MAGNETORESISTIVE SCANNING SYSTEM

摘要

A magnetoresistive scanning array (110) and system (118) are provided for scanning magnetic fields on an area of an object (58). The sensor array (110) comprises a plurality of independent magnetoresistive sensors held in a predetermined configuration. Several sensor array configurations are disclosed that are capable of generating two-dimensional data of the magnetic fields on an object. The system further comprises a processor device that is capable of analyzing and manipulating the data and performing other functions related to the system. Applications for the present invention include currency validation, document scanning, and read only memory devices.