Patent ID: 6529150
Filing Date: 2003-03-04
Classification: H03M

Abstract:
A method of converting an analog signal to a digital signal, comprising:(a) filtering the analog signal to the range 0&lE;fx&lE;fB; (b) sampling the filtered signal at a rate fS>>fN, where fS is the sampling frequency, fN=2fx is the Nyquist frequency of the sampled signal, and fB&lE;fS/2 is the constrained signal bandwidth: (c) converting the sampled signal to an optical sampled signal; (d) converting the optical sampled signal from a temporal signal to a spatial signal; (e) illuminating a smart pixel array with the spatial signal; (f) processing the spatial signal with an error diffusion neural network to produce a 2-D binary image; and (g) averaging rows and columns of the 2-D binary image using a digital low pass filter and a decimation circuit.