Patent ID: 7224406
Filing Date: 2007-05-29
Classification: H04N

Abstract:
1. A digital signal processing system applied for chroma transition, the system comprising: a first difference circuit, which receives an original chroma signal and generates a first difference signal of the original chroma signal; a first absolute value circuit coupled to the first difference circuit to calculate an absolute value of the first difference signal; a second difference circuit, which generates a second difference signal based on the reception of the absolute value from the first absolute value circuit; a symbol determining circuit, which determines that the second difference signal is either a positive signal or a negative signal, wherein a determined result is used as a selecting signal; a switching circuit, which receives the original chroma signal and a 2k-delayed chroma signal of the original chroma signal, wherein the switching circuit selectively outputs either the original chroma signal or the 2k-delayed chroma signal based on the selecting signal; and a signal calculation circuit, which receives an output signal of the switching circuit and a k-delayed chroma signal of the original chroma signal, and then generates therefrom an optimized chroma signal.