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Method and apparatus for reconstructing digitized distorted signals

  • US 8,228,218 B2
  • Filed: 10/29/2008
  • Issued: 07/24/2012
  • Est. Priority Date: 10/30/2007
  • Status: Expired due to Fees
First Claim
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1. A method for recovering an original analog signal from a sampling of the original analog signal, the method comprising:

  • obtaining the samples by applying a first distortion to the original analog signal forming a distorted original analog signal and then sampling the distorted original signal by a first digitizing process forming a representation of digitized samples of the original signal;

    calculating a signal representing an initial approximation of the original analog signal;

    reconstructing the original analog signal by;

    (a) applying a second distortion on the calculated signal forming a distorted calculated signal;

    wherein said second distortion is substantially equivalent to the first distortion;

    (b) sampling the distorted calculated signal by a second digitizing process;

    wherein said second digitizing process is substantially equivalent to the first digitizing process forming a representation of digitized samples of the distorted calculated signal;

    (c) comparing the representations by forming an error representation of the difference between the representations of the digitized samples of the original signal and the digitized samples of the calculated signal;

    if the representations are substantially equivalent then the calculated signal is considered to be substantially equivalent to the original signal and the calculated signal is output;

    otherwise the error representation is used to calculate a refined approximation of the original signal and the reconstructing of the original signal is performed iteratively using the refined calculated signal.

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