Patents by Inventor Osamu Muta

Osamu Muta 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).

  • Packet communication system, emission control apparatus, antenna control method and computer program
    Patent number: 8937986
    Abstract: A packet communication system etc., is proposed, which can automatically adjusting the antenna directionality without modifying a wireless interface of a wireless packet forwarding device even if it involves fluctuation in the packet transmission timing due to CSMA/CA etc. An interference evasion unit involves fluctuation in packet transmission timing due to CSMA/CA. A radio emission device can control the emissive direction and/or emission intensity. A packet generation unit adjusts packet features other than its contents (e.g., packet length, transmission intensity) based on a switching sequence for specifying the emissive direction and/or emissive intensity, and generate a switching control packet. An emission control unit measures the switching control packet feature other than its contents, and identifies at least one bit as antenna control information.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: January 20, 2015
    Assignee: Kyushu University, National University Corporation
    Inventors: Hiroshi Furukawa, Osamu Muta
  • PACKET COMMUNICATION SYSTEM, EMISSION CONTROL APPARATUS, ANTENNA CONTROL METHOD AND COMPUTER PROGRAM
    Publication number: 20130272345
    Abstract: A packet communication system etc., is proposed, which can automatically adjusting the antenna directionality without modifying a wireless interface of a wireless packet forwarding device even if it involves fluctuation in the packet transmission timing due to CSMA/CA etc. An interference evasion unit involves fluctuation in packet transmission timing due to CSMA/CA. A radio emission device can control the emissive direction and/or emission intensity. A packet generation unit adjusts packet features other than its contents (e.g., packet length, transmission intensity) based on a switching sequence for specifying the emissive direction and/or emissive intensity, and generate a switching control packet. An emission control unit measures the switching control packet feature other than its contents, and identifies at least one bit as antenna control information.
    Type: Application
    Filed: September 7, 2011
    Publication date: October 17, 2013
    Applicant: Kyushu University, National University Corporation
    Inventors: Hiroshi Furukawa, Osamu Muta