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Apparatus for validating currency items, and method of configuring such apparatus

  • US 20030121754A1
  • Filed: 12/23/2002
  • Published: 07/03/2003
  • Est. Priority Date: 12/28/2001
  • Status: Active Grant
First Claim
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1. A method of testing a currency article, the method comprising taking multiple measurements of the article and applying acceptance criteria to digital representations of the measurements in order to determine whether the article belongs to a predetermined target class, characterised in that at least one of the digital representations is derived by processing a first digital value representative of the measurement using a plurality of calibration factors derived by a calibration operation in order to obtain a second digital value forming said digital representation.

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