Apparatus for and method of measuring cross-correlation coefficient between signals
US6594595B2 · kind B2 · utility
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6References
19Claims
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Key dates
| Filing date | Apr 3, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jul 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/15
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Timing jitter sequences &Dgr;&phgr;j[n] and &Dgr;&phgr;k[n] of respective clock signals under measurement xj(t) and xk(t) are obtained, and a covariance &sgr;tj,tk=(1/N)&Sgr;i=1N&Dgr;&phgr;j[i]·&Dgr;&phgr;k[i] is obtained. In addition, root-mean-square values &sgr;tj and &sgr;tk of the respective &Dgr;&phgr;j[n] and &Dgr;&phgr;k[n] are obtained, and a cross-correlation coefficient &rgr;=&sgr;tj,tk/(&sgr;tj·&sgr;tk) between the xj(t) and xk(t) is calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.