Patents by Inventor Kazuaki Nakajima

Kazuaki Nakajima 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: 11348587
    Abstract: Review of online communications that is performed with sharing web pages is enabled by a system that stores the shared web pages and the titles which are used during an online communication. A reference history recording portion stores the order in which the shared web pages were shared and a reference time during the online communication. Titles of the shared web pages are displayed for the online communication along a time series on a display terminal. In addition, each reference time for the shared web pages is displayed.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: May 31, 2022
    Assignee: BELLFACE, INC.
    Inventor: Kazuaki Nakajima
  • Publication number: 20220085036
    Abstract: A semiconductor storage device includes first wiring layers stacked along a first direction, a first pillar including a first semiconductor layer and extending along the first direction through the first wiring layers, a second wiring layer disposed above the first pillar in the first direction and extending along a second direction perpendicular to the first direction, a semiconductor-containing layer including a first portion disposed on an upper end of the first pillar in the first direction, a second portion contacting the first portion and formed along the second wiring layer, and a third portion contacting an upper end of the second portion and extending along a third direction perpendicular to the first direction and crossing the second direction, and a first insulating layer between each of the first and second portions of the semiconductor-containing layer and the second wiring layer. An upper surface of the third portion contains a metal.
    Type: Application
    Filed: March 2, 2021
    Publication date: March 17, 2022
    Inventors: Yasuhito YOSHIMIZU, Hiroshi NAKAKI, Kazuaki NAKAJIMA
  • Publication number: 20220014550
    Abstract: An object is to provide a monitor device capable of reducing threat of DoS attacks on a mobile network. A monitor device (10) according to the present invention includes a signal monitor unit (11) for estimating a specific base station communicating with a communication terminal (30) attacking a mobile network according to the number of times an ATTACH procedure is rejected, in which the ATTACH procedure is for registering information about a communication terminal (30) communicating with a base station (20) in a communication device (40) located in the mobile network, and a base station control unit (12) for causing the specific base station to determine whether to execute the ATTACH procedure related to a communication terminal served by the specific base station according to communication terminal identification information set in a signal transmitted from the communication terminal served by the specific base station.
    Type: Application
    Filed: September 23, 2021
    Publication date: January 13, 2022
    Applicant: NEC Corporation
    Inventors: Kazuaki NAKAJIMA, Shinji MASUDA, Toshiyuki TAMURA, Hidemi ISHIKAWA, Masayuki SHINSHO
  • Patent number: 11190541
    Abstract: An object is to provide a monitor device capable of reducing threat of DoS attacks on a mobile network. A monitor device (10) according to the present invention includes a signal monitor unit (11) for estimating a specific base station communicating with a communication terminal (30) attacking a mobile network according to the number of times an ATTACH procedure is rejected, in which the ATTACH procedure is for registering information about a communication terminal (30) communicating with a base station (20) in a communication device (40) located in the mobile network, and a base station control unit (12) for causing the specific base station to determine whether to execute the ATTACH procedure related to a communication terminal served by the specific base station according to communication terminal identification information set in a signal transmitted from the communication terminal served by the specific base station.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: November 30, 2021
    Assignee: NEC CORPORATION
    Inventors: Kazuaki Nakajima, Shinji Masuda, Toshiyuki Tamura, Hidemi Ishikawa, Masayuki Shinsho
  • Patent number: 10834542
    Abstract: A method includes the steps of: disconnecting a first device included in a first P2P group from the first P2P group so that the first device joins to a second P2P group; and in synchronization with the first device switching to the second P2P group, disconnecting a second device included in the second P2P group from the second P2P group so that the second device joins to the first P2P group.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: November 10, 2020
    Assignee: NEC CORPORATION
    Inventors: Prakash Chaki, Masato Yasuda, Kazuaki Nakajima
  • Patent number: 10664468
    Abstract: The present invention enables a predetermined user and a customer of the predetermined user to be easily associated, and to engage in communication having a shared web page, without installing dedicated software or the like. A communication support device 1 generates, with a generating processor 13, a web page that is deployed on a mutually associated user terminal 2 and customer terminal 3, the web page having a shared web page that is shared by the user and the customer displayed within a predetermined display area. A transition history acquirer 14 acquires a transition history of the shared web pages from the mutually associated user terminal 2 and customer terminal 3, and on the basis of the transition history, when there is a transition of the shared web page on one of the mutually associated user terminal 2 or customer terminal 3, a synchronization processor 15 synchronizes the shared web page on the other terminal with a post-transition web page as a new shared web page.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: May 26, 2020
    Assignee: Bellface Inc.
