Patents by Inventor Hideo Kawata

Hideo Kawata 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: 11381466
    Abstract: With a network design apparatus, a network design method, and a network design processing program, a network configuration is designed for a network in which a transfer apparatus is disposed at each of a plurality of communication hubs and the communication hubs are connected via a link by a link portion apparatus in the transfer apparatus. In design of a network configuration, a threshold value of an inter-end delay and the number of redundant paths are calculated for each line on the basis of topology information, line information, and design parameter information. A path candidate set is calculated for each line on the basis of the threshold value of the inter-end delay and the number of redundant paths.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: July 5, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Erina Takeshita, Hideo Kawata, Shinichi Yoshihara
  • Patent number: 11381465
    Abstract: A network design apparatus, a network design method, and a network design processing program design a network configuration for a network in which a transfer apparatus is disposed at each of a plurality of communication hubs, and the communication hubs are connected via a link by a link portion apparatus in the transfer apparatus. In design of the network configuration, the optimal path candidates of each of the lines minimizing a total cost value in the overall network is calculated. In the calculation of the optimal path candidates of each of the lines, only a path candidate of each of the lines can be selected, and a combination candidate of link portion apparatuses for each of the links is derived uniquely from the selected path candidate of each of the lines.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: July 5, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Erina Takeshita, Hideo Kawata, Shinichi Yoshihara
  • Patent number: 11336520
    Abstract: With a network design apparatus, a network design method, and a network design processing program, a network configuration is designed for a network in which a transfer apparatus is disposed at each of a plurality of communication hubs and the communication hubs are connected via a link by a link portion apparatus in the transfer apparatus. In design of a network configuration, an optimal combination candidate of a link portion apparatus for each link for minimizing a total cost value in an overall network is calculated on the basis of a combination candidate set of link portion apparatuses. The combination candidate set of the link portion apparatuses is configured using only combination candidates with a cost-effectiveness indicating a ratio of a total capacity to a total cost value of the link portion apparatus higher than a predetermined reference.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: May 17, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Erina Takeshita, Hideo Kawata, Shinichi Yoshihara
  • Publication number: 20220045751
    Abstract: An object is to provide a monitoring device capable of acquiring ONU-specific information and connection information even in the case of an optical communication system with the MC system, and enabling optical fiber cable switching work to be finished in a short time. The monitoring device according to the present invention is a monitoring device that monitors an optical communication system in which an OLT and an ONU are connected by a communication optical fiber, and includes: an optical receiver for receiving a signal beam transmitted by the ONU from the communication optical fiber; and an OAM frame analysis unit for extracting, from the signal beam received by the optical receiver, an OAM frame at a MEG level at which the ONU and the OLT are set as monitoring end points, and acquiring a transmission source address and a MEG-ID that identifies a MEG in the OAM frame.
    Type: Application
    Filed: December 3, 2019
    Publication date: February 10, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yoshitaka ENOMOTO, Hideo KAWATA, Kazuhisa FURUSAWA
  • Publication number: 20210075688
    Abstract: With a network design apparatus, a network design method, and a network design processing program, a network configuration is designed for a network in which a transfer apparatus is disposed at each of a plurality of communication hubs and the communication hubs are connected via a link by a link portion apparatus in the transfer apparatus. In design of a network configuration, a threshold value of an inter-end delay and the number of redundant paths are calculated for each line on the basis of topology information, line information, and design parameter information. A path candidate set is calculated for each line on the basis of the threshold value of the inter-end delay and the number of redundant paths.
    Type: Application
    Filed: February 28, 2019
    Publication date: March 11, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Erina TAKESHITA, Hideo KAWATA, Shinichi YOSHIHARA
  • Publication number: 20210075676
    Abstract: With a network design apparatus, a network design method, and a network design processing program, a network configuration is designed for a network in which a transfer apparatus is disposed at each of a plurality of communication hubs and the communication hubs are connected via a link by a link portion apparatus in the transfer apparatus. In design of a network configuration, an optimal combination candidate of a link portion apparatus for each link for minimizing a total cost value in an overall network is calculated on the basis of a combination candidate set of link portion apparatuses. The combination candidate set of the link portion apparatuses is configured using only combination candidates with a cost-effectiveness indicating a ratio of a total capacity to a total cost value of the link portion apparatus higher than a predetermined reference.
