Patent ID: 7193656

Claim:
A decoder system for displaying pictures, said method comprising: a video decoder for decoding a picture, the decoded picture having a decode format; a chroma filter for interpolating chroma pixels for a display format; a line address computer for providing a set of weights to the chroma filter, the set of weights comprises a first set if the decode format comprises a first format, and a second set of weights to the display engine, if the decode format comprises a second format; a first chroma line buffer for storing a row of displayed chroma Cr pixels; a second chroma line buffer for storing a row of chroma Cb pixels; and wherein the chroma line buffer: receives an input for receiving another row of chroma Cr pixels; interpolates a row of chroma Cr pixels for the display format based on the stored row of chroma Cr pixels, the received row of chroma Cr pixels, and the provided set of weights, thereby resulting in an interpolated row of chroma Cb pixels; and provides the row of chroma Cb pixels stored in the second chroma line buffer with the interpolated row of chroma Cb pixels for display; and wherein the chroma filter interpolates the chroma pixels for the display format based on the provided set of weights.