초록 ▼

A neural network utilizing the threshold characteristics of a semiconductor device as the various memory elements of the network. Each memory element comprises a complementary pair of MOSFETs in which the threshold voltage is adjusted as a function of the input voltage to the element. The network is

A neural network utilizing the threshold characteristics of a semiconductor device as the various memory elements of the network. Each memory element comprises a complementary pair of MOSFETs in which the threshold voltage is adjusted as a function of the input voltage to the element. The network is able to learn by example using a local learning algorithm. The network includes a series of output amplifiers in which the output is provided by the sum of the outputs of a series of learning elements coupled to the amplifier. The output of each learning element is the difference between the input signal to each learning element and an individual learning threshold at each input. The learning is accomplished by charge trapping in the insulator of each individual input MOSFET pair. The thresholds of each transistor automatically adjust to both the input and output voltages to learn the desired state. After input patterns have been learned by the network, the learning functions is set to zero so that the thresholds remain constant and the network will come to an equilibrium state under the influence of a test input pattern thereby providing, as an output, the learned pattern most closely resembling the test input pattern.

대표청구항 ▼

A neural network comprising; a matrix of a plurality of output electrodes intersecting with a plurality of input electrodes at intersecting regions, and a plurality of electronic elements coupling said output electrodes to said input electrodes at said intersecting regions; means interconnecting sai

A neural network comprising; a matrix of a plurality of output electrodes intersecting with a plurality of input electrodes at intersecting regions, and a plurality of electronic elements coupling said output electrodes to said input electrodes at said intersecting regions; means interconnecting said electronic elements such that input signals are continuously processed by said electronic elements; each of said electronic elements comprising an analog threshold device in which its output voltage increases substantially symmetrically in both the positive and negative directions from a threshold voltage as a function of its input voltage.