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Neural network computing circuit, chip and system

A technology for computing circuits and neural networks, applied in the field of neural networks, can solve problems such as high power consumption and large area occupied by conversion circuits, and achieve the effects of reducing power consumption, reducing occupied area, and reducing use

Active Publication Date: 2021-03-30
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method will result in a larger area occupied by the conversion circuit and higher power consumption

Method used

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  • Neural network computing circuit, chip and system
  • Neural network computing circuit, chip and system
  • Neural network computing circuit, chip and system

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the present application, the present application will be further described in detail below with reference to the accompanying drawings.

[0034] The transistors employed in all embodiments used in the present application may be the same device as the thin film transistor or field effect tube or other characteristics, and the transistors employed according to the example of the action of the present application are mainly a switching transistor. Since the source, the drain of the switching transistor used here is symmetrical, the source, the drain is interchangeable. In the present application embodiment, the source is referred to as the first stage, and the drain is referred to as the second stage. According to the shape of the transistor, the intermediate end of the transistor is specified, the signal input is the source, and the signal output is the drain. Further, the switching transistor employed in the...

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Abstract

The invention discloses a neural network computing circuit, chip and system, and belongs to the technical field of neural networks. The neural network calculation circuit comprises a first calculationunit, a second calculation unit and a processing circuit. The first calculation unit is used for obtaining a first current according to the input end voltage of the first calculation unit, the outputend voltage of the first calculation unit and a set first weight value. And the second calculation unit is used for obtaining a second current according to the input end voltage of the second calculation unit, the output end voltage of the second calculation unit and a set second weight value. The processing circuit is connected with the output end of the first calculation unit and the output endof the second calculation unit, and is used for obtaining a target current difference according to the first current and the second current, and obtaining an output voltage used for indicating a target calculation result according to the target current difference, wherein the target calculation result is used for indicating the calculation result of the neuron on the input data based on the weight value of the input data.

Description

Technical field [0001] The present application relates to the technical field of neural network, and in particular, there is a neural network computing circuit, a chip and system. Background technique [0002] Neural networks include a plurality of convolutional layers, and each convolution layer can be implemented by a neural network computing circuit. In practical applications, when the weight value of the negative value cannot be stored in the calculation unit when the resistance calculation unit is used in the calculation unit of the resistance random access memory, the PHASE-CHANGE MEMORY, PCM. Therefore, since the weight value of the negative value cannot be stored, Neural network computing circuits typically use positive weight calculation arrays and negative weight calculation arrays to achieve neural network calculations of the convolutional layer. During the calculation process, the positive weight calculation array outputs the difference between the output of the respo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N3/063
CPCG06N3/063Y02D10/00
Inventor 殷嘉浩许晓欣倪磊滨吕杭炳王侃文
Owner HUAWEI TECH CO LTD