Method for weight control and information integration by utilizing time encoding

A technology of information integration and time encoding, applied in the field of neuron circuits

Inactive Publication Date: 2010-10-13
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Indeed, for most neurons, the degree of depolarization determines the overall spiking and firing probability, and the change of membrane potential and the change of firing rate take time and cannot be completed immediately

Method used

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  • Method for weight control and information integration by utilizing time encoding
  • Method for weight control and information integration by utilizing time encoding
  • Method for weight control and information integration by utilizing time encoding

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Embodiment

[0044] At the input end of the pulse-coupled neuron circuit, different signal combinations are used to open a parallel set of P-type MOS transistors with different combinations of width-to-length ratios, and the complementary N-type MOS transistors with fixed width-to-length ratios form an input stage inversion device structure. The input signal combination is different, the noise margin of the inverter will change, thus affecting the pulse train output frequency of the pulse coupling circuit. The combination of different width-to-length ratios of the P-type MOS transistors at the input end is related to the weight of the pulse-coupled neuron circuit. It is certain that the greater the noise margin of the input stage inverter, the greater the coupling weight of the pulse-coupled neuron circuit.

[0045] like Figure 5 As shown, the ratio of the width to length (W / L) of a group of parallel-connected PMOS transistors and a series-connected NMOS transistor in the dendritic circu...

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Abstract

The invention discloses a method for weight control and information integration by utilizing time encoding, which comprises the following steps: utilizing a dendritic circuit to control the spatial distribution of weight; utilizing the dendritic circuit to realize the corresponding relationship between characteristic parameters and the weight; and utilizing the dendritic circuit to control the time distribution of the weight. The invention utilizes the organic combination of input signals distributed in time and space to realize the dynamic distribution control of the weight, utilizes the noise margin characteristics of a CMOS inverter to change the output pulse frequency of a neuron circuit, so that the digital signals increase simulated change parameter. The invention helps to understand and simulate information processing way of biological neurons.

Description

technical field [0001] The invention relates to the technical field of neuron circuits, in particular to a method for controlling weight and information integration by using time coding. Background technique [0002] Biological neurons have the function of sensing external stimulus signals from the cell body, and can receive nerve impulses from the axon terminals of other nerve cells through synapses. Nerve impulses originate from action potentials, which form in the axon mound as a result of the combined action of all synapses. The role of synapses on nerve impulses is realized through the integration function of biological neurons. This information integration function is divided into time integration function and space integration function. Impulse is processed comprehensively. Temporal integration means that biological neurons have the ability to comprehensively process nerve impulses from other biological neurons at the same synapse at different times. Spatial integr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/094
Inventor 韩伟华熊莹张严波赵凯杨富华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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