05167008 is referenced by 33 patents and cites 10 patents.

A plurality of neural circuits are connected in a neural network layer for generating their respective digital axonal responses to the same plurality of synapse input signals. Each neural circuit includes digital circuitry for approximating a sigmoidal response connected after respective circuitry for performing a weighted summation of the synapse input signals to generate a weighted summation result in digital form. In this digital circuitry the absolute value of the digital weighted summation result is first determined. Then, a window comparator determines into which of a plurality of amplitude ranges the absolute value of the weighted summation result falls. A digital intercept value and a digital slope value are selected in accordance with the range into which the absolute value of the weighted summation result falls. The absolute value of the digital weighted summation result is multiplied by the selected digital slope value to generate a digital product; and the digital intercept value is added to the digital product to generate an absolute value representation of a digital axonal response. The polarity of the weighted summation result is determined, and the same polarity is assigned to the absolute value representation of the digital axonal response, thereby to generate the digital axonal response.

Title
Digital circuitry for approximating sigmoidal response in a neural network layer
Application Number
628257
Publication Number
5167008
Application Date
August 29, 1991
Publication Date
November 24, 1992
Inventor
William E Engeler
Scotia
NY, US
Agent
Marvin Snyder
Assignee
General Electric Company
NY, US
IPC
G06F 15/18
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