Data input system

摘要

A data input system is described comprising a surface 10, pen 12 and a plurality of transducers 14. The surface has a structure 10 such that when the pen 12 is moved across the structure 10, vibration is generated. This is detected by the transducers and the position of the pen 12 on the surface 10 is calculated. In the preferred embodiment of the invention the structure of the surface 10 varies across the surface 10. This means vibration signal waveforms may be associated with specific regions of the surface making identification of the pen location easier.