Automatic gain and level control circuit and method

Details Automatic gain and level control circuit and method Automatic gain and level control circuit and method

1994-07-07

1995-12-19

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327331, 327332, 327307, 330278, 348255, G05F 144

Patent

active

054771838

ABSTRACT:
An automatic gain and level control method and circuit. In general, the inventive method includes the steps of detecting the DC level of a signal and providing a first signal in response thereto and detecting the AC amplitude or gain of the signal and providing a second signal in response thereto. A DC level error signal is generated in response to the first signal. An AC amplitude error signal is generated in response to the second signal. The DC level of the signal is corrected in response to the DC level error signal. The AC amplitude of the signal is corrected in response to the AC amplitude error signal.

REFERENCES:
patent: 3699948 (1972-10-01), Ota et al.
patent: 4103243 (1978-07-01), Orban
patent: 4525741 (1985-06-01), Chahal et al.
patent: 4625240 (1986-11-01), Yablonski et al.
patent: 5218320 (1993-06-01), Albouy et al.

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