초록 ▼

A semiconductor neural network constructed in accordance with models of vital nerve cells has photosensitive elements as coupling elements providing degrees of coupling between neurons which are modeled vital nerve cells. The conductance values of the photosensitive elements can be set by light. Due

A semiconductor neural network constructed in accordance with models of vital nerve cells has photosensitive elements as coupling elements providing degrees of coupling between neurons which are modeled vital nerve cells. The conductance values of the photosensitive elements can be set by light. Due to such structure, not only the degrees of coupling of all the coupling elements can be simultaneously programmed but signal lines for programming the degrees of coupling can be eliminated in the network, whereby a semiconductor neural network having a high degree of integration can be implemented without additional complicating fabrication steps.

대표청구항 ▼

A semiconductor electronic circuit modeled on a vital nerve network, comprising: a plurality of data input lines to which input data are transmitted respectively; means provided in correspondence to respective said plurality of data input lines for amplifying potentials on corresponding said data in

A semiconductor electronic circuit modeled on a vital nerve network, comprising: a plurality of data input lines to which input data are transmitted respectively; means provided in correspondence to respective said plurality of data input lines for amplifying potentials on corresponding said data input lines, said amplifying means deriving complementary amplified signals; a plurality of data output lines arrayed in a direction intersecting with said plurality of data input lines, said plurality of data output lines including a plurality of data output line pairs, said data output line pairs being provided in correspondence to respective said amplifying means and receiving outputs from corresponding said amplifying means; and a plurality of coupling elements provided at crosspoints of said data input lines and said data output lines for transmitting signals corresponding to potential levels on corresponding said data output lines onto corresponding said data input lines, states of respective said coupling elements being optically settable, said coupling elements coupling corresponding said data output lines to corresponding said data input lines in accordance with set states.