Patent ID: 6611251
Filing Date: 2003-08-26
Classification: G06F

Abstract:
A high resolution mouse structure comprising:a spherical castor; a first transmission wheel unit including a transmission wheel whose rotating shaft being equipped with a first frictional sleeve at a proper position thereof, a light shading wheel whose rotating shaft being equipped with a second frictional sleeve at a proper position hereof; a second transmission wheel unit including a transmission wheel whose rotating shaft being equipped with a first frictional sleeve at a proper position thereof, and a light shading wheel whose rotating shaft being equipped with a second frictional sleeve at a proper position thereof; several supporting posts for sustaining said first and said second transmission wheel units; and two infrared sensors; with the above structure said spherical castor is in contact with said first frictional sleeves of said first and said second transmission wheel units, the transmission wheel of said first transmission wheel unit is in contact with said second frictional sleeve of said first transmission wheel unit, and the transmission wheel of said second transmission wheel unit is in contact with said second frictional sleeve of said second transmission wheel unit, each of said two infrared sensor are respectively disposed adjacent each of said two light shading wheels belonging to said first and said second transmission wheel units respectively for detecting bright/dark change of light and delivering corresponding DPI signals.