Patents by Inventor Nobuaki Toyooka

Nobuaki Toyooka 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).

  • Positioning apparatus and navigation apparatus, and positioning method and navigation method
    Patent number: 6597985
    Abstract: There is disclosed a positioning apparatus which measures a current position of a movable body on the basis of a position information indicating a position of said movable body which was measured in the past by the use of a position measuring information transmitted from a positioning satellite. The positioning apparatus comprises a signal processing unit which detects a receiving condition of said position measuring information and a positioning calculating unit which ignores said position information which was obtained in the past when a precision of said position measuring information is decided to be deteriorated on the basis of a threshold value and measures said current position of said movable body by the use of said position measuring information which is received at the present time. The positioning calculating unit also controls said threshold value on the basis of said detected receiving condition.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: July 22, 2003
    Assignee: Pioneer Corporation
    Inventor: Nobuaki Toyooka
  • Positioning apparatus and navigation apparatus, and positioning method and navigation method
    Publication number: 20020169545
    Abstract: There is disclosed a positioning apparatus which measures a current position of a movable body on the basis of a position information indicating a position of said movable body which was measured in the past by the use of a position measuring information transmitted from a positioning satellite. The positioning apparatus comprises a signal processing unit which detects a receiving condition of said position measuring information and a positioning calculating unit which ignores said position information which was obtained in the past when a precision of said position measuring information is decided to be deteriorated on the basis of a threshold value and measures said current position of said movable body by the use of said position measuring information which is received at the present time. The positioning calculating unit also controls said threshold value on the basis of said detected receiving condition.
    Type: Application
    Filed: May 6, 2002
    Publication date: November 14, 2002
    Inventor: Nobuaki Toyooka