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Pointing device having fingerprint image recognition function, fingerprint image recognition and pointing method, and method for providing portable terminal service using thereof

  • US 20050249386A1
  • Filed: 06/30/2004
  • Published: 11/10/2005
  • Est. Priority Date: 06/30/2003
  • Status: Abandoned Application
First Claim
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1. A pointing device having a fingerprint image recognition, comprising:

  • at least one or more fingerprint acquiring means for acquiring a fingerprint image of a finger surface depending on a predetermined cycle;

    a characteristic point extracting means for extracting at least one or more characteristic points from the acquired fingerprint image;

    a movement detecting means for calculating displacement data between characteristic points of the extracted fingerprint image to detect movement information of the fingerprint image;

    a mapping means for mapping the fingerprint image in an inner virtual image space depending on the movement information;

    a recognizing means for comparing a previously registered fingerprint image with the whole mapped fingerprint image when the entire size of the mapped fingerprint image reaches a previously set size and determining recognition on the fingerprint; and

    an operating means for receiving the displacement data from the movement detecting means and calculating a direction and a distance where a pointer is to move with the displacement data.

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