C-Testable Motion Estimation Design for Video Coding Systems

This paper presents a c-testable motion estimation (CTME) design to efficiently detect the faults in process elements (PEs). The goal of the CTME design is to offer high reliability for video coding systems. The proposed CTME was carried out by Verilog HDL and synthesized with the TSMC 0.18 mum CMOS technology. Logic simulation results show that the proposed CTME guarantees 100% fault coverage with only 8 sets of test patterns. Design verification and comparisons also demonstrate that the area overhead of the proposed CTME is about 4.8% with little delay penalty.