    Type: Application
    Filed: February 28, 2019
    Publication date: March 11, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Erina TAKESHITA, Hideo KAWATA, Shinichi YOSHIHARA
  • Publication number: 20210044486
    Abstract: A network design apparatus, a network design method, and a network design processing program design a network configuration for a network in which a transfer apparatus is disposed at each of a plurality of communication hubs, and the communication hubs are connected via a link by a link portion apparatus in the transfer apparatus. In design of the network configuration, the optimal path candidates of each of the lines minimizing a total cost value in the overall network is calculated. In the calculation of the optimal path candidates of each of the lines, only a path candidate of each of the lines can be selected, and a combination candidate of link portion apparatuses for each of the links is derived uniquely from the selected path candidate of each of the lines.
    Type: Application
    Filed: February 28, 2019
    Publication date: February 11, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Erina TAKESHITA, Hideo KAWATA, Shinichi YOSHIHARA
  • Publication number: 20210014125
    Abstract: With a network design apparatus, a network design method, and a network design processing program, a network configuration is designed for a network in which a transfer apparatus is disposed for each of a plurality of communication hubs and the communication hubs are connected via a link by a link portion apparatus in the transfer apparatus. In design of a network configuration, a maximum total capacity of a link portion apparatus is calculated, and a combination candidate set of the link portion apparatus including only combination candidates of which a total capacity is equal to or smaller than the maximum total capacity is calculated.
    Type: Application
    Filed: February 28, 2019
    Publication date: January 14, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Erina TAKESHITA, Hideo KAWATA, Shinichi YOSHIHARA
  • Publication number: 20200403879
    Abstract: With a network design apparatus, a network design method, and a network design processing program, a network configuration is designed for a network in which a transfer apparatus is disposed for each of a plurality of communication hubs and the communication hubs are connected via a link by a link portion apparatus in the transfer apparatus. In design of a network configuration, an optimal path candidate of each of the lines, an optimal link portion apparatus combination candidate of each link, and an optimal transfer apparatus combination candidate at each of the communication hubs minimizing a total cost value in an overall network are calculated on the basis of a path candidate set, an interface combination candidate set, and a combination candidate set of a transfer apparatus.
    Type: Application
    Filed: February 28, 2019
    Publication date: December 24, 2020
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Erina TAKESHITA, Shinichi YOSHIHARA, Hideo KAWATA
  • Patent number: 7869717
    Abstract: In the present invention, the extremely complicated setting and control and an extremely expensive optical component (wavelength locker) are not required, and optical output wavelength and optical output power can simply be set and controlled at a moderate price. At least one value for determining a dependence of the optical output wavelength on drive current and device temperature and at least one value for determining a dependence of the optical output power on drive current and device temperature in a light emitting device constituting first means 1 for emitting light are stored in fourth means 4.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: January 11, 2011
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Shingo Kawai, Kiyoshi Matsumoto, Hideo Kawata, Naoto Yoshimoto, Katsumi Iwatsuki
  • Publication number: 20090161708
    Abstract: In the present invention, the extremely complicated setting and control and an extremely expensive optical component (wavelength locker) are not required, and optical output wavelength and optical output power can simply be set and controlled at a moderate price. At least one value for determining a dependence of the optical output wavelength on drive current and device temperature and at least one value for determining a dependence of the optical output power on drive current and device temperature in a light emitting device constituting first means 1 for emitting light are stored in fourth means 4.
    Type: Application
    Filed: February 2, 2006
    Publication date: June 25, 2009
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shingo Kawai, Kiyoshi Matsumoto, Hideo Kawata, Naoto Yoshimoto, Katsumi Iwatsuki
  • Publication number: 20050076947
    Abstract: 1. The time of the sunrise 2. The time of the sunset 3. The time of the southing 4. The altitude in case of the southing (1) It understands a way of moving the day in the sun from 1, 2, 3, 4 above. (2) To decide the time to set and the position to set is made from (1) above. (3) The control board of “Solar-system Movable Mount” controls two mobiles of the turning-over part and the elastic part. It creates the agenda which controls the mobile of two pieces of the above based on the material which is (2). (4) The power of the control board uses the special solar cell of the control board. (5) When the above-mentioned solar cell doesn't generate electricity, the above-mentioned control board doesn't operate. Therefore, two mobiles of the above doesn't move.
    Type: Application
    Filed: January 29, 2004
    Publication date: April 14, 2005
    Inventor: Hideo Kawata