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Automatic gain control system and related method

  • US 6,417,730 B1
  • Filed: 11/29/2000
  • Issued: 07/09/2002
  • Est. Priority Date: 11/29/2000
  • Status: Expired due to Term
First Claim
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1. An automatic gain control system comprising:

  • at least one variable-gain component having a controllable gain over a gain control range;

    a sensor for sensing an amplitude of a signal from said at least one variable-gain control component, said sensor having an operating window that is smaller than the gain control range of said at least one variable-gain component; and

    a controller responsive to said sensor for controlling said at least one variable-gain component according to coarse and fine gain values to set the amplitude of the signal within the operating window of said sensor, said controller implementing at least one coarse gain jump from a current coarse gain value to a new coarse gain value when said sensor indicates the amplitude is outside the operating window, and said controller further implementing movement to a fine gain value when said sensor indicates the amplitude is in the operating window.

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