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Integrated circuit device and neure

A technology of integrated circuits and neurons, applied in the field of neurons, can solve the problems of increasing the area occupied by weighting devices

Inactive Publication Date: 2003-10-08
异基因开发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such a neuron has the problem of increasing the area occupied by the weighting device on the circuit

Method used

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  • Integrated circuit device and neure
  • Integrated circuit device and neure
  • Integrated circuit device and neure

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Experimental program
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Embodiment Construction

[0050] The invention is described in detail below with reference to the accompanying drawings illustrating some embodiments.

[0051] It should be pointed out that as the weighting device of the neuron, that is, the variable resistance of the integrated circuit device of the present invention, the present invention uses an oxide having a perovskite structure of manganese, such as Pr 0.7 Ca 0.3 MnO 3 A variable resistor made of a thin film (hereinafter referred to as PCMO thin film), for example, has a resistance value that changes with an applied pulse voltage at room temperature and is nonvolatile, that is, it maintains the resistance when the power is turned off even when the power is turned off. features, as disclosed in US Patent No. 6,204,139B1.

[0052] The perovskite structure is the earliest by Perovskite (CaTiO 3 ) analysis, and imply a simple cubic structure as an ideal lattice.

[0053] image 3 It is a graph showing the resistance change of the oxide thin film...

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Abstract

The input signal is weighted by weighting means composed of variable resistors 11-1 to 11-n, each of which is made of an oxide having a perovskite structure containing The number of times the voltage is accumulated changes its resistance and is able to maintain its resistance in a non-volatile manner. Then, the weighted signal is input to the arithmetic unit 12 . The oxide film as each of the variable resistors 11 - 1 to 11 - n changes its resistance value according to the accumulated number of applied pulse voltages, and can maintain its resistance value in a nonvolatile manner even after the power supply is cut off. Thus, by changing the weighting coefficients according to the number of accumulations of applied pulse voltages, it is possible to realize neurons more similar to human nerves.

Description

technical field [0001] The present invention relates to a neuron simulating human nerves, which assigns weights one by one to input signals input from a plurality of input terminals, inputs the corresponding weighted input signals to an operation unit and performs an operation, and when the operation result exceeds a predetermined value , activate and output a predetermined output signal. The invention also relates to an integrated circuit device implementing the neuron. Background technique [0002] A neuron is a device that uses electronic circuits to simulate the nerves that make up tissues such as the human brain and eyes. Specifically, neurons are realized by replacing one cell body, one axon and multiple dendrites and synapses of a nerve with equivalent electronic parts or electronic circuits. [0003] figure 1 is a schematic diagram explaining the concept of a neuron. By using the weighting factor W 1 to W n respectively to have multiple inputs from the I 1 to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/10G06N3/063G11C11/54G11C13/00H01L49/00
CPCG06N3/063G11C11/54G11C13/0007G11C2213/31G06F7/00
Inventor 田尻雅之粟屋信义
Owner 异基因开发有限责任公司