Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-09-05
2006-09-05
Nguyen, Lee (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C331S176000
Reexamination Certificate
active
07103338
ABSTRACT:
Method for acquiring frequency of a desired channel having a carrier frequency FMAIN, for a dynamic receiver frequency FMOBILE, from a starting frequency FSTART, in the presence of high power adjacent interfering channels, wherein the starting frequency FSTARTis shifted from FMAINby not more than a predetermined frequency gap ΔF, the method includes the steps of determining a first frequency boundary and a second frequency boundary, detecting channels within a filtering bandwidth, selecting a dominant channel from the detected channels, progressing the dynamic receiver frequency FMOBILEtowards the carrier frequency of the dominant channel, detecting when the step of progressing has exceeded one of the first frequency boundary and the second frequency boundary, restarting the step of detecting channels, from the other of the one of the first frequency boundary and the second frequency boundary, and repeating from the step of detecting channels.
REFERENCES:
patent: 4342007 (1982-07-01), Elliott
patent: 4715001 (1987-12-01), Deem et al.
patent: 5509034 (1996-04-01), Beukema
patent: 5740525 (1998-04-01), Spears
patent: 5933059 (1999-08-01), Asokan
Nguyen Lee
Pearl Cohen Zedek Latzer LLP
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