A 64 Cycles/MB, Luma-Chroma Parallelized H.264/AVC Deblocking Filter for 4 K2 K Applications

Weiwei SHEN  Yibo FAN  Xiaoyang ZENG  

IEICE TRANSACTIONS on Electronics   Vol.E95-C   No.4   pp.441-446
Publication Date: 2012/04/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E95.C.441
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Solid-State Circuit Design – Architecture, Circuit, Device and Design Methodology)
H.264/AVC,  deblocking filter,  pipeline,  parallelism,  4 K2 K,  

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In this paper, a high-throughput debloking filter is presented for H.264/AVC standard, catering video applications with 4 K2 K (40962304) ultra-definition resolution. In order to strengthen the parallelism without simply increasing the area, we propose a luma-chroma parallel method. Meanwhile, this work reduces the number of processing cycles, the amount of external memory traffic and the working frequency, by using triple four-stage pipeline filters and a luma-chroma interlaced sequence. Furthermore, it eliminates most unnecessary off-chip memory bandwidth with a highly reusable memory scheme, and adopts a “slide window” buffer scheme. As a result, our design can support 4 K2 K at 30 fps applications at the working frequency of only 70.8 MHz.