Circuit method and device for transforming a digital signal into another digital signal, according to a non-linear function and neural network using such a method

摘要

Circuit method and device for transforming a digital signal (I) into another digital signal (O), according to a non-linear function (f), based on the use of a look-up table (LUT) containing numerical values of the said function (f) spaced a uniform distance ( delta ) apart. In order to reduce the dimensions of the look-up table, values which are very distant from one another are tabulated and intermediate values are calculated by using the closest tabulated value and by appending thereto correction elements, which are simple to calculate, on the basis of data contained in the look-up table. IMAGE