An independent bandwidth reduction device for HEVC VLSI video system

Jiayi Zhu, Li Guo, Dajiang Zhou, Shinji Kimura, Satoshi Goto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


FRC (frame re-compression) is a kind of widely used technique in reducing the SDRAM (synchronous dynamic random access memory) bandwidth of HEVC video system. However, in previous research works, FRC imposes requirements on accessing pattern and hence its usage are only limited in HEVC video codecs. While in a typical HEVC VLSI video system, there exists many other video IPs with high bandwidth requirements. Therefore, in this article, we propose a new FRC architecture to overcome the limitation and make it applicable to all the video IPs in a HEVC VLSI video system, which raises the overall bandwidth reduction rate of the whole video system. Our proposal has two points: firstly we propose a system internal bus based FRC architecture, which is independent, transparent, and easily connected to all other video IPs. Secondly, we propose a FA (freely access) scheme to remove the requirements on access pattern in previous work. By using this proposal, the bandwidth reduction rate in our VLSI video system model is raised from 92.4% to 69.6%.

Original languageEnglish
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Print)9781479983919
Publication statusPublished - 2015 Jul 27
EventIEEE International Symposium on Circuits and Systems, ISCAS 2015 - Lisbon, Portugal
Duration: 2015 May 242015 May 27


OtherIEEE International Symposium on Circuits and Systems, ISCAS 2015


  • Bandwidth
  • Frame Re-Compression
  • HEVC video system

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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