| 摘要 |
<p>A novel synchronization scheme for use in connection with digital signal video decoder (58) comprises a pre-parser (52), a channel buffer (54), and a post-parser (56). The pre-parser (52) synchronizes to a multiplexed system bitstream received from a fixed rate channel (50). The video bitstream component of a multiplexed system bitstream is then extracted and synchronized prior to being transferred bit-serially from the pre-parser (52) to a channel buffer (54). The post-parser (56) is coupled to the channel buffer (54) and to a video decoder (58) in a series configuration. The post-parser (56) separates the various layers of video data from the video bitstream component. The post-parser (56) performs a translation operation on the video bitstream component and converts the bitstream data into symbol data. The symbol data is subsequently processed by the video decoder (58) so as to reconstruct an originally encoded picture or frame. Preferably, the multiplexed system bitstream data structure conforms to some format agreed upon among video digital businesses involved in transmission and reception. In accordance with one aspect of the present invention, the pre-parser (52) and the post-parser (56) operate independent of each other, and operate at different processing rates.</p> |
