Reducing noise during a gain change

Details Reducing noise during a gain change Reducing noise during a gain change

2006-12-08

2010-06-01

Nguyen, Lee (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C375S345000

Reexamination Certificate

active

07729675

ABSTRACT:
In one embodiment, the present invention includes a method for injecting a gain compensation value into a signal path of a receiver for a predetermined time when a change to a control value for an amplifier of the receiver occurs. This gain compensation value may be used to at least substantially remove a gain change caused by the change to the control value, improving audio performance by reducing or removing audible artifacts caused by the gain change.

REFERENCES:
patent: 4397040 (1983-08-01), Jandel et al.
patent: 5451948 (1995-09-01), Jekel
patent: 2003/0083031 (2003-05-01), Eriksson et al.
patent: 2003/0143967 (2003-07-01), Ciccarelli et al.
patent: 2007/0081615 (2007-04-01), Khoini-Poorfard et al.
Silicon Labs, “Si4730/31 Broadcast AM/FM Radio Receiver,” Feb. 14, 2007, pp. 1-2.
U.S. Appl. No. 11/636,021, filed Dec. 8, 2006, entitled “Providing Channel Filtering In An Automatic Frequency Control Path,” by Andrew W. Krone.

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