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Xuejiang John Cheng, 626812 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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