Content-aware write reduction mechanism of 3d stacked phase-change RAM based frame store in H.264 video codec system

Sanchuan Guo, Zhenyu Liu, Guohong Li, Takeshi Ikenaga, Dongsheng Wang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


H.264 video codec system requires big capacity and high bandwidth of Frame Store (FS) for buffering reference frames. The up-todate three dimensional (3D) stacked Phase change Random Access Memory (PRAM) is the promising approach for on-chip caching the reference signals, as 3D stacking offers high memory bandwidth, while PRAM possesses the advantages in terms of high density and low leakage power. However, the write endurance problem, that is a PRAM cell can only tolerant limited number of write operations, becomes the main barrier in practical applications. This paper studies the wear reduction techniques of PRAM based FS in H.264 codec system. On the basis of rate-distortion theory, the content oriented selective writing mechanisms are proposed to reduce bit updates in the reference frame buffers. With the proposed control parameter a, our methods make the quantitative trade off between the quality degradation and the PRAM lifetime prolongation. Specifically, taking a in the range of [0.2,2], experimental results demonstrate that, our methods averagely save 29.9-35.5% bit-wise write operations and reduce 52-57% power, at the cost of 12.95-20.57% BDBR bit-rate increase accordingly.

Original languageEnglish
Pages (from-to)1273-1282
Number of pages10
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Issue number6
Publication statusPublished - 2013 Jun


  • H.264/AVC
  • Phase-change RAM (PRAM)
  • Three-dimensional stacking
  • Write endurance

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics


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