| 摘要 |
A touch screen apparatus comprises a configurable clock generator to generate a clock signal having a configurable clock frequency, the generator having an oscillator, a phase locked loop coupled to the oscillator and a configurable frequency divider coupled to the phase locked loop; a sinusoid generator 720 coupled to a plurality of electrodes 708 of a touch screen and coupled to the configurable clock generator, the sinusoid generator adapted to generate a sinusoidal signal having a frequency based on the clock frequency; a plurality of sensors 716 coupled to the plurality of electrodes to generate sensed signals indicative of signals flowing from each electrode; and a touch position calculator 732 coupled to the plurality of sensors adapted to generate an estimate of a touch position based on the sensed signals. A gaming apparatus includes the touch screen apparatus for player input. |
