Sheet recognition system
US6449032B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jan 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F19/203
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system within a self-service deposit terminal is arranged to recognize different denominations of bank notes. The system scans each side of a deposited note and produces a diffraction pattern of first one side and then the other side of the note. The diffraction pattern is compared against reference matched spatial filters associated with different denominations that are loaded into a Vander Lugt optical correlator. If the diffraction pattern and the matched spatial filter match then a correlation dot is produced, and if this occurs for both sides of a note then a denomination value can be assigned to that note. Reference matched spatial filters for all denominations of notes to be expected are first produced on a recording system and stored in a storage device which the self-service deposit terminal can access.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.