Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2011-08-09
2011-08-09
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
C342S357290
Reexamination Certificate
active
07994970
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.
REFERENCES:
patent: 6618671 (2003-09-01), Dooley et al.
JAXA, QZSS project Industrial Collaboration Department, “Exchange opinions about collected comments and improvement”, 3rdQZSS User Meeting, Mar. 10, 2008.
Japan Aerospace Exploration Agency, “Quasi-Zenith Satellite User Interface Specifications (IS-QZSS):”, Nov. 30, 2007.
Ebata Tomoichi
Kawaguchi Takamasa
Ogasawara Hitoshi
Shimogaki Yutaka
Antonelli Terry Stout & Kraus LLP
Hitachi , Ltd.
Liu Harry
Tarcza Thomas H
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