    Inventors: Kazuaki Nakajima, Satoshi Hashimoto
  • Patent number: 10652730
    Abstract: A mechanism which can achieve enhanced network performance in wireless P2P groups is disclosed. A method for group reformation in wireless peer-to-peer (P2P) networks, includes: monitoring traffic of a first device of a first P2P group, the first device communicating with a second device of at least one second P2P group; and altering group formation of the first and second P2P groups so as to put the first device and the second device together in a single P2P group, based on monitored traffic of the first device.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: May 12, 2020
    Assignee: NEC CORPORATION
    Inventors: Prakash Chaki, Masato Yasuda, Kazuaki Nakajima
  • Publication number: 20200126564
    Abstract: Review of online communications that is performed with sharing web pages is enabled by a system that stores the shared web pages and the titles which are used during an online communication. A reference history recording portion stores the order in which the shared web pages were shared and a reference time during the online communication. Titles of the shared web pages are displayed for the online communication along a time series on a display terminal. In addition, each reference time for the shared web pages is displayed.
    Type: Application
    Filed: August 16, 2019
    Publication date: April 23, 2020
    Inventor: Kazuaki Nakajima
  • Patent number: 10631225
    Abstract: A device includes an upper layer that performs routing at least one packet and a Peer to Peer (P2P) unit that provides information about formation of a wireless P2P network to the upper layer which is higher than a data link layer.
    Type: Grant
    Filed: July 3, 2015
    Date of Patent: April 21, 2020
    Assignee: NEC CORPORATION
    Inventors: Prakash Chaki, Masato Yasuda, Kazuaki Nakajima
  • Patent number: 10448253
    Abstract: The present invention provides a communication method in a wireless communication network in which a first wireless terminal establishes a peer-to-peer wireless connection with a second wireless terminal. The first terminal determines whether or not the second wireless terminal is a universal terminal on the basis of information received from the second wireless terminal. The first wireless terminal controls access to a resource in the first wireless terminal by the second wireless terminal after a connection is established in accordance with the result of the determination.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: October 15, 2019
    Assignee: NEC CORPORATION
    Inventors: Masato Yasuda, Kazuaki Nakajima
  • Patent number: 10425476
    Abstract: A mechanism by which the number of groups can be reduced in a multi-group P2P network is disclosed. A method for group formation in wireless peer-to-peer (P2P) networks, includes: exchanging group-related information between group owners of neighboring P2P groups; deciding on whether a combined group of the neighboring P2P groups meets a predetermined condition of either of the neighboring P2P groups, based on the group-related information of the neighboring P2P groups; and merging the neighboring P2P groups to form at least one single group when the combined group meets the predetermined condition.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: September 24, 2019
    Assignee: NEC CORPORATION
    Inventors: Prakash Chaki, Masato Yasuda, Kazuaki Nakajima
  • Patent number: 10362452
    Abstract: A connection method in a wireless peer-to-peer group of nodes, wherein one of the nodes acts as a leader and others act as clients of the group, includes the steps of: sending credential information required for creating a virtual persistent group configuration from the leader to each of the clients; creating a virtual persistent group configuration at each of the clients which has received the credential information from the leader; and when leadership of the leader disappears, establishing a first-time connection between a first client and a second client based on persistent mechanism by invitation using the virtual persistent group configuration.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: July 23, 2019
    Assignee: NEC Corporation
    Inventors: Prakash Chaki, Masato Yasuda, Kazuaki Nakajima
  • Patent number: 10244379
    Abstract: A method includes: performing a scan to discover at least one Peer to Peer (P2P) group; sharing a result of the scan within a first P2P group; preparing a switching schedule of the first P2P group based on the shared result; wherein the switching schedule enables a switching device to disconnect from a first owner device in the first P2P group and to connect with a second owner device in a second P2P group; sharing an information with the second P2P group by using the switching device; and performing communication among the first P2P group and the second P2P group on the basis of the information.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: March 26, 2019
    Assignee: NEC Corporation
    Inventors: Prakash Chaki, Masato Yasuda, Kazuaki Nakajima
  • Publication number: 20190014172
    Abstract: A mechanism by which the number of groups can be reduced in a multi-group P2P network is disclosed. A method for group formation in wireless peer-to-peer (P2P) networks, includes: exchanging group-related information between group owners of neighboring P2P groups; deciding on whether a combined group of the neighboring P2P groups meets a predetermined condition of either of the neighboring P2P groups, based on the group-related information of the neighboring P2P groups; and merging the neighboring P2P groups to form at least one single group when the combined group meets the predetermined condition.
