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Journal of the ACM (JACM)
A Low Power 8 × 8 Direct 2-D DCT Chip Design
Journal of VLSI Signal Processing Systems
A Low Power High Performance Distributed DCT Architecture
ISVLSI '02 Proceedings of the IEEE Computer Society Annual Symposium on VLSI
Design and Implementaion of a 2D-DCT Architecture Using Coefficient Distributed Arithmetic
ISVLSI '05 Proceedings of the IEEE Computer Society Annual Symposium on VLSI: New Frontiers in VLSI Design
Application-specific heterogeneous multiprocessor synthesis using extensible processors
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
New cost-effective VLSI implementation of a 2-D discrete cosine transform and its inverse
IEEE Transactions on Circuits and Systems for Video Technology
VLSI Design - Special issue on VLSI Circuits, Systems, and Architectures for Advanced Image and Video Compression Standards
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In this paper, we propose a self-reconfigurable platform which can reconfigure the architecture of discrete cosine transform (DCT) computations during run-time using dynamic partial reconfiguration. The scalable architecture of DCT computations can compute different numbers of DCT coefficients in a zig-zag scan order to adapt to different requirements, such as power consumption, hardware resources, and performance. We propose a configuration manager, which is implemented in the embedded processor in order to adaptively control the reconfiguration of scalable DCT architecture during run-time. In addition, we use the Lempel-Ziv-Storer-Szymanski algorithm for compression of the partial bitstreams and on-chip BlockRAM as a cache to reduce latency overhead for loading the partial bitstreams from the off-chip memory for run-time reconfiguration. A hardware module is designed for parallel reconfiguration of the partial bitstreams. The experimental results show that our approach can reduce the external memory accesses by 69% and can achieve a 400 MB/s reconfiguration rate. Detailed trade-offs of power, throughput, and quality are investigated, and used as a criterion for self-reconfiguration.