Personal handwriting verification
US5029219A · kind A · utility
6Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1985 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Apr 23, 2005 |
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.