Gain control circuit and method of gain control

Details Gain control circuit and method of gain control Gain control circuit and method of gain control

2010-01-12

2011-10-04

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Nonlinear amplifying circuit

C327S561000, C330S271000, C330S278000, C455S234100, C375S345000

Reexamination Certificate

active

08030993

ABSTRACT:
The present invention relates to a gain control circuit, which detects an output signal of a front-end circuit to produce a detection signal. An operation unit performs an accumulation operation to the detection signal and thereby produces an operation signal. In addition, the operation unit also resets the operation unit according to a reset signal. A reset unit produces the reset signal for every predetermined interval of time. A control unit produces a control signal according to the operation signal and a first threshold value for controlling an output gain of the front-end circuit.

REFERENCES:
patent: 4225976 (1980-09-01), Osborne et al.
patent: 4546326 (1985-10-01), Van Uffelen et al.
patent: 5841820 (1998-11-01), Krishnamurthy et al.
patent: 7221226 (2007-05-01), Ogura
patent: 7504884 (2009-03-01), Ra et al.
patent: 7734267 (2010-06-01), Wagner
patent: 7782138 (2010-08-01), Dally et al.

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