一种红外感存算一体像素突触电路及其控制方法
By integrating photodetector resistors, SRAM, and positive and negative weight transistors into the pixel unit, and combining them with the computing circuit, the problem of implementing negative weights in the hardware circuit was solved, improving the calculation accuracy and area utilization.
CN116089350BActive Publication Date: 2026-07-17UNIV OF ELECTRONICS SCI & TECH OF CHINA
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF ELECTRONICS SCI & TECH OF CHINA
- Filing Date
- 2022-12-02
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies make it difficult to implement negative weights in hardware circuits, leading to accuracy loss in high-precision applications and increased device cost and power consumption.
Method used
The photodetector resistor, SRAM, and positive and negative weight transistors are integrated into a single pixel unit. By combining the positive and negative weight transistors with external computing circuits, the multi-weighted privilege value calculation is achieved by utilizing the relationship between the transistor channel width-to-length ratio and the drain current.
Benefits of technology
It improves the area utilization of pixel units, reduces latency, and enables accurate calculation of multi-privilege values.
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Abstract
本发明属于半导体器件与集成电路技术领域，具体涉及一种红外感存算一体像素突触电路及其控制方法。本发明的电路中的单个像素突触单元包含对称的并联晶体管、感知光强的红外探测器电阻和部署神经网络权值的SRAM。本发明利用光电探测器容易与存储器实现器件级集成的特点，设计了基于红外探测器的感存算一体系统的像素阵列，利用正负对称的晶体管结构，与运算电路相结合，将感、存、算三个功能集成在了像素单元阵列中，实现正负权值的计算，提高了像素单元面积的利用率，降低了延时。还进一步地利用晶体管沟道宽长比与其漏极电流的关系，实现多比特权值。
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