OPTIMIZED RAM REPRESENTATION OF CONVOLUTIONAL INTERLEAVER/DE-INTERLEAVER DATA STRUCTURE

摘要

An optimized RAM representation of convolutional interleaver and/or de-interleaver data structure (460) for Digital Video Broadcast channel that includes an efficiently organized RAM memory. RAM includes an L number of M byte long delay lines, with L and M being integers. Each delay line is repesented by a row (462-484) including a base value and a current step value. The base value and the current step value for each row are read out of RAM. In the preferred embodiment, the RAM memory includes 12 rows, wherein each row includes a base value and a current step value, and wherein each row includes at least one block including 17 bytes. Each block having a block counter value is addressed by a pointer.