Personal handwriting verification
US5081686A · kind A · utility
1Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1991 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Mar 25, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The stress-wave activity produced by the interaction between a writing instrument and a surface during the generation of a given piece of handwriting on the surface is detected and stored. The stress-wave activity produced by a subsequent generation of the given piece of handwriting is then compared with that produced by the initial piece of handwriting in order to determine whether the initial and subsequent handwriting pieces have a common author.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.