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    • 3. 发明授权
    • Voltage-current conversion circuit employing MOS transistor cells as
synapses of neural network
    • 采用MOS晶体管电池的电压 - 电流转换电路作为神经网络的突触
    • US5704014A
    • 1997-12-30
    • US828063
    • 1992-01-30
    • Giulio MarottaEros Pasero
    • Giulio MarottaEros Pasero
    • G06N3/063H03K19/0948G06F15/18
    • G06N3/0635
    • A cell of MOS transistors for converting a voltage into a current for forming synapses of neural nets, in particular for converting the difference between an input voltage (V.sub.IN) and a voltage (V.sub.W) for weighting the synapse into a current, realized by means of a differential stage comprising a first transistor (M1) operating as a current generator, in which a first and a second branch in parallel end, which branches respectively comprise a second (M2) and a third (M3) push-pull connected transistor, to the gate regions of which the input voltage (V.sub.IN) and the voltage (V.sub.W) for weighting the synapse, and to which a fourth (M4) and a fifth (M5) transistor are respectively connected in series, in which the fourth (M4) and the fifth (M5) transistor are P-MOS transistors having their gate regions short-circuited and said fourth (M4) P-MOS transistor is connected as a diode, and in which the output current (I.sub.OUT) is drawn from the node (N) that connects said third (M3) and said fifth (M5) transistors inserted in series in said second branch of the circuit and a capacitor (c) is connected to the gate region of said third (M3) transistor to store the voltage (V.sub.W) for weighting the synapse applied to the circuit.
    • 用于将电压转换成用于形成神经网络突触的电流的MOS晶体管的单元,特别是用于将用于加权突触的输入电压(VIN)和电压(VW)之间的差值转换成电流,所述电压通过 差动级包括作为电流发生器工作的第一晶体管(M1),其中并联端的第一和第二支路分别分别包括第二(M2)和第三(M3)推挽连接的晶体管,至 其输入电压(VIN)和用于加权突触的电压(VW)的栅极区域和第四(M4)和第五(M5)晶体管分别串联连接的栅极区域,其中第四(M4) 并且第五(M5)晶体管是其栅极区短路的P-MOS晶体管,并且所述第四(M4)P-MOS晶体管作为二极管连接,并且其中输出电流(IOUT)从节点 N),其连接所述第三(M3)和所述第五(M5)转换器 串联插入电路的所述第二分支的电阻器和电容器(c)连接到所述第三(M3)晶体管的栅极区域,以存储用于加权施加到电路的突触的电压(VW)。