Patents by Inventor Aki SAKAMOTO

Aki SAKAMOTO 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).

  • Global navigation satellite system, navigation terminal, navigation method and program
    Patent number: 11061143
    Abstract: In a satellite navigation system a navigation terminal continuously receives navigation signals from navigation satellites and continuously implements navigation calculations, thereby obtaining navigation calculation results, and executes in parallel: using clock offset values determined through the navigation calculations, calculates, in real time, changes in difference between time differences with regard to difference between time differences, which are differences between a clock offset value and a standard deviation value, which is the value of the standard deviation of fluctuation amounts of the clock offset values; determines, in real time, two navigation precision indices of the calculated navigation calculation results on the basis of each change in the calculated difference between time differences and standard deviation value; associates, in real time, the determined two navigation precision indices with the calculated navigation calculation results; and outputs, in real time, the navigation calcul
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: July 13, 2021
    Assignee: NEC CORPORATION
    Inventors: Hiroshi Soga, Yoshimi Ohshima, Tomoya Osawa, Aki Taniyama, Aki Sakamoto
  • GLOBAL NAVIGATION SATELLITE SYSTEM, NAVIGATION TERMINAL, NAVIGATION METHOD AND PROGRAM
    Publication number: 20190101653
    Abstract: In a satellite navigation system a navigation terminal continuously receives navigation signals from navigation satellites and continuously implements navigation calculations, thereby obtaining navigation calculation results, and executes in parallel: using clock offset values determined through the navigation calculations, calculates, in real time, changes in difference between time differences with regard to difference between time differences, which are differences between a clock offset value and a standard deviation value, which is the value of the standard deviation of fluctuation amounts of the clock offset values; determines, in real time, two navigation precision indices of the calculated navigation calculation results on the basis of each change in the calculated difference between time differences and standard deviation value; associates, in real time, the determined two navigation precision indices with the calculated navigation calculation results; and outputs, in real time, the navigation calcul
    Type: Application
    Filed: March 17, 2017
    Publication date: April 4, 2019
    Applicant: NEC Corporation
    Inventors: Hiroshi SOGA, Yoshimi OHSHIMA, Tomoya OSAWA, Aki TANIYAMA, Aki SAKAMOTO