System for measuring an eyewidth of a data signal in an...

Details System for measuring an eyewidth of a data signal in an... System for measuring an eyewidth of a data signal in an...

2011-01-11

2011-01-11

Wang, Ted M (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S355000, C375S370000, C375S371000

Reexamination Certificate

active

07869544

ABSTRACT:
An eyewidth of a data signal is determined by steps including: (a) recovering a phase of a clock from a data signal as a sampling clock; (b) shifting the phase of the sampling clock away from the first phase by a count multiplied by predetermined phase amount; (c) sampling the data signal with the shifted sampling clock phase to obtain sample data; d) determining whether the sample data contains error; (e) when the sample data does not contain error, recovering the phase of the clock from the data signal again for use as the first phase of the sampling clock, increasing the count value and repeating steps (b) through (e); and f) when the sample data contains error, determining the eyewidth based on the last shifted phase of the sampling clock prior to determining that the sample data contains error.

REFERENCES:
patent: 7142623 (2006-11-01), Sorna
patent: 7184502 (2007-02-01), Engl et al.
patent: 7206368 (2007-04-01), Engel et al.
patent: 7225370 (2007-05-01), Chow et al.
patent: 7315598 (2008-01-01), Lee et al.
patent: 7400181 (2008-07-01), Metz et al.
patent: 7684531 (2010-03-01), Masui et al.
patent: 2005/0195893 (2005-09-01), Brunn et al.
patent: 2007/0075759 (2007-04-01), Metz et al.

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