Xuejiang John Cheng, 616812 Saint Lawrence St, Plano, TX 75024
Xuejiang Cheng Phones & Addresses
6812 Saint Lawrence St, Plano, TX 75024 972-6181859
Justin, TX
Waxahachie, TX
Dallas, TX
Carbondale, IL
Richardson, TX
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Us Patents
Self-Adjusting Digital Filter For Smoothing Computer Mouse Movement
US Patent:
5661502, Aug 26, 1997
Filed:
Feb 16, 1996
Appl. No.:
8/602967
Inventors:
Xuejiang Cheng - Dallas TX
Assignee:
AST Research, Inc. - Irvine CA
International Classification:
C09G 508
US Classification:
345145
Abstract:
A self-adjusting digital filter for smoothing computer mouse movement is disclosed. In one embodiment, a user-selectable inertial constant is applied to all types of mouse movements regardless of whether the movement is fast or slow and corrected mouse position data, or coordinates, are computed using the current actual mouse coordinates and the previous corrected mouse coordinates as adjusted by the inertial constant. In an alternative embodiment, a speed sensitive inertial constant, the value of which is dependent upon the values of a user-selectable speed sensitivity constant, the inertial constant, and the speed of the mouse movement, is substituted for the inertial constant such that the amount of filtering that occurs is at least partially dependent on the speed of mouse movement.
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