Signature capture using electro-optical scanning
US5138140A · kind A · utility
129Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1990 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Aug 22, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04732
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Two-dimensional information such as a written signature can be captured and subsequently reconstructed by using an electro-optical scanner. A multi-row preamble code and a multi-row postamble code flank the signature, and each code has a row identifier for identifying which row is being scanned by a scan line emitted by the scanner, as well as start/stop data for identifying when each scan line traverses the boundaries of a space containing the signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.