Patent ID: 6169638
Filing Date: 2001-01-02
Classification: G11B,H03G

Abstract:
An automatic gain control circuit for automatic gain control of an input signal having a first signal region followed by a second signal region, which circuit comprises: a variable gain amplifier connected for receiving and amplifying said input signal; a signal source arrangement for deriving first and second signals respectively representing target values controlling the gains the variable amplifier applies to the first and second signal regions, a gain control loop connected to be responsive to the output of said amplifier and to the respective target values the signal source arrangement derives for said first and second signal regions for controlling the gains said amplifier applies to said input signal, and a target controller connected to be responsive to an indication the gain control loop derives of the gains the variable gain amplifier applies to each of said first and second signal regions for adjusting at least one of said target values the signal source arrangement derives.