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Method for writing motion and trajectory recognition and writing apparatus and recognizing system

  • US 8,259,092 B2
  • Filed: 01/16/2009
  • Issued: 09/04/2012
  • Est. Priority Date: 05/27/2008
  • Status: Active Grant
First Claim
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1. A writing trajectory recognition method, comprising steps of:

  • acquiring a sound signal generated when a writing apparatus is contacting and moving on a writing surface;

    acquiring a continuous electronic signal generated due to motion variation of the writing apparatus;

    setting a threshold value;

    determining that the writing apparatus is on a writing status if the sound signal exceeds the threshold value, or determining that the writing apparatus is on a non-writing motion status if the sound signal is smaller than the threshold value;

    converting the sound signal into a recognition sound signal comprising at least a writing sound signal;

    comparing the recognition sound signal with the continuous electronic signal; and

    performing a recognition and composition process on a signal corresponding to a position of the writing sound signal in the continuous electronic signal.

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