Spam fax filter
US7184160B2 · kind B2 · utility
5Cited by
23References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Jan 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/32021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A spam fax filter which has been configured in accordance with the present invention can include a fax transformation processor configured to transform rasterized fax images into non-rasterized representations of fax images. The spam fax filter further can include a knowledge base of known spam characteristics. Finally, the spam fax filter can include a comparator configured to compare non-rasterized representations of fax images produced by the fax transformation processor to the characteristics in the knowledge base to detect spam fax in the spam fax filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.