Correction of errors in facsimile transmissions
US5727083A · kind A · utility
5Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1995 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Feb 23, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/409
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A technique for improving the image quality of facsimile transmissions by actually recovering data corrupted by channel impairments without retransmission. The technique is adaptable to operate with existing facsimile communications standards and does not require modification of transmitter equipment. A significant increase in image quality results. In many cases, otherwise partially illegible documents can be read by applying the image correction technique of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.