Jitter estimating device and estimating method
AssigneesAdvantest Corporation, Mani Soma
InventorsTakahiro Yamaguchi, Masahiro Ishida, Mani Soma
Life of this patent
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Abstract
There is provided a jitter estimating apparatus for calculating phase noise waveform of an input signal and for estimating a peak value, a peak-to-peak value and a worst value of jitter of the input signal, and probability to generate jitter based on the phase noise waveform. Timing jitter sequence, period jitter sequence, and cycle to cycle period jitter sequence of the input signal are calculated and the peak value and the peak to peak value for each jitter, as well as probability to generate jitter may be estimated.
Claims42
A jitter estimating apparatus for estimating jitter of an input signal, comprising:
- a phase noise detecting unit for calculating phase noise waveform of said input signal;
- and
- a worst value estimating unit for calculating a worst value of jitter of said input signal based on the phase noise waveform.
A jitter estimating apparatus for estimating jitter of an input signal, comprising:
- a phase noise detecting unit for calculating phase noise waveform of the input signal;
- and
- a probability estimating unit for calculating probability in which peak jitter and/or peak-to-peak jitter of the input signal are/is generated.
A method of estimating jitter of an input signal, comprising steps of:
- detecting phase noise to calculate phase noise waveform of the input signal;
- and
- estimating a worst value to calculate said worst value of jitter in the input signal based on the phase noise waveform.
A method of estimating jitter estimating jitter of an input signal, comprising steps of:
- detecting phase noise for calculating phase noise waveform of the input signal;
- and
- estimating probability for calculating probability in which peak jitter and/or peak-to-peak jitter of the input signal are/is generated based on the phase noise waveform.
Dependencies are inferred from the claim text.