14.7 A 4Gpixel/s 8/10b H.265/HEVC video decoder chip for 8K Ultra HD applications

Dajiang Zhou, Shihao Wang, Heming Sun, Jianbin Zhou, Jiayi Zhu, Yijin Zhao, Jinjia Zhou, Shuping Zhang, Shinji Kimura, Takeshi Yoshimura, Satoshi Goto

研究成果: Conference contribution

21 被引用数 (Scopus)


8K Ultra HD is being promoted as the next-generation digital video format. From a communication channel perspective, the latest high-efficiency video coding standard (H.265/HEVC) greatly enhances the feasibility of 8K by doubling the compression ratio. Implementation of such codecs is a challenge, owing to ultra-high throughput requirements and increased complexity per pixel. The former corresponds to up to 10b/pixel, 7680×4320pixels/frame and 120fps - 80× larger than 1080p HD. The latter comes from the new features of HEVC relative to its predecessor H.264/AVC. The most challenging of them is the enlarged and highly variable-size coding/prediction/transform units (CU/PU/TU), which significantly increase: 1) the requirement for on-chip memory as pipeline buffers, 2) the difficulty in maintianing pipeline utilization, and 3) the complexity of inverse transforms (IT). This paper presents an HEVC decoder chip supporting 8K Ultra HD, featuring a 16pixel/cycle true-variable-block-size system pipeline. The pipeline: 1) saves on-chip memory with a novel block-in-block-out (BIBO) queue system and a parameter delivery network, and 2) allows high design efficiency and utilization of processing components through local synchronization. Key optimizations at the component level are also presented.

ホスト出版物のタイトルDigest of Technical Papers - IEEE International Solid-State Circuits Conference
出版社Institute of Electrical and Electronics Engineers Inc.
出版ステータスPublished - 2016 2 23
イベント63rd IEEE International Solid-State Circuits Conference, ISSCC 2016 - San Francisco, United States
継続期間: 2016 1 312016 2 4


Other63rd IEEE International Solid-State Circuits Conference, ISSCC 2016
CountryUnited States
CitySan Francisco

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

フィンガープリント 「14.7 A 4Gpixel/s 8/10b H.265/HEVC video decoder chip for 8K Ultra HD applications」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。