toshiki TAKEUCHI, Yasushi MARUTA
  • Patent number: 12058527
    Abstract: A transmission apparatus recognition apparatus includes a storage unit that stores K sets of template feature groups for estimating K (an integer of 2 or more) kinds of information indicative of a transmission apparatus, a degree-of-similarity calculation unit that generates an i (an integer of 1 to K)-th sample feature from a radio feature, and calculates an i-th degree-of-similarity group, based on the i-th sample feature and an i-th set of the template feature group, a summed degree-of-similarity calculation unit that calculates a summed degree of similarity by summing K degrees of similarity by using an i-th weighting factor with respect to 1 to K of i, and an estimation unit that estimates that K information pieces, which are correlated in advance with calculation sources of K degrees of similarity having the summed degree of similarity that is highest, are information indicative of the transmission apparatus.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: August 6, 2024
    Assignee: NEC CORPORATION
    Inventors: Taichi Ohtsuji, Toshiki Takeuchi, Hiroyuki Akiba
  • Patent number: 11930476
    Abstract: The present invention is designed to make it possible to draw proper associations, when integrating pieces of information estimated in individual sensors, by associating between objects sensed by a plurality of sensors. A sensor information integration system 101 includes a radio frame analyzing section 33 configured to analyze a radio frame transmitted from a first object, to extract the first attribute information, an image analyzing section 40 configured to analyze an image, in which a second object is sensed, to extract second attribute information, and an association judging section 21 configured to judge an association between the first object and the second object, using the first attribute information and the second attribute information.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: March 12, 2024
    Assignee: NEC CORPORATION
    Inventor: Toshiki Takeuchi
  • Patent number: 11881970
    Abstract: A signal detection unit detects, from a baseband signal of a received radio wave, two types of fixed signal sections that have different communication information and are present in sufficiently shorter time than a time period in which influence of fading fluctuates, and designate the detected two types of fixed signal sections as an information-1 section and an information-2 section. An information-1 section signal processing unit clips the information-1 section from the baseband signal, and performs Fourier transform on the clipped information-1 section. An information-2 section signal processing unit clips the information-2 section from the baseband signal, and performs Fourier transform on the clipped information-2 section. A feature value computation unit computes a feature value, based on an output of the information-1 section signal processing unit and an output of the information-2 section signal processing unit.
    Type: Grant
    Filed: November 17, 2022
    Date of Patent: January 23, 2024
    Assignee: NEC CORPORATION
    Inventors: Kiyohiko Takahashi, Toshiki Takeuchi, Naoto Ishii
  • Patent number: 11877168
    Abstract: A radio frame analysis system includes: an analysis unit that analyzes a network configuration by performing clustering processing on a frame feature value; a distance calculation unit that calculates a distance between clusters obtained by the clustering processing; a reliability determination unit that determines reliability of a result of the clustering processing based on the distance between the clusters; an output unit that outputs a result of the analysis performed by the analysis unit; and an output timing change unit that changes a timing at which the output unit outputs the result of the analysis by changing the number of samples of the frame feature value required to output the result in accordance with the reliability.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: January 16, 2024
    Assignee: NEC CORPORATION
    Inventors: Toshiki Takeuchi, Kohei Okada
  • Publication number: 20230403672
    Abstract: To provide a wireless control device, a wireless communication system, a wireless control method, and a wireless control program that are able to achieve stable communication quality. The wireless control device includes: a movement prediction unit configured to predict a movement of a wireless terminal configured to perform wireless communication; a propagation change determination unit configured to determine a propagation change degree indicating a degree of an extent that propagation of the wireless communication including received power of the wireless communication changes within a predetermined assumed delay time; and a selection unit configured to select, from among a plurality of antennas and a plurality of beams, at least any of the antenna and the beam being used for wireless communication control with the wireless terminal, based on the propagation change degree being determined by the propagation change determination unit.
    Type: Application
    Filed: November 28, 2022
    Publication date: December 14, 2023
    Applicant: NEC Corporation
    Inventors: Toshiki TAKEUCHI, Kazushi Muraoka
  • Publication number: 20230376682
    Abstract: The present invention is an apparatus for creating an index for conducting a search on a database based on a resource including a text sentence.
    Type: Application
    Filed: July 27, 2023
    Publication date: November 23, 2023
    Applicant: Xcoo, Inc.
    Inventors: Kunihiro NISHIMURA, Takashi AOKI, Toshiki TAKEUCHI, Koichi AKABE
  • Publication number: 20230344478
    Abstract: A control device configured to predict prediction information based on in-operation time-series data with use of a learning device, the learning device being trained, during training, (i) with time-series data, using as training data, in which pieces of radio quality information of respective antennas that are disposed in a distributed manner and that perform wireless communications with a terminal device are arranged in time series, and (ii) with assignment information, using as training data, that includes information about the antenna assigned, from the training data, to the wireless communications after a predetermined length of time, wherein the in-operation time-series data being the time-series data acquired during operation, and the prediction information including information about the antenna to be assigned, from the in-operation time-series data, to the wireless communications after the predetermined length of time.
    Type: Application
    Filed: April 10, 2023
    Publication date: October 26, 2023
    Applicant: NEC Corporation
    Inventors: Toshiki TAKEUCHI, Kazushi MURAOKA
  • Publication number: 20230289569
    Abstract: The present disclosure provides, for example, a non-transitory computer readable medium including program instructions that automatically extracts a clinically important mutation from genome data. The non-transitory computer readable medium including program instructions which when executed by a processor (21) causing a computer to execute a process comprising: acquiring, by the processor, training data in which genome data obtained by reading a base sequence included in a specimen and a genetic mutation according to the specimen are recorded in association with each other, for a plurality of genetic tests performed in the past; and generating, by the processor, a learning model (53) for outputting a prediction relevant to the genetic mutation based on the specimen in a case where the genome data obtained by reading the base sequence included in the specimen is input by setting the genome data as input and the genetic mutation as output.
    Type: Application
    Filed: July 28, 2020
    Publication date: September 14, 2023
    Inventors: Kunihiro Nishimura, Takashi Aoki, Toshiki Takeuchi, Jun Imura
  • Patent number: 11755833
    Abstract: The present invention is an apparatus for creating an index for conducting a search on a database based on a resource including a text sentence.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: September 12, 2023
    Assignee: Xcoo, Inc.
    Inventors: Kunihiro Nishimura, Takashi Aoki, Toshiki Takeuchi, Koichi Akabe
  • Patent number: 11700163
    Abstract: A modulation format estimation device 100 includes: a frequency shift correction unit 112 configured to estimate the amount of a frequency shift using a baseband signal acquired from a received signal and correct the baseband signal based on an estimation result; a frequency error generation unit 122 configured to generate a plurality of frequency errors from a range set based on an error occurring in the estimation of the frequency shift amount; a frequency error introduction unit 123 configured to acquire learning baseband signals in which each of a plurality of source signals modulated by different modulation formats is frequency-shifted by each frequency error; and a modulation format estimation unit 113 configured to input a corrected baseband signal to a first machine learning model created by machine learning using learning data including the plurality of learning baseband signals and a label, and estimate a modulation format of the received signal.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: July 11, 2023
    Assignee: NEC CORPORATION
    Inventors: Kiyohiko Takahashi, Kaoru Kishimoto, Toshiki Takeuchi, Taichi Ohtsuji