Abstract
This chapter introduces a new multichannel filtering approach. The new filter, which is perfectly suitable for real time implementation, is used to remove impulsive noise and other impairment from color TV signals. There are various sources that can generate impulsive noise, such as man-made phenomena, car ignition systems, industrial machines in the vicinity of the receiver, switching transients in power lines, and various unprotected electric switches. In addition, natural phenomena also generate impulsive noise. Impulsive noise is frequently encountered during the transmission of TV signals through ultra-high frequency, very-high frequency, terrestrial microwave links, and FM satellite links. It is therefore important to develop a digital signal processing technique that can remove such image impairment in real-time and thus, guarantee the quality of service delivered to the consumer. Experimental results have been used to illustrate the discussion and to demonstrate the effectiveness of the method. The chapter outlines its hardware implementation that makes the proposed solution particularly attractive. With the advent of the all-digital TV system, such filters can lead to systems with accurate image reproduction fidelity despite any unforeseen transmission developments.
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