A high-performance & low-power unified 4×4 / 8×8 transform architecture for the H.264/AVC codec

초록

In this paper, we propose a high performance and low power unified 8×8 transform and 4×4 transform architecture for the H.264/AVC codec. The proposed architecture integrates 4×4 transforms and 8×8 transforms in the common architecture with reusability, which reduces complexity significantly. Also, we simplify the transform architecture and data flow to get the high performance merit without decomposition. Furthermore 8×8 transforms can be processed in 5cycles by parallel processing. This way the transform architecture can process full-HD (1080p) video images at 27MHz clock frequency, therefore we get the low power merit. As a result, the proposed architecture trades-off high performance and low power against chip area. © 2008 IEEE.