Patents by Inventor Takayasu Yamaguchi

Takayasu Yamaguchi 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: 8849307
    Abstract: A terminal number estimation device includes a first location information acquisition unit containing a terminal ID and an area ID identifying a location area of a mobile terminal, a second location information acquisition unit that acquires second location information containing a terminal ID and coordinate information of the mobile terminal, a correspondence information generation unit that generates correspondence information based on the area ID and the coordinate information using the first and the second location information, an area information acquisition unit that acquires area information containing an area ID and area range information about an area range of an area identified by the area ID, an in-area terminal number acquisition unit that acquires the number of in-area mobile terminals, and a terminal number correction unit that corrects the number of terminals based on the correspondence information and the area information.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: September 30, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masayuki Terada, Takayasu Yamaguchi, Ichiro Okajima
  • Publication number: 20130184008
    Abstract: A terminal number estimation device includes a first location information acquisition unit containing a terminal ID and an area ID identifying a location area of a mobile terminal, a second location information acquisition unit that acquires second location information containing a terminal ID and coordinate information of the mobile terminal, a correspondence information generation unit that generates correspondence information based on the area ID and the coordinate information using the first and the second location information, an area information acquisition unit that acquires area information containing an area ID and area range information about an area range of an area identified by the area ID, an in-area terminal number acquisition unit that acquires the number of in-area mobile terminals, and a terminal number correction unit that corrects the number of terminals based on the correspondence information and the area information.
    Type: Application
    Filed: February 10, 2012
    Publication date: July 18, 2013
    Applicant: NTT DOCOMO INC.
    Inventors: Masayuki Terada, Takayasu Yamaguchi, Ichiro Okajima
  • Publication number: 20130184006
    Abstract: An area range estimation device includes a first location information acquisition unit that acquires first location information containing terminal identification information identifying a mobile terminal and area identification information identifying a location area of the mobile terminal, a second location information acquisition unit that acquires second location information containing the terminal identification information and location information indicating a location of the mobile terminal, a correspondence information generation unit that generates correspondence information based on the area identification information and the location information by using the acquired first location information and second location information, and an area range estimation unit that estimates a range of an area identified by the area identification information based on the generated correspondence information.
    Type: Application
    Filed: February 10, 2012
    Publication date: July 18, 2013
    Applicant: NTT DOCOMO, INC.
    Inventors: Takayasu Yamaguchi, Masayuki Terada, Junichiro Hagiwara, Ichiro Okajima