Method for increasing resolution of mouse movement on screen

Abstract

A process for increasing resolution of mouse movement on computer screen comprises the steps of moving a mouse to cause two beams of light emitted from light emitting elements to be detected by photodetectors, converting the light into two sequential sinusoidal analog signals having a phase difference therebetween, activating an analog-to-digital converter (ADC) to perform an analog-to-digital conversion on the analog signals with respect to at least three predetermined references respectively, generating a series of integer in response to each analog signal passes two adjacent ones of the references, representing the series of integer as a step wave having a plurality of steps each representing an integer, and creating a coordinate comparison table with respect to the integers of the step wave, whereby there are at least six chances to determine change of coordinate with respect to a cursor moving on the screen during one movement cycle of the mouse.

Dependencies are inferred from the claim text.