Abstract: A method and apparatus for performing channel equalization in a communication system may potentially reduce power consumption in channel equalizers of communication systems. A filtering circuit filters a received data sequence as a plurality of data values to be stored in a plurality of filter cells. Each filter cell may store at least one data value and may contain a coefficient related to the stored data value. A coefficient updating circuit may update the coefficients based on at least one parameter, and may compare the updated coefficients to a threshold. Based on the comparison, filter cells of selected coefficients may be selected for restoring the received data sequence to its original state.

Abstract: An improved dry cleaning machine and process which eliminates solvent emissions while simultaneously providing cost and quality benefits. The solvent filtration apparatus and process currently used in typical dry cleaning operations is eliminated and the solvent is instead separated based on the anticipated extent of contamination wherein the less clean solvent is cleaned via a distillation unit.