Patent Number: 7,133,793

Title: Magnetic calibration array

Abstract: A calibration system is provided for use in generating calibration data for calibrating an X-Y digitiser. The calibration system uses an alignment head having an array of magnetic field generators which are for alignment with the X-Y digitiser. Each of the magnetic field generators is individually drivable so that calibration data can be obtained for different positions on the X-Y digitiser corresponding to the positions of the magnetic field generators in the array. The resulting calibration data is then used to generate a correction map which is stored in the X-Y digitiser

Inventors: Ely; David (Waterbeach, GB), McCaughan; Gareth (Waterbeach, GB)

Assignee: Synaptics (UK) Limited

International Classification: G01C 19/00 (20060101)

Expiration Date: 2019-11-07 0:00:00