| 摘要 |
A method of interpreting coded information carriers (1) is disclosed wherein a plurality of magnetic elements (2) supported by, or incorporated in, a substrate, are interrogated wherein the relative positions and/or physical dimensions of said magnetic elements represents the information encoded by said information carrier, the method comprising the steps of: i) applying an interrogation signal to each of the elements of said information carrier; ii) detecting the response of said magnetic elements to said interrogation signal; iii) processing the response detected in ii) so as to determine an estimate of a mathematical function which defines the relative velocity between the interrogating signal and each of the magnetic elements, from which mathematical function the relative positions and/or the relative physical dimensions can be determined.
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