Pulse or digital communications – Testing
Reexamination Certificate
2006-03-21
2006-03-21
Ghayour, Mohammed (Department: 2631)
Pulse or digital communications
Testing
C340S870180
Reexamination Certificate
active
07016403
ABSTRACT:
An apparatus and method for determining the quality of a digital signal. The incoming digital signal is sampled with a number n of samples per defined pulse width, where N is greater than or equal to one, using clock cycles. An edge detector detects the edge position of a pulse of the sampled digital signal and a counter counts the clock cycles between at least a first edge and a second edge detected by the edge detector. A deviation detector then compares the counted clock cycles with a prestored reference-value in order to provide a deviation value as a measure for the instantaneous quality of the digital signal. The deviation value is then fed to a rework unit that outputs a value that is a measure for the quality of the digital signal.
REFERENCES:
patent: 3987422 (1976-10-01), Yanagidaira et al.
patent: 5280637 (1994-01-01), Larosa et al.
patent: 5297164 (1994-03-01), McCabe
patent: 5566022 (1996-10-01), Segev
patent: 5719904 (1998-02-01), Kim
patent: 5761254 (1998-06-01), Behrin
patent: 5903605 (1999-05-01), Crittenden
patent: 6549598 (2003-04-01), Kumaki
patent: 6580775 (2003-06-01), Park et al.
patent: 6625231 (2003-09-01), Shen
patent: 0289384 (1988-11-01), None
patent: 53-15175 (1978-02-01), None
patent: 59-158657 (1984-09-01), None
patent: 59-171230 (1984-09-01), None
patent: 59-171233 (1984-09-01), None
patent: 62-12216 (1987-01-01), None
patent: 62-131637 (1987-06-01), None
patent: 05-75653 (1993-03-01), None
patent: 05-102953 (1993-04-01), None
patent: 05-235910 (1993-09-01), None
patent: 07-177151 (1995-07-01), None
patent: 2001-289892 (2001-10-01), None
patent: WO99/39216 (1999-08-01), None
“Design Considerations For Broadband Indoor Infrared Wireless Communication Systems”, Pakravan et al., International Journal of Wireless Information Networks, vol. 2, No. 4, 1995.
“Wireless Infrared Communication Links Using Multi-Beam Transmitters And Imaging Receivers”, Tang et al., IEEE International Conference on Communications, 1996.
“Angle Diversity For Nondirected Wireless Infrared Communication”, Carruthers et al., IEEE Transactions on Communications, 1998.
“Angle Diversity To Combat The Ambient Noise In Indoor Optical Wireless Communication Systems”, Valadas et al., International Journal Of Wireless Information Networks, vol. 4, No. 4, 1997.
Gfeller Fritz
Hirt Walter
Aker David
Flanagan Krista
Ghayour Mohammed
International Business Machines - Corporation
Karra Satheeoh K.
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