Automatic gain control device and automatic gain control method

Details Automatic gain control device and automatic gain control method Automatic gain control device and automatic gain control method

2005-08-16

2005-08-16

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S129000

Reexamination Certificate

active

06930553

ABSTRACT:
An automatic gain control device comprises a variable gain amplifier (VGA) for increasing the amplitude of an input analog signal that has a plurality of CAPA having different signal characteristics; an A/D converter for sampling the output from the VGA to convert it into a digital signal; a signal discriminator for detecting the signal length of the digital signal; an amplitude information extractor for extracting amplitude information of a digital signal having a desired signal length on the basis of the detected signal length and a control gate signal supplied from the outside; an AGC controller for generating a control signal for controlling the VGA on the basis of the amplitude information; and a D/A converter for converting the control signal into an analog signal to be output to the VGA.

REFERENCES:
patent: 6392479 (2002-05-01), Miura
patent: 6608524 (2003-08-01), Kawabe et al.
patent: 6708025 (2004-03-01), Iwata et al.
patent: 04330811 (1992-11-01), None

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