A tracking device is provided for tracking a position of the tracking device in relation to a surface. The tracking device has a first optical sensor to capture a primary image of the surface. A second optical sensor is provided to capture a secondary image of the surface. A processor evaluates the primary and secondary images to determine a movement of the tracking device in relation to the surface.
申请公布号
WO2008085384(A2)
申请公布日期
2008.07.17
申请号
WO2007US26067
申请日期
2007.12.19
申请人
MARVELL INTERNATIONAL LTD.;SIMMONS, ASHER;BLEDSOE, JAMES D.