Engineering

A CMOS modular high-speed current-mode 2-input Winner-Take-All (2-WTA) circuit for use in VLSI tree-structure WTA networks is described. The classification speed of the design is not input pattern dependent, but is a function of the value of the largest current input only. The complexity of the proposed WTA is O(M), but unlike other architectures, mismatch errors accumulate at a rate proportional to log 2M. Since for large M this is a slowly increasing function of M, the proposed arrangement is well suited to large WTA systems. Simulations show that the proposed circuit can resolve input currents differing by less than 1μA with only a small loss of operating speed. Detailed simulations and measured results of a single 2-WTA cell and of a complete 8-input tree WTA are presented

... 1996, pp. 155–157. [2] C. Toumazou, FJ Lidgey, and DG Haigh, “Analog IC design: The curent-mode approach,” in Current-Conveyor Theory and Practice. London, UK: Peregrinus, 1990, Ch. ... Andreas Demosthenous, Sean Smedley, and John Taylor ...

A CMOS modular high-speed current-mode 2-input Winner-Take-All (2-WTA) circuit for use in VLSI tree-structure WTA networks is described. The classification speed of the design is not input pattern dependent, but is a function of the value of the largest current input only. Simulations show that the new circuit can resolve input currents differing by less than 1μA with a negligible loss of operating speed. Detailed simulations and preliminary measured results of a single WTA cell and of a complete 8-input tree WTA network are presented.

This paper describes a very flexible, high-speed current-mode winner-take-all network (WTA) for use in artificial neural systems. Since the WTA is based on a network of identical current switching cells requiring only adjacent transistor matching, it is particularly suited to use in large systems. In addition, since the network is based on a tree structure, very little space is occupied

Current opinion suggests that language is a cognitive process in which different modalities such as perceptual entities, communicative intentions and speech are inextricably linked. As such, the process of child language acquisition is one in which the child learns to decipher this inextricability and to acquire language capabilities starting from gesturing, followed by language dominated by single word utterances, through