Patent ID: 8046396
Filing Date: 2011-10-25
Classification: G06F,H03M

Abstract:
1. A method of transforming an electronic analog signal into an interpolated, digital signal, comprising: (A) discretely sampling the electronic analog signal to produce a series of analog samples; (B) converting the series of analog samples into a series of digital samples representative of the series of analog samples; (C) constructing a mathematical model that approximately describes the series of digital samples; (D) subtracting the mathematical model from the series of digital samples, to yield a residue signal; (E) computing a DFT (Discrete Fourier Transform) of the residue signal; (F) zero-padding the DFT to yield a padded residue signal; (G) computing an inverse DFT of the padded residue signal to produce an interpolated residue signal; and (H) adding the interpolated residue signal to the mathematical model to produce the interpolated, digital signal.