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Processing for multi-channel signals

  • US 8,849,390 B2
  • Filed: 12/29/2009
  • Issued: 09/30/2014
  • Est. Priority Date: 12/29/2008
  • Status: Active Grant
First Claim
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1. A method for detecting anomalies in a multi-channel signal, the method comprising:

  • sampling the multi-channel signal over a time window, said multi-channel signal representing physiological signals derived from outputs of a plurality of electrodes positioned to acquire physiological signals from a patient, wherein each channel of the multi-channel signal corresponds to a different one of the plurality of electrodes;

    computing with a processor an anomaly metric for the multi-channel signal over the time window, wherein said computing an anomaly metric comprises;

    computing a condition number of the multi-channel signal over the time window; and

    adiusting the condition number based on a parameter of the multi-channel signal to generate a data condition number (DCN); and

    identifying the presence of an anomaly based on a magnitude of the anomaly metric, wherein said identifying the presence of an anomaly comprises comparing the magnitude of the DCN to at least one threshold.

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