Compact optical pointing apparatus and method

Compact optical pointing apparatus and method

  • CN 1,732,507 B
  • Filed: 11/20/2003
  • Issued: 07/04/2012
  • Est. Priority Date: 12/30/2002
  • Status: Active Grant
First Claim
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1. demonstration indicating equipment comprises:

  • But be installed in the superficial makings sensing circuit in the pressing keys,Wherein, said superficial makings sensing circuit comprises by at least a sensor array of forming in a plurality of charge-coupled device (CCD)s and a plurality of thermal sensor,Wherein, said superficial makings sensing circuit further comprises with said sensor array and is connected with the sensor array focalizer of focusing with the detection texture,Wherein, but but said pressing keys comprises the sensing window that is positioned on the said pressing keys,Wherein, said sensor array focalizer is designed to make and focuses on the said sensor array from the light of 5 millimeters height of said sensing window top surface with interior emission;

    WithWith the surface texture movement detection circuit that the superficial makings sensing circuit is connected, be used for confirming the speed of superficial makings travel direction and motion, and produce the indication output data for showing, but said travel direction and irrelevant to pushing of carrying out of said pressing keys;

    Wherein, said surface texture movement detection circuit is confirmed at least a in speed and the direction of dermatoglyph motion through following operation;

    Revise at least one image stored in advance, to produce a plurality of candidate'"'"'s translation images, each candidate'"'"'s translation image has corresponding translational motion vector separately;

    And, carry out correlation computations through each image with first image of being resolved and a plurality of candidate'"'"'s translation images, producing the translation degree of correlation numerical value of a plurality of correspondences respectively, thereby compare;

    And, wherein, confirm that speed and at least a of direction of motion further comprises;

    Select the highest translation degree of correlation numerical value and corresponding translational motion vector separately is provided, to confirm the dermatoglyph travel direction.

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