Correction of errors in facsimile transmissions

Details Correction of errors in facsimile transmissions Correction of errors in facsimile transmissions

1995-02-23

1998-03-10

Coles, Sr., Edward L.

Image analysis

Image compression or coding

3582613, 358436, H04N 1415, H04N 100

Patent

active

057270830

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.

REFERENCES:
patent: 3927251 (1975-12-01), White et al.
patent: 4989088 (1991-01-01), Wada et al.
patent: 5031179 (1991-07-01), Yoshida et al.
patent: 5426652 (1995-06-01), Heiman
patent: 5533033 (1996-07-01), Ratner
"FAX: Digital Facsimile Technology and Applications" (Second Edition), Bodson, et al., 1992, pp. 19-92; pp. 145-167.

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