System and method for split automatic gain control

Details System and method for split automatic gain control System and method for split automatic gain control

2001-09-14

2008-03-04

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Including amplitude or volume control

Automatic

C381S104000, C381S102000, C381S109000, C381S106000, C381S103000, C330S254000

Reexamination Certificate

active

07340069

ABSTRACT:
A system and method for automatically controlling gain in a signal chain are presented. A first signal is processed to produce a processed signal. A gain is adjustably applied to the processed signal using an automatic gain control (AGC) mechanism. A resulting signal is produced. The gain is adjusted based on the first signal. As such, even when a desired signal is not substantially present in the first signal, gain is not excessively applied to the processed signal.

REFERENCES:
patent: 4027264 (1977-05-01), Gutleber
patent: 4972164 (1990-11-01), Akagiri et al.
patent: 5170437 (1992-12-01), Strahm
patent: 6885752 (2005-04-01), Chabries et al.
patent: 6940987 (2005-09-01), Claesson
patent: 2002/0159608 (2002-10-01), Fado et al.
Applicant's admitted prior art (Figures 1A and 1B; p. 1, paragraph 0002-parge 3, paragraph 0007).
Applicant's admitted prior art, Figures 1A, 1B, paragraphs 0002-0008).
Applicant's Admitted Prior Art, Figures 1A-1B, paragraphs 0002-0008.

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