Dynamic bandwidth filter for an FM receiver

Details Dynamic bandwidth filter for an FM receiver Dynamic bandwidth filter for an FM receiver

2007-05-22

2010-06-01

Nguyen, Lee (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Modulation distortion or cross talk correction or elimination

C455S306000, C455S307000, C375S350000

Reexamination Certificate

active

07729679

ABSTRACT:
In an apparatus, method, and system for reducing interference with an input signal to an FM receiver, a plurality of inputs are filtered by a first stage of filters. The outputs are received by an interference detector and further processed by a second filtering stage, an energy calculation stage, and a comparator stage. A switch, responsive to the outputs of the comparator stage, may output one of the first stage filter outputs based on a first set of comparator outputs and may output an interpolated value determined by the first stage filter outputs and based on a second set of comparator outputs.

REFERENCES:
patent: 5155862 (1992-10-01), Hansen
patent: 6658245 (2003-12-01), Li et al.
patent: 6934387 (2005-08-01), Kim
patent: 6957054 (2005-10-01), Li

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