A Hybrid Memory Sub-system for Video Coding Applications

This paper introduces a parameterisable, application and platform-independent, hybrid memory sub-system for custom hardware. This memory sub-system consists of a scratchpad memory (SPM) and a custom parallel cache, which exploits data re-use effectively in spite of data dependence. The cache is capable of exploiting spatial locality of memory accesses in two dimensions, making it ideal for video applications. Further, we conducted a case study involving the Quad-tree Structured Pulse Code Modulation (QSDPCM) algorithm, commonly used in MPEG applications. Specifically, the data dependent nature of memory accesses is demonstrated. Using the memory sub-system,

• Type: Conference
• Year: 2007
• Where: FCCM
• Authors: Su-Shin Ang, George A. Constantinides, Wayne Luk, Peter Y. K. Cheung
• Keywords: FCCM 2007, Hardware, Hybrid Memory Sub-system, Memory Accesses, Memory Sub-system