Patents by Inventor Takeshi Kuwahara

Takeshi Kuwahara 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: 11977450
    Abstract: Backup system and method that can determine a backup destination in consideration of disaster are provided. There are provided: a data acquisition unit 110 that acquires disaster information, network information, and node information; a replication group construction unit 130 that generates, based on the disaster information, and the like, replication group information including association information between a first node that stores original data and one or more second nodes that are candidates for backup destination of the original data, and saves the replication group information in a storage unit 120; a replication destination node calculation unit 140 that, when executing backup of the original data, calculates the second node as backup destination from the replication group; and a replication processing unit 230 that replicates and stores the original data into the storage of the second node.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: May 7, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takuma Tsubaki, Ryota Ishibashi, Kotaro Ono, Yuki Nakahara, Takeshi Kuwahara, Naoki Higo, Kenta Kawakami, Yusuke Urata
  • Patent number: 11968121
    Abstract: A control apparatus configured to, in a network constituted by the multiple communication apparatuses, control one or more anchor nodes designated in advance among the multiple communication apparatuses, includes: a route creation unit configured to create route information including labels of communication apparatuses or links to be passed through, based on an input required condition; a route compression unit configured to divide the labels included in the route information in units of anchor nodes, and compress at least a portion of the labels included in the route information into a compressed label that can be expanded in at least one anchor node among the communication apparatuses determined based on the route information, so as not to exceed a processing limit of a communication apparatus determined based on the route information; and a distribution unit configured to distribute information for expanding the compressed label to the at least one anchor node.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: April 23, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yukihiro Togari, Hisashi Kojima, Takeshi Kuwahara
  • Patent number: 11895146
    Abstract: Provided is an infection-spreading attack detection system and method, as well as a program enabling an occurrence of an infection-spreading attack to be detected with high accuracy. A first feature amount is calculated based on traffic information on a packet transferred by a transfer device, and M partial address space(s) are identified to be a monitoring target based on the first feature amount. A second feature amount is calculated for each of the M partial address space(s) based on the traffic information related to the M partial address space(s). Abnormality detection determination is performed on each of the M partial address space(s) based on the second feature amount. Whether the infection-spreading attack has occurred is determined by evaluating M determination results.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: February 6, 2024
    Inventors: Yukihiro Togari, Hiroaki Maeda, Hisashi Kojima, Takeshi Kuwahara
  • Patent number: 11876066
    Abstract: The bonding wire being a Pd-coated copper bonding wire includes: a copper core material; and a Pd layer and containing a sulfur group element, in which with respect to the total of copper, Pd, and the sulfur group element, a concentration of Pd is 1.0 mass % to 4.0 mass % and a total concentration of the sulfur group element is 50 mass ppm or less, and a concentration of S is 5 mass ppm to 2 mass ppm, a concentration of Se is 5 mass ppm to 20 mass ppm, or a concentration of Te is 15 mass ppm to 50 mass ppm or less. A wire bonding structure includes a Pd-concentrated region with the concentration of Pd being 2.0 mass % or more relative to the total of Al, copper, and Pd near a bonding surface of an Al-containing electrode of a semiconductor chip and a ball bonding portion.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: January 16, 2024
    Assignee: TANAKA DENSHI KOGYO K.K.
    Inventors: Hiroyuki Amano, Yuki Antoku, Takeshi Kuwahara, Tsukasa Ichikawa
  • Patent number: 11875192
    Abstract: A system and method capable of efficiently using and operating resources and allowing a cluster satisfying requirements of functions/services provided to terminals to be configured of multi-access edge computing (MEC) servers are provided.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: January 16, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kotaro Ono, Naoki Higo, Takuma Tsubaki, Yusuke Urata, Ryota Ishibashi, Kenta Kawakami, Takeshi Kuwahara
  • Patent number: 11863584
    Abstract: An occurrence of an infection-spreading attack and an attack source thereof are detected with high accuracy. A first feature value is calculated based on traffic information regarding a packet forwarded by a forwarding device, and M partial address spaces to be monitored are specified based on the first feature value. A second feature value is calculated for each address of a terminal in a network, based on traffic information regarding the M partial address spaces, the second feature value is learned to classify terminal addresses into a plurality of clusters, and whether or not each of the clusters is an infection-spreading attack is determined to generate cluster information. Whether or not an infection-spreading attack has occurred and an address of a terminal that is an attack source are specified based on the second feature value and the cluster information.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: January 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yukihiro Togari, Hiroaki Maeda, Hisashi Kojima, Takeshi Kuwahara
  • Patent number: 11863462
    Abstract: A resource allocation device includes: a course estimation unit that estimates a course of each mobile terminal based on a location of a mobile terminal acquired from a network device, and estimates a probability that each mobile terminal is located in each area at time of prediction; a determination unit that calculates, for each area, the number of mobile terminals in the area using the probability and determines whether the maximum value of an overcommit ratio for each area exceeds an upper limit; and an execution unit that executes the allocation or release of resources to an MEC server group located in each area when the maximum value of the overcommit ratio is equal to or less than the upper limit, and refrains from executing the allocation or release of the resources to the MEC server group when the maximum value of the overcommit ratio exceeds the upper limit.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: January 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kotaro Ono, Ryota Ishibashi, Takuma Tsubaki, Naoki Higo, Yuki Nakahara, Takeshi Kuwahara
  • Publication number: 20230412522
    Abstract: A control device that performs resource allocation to a network including a transmission device, one or more transfer devices, and a reception device as nodes, the control device including a schedule database unit that holds schedules of time slots not allocated to specific communication, the schedules being set in advance for respective nodes of the network, and a schedule processing unit that, in a case where a communication request is received, selects a time slot that satisfies a transmission request amount of the transmission device on the basis of remaining transmittable amounts of respective time slots in the schedules and notifies the transmission device of a selected time slot.
