Data processing: measuring – calibrating – or testing – Measurement system – Measured signal processing
Reexamination Certificate
2007-11-27
2007-11-27
Ramos-Feliciano, Eliseo (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Measured signal processing
C702S182000, C702S190000, C702S194000
Reexamination Certificate
active
11151132
ABSTRACT:
There is provided a method and apparatus for performing an eye scan. Said apparatus comprises: a receiver for receiving input signals; an equaliser for processing said input signals; a data sampler for sampling said processed input signals at certain sampling points to produce a data output, said data sampler being controlled by a clock signal; an edge sampler for detecting the edges of the processed input signal; an early/late voter for deciding whether a current sampling point needs to be advanced or retarded. The early/late voter passes an Up/Down signal to an interpolator for maintaining said clock signal, said interpolator acting on said Up/Down signal to adjust the clock signal by stepping it forward or backward according to control need, so that said sampling point can be advanced or retarded.
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Forey Simon
Leslie Tom
Pickering Andrew
Simpson Robert
Brady III W. James
Kempler William B.
Ramos-Feliciano Eliseo
Suarez Felix
Telecky , Jr. Frederick J.
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