Method and apparatus for frequency control

Details Method and apparatus for frequency control Method and apparatus for frequency control

1997-08-07

2000-06-27

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

455255, H04B 7185

Patent

active

06081702&

ABSTRACT:
The invention concerns a method and apparatus for providing frequency control of an oscillator circuit. The apparatus includes an oscillator (9), an error estimator (10) f.sub.r producing a set of error estimates and a median filter (11) for producing a median value from the set of estimates. The median filter (11) is connected to the oscillator (9) which is responsive to the median value to vary its frequency thereby reducing the error.

REFERENCES:
patent: 4921467 (1990-05-01), Lax
patent: 5115515 (1992-05-01), Yamamoto et al.
patent: 5170492 (1992-12-01), Moller et al.
patent: 5574984 (1996-11-01), Reed et al.
patent: 5748682 (1998-05-01), Mobin

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