Tuning module for a dual frequency PLL synthesized tuner

Details Tuning module for a dual frequency PLL synthesized tuner Tuning module for a dual frequency PLL synthesized tuner

1997-07-22

2000-12-19

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

4551821, 4551921, 455255, 455 673, H04B 126, H04B 1700, H04B 118

Patent

active

061636878

ABSTRACT:
A tuning module tunes a dual frequency PLL synthesized tuner to a desired channel frequency. The dual frequency PLL synthesized tuner includes a first PLL and a second PLL. The tuning module receives a carrier-to-noise ratio ("CNR") for each of one or more signals output from the dual frequency PLL synthesized tuner. The tuning module then generates first PLL parameters and second PLL parameters based on the CNRs and the desired channel frequency. Finally, the tuning module programs the first PLL with the first PLL parameters and programs the second PLL with the second PLL parameters.

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