Field-coupled pointing device

摘要: A pointing device comprises a mouse tablet having regular repetitive pattern of field sensitive pixels on the surface thereof, and including coupling elements movable across tablet, wherein establish position-dependent with pixels. Analysis yields motion direction motion. In one embodiment, are deployed in rows columns pair provided for sensing each axis. The elongated to be non-responsive axis non-interest, spaced apart provide phase-shifted output from which can determined. another ferrous pixel strips non-ferrous other axis, respective being adapted couple interest. generally coils connected oscillator circuits but some capacitors. expressed "gray" code derived outputs or based analysis switching between signals at ambiguity points.