Method and apparatus for quadratic interpolation
US5502662A · kind A · utility
6Cited by
5References
3Claims
0Family size
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Key dates
| Filing date | Oct 26, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Oct 26, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/17
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of signal sample interpolation utilizing a second order curve utilizing a linear interpolator to select a mid-point between respective input samples, eliminating phase error and spatial variation, utilizing the interpolated points as reference points for a quadratic interpolation wherein the space between the reference points is one half the distance between respective signal sample points, and thirdly combining the operations of linear interpolation and quadratic interpolation for simultaneous execution. More particularly, the quadratic interpolation is reformed based on the output of the linear interpolation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.