Patent ID: 7419088

Claim:
A banknote serial number processing method comprising: a banknote serial number recording step which comprises converting a banknote serial number into an image signal by using an image capture device; a banknote serial number recording decoding which comprises processing the banknote serial number image signal by filtration, analogue-digital conversion and synchronizing separation and storing the processed image signal in an image memory unit; banknote serial number digital signal processing step, which involves stored image recognition processing, identifying a bundle code and storing the banknote serial number and the bundle code in digital memory; a reading step for a banknote serial number to be compared, involving sorting out a corresponding banknote serial number from a bundle code to be compared, then storing the sorted out serial number in a reading-in memory unit; a comparison step involving a comparison of the banknote serial number to be compared and a newly recorded banknote serial number comprising comparing the newly recorded banknote serial number with banknote serial numbers in memory in the reading-in memory until a same serial number coincides and activating an alarm relative to a same serial number coinciding, and wherein the banknote serial numbers in memory are for non-counterfeit banknotes obtained unlawfully.