NOISE REDUCTION IN DIGITIZER SYSTEM

摘要

A method for noise reduction in a digitizer (220), the digitizer (220) comprising a plurality of detecting elements (252-253) for detecting an electromagnetic signal at one of a number of predetermined frequencies; the method comprising: sampling at least two of said detecting elements substantially simultaneously to obtain outputs therefrom, and reducing the output on one of said two elements in accordance with the output on the other elements.