PROCESSORS FOR GENERALIZED STACK FILTERS

New processor structures for generalized stack filters are proposed, T hey can be implemented using different numbers of Boolean function uni ts, The class of pipeline-parallel structures for generalized stack fi lters is simple and modular in structure, and suitable for VLSI implem entation. Coder and decoder networks are developed for the mutual tran sform of binary-weighted and unary-weighted codes as the thresholding and addition units of the processors. The area-time complexity A . T o f the proposed filters is O(k(3)) due to the feedback, instead of O(2( k)) for the threshold decomposition structure, where k is the number o f bits for sample representation.