On VLSI design of rank-order filtering using DCRAM architecture

Meng-Chun Lin, Lan-Rong Dung
2008 Integration  
This paper addresses on VLSI design of rank-order filtering (ROF) with a maskable memory for realtime speech and image processing applications. Based on a generic bit-sliced ROF algorithm, the proposed design uses a special-defined memory, called the dual-cell random-access memory (DCRAM), to realize major operations of ROF: threshold decomposition and polarization. Using the memory-oriented architecture, the proposed ROF processor can benefit from high flexibility, low cost and high speed. The
more » ... DCRAM can perform the bit-sliced read, partial write, and pipelined processing. The bit-sliced read and partial write are driven by maskable registers. With recursive execution of the bit-slicing read and partial write, the DCRAM can effectively realize ROF in terms of cost and speed. The proposed design has been implemented using TSMC 0.18 μm 1P6M technology. As shown in the result of physical implementation, the core size is 356.1 × 427.7μm 2 and the VLSI implementation of ROF can operate at 256 MHz for 1.8V supply.
doi:10.1016/j.vlsi.2007.05.002 pmid:19865599 pmcid:PMC2768317 fatcat:dftu6xtq75gxtmss7peox4l4ny