Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-06-17
2008-06-17
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S150000
Reexamination Certificate
active
07388898
ABSTRACT:
A communication device, able to establish synchronization of frequency and able to continuously track a carrier even if an oscillation frequency of an oscillator changes. The device changes the oscillation frequency of a reference frequency oscillator according to established protocols when the base station of the other party in communication changes by generating a frequency change signal for reporting that the base station has changed and the frequency is changed and outputting it to a control unit of a GPS baseband unit.
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Muto Takayasu
Takahashi Yoshihisa
Fan Chieh M.
Frommer William S.
Frommer & Lawrence & Haug LLP
Perilla Jason M.
Presson Thomas F.
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