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Analog-digital converter

An analog-to-digital converter and memristor technology, applied in analog-to-digital converters, analog-to-digital conversion, code conversion, etc., can solve the problems of fixed weights that cannot be changed, too large size, and difficulty in implementing Hopfeild network weights. , to achieve the effect of rich conductance and resistance state, easy realization and small size

Inactive Publication Date: 2019-07-30
NANJING UNIV OF POSTS & TELECOMM
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an analog-to-digital converter to solve the problems in the prior art such as the difficulty in realizing the weight value of Hopfeild network, the size is too large, and the weight value cannot be changed after being fixed.

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  • Analog-digital converter
  • Analog-digital converter
  • Analog-digital converter

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0027] Such as figure 1 As shown, the present invention includes three parts, which are memristor arrays A~D, comparators A~D, and amplifiers A~D. The memristor arrays A to D are connected to the comparators A to D in sequence, and the comparators A to D are connected to the amplifiers A to D in sequence.

[0028] Such as figure 2 As shown, each memristor array has the same structure and has the same row and column distribution. The memristor array is used to fix the weight, and the conductance value at the intersection of each memristor is determined by the weight value of the corresponding memristor, and the conductance represents The weight of each neuron. The setting of the weight value...

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Abstract

The invention discloses an analog-to-digital converter in the technical field of analog-to-digital conversion, and aims to solve the technical problems that the Hopfield network weight is difficult torealize, the size is too large, the weight is fixed and cannot be changed and the like in the prior art. The analog-to-digital converter comprises memristor arrays A-D, comparators A-D and amplifiersA-D. The memristor arrays A-D are used for determining the weight of a neuron / analog signal. The comparators A-D convert analog signals output by the memristor arrays A-D into digital signals. The amplifiers A-D are used for amplifying the digital signals output by the comparators A-D. According to the analog-to-digital converter provided by the invention, the weight of the memristor array can bechanged by changing the conductance of the memristor as required, and the change of the weight is easier to realize; the rich resistance state energy of the memristor provides more abundant conductive resistance states for the neural network; and the conversion precision is higher, and the size is smaller.

Description

technical field [0001] The invention belongs to the technical field of analog / digital conversion, and in particular relates to an analog-digital converter. Background technique [0002] The Hopfield network can convert analog signals into digital form, realize associative memory, signal estimation and combination optimization, similar to the method of human retina to realize first-pole signal processing. A simple analog-to-digital converter consists of a single layer of neurons that takes an analog input and produces a digital output; such neurons form an adaptive and distributed processing network. These neurons consist of a voltage comparator driving an analog converter or follower and a feedback resistor all connected between the analog output of the inverter or follower and the comparator. Reference and analog input voltages drive the neural network, and digital outputs are derived from comparators in the network. The Hopfield network is capable of learning by using an...

Claims

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Application Information

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IPC IPC(8): H03M1/12
CPCH03M1/1245
Inventor 王钰琪王东宇徐威陈义豪梁定康童祎
Owner NANJING UNIV OF POSTS & TELECOMM