Patent ID: 7053966
Filing Date: 2006-05-30
Classification: H04N

Abstract:
1. A spline interpolation device comprising: a controller for selecting sections arranged between control seeds for spline interpolation among a plurality of horizontal and vertical lines in a specific order and for interpolating first through fourth position coefficients of control seeds assigned to the selected sections and generating the interpolation results; a position coordinate generator for performing operations on a number of the horizontal lines of control seeds and its squared and cubed values and generating the operation results; a multiplier for multiplying the horizontal line number output from the position coordinate generator and its squared and cubed values by the second through fourth position coefficients output from the controller, respectively; and an adder for summing the first position coefficient output from controller and an output of the multiplier to generate values of the sections interpolated, wherein the controller selects a first reference seed among the control seeds, selects a second reference seed with seeds spaced from the first reference seed by two seed pitches, and generates position coefficients by interpolating in the order of a first closest seed and a second closest seed that are the closest to the first reference seed.