    Type: Application
    Filed: November 25, 2020
    Publication date: December 21, 2023
    Inventors: Hiroki IWASAWA, Nobuhiro AZUMA, Takahide KITSU, Hitoshi MASUTANI, Takeshi KUWAHARA
  • Publication number: 20230244225
    Abstract: A control device for controlling a moving body in a system of monitoring the moving body from a remote location via a network includes a policy database configured to store policy information for controlling the moving body, a policy information calculation unit configured to calculate policy information indicating details of control according to a quality of the network on the basis of surrounding conditions of the moving body and to store the policy information in the policy database, and a control execution unit configured to acquire the quality of the network and to execute control corresponding to the quality of the network with reference to the policy information.
    Type: Application
    Filed: March 12, 2021
    Publication date: August 3, 2023
    Inventors: Takuma TSUBAKI, Ryota ISHIBASHI, Takeshi KUWAHARA
  • Patent number: 11695702
    Abstract: A packet transfer device 100 includes a packet classification unit 120 configured to classify received packets, queues 140 for respective classifications, priorities being set to the queues, a dequeue processing unit 150 configured to extract packets from the queue under a predetermined rule based on the priorities set to the queues, and a queue priority control unit 130 configured to perform control, upon detecting that a reception amount of packets related to a communication flow temporarily or intermittently increases from a reception amount under a normal condition, such that a priority of one of the queues holding the packets related to the communication flow is temporarily raised from a priority under the normal condition, during a period while the reception amount of packets related to the communication flow temporarily or intermittently increases.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: July 4, 2023
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hiroki Iwasawa, Kenta Kawakami, Takeshi Kuwahara
  • Publication number: 20230169712
    Abstract: In a resource estimation device 1 that estimates a resource necessary for a virtual terminal, the resource estimation device 1 being installed at an edge of a cloud, the virtual terminal performing rendering of a VR image, the resource estimation device 1 includes: a resource estimation unit 230 configured to calculate a resource value corresponding to a VR image output scheme and a characteristic value of 3D data, using resource relation information, the resource value being necessary to cause the virtual terminal to operate at the characteristic value, the VR image output scheme being a scheme for outputting the VR image and being input, the 3D data being data about an object that is drawn by a VR application program, the resource relation information being set for each VR image output scheme and indicating a relation about change between the characteristic value and the resource value, and configured to calculate the calculated resource value as the resource necessary for the virtual terminal; and a relati
    Type: Application
    Filed: February 28, 2020
    Publication date: June 1, 2023
    Inventors: Daishi AIURA, Hiroki IWASAWA, Kenta KAWAKAMI, Takeshi KUWAHARA
  • Publication number: 20230169862
    Abstract: A video distribution device according to an embodiment is a video distribution device that distributes videos from a plurality of cameras installed in each of a plurality of vehicles that perform autonomous driving to a terminal, and includes a probability of collision calculating unit that calculates a probability of collision indicating a probability of the vehicles colliding with an object by a predetermined time of day, a selecting unit that selects, out of the videos of the plurality of cameras, video from a camera installed in a vehicle of which the probability of collision is highest, and a control unit for setting video quality of the video of the selected camera to be high.
    Type: Application
    Filed: April 16, 2020
    Publication date: June 1, 2023
    Inventors: Takuma TSUBAKI, Ryota ISHIBASHI, Yuki NAKAHARA, Kotaro ONO, Takeshi KUWAHARA
  • Publication number: 20230134535
    Abstract: In an information processing device 100 including a GPU learning cluster, the GPU learning cluster includes a main container (first execution unit) 4 that executes a learning program of a job submitted by a user inside the job; and a helper container (second execution unit) 6 that executes processing of making a private network connection to a storage of the user to mount the storage inside the job. The main container (first execution unit) 4 reads data to be learned from the mounted storage, and executes the learning program by using the data to be learned.
