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SYSTEM AND METHOD FOR SMOOTHING SAMPLED DIGITAL SIGNALS

  • US 20080243207A1
  • Filed: 03/26/2007
  • Published: 10/02/2008
  • Est. Priority Date: 03/26/2007
  • Status: Active Grant
First Claim
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1. An implantable medical device (IMD) comprising:

  • a memory;

    an analog to digital converter (ADC) configured to receive an analog waveform and sample the waveform into digitized data;

    a smoothing filter configured to process the sampled signal and classify each data point into a first type or a second type and to apply a smoothing function to the first type of classified data and to retain a sampled valued for the second type of classified data;

    a predictive encoding module operatively coupled with the ADC to generate an encoded waveform data point for each of an equivalent data point from a subset of the digitized data; and

    an entropy encoding module operatively coupled with the predictive encoder and configured to selectively replace an encoded waveform data point with a codeword for that data point.

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