Facsimile and static presentation processing – Facsimile – Facsimile measuring – testing – or calibrating
Patent
1993-06-16
1994-11-29
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Facsimile measuring, testing, or calibrating
379100, 375 39, H04M 100
Patent
active
053695003
ABSTRACT:
A system and method of determining the quality of a received facsimile signal is provided herein by measuring the received signal from a digital modem receiver 60. The end of a scan line is detected by looking for the special code of eleven logic 0s followed by a logic 1. The distance value between the position value of the received signal elements and the standard reference position is determined and if this distance exceeds a given threshold that is recorded and the percentage of those that exceed this threshold distance identifies the quality.
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McConnell, K. R., et al., FAX: Digital Facsimile Technology & Applications-Section 2.5 Compression Coding Overview, 1989 Artech House, Inc., Norwood, Mass., pp. 31-38.
Troullinos, G., et al., Theory, Algorithms and Implementations, vol. 2, Theory, Algorithms & Implementations, Texas Instruments, Digital Signal Processing Applications with the TMS320 Family, Mar., 1990, pp. 219-278.
Coles Sr. Edward L.
Donaldson Richard L.
Grant II Jerome
Troike Robert L.
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