Architecture for multi-format video processing

摘要

An architecture for multi-format video processing of both high definition and standard definition television signals has a pair of processing paths. For HDTV one path processes the luminance component signal and the other path processes an interleaved color difference signal that is the combination of a pair of color difference component signals. For SDTV only a single path is used. The luminance and color difference component signals are interleaved together and optionally stuffed with filler bits to provide an interleaved signal at a high data rate, such as the HDTV data rate or one-half the HDTV data rate, for processing. After processing the SDTV components are deinterleaved from the processed interleaved signal. The color difference component signals may be upsampled prior to interleaving and subsampled after deinterleaving to simplify control signals. Thus the architecture provides a single processor for processing either an HDTV signal or two SDTV signals, one on each of the two HDTV paths.