    Type: Application
    Filed: September 3, 2015
    Publication date: January 10, 2019
    Applicant: NEC CORPORATION
    Inventors: Prakash CHAKI, Masato YASUDA, Kazuaki NAKAJIMA
  • Publication number: 20190007801
    Abstract: A method includes the steps of: disconnecting a first device included in a first P2P group from the first P2P group so that the first device joins to a second P2P group; and in synchronization with the first device switching to the second P2P group, disconnecting a second device included in the second P2P group from the second P2P group so that the second device joins to the first P2P group.
    Type: Application
    Filed: December 28, 2015
    Publication date: January 3, 2019
    Applicant: NEC Corporation
    Inventors: Prakash CHAKI, Masato YASUDA, Kazuaki NAKAJIMA
  • Publication number: 20180376400
    Abstract: A device includes an upper layer that performs routing at least one packet and a Peer to Peer (P2P) unit that provides information about formation of a wireless P2P network to the upper layer which is higher than a data link layer.
    Type: Application
    Filed: July 3, 2015
    Publication date: December 27, 2018
    Applicant: NEC CORPORATION
    Inventors: Prakash CHAKI, Masato YASUDA, Kazuaki NAKAJIMA
  • Publication number: 20180343547
    Abstract: A connection method in a wireless peer-to-peer group of nodes, wherein one of the nodes acts as a leader and others act as clients of the group, includes the steps of: sending credential information required for creating a virtual persistent group configuration from the leader to each of the clients; creating a virtual persistent group configuration at each of the clients which has received the credential information from the leader; and when leadership of the leader disappears, establishing a first-time connection between a first client and a second client based on persistent mechanism by invitation using the virtual persistent group configuration.
    Type: Application
    Filed: November 26, 2014
    Publication date: November 29, 2018
    Applicant: NEC Corporation
    Inventors: Prakash CHAKI, Masato YASUDA, Kazuaki NAKAJIMA
  • Publication number: 20180309783
    Abstract: An object is to provide a monitor device capable of reducing threat of DoS attacks on a mobile network. A monitor device (10) according to the present invention includes a signal monitor unit (11) for estimating a specific base station communicating with a communication terminal (30) attacking a mobile network according to the number of times an ATTACH procedure is rejected, in which the ATTACH procedure is for registering information about a communication terminal (30) communicating with a base station (20) in a communication device (40) located in the mobile network, and a base station control unit (12) for causing the specific base station to determine whether to execute the ATTACH procedure related to a communication terminal served by the specific base station according to communication terminal identification information set in a signal transmitted from the communication terminal served by the specific base station.
    Type: Application
    Filed: July 4, 2016
    Publication date: October 25, 2018
    Applicant: NEC CORPORATION
    Inventors: Kazuaki NAKAJIMA, Shinji MASUDA, Toshiyuki TAMURA, Hidemi ISHIKAWA, Masayuki SHINSHO
  • Publication number: 20180206110
    Abstract: A mechanism which can achieve enhanced network performance in wireless P2P groups is disclosed. A method for group reformation in wireless peer-to-peer (P2P) networks, includes: monitoring traffic of a first device of a first P2P group, the first device communicating with a second device of at least one second P2P group; and altering group formation of the first and second P2P groups so as to put the first device and the second device together in a single P2P group, based on monitored traffic of the first device.
    Type: Application
    Filed: September 3, 2015
    Publication date: July 19, 2018
    Applicant: NEC Corporation
    Inventors: Prakash CHAKI, Masato YASUDA, Kazuaki NAKAJIMA
  • Publication number: 20180173746
    Abstract: The present invention enables a predetermined user and a customer of the predetermined user to be easily associated, and to engage in communication having a shared web page, without installing dedicated software or the like. A communication support device 1 generates, with a generating processor 13, a web page that is deployed on a mutually associated user terminal 2 and customer terminal 3, the web page having a shared web page that is shared by the user and the customer displayed within a predetermined display area. A transition history acquirer 14 acquires a transition history of the shared web pages from the mutually associated user terminal 2 and customer terminal 3, and on the basis of the transition history, when there is a transition of the shared web page on one of the mutually associated user terminal 2 or customer terminal 3, a synchronization processor 15 synchronizes the shared web page on the other terminal with a post-transition web page as a new shared web page.
    Type: Application
    Filed: June 10, 2016
    Publication date: June 21, 2018
    Applicant: BELLFACE INC.
    Inventors: Kazuaki Nakajima, Satoshi Hashimoto