| 摘要 |
A computer pointing device comprises a mouse shell ( 56 ) having a camera ( 88 ) and mouse buttons ( 70, 72 ), at the end of a second pantograph arm ( 40 ), attached to a first pantograph arm ( 18 ), in turn attached to a base clamp ( 10 ). In a first embodiment, the angle of the first pantograph arm ( 18 ) with the base clamp ( 10 ), the angle of the second pantograph arm ( 40 ) with the first pantograph arm ( 40 ), the angle of the mouse shell ( 56 ) with the second pantograph arm ( 40 ), and the lengths of each of the pantograph arms ( 18, 40 ) are all used by a logic processor ( 80 ) to calculate the position of the mouse shell ( 56 ) in Cartesian co-ordinates for communication to a host computer.
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