Patent Number: 7,787,549

Title: Impulsive noise suppressor and method thereof

Abstract: An impulsive noise suppresser and method thereof is provided. The impulsive noise suppresser includes an automatic gain control unit, variable gain amplification unit, impulsive detection unit and impulsive suppression unit. The automatic gain control unit determines a gain value according to a PAPR. The variable gain amplification unit amplifies a reception signal by the gain value. The gain value is determined such that the amplified reception signal as unaffected by the impulsive noise can have an amplitude range smaller than a predetermined range. The impulsive detection unit is coupled to the variable gain amplification unit for determining whether the amplified reception signal is larger than a maximum value of the predetermined range and outputting an impulsive alarm signal if the reception signal is larger than the maximum value. The impulsive suppression unit suppresses the impulsive noise as receiving the impulsive alarm signal, and then outputs an output signal.

Inventors: Cheng; Shin-Shiuan (Sinshih Township, Tainan County, TW), Yang; Yen-Wen (Sinshih Township, Tainan County, TW), Tsai; Kuo-Shih (Sinshih Township, Tainan County, TW)

Assignee: Himax Technologies Limited

International Classification: H04K 1/10 (20060101); H04L 27/28 (20060101)

Expiration Date: 8/31/12018