Fingerprint classification arrangement
US4607384A · kind A · utility
46Cited by
7References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 1, 1984 |
| Grant date | Aug 19, 1986 |
| Priority date | — |
| Expiry date | May 1, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/37
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An arrangement for generating a classification code for a fingerprint having a pattern of ridges, the ridges having a plurality of reference features, which includes overlaying the intersection of a pair of cross-hairs at a first one of the reference features. A line is overlaid from a second one of the reference features to the first reference feature. The cross-hairs are oriented so that the line bisects a quadrant of the cross-hairs. The ridges crossed by predetermined portions of the cross-hairs are counted to generate the classification code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.