Pulse or digital communications – Testing
Reexamination Certificate
2004-07-28
2010-02-23
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Testing
Reexamination Certificate
active
07668233
ABSTRACT:
In accordance with illustrative embodiments, methods and apparati, which determine jitter are described. In one example embodiment, a method includes receiving a signal, wherein the signal comprises a first data pattern which was generated at a first bit rate. The method also includes sampling the signal at a second bit rate to generate a second data pattern. The period of the second bit rate is different from the period of the first bit rate. The method also includes comparing the first data pattern and the second data pattern to determine differences between the first data pattern and the second data pattern. Furthermore, the method includes determining jitter in the signal according to the differences between the first data pattern and the data second data pattern. In other embodiments, by using two different bit rates to determine jitter, jitter can be determined in communication systems in a convenient and cost effective manner.
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Ronnie Neil, “Understanding Jitter and Wander Measurements and Standards”, Agilent Technologies, Feb. 2003.
Bergmann Ernest Eisenhardt
Franke Jorge Eduardo
French John Sargent
Thompson William Joseph
Circadiant Systems, Inc.
Fan Chieh M
Fotakis Aristocratis
Pequignot Matthew A.
Pequignot & Myers LLC
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