Method and apparatus for quadratic interpolation

Details Method and apparatus for quadratic interpolation Method and apparatus for quadratic interpolation

1993-12-23

1995-01-03

Mai, Tan V.

Boots, shoes, and leggings

G06F 738

Patent

active

053792416

ABSTRACT:
A method of signal sample interpolation utilizing a second order curve comprising the steps of utilizing a linear interpolator to select a mid-point between respective input samples, thereby 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.

REFERENCES:
patent: 3789203 (1974-01-01), Catherall et al.
patent: 4649414 (1987-09-01), Christopher
patent: 4763293 (1988-08-01), Takei et al.
patent: 5068816 (1991-11-01), Noetzel
patent: 5257355 (1993-10-01), Akamatsu

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