Local asymmetric propagation stopper circuit for asynchronous binary wave computing

In this paper, we introduce an efficient method to control the propagation stopping condition locally for asynchronous binary propagation networks. Additional switches are introduced to the Wired-OR pull-down path branches, where the switches are controlled by the PE outputs from the neighborhood. An example for a 1-D case for object center pixel extraction is given with simulation results for asymmetric neighborhood connection topology for the new stopper circuitry. Furthermore, 2-D operation is discussed based on Matlab simulations, showing that the proposed method can currently be utilized in 2-D successfully for certain BLOB geometries.