| 摘要 |
A user input system ( 40 ) in which an output from a cross-capacitance object sensing system ( 30 ) (also known as an electric field object sensing s system) is combined with an output from a touchscreen device ( 15 ). An output from the user input system ( 40 ) may comprise position information derived from the cross-capacitance object sensing system ( 30 ) and indications of touch events derived from the touchscreen device ( 15 ). Another possibility is for sensing signals (S<SUB>1</SUB>, S<SUB>2</SUB>, S<SUB>3</SUB>,S<SUB>4</SUB>) derived from the cross-capacitance object to sensing system ( 30 ) to be processed in combination with position information derived from the touchscreen device ( 15 ) to provide updated parameters (P<SUB>1</SUB>, P<SUB>2</SUB>, P<SUB>3</SUB>, P<SUB>4</SUB>) for an algorithm used to determine position information from further sensing signals (S<SUB>1</SUB>, S<SUB>2</SUB>, S<SUB>3</SUB>, S<SUB>4</SUB>) derived from the cross-capacitance object sensing system ( 30 ). |
