Patent ID: 8428115

Claim:
An adaptive equalization system, comprising: an equalizer, a common-mode extraction buffer unit connected with said equalizer, a low-pass filter unit connected with said common-mode extraction buffer unit, a first energy compare unit connected with said low-pass filter unit, a second energy compare unit connected with said low-pass filter unit, a current comparator connected with said first and second energy compare units, and a digital control unit connected with said current comparator, wherein said common-mode extraction buffer unit transmits a full spectral energy of an input signal received by said equalizer to said first energy compare unit and said low-pass filter unit, and extracts a common-mode signal of said input signal to said second energy compare unit, said first energy compare unit outputs a current signal characterized by a high-frequency energy to said current comparator, said second energy compare unit outputs a current signal characterized by a low-frequency energy to said current comparator, said digital control unit outputs an equalization control signal for controlling a grade of said equalizer to said equalizer based on a compare result outputted by said current comparator.