The Concept of Four-Terminal Devices and Its Significance in the Implementation of Intelligent Integrated Circuits (Special Issue on Super Chip for Intelligent Integrated Systems)
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概要
- 論文の詳細を見る
It is demonstrated that the enhancement in the functional capability of an elemental transistor is quite essential in developing human-like intelligent electronic systems. For this purpose we have introduced the concept of four-terminal devices. Four-terminal devices have an additional dimension in the degree of freedom in controlling currents as compared to the three-terminal devices like bipolar and MOS transistors. The importance of the four-terminal device concept is demonstrated taking the neuron MOS transistor (abbreviated as neuMOS or νMOS) and its circuit applications as examples. We have found that any Boolean function can be realized by a two-stage configuration of νMOS inverters. In addition, the variable threshold nature of the device allows us to build real-time reconfigurable logic circuits (no floating gate charging effect is involved in varying the threshold). Based on the principle, we have developed Soft-Hardware Logic Circuits and Real-Time Rule-Variable Data Matching Circuits. A winner-take-all circuit which finds the largest signal by hardware parallel processing has been also developed. The circuit is applied to building an associative memory which is different from Hopfield network in both principle and operation. The hardware algorithm in which binary, multivalue, and analog operations are merged at a very device level is quite essential to establish intelligent information processing systems based on highly flexible, real-time programmable hardwares realized by four-terminal devices.
- 社団法人電子情報通信学会の論文
- 1994-07-25
著者
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Ohmi Tadahiro
Faculty Of Engineering Tohoku University
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Shibata Tadashi
Faculty Of Engineering Science Osaka University
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Ohmi Tadahiro
Faculty Of Engineering Tohoku Univ.
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