Locus smoothing method and pointing device utilising the same

Abstract

A pointing device with a locus smoothing function. The pointing device comprises a locus processing circuit receiving a digitized displacement and executing an accumulation procedure to generate an accumulated value of displacement, wherein when the accumulated value satisfies a preset condition, the accumulated value is output to a processing device for smoothing a locus of a pointer on a display device and a reset procedure is executed to reset the accumulated value.

1 . A pointing device with a locus smoothing function, comprising:
 a locus processing circuit receiving a digitized displacement and executing an accumulation procedure to generate an accumulated value of displacement   wherein when the accumulated value satisfies a preset condition, the accumulated value is output to a processing device for smoothing a locus of a pointer on a display device and a reset procedure is executed to reset the accumulated value.   
   
   
       2 - 3 . (canceled) 
   
   
       4 . The pointing device as claimed in  claim 1 , wherein the digitized displacement comprises a plurality of directional displacements having at least a first directional displacement and a second directional displacement, the accumulated value comprises a plurality of directional accumulated values having at least a first directional accumulated value and a second directional accumulated value, and the accumulation procedure accumulates the first directional displacement to yield the first directional accumulated value, and the second directional displacement to yield the second directional accumulated value. 
   
   
       5 . The pointing device as claimed in  claim 4 , wherein the preset condition requires that the first directional accumulated value is not equal to a first preset value and the second directional accumulated value is not equal to a second preset value. 
   
   
       6 - 7 . (canceled) 
   
   
       8 . The pointing device as claimed in  claim 4 , wherein the preset condition requires that the first directional accumulated value is not equal to a first preset value, the second directional accumulated value is not equal to a second preset value, and the first directional accumulated value is greater than a third preset value or the second directional accumulated value is greater than a fourth value, wherein when the first directional accumulated value is greater than a fifth preset value or the second directional accumulated value is greater than a sixth value, the accumulated value is output to the processing device for smoothing the locus of the pointer on the display device and the reset procedure is executed to reset the accumulated value. 
   
   
       9 - 10 . (canceled) 
   
   
       11 . A locus smoothing method, appropriate for a pointing device, comprising the steps of:
 receiving a digitized displacement and executing an accumulation procedure to generate an accumulated value of displacement; and   determining whether the accumulated value satisfies a preset condition, if so, the accumulated value is output to a processing device for smoothing a locus of a pointer on a display device and a reset procedure is executed to reset the accumulated value.   
   
   
       12 - 13 . (canceled) 
   
   
       14 . The locus smoothing method as claimed in  claim 11 , wherein the digitized displacement comprises a plurality of directional displacements having at least a first directional displacement and a second directional displacement, the accumulated value comprises a plurality of directional accumulated values having at least a first directional accumulated value and a second directional accumulated value, and the accumulation procedure accumulates the first directional displacement to yield the first directional accumulated value, and the second directional displacement to yield the second directional accumulated value. 
   
   
       15 . The locus smoothing method as claimed in  claim 14 , wherein the preset condition requires that the first directional accumulated value is not equal to a first preset value and the second directional accumulated value is not equal to a second preset value. 
   
   
       16 - 20 . (canceled)