Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-03-27
2007-03-27
Beamer, Temica (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S423000
Reexamination Certificate
active
09910092
ABSTRACT:
The present invention discloses methods, apparatuses, and systems for eliminating auto- and cross-correlation in weak signal CDMA systems, such as GPS systems. The invention uses parallel data paths that allow standard correlation of signals in parallel with verification of the lock signal to determine whether the system has locked onto the proper signal within the scanned signal window. The invention can be made with multiple CPUs, a single CPU with dual input modes, on multiple IC chips, or as a single IC chip solution for small, low cost reception, downconversion, correlation, and verification systems.
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Falk Henry D.
Norman Charles P.
Turetzky Gregory Bret
Beamer Temica
Contee Joy
SiRF Technology Inc.
The Eclipse Group LLP
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