Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-04-24
2007-04-24
Corrielus, Jean B. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S147000, C375S148000, C375S149000, C375S130000
Reexamination Certificate
active
10373550
ABSTRACT:
Disclosed is a GPS receiving apparatus including a synchronous acquisition unit and a synchronous hold unit. The synchronous acquisition unit detects a correlation between a spread code of a received signal from a GPS satellite and a spread code provided by the apparatus in order to detect a phase of the spread code of the received signal and a carrier frequency of the received signal. The synchronous hold unit has a plurality of channels and allocates one of the channels to one of a plurality of GPS satellites. The synchronous hold unit also establishes initial values based on the spread code phase of the received signal following detection by the synchronous acquisition unit as well as on the likewise-detected carrier frequency of the received signal, before starting synchronous hold of the spread code and the carrier frequency regarding the signal from the GPS satellite in question while decoding the signal from the GPS satellite.
REFERENCES:
patent: 4998111 (1991-03-01), Ma et al.
patent: 5101416 (1992-03-01), Fenton et al.
patent: 5329549 (1994-07-01), Kawasaki
patent: 5410750 (1995-04-01), Cantwell et al.
patent: 6151353 (2000-11-01), Harrison et al.
patent: 6249253 (2001-06-01), Nielsen et al.
patent: 6429812 (2002-08-01), Hoffberg
patent: 0 488 739 (1992-06-01), None
patent: 0 718 998 (1996-06-01), None
patent: WO 01 86318 (2001-11-01), None
patent: WO 02 13476 (2002-02-01), None
Sanmiya Jason
Takada Masayuki
Takahashi Hideki
Tanaka Katsuyuki
Teranishi Koichiro
Bolourchi Nader
Corrielus Jean B.
Frommer William S.
Frommer & Lawrence & Haug LLP
Presson Thomas F.
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