{"id":5428,"date":"2012-07-18T22:28:42","date_gmt":"2012-07-18T22:28:42","guid":{"rendered":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/?p=5428"},"modified":"2012-07-19T14:49:00","modified_gmt":"2012-07-19T14:49:00","slug":"a-quad-full-hd-high-efficiency-video-coding-decoder-chip","status":"publish","type":"post","link":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/a-quad-full-hd-high-efficiency-video-coding-decoder-chip\/","title":{"rendered":"A Quad Full HD High Efficiency Video Coding Decoder Chip"},"content":{"rendered":"

The ever-increasing demand for richer internet video content and larger video resolution has motivated work on algorithms that achieve higher compression without sacrificing visual quality. High Efficiency Video Coding (HEVC) [1<\/a>] <\/sup> is being developed by the Joint Collaborative Team on Video Coding as a successor to the popular H.264\/MPEG-4 AVC standard. For the same quality, HEVC aims for a 50% bit-rate savings over AVC. This improvement comes at the cost of larger coding units, increased complexity through the addition of new coding tools, and increased computation in existing tools.<\/p>\n

Key features of HEVC include hierarchical coding structures of sizes 64×64 down to 8×8 pixels, 36 intra-prediction modes, asymmetric motion partitions, large and non-square transforms, and multiple concatenated loop filters. This work aims at developing a new system architecture for the hierarchical coding structure along with novel designs for the coding tools themselves. A hybrid system pipeline structure is proposed to support all three largest coding units. The transform block uses SRAM-based 2-D transpose memory and leverages DCT matrix properties for extensive resource-sharing techniques for area reduction. External memory bandwidth and power are major concerns for high definition video decoding. These goals are addressed by a novel cache design with 2-D memory mapping and high throughput.<\/p>\n

An HEVC video decoder chip capable of real time Quad Full HD (3840×2160) at 30 fps has been implemented. The decoder supports the HEVC Test Model HM-4.0 with low-complexity entropy coding and both low-delay and random-access encoding profiles.<\/p>\n

\"Figure<\/a>

Figure 1: Hierarchical coding structure of HEVC.<\/p><\/div>\n

  1. B. Bross, W.-J. Han, J.-R. Ohm, G. J. Sullivan, and T. Wiegand, \u201cHigh efficiency video coding (HEVC) text specification draft 6,<\/em>\u201d ITU-T SG16 WP3 and ISO\/IEC JTC1\/SC29\/WG11 document JCTVC-H1003, Joint Collaborative Team on Video Coding<\/em>, San Jose, CA, Feb. 2012. [↩<\/a>] <\/li><\/ol>","protected":false},"excerpt":{"rendered":"

    The ever-increasing demand for richer internet video content and larger video resolution has motivated work on algorithms that achieve higher…<\/p>\n","protected":false},"author":1,"featured_media":5429,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[26],"tags":[17,11506,11507],"_links":{"self":[{"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/posts\/5428"}],"collection":[{"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/comments?post=5428"}],"version-history":[{"count":4,"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/posts\/5428\/revisions"}],"predecessor-version":[{"id":6553,"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/posts\/5428\/revisions\/6553"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/media\/5429"}],"wp:attachment":[{"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/media?parent=5428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/categories?post=5428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mtlsites.mit.edu\/annual_reports\/2012\/wp-json\/wp\/v2\/tags?post=5428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}