Patent ID: 7619639
Filing Date: 2009-11-17
Classification: G06F,G09G

Abstract:
1. A computer-implemented method for adaptively configuring a multi-tap video filter included in a video processor to filter an input video image received by the video processor to generate an output video image, the method comprising: determining a video input signal resolution associated with the input video image; determining a video output signal resolution associated with the output video image; determining an actual scaling factor by computing a ratio between the video input signal resolution and the video output signal resolution; determining that the actual scaling factor does not correspond to any optimized operating points included in a look-up table stored in a memory, wherein each optimized operating point included in the look-up table corresponds to a different scaling factor and is associated with a different set of filter coefficients; determining a first scaling factor and a second scaling factor that are closest to the actual scaling factor, wherein the first scaling factor corresponds to a first optimized operating point and the second scaling factor corresponds to a second optimized operating point; selecting a first set of filter coefficients associated with the first optimized operating point and a second set of filter coefficients associated with the second optimized operating point from the look-up table; interpolating between the first set of filter coefficients and the second set of filter coefficients to generate a set of interpolated filter coefficients; configuring the multi-tap video filter based on the set of interpolated filter coefficients; filtering the input video image to generate the output video image; and storing the output video image in a video processor memory coupled to the video processor and/or displaying the output video image on a display device.