Method and system for analyzing signal waveforms
AssigneePMC-Sierra US, Inc.
InventorsMathieu Gagnon, Jurgen Hissen
Life of this patent
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Abstract
A method and system for analyzing a signal waveform that comprises digitally sampling a signal at a periodic sampling interval, and accumulating a count of samples of the signal at a given logic level relative to a threshold value over a given period. The threshold value is stepped through a series of values while the accumulating of samples is repeated at a series of different clock offsets. The accumulated counts permit a statistical distribution of the signal waveform to be determined. A signal density can also be calculated by determining the difference between the count of adjacent samples at successive threshold values.
Claims7
A method of analyzing a signal waveform at a receiver, comprising:
- digitally-sampling the signal waveform amplitude at a periodic sampling interval to provide sampled values of the signal waveform
- accumulating a count of the sampled values having a given logic level relative to a threshold value over a given period;
- stepping the threshold value through a series of values and repeating the steps of digitally sampling the signal waveform amplitude and accumulating a count of the sampled values;
- and
- modifying a skew of the periodic sampling interval and repeating the steps of digitally sampling the signal waveform amplitude at the periodic sampling interval, accumulating a count of the sampled values and stepping the threshold value through a series of values to determine a statistical distribution of the signal waveform received at the receiver.
Dependencies are inferred from the claim text.