The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2011
Filed:
Feb. 27, 2009
Takamasa Kawaguchi, Yokohama, JP;
Tomoichi Ebata, Machida, JP;
Yutaka Shimogaki, Hachiouji, JP;
Hitoshi Ogasawara, Kawasaki, JP;
Takamasa Kawaguchi, Yokohama, JP;
Tomoichi Ebata, Machida, JP;
Yutaka Shimogaki, Hachiouji, JP;
Hitoshi Ogasawara, Kawasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a positioning system comprising a position information transmitter that transmits a position information signal containing position information indicative of a position as a signal compatible with a satellite positioning signal transmitted from an artificial satellite and a communication terminal that when receiving the satellite positioning signal, finds a current position of the communication terminal by finding a position of the artificial satellite and that when receiving the position information signal, finds a current position of the communication terminal based on the position information, the position information transmitter transmits the position information signal containing a boundary flag that determines which of the satellite positioning signal or the position information signal each of correlators of the communication terminal is to receive, and the communication terminal sets which of the satellite positioning signal or the position information signal each of the correlators is to receive based on the boundary flag.