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Signal processing method and device

  • US 20040080751A1
  • Filed: 04/11/2003
  • Published: 04/29/2004
  • Est. Priority Date: 12/28/1999
  • Status: Active Grant
First Claim
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1. A signal processing method comprising:

  • receiving a signal obtained from an object as an input signal;

    generating a time lag signal from the input signal;

    calculating a difference between the input signal and the time lag signal; and

    detecting the generation of the difference so as to feature a portion of the object at a position where the difference is generated.

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