    Type: Application
    Filed: April 16, 2020
    Publication date: May 4, 2023
    Inventors: Kenzo OKUDA, Hitoshi MASUTANI, Takeshi HIROTA, Takeshi KUWAHARA
  • Publication number: 20230086437
    Abstract: A name resolution result control system which controls a name resolution result at a terminal which utilizes an application on one or more edge platforms which are physically deployed in a dispersed manner includes a name resolution unit configured to receive a request for name resolution for the application from the terminal and transmit information of the application on an edge platform which is optimal for the terminal to the terminal as a name resolution result, and a name resolution result control unit configured to execute control for deleting the name resolution result at the terminal by being triggered by a predetermined event.
    Type: Application
    Filed: February 28, 2020
    Publication date: March 23, 2023
    Inventors: Kotaro ONO, Yuki NAKAHARA, Ryota ISHIBASHI, Takeshi KUWAHARA
  • Publication number: 20230007919
    Abstract: A control device includes an information acquisition unit that receives a source address of a packet from a node that receives the packet transmitted from a user terminal, and acquires position information about the user terminal on a basis of the source address, a determination unit that determines a hub to which the user terminal should connect, on a basis of the position information, and a control execution unit that launches an application in the hub and changes a routing such that packets transmitted from the user terminal are transmitted to the application.
    Type: Application
    Filed: December 3, 2019
    Publication date: January 12, 2023
    Inventors: Naoki HIGO, Ryota ISHIBASHI, Yuki Nakahara, Takeshi KUWAHARA
  • Patent number: 11552897
    Abstract: Provided is a remote control system and a method enabling packets, related to a control signal and simultaneously transmitted from a controller to a plurality of controlled devices, to be received by the controlled devices without a difference in delay. Edge nodes that are packet transfer devices are provided on communication paths between a controller provided on a network and a plurality of controlled devices provided in a location. The edge nodes each include a transfer processing unit that transfers the packets from the controller to the controlled devices, and a timing control unit that controls transmission timing of the packets in the transfer processing unit to reduce a difference in arrival time of a plurality of packets simultaneously transmitted from the controller to the plurality of controlled devices, at the plurality of controlled devices.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: January 10, 2023
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yuki Nakahara, Ryota Ishibashi, Takeshi Kuwahara
  • Patent number: 11546545
    Abstract: A video management device includes a storage processing unit configured to store video data received through a network in a storage unit, a calculation unit configured to classify a video data group stored in the storage unit based on combinations of imaging locations and content of video data, and to calculate a frequency of appearance of each of the combinations, and a selection unit configured to select video data to be deleted from the storage unit based on the frequency of appearance, thereby increasing a possibility that the deletion of a high-value video will be avoided.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: January 3, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuma Tsubaki, Naoki Higo, Kojun Koshiji, Toshimitsu Tsubaki, Takeshi Kuwahara
  • Publication number: 20220366629
    Abstract: A delay measurement device that is to be connected, via a communication network, to a rendering server that performs rendering processing on an image, includes: transmission means for transmitting, to the rendering server, sensor information acquired from a sensor included in the delay measurement device and trigger information acquired in a predetermined time period; receiving means for receiving a rendered image generated through the rendering processing performed in the rendering server based on the sensor information and the trigger information; and measurement means for measuring a predetermined delay based on a difference between a first time indicating a time when the trigger information was transmitted to the rendering server and a second time indicating a time when the rendered image or a predetermined image was displayed.
    Type: Application
    Filed: July 1, 2019
    Publication date: November 17, 2022
    Inventors: Shinya Tamaki, Takeshi KUWAHARA, Kenta KAWAKAMI, Yusuke URATA, Hiroki Iwasawa
  • Patent number: 11477121
    Abstract: A packet transfer apparatus is configured to perform packet exchange processing for exchanging multiple continuous packets with low delay while maintaining fairness between communication flows of the same priority level. The packet transfer apparatus includes: a packet classification unit; queues that holds the classified packets for each classification; and a dequeue processing unit that extracts packets from the queues. The dequeue processing unit includes a scheduling unit that controls the packet extraction amount extracted from the queue for a specific communication flow based on information on the amount of data that is requested by the communication flow and is to be continuously transmitted in packets.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: October 18, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hiroki Iwasawa, Kazuhiro Tokunaga, Shinya Tamaki, Takeshi Kuwahara
  • Patent number: 11467797
    Abstract: Provided is a virtual world construction system that does not impair consistency between virtual worlds and places only small loads on terminals. A client application 10 that is implemented on a user terminal, a plurality of server applications 20 that are implemented on servers, and a proxy 30 that is located on a communication path between the user terminal and the servers and relays operation information and video information are provided. The proxy 30 includes a motion duplication unit 31 that transmits operation information to the plurality of servers by duplicating the operation information, and a video integration/rendering control unit 32 that transmits timing information regarding rendering timing to the plurality of servers, and transmits video information received from at least one of the servers, to the user terminals.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: October 11, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Naoki Higo, Ryota Ishibashi, Takuma Tsubaki, Kojun Koshiji, Toshimitsu Tsubaki, Takeshi Kuwahara