Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Reexamination Certificate
2008-12-17
2010-10-19
Urban, Edward (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
C455S182200, C455S183100, C455S136000, C455S164100, C375S344000, C375S354000
Reexamination Certificate
active
07817976
ABSTRACT:
A method includes a foreground process and a background process. In the foreground process, an input signal is processed using a first reference signal to generate an output. A first frequency control signal is generated from the output. A frequency of the first reference signal is controlled based on the first frequency control signal. In the background process, a foreground processed signal is received from the foreground process. The foreground processed signal is processed using a second reference signal. A second frequency control signal is generated from the foreground processed signal. A frequency of the second reference signal is controlled based on the second frequency control signal so that the background processing step removes effects of the foreground controlling step.
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Kemenczy Zoltan
Simmons Sean B.
Chen Junpeng
Day Jones
Liang Robert C.
Pathiyal Krishna K.
Research In Motion Limited
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