High-throughput low-cost VLSI architecture for AVC/H.264 CAVLC decoding
نویسندگان
چکیده
This study develops a low-cost very-large-scale-integration (VLSI) hardware architecture for entropy coding with increased throughput using the statistical properties of context-based adaptive variable-length coding (CAVLC) in AVC/H.264. Statistical analyses show that better symbol length prediction was achieved by breaking the recursive dependency among codewords for the multi-symbol decoder implementation. The proposed CAVLC decoder easily meets the real-time requirements for high definition (HD) (192
منابع مشابه
A Novel Low-Cost High-Throughput CAVLC Decoder for H.264/AVC
This paper presents a novel low-cost high-performance CAVLC decoder for H.264/AVC. The proposed CAVLC decoder generates the length of coeff token and total zeros symbols with simple arithmetic operation. So, it can be implemented with reduced look-up table. And we propose multi-symbol run before decoder which has enhanced throughput. It can decode more than 2.5 symbols in a cycle if there are r...
متن کاملVery-large-scale integration design of a low-power and cost-effective context-based adaptive variable length coding decoder for H.264/AVC portable applications
Context-based adaptive variable length coding (CAVLC) is a new and efficient entropy coding tool in H.264/AVC (advanced video coding). This study proposes a low-power and cost-effective CAVLC decoding architecture for the H.264/ AVC baseline profile. Specifically, this study proposes an optimum two-layer power model for the variable length look-up table (VLUT) in the CAVLC decoder, and divides ...
متن کاملA parallel CAVLC design for 4096×2160p encoder
This paper presents a high performance VLSI design of Context-Based Adaptive Variable Length-Coding (CAVLC) for 4096x2160p@60fps H.264/AVC encoder. A parallel architecture is proposed to make the scan and encode stage work simultaneously. Four coefficients are scanned in parallel, and four Levels and Run_before are coded in parallel. From experimental results, only 120 cycles at most are needed...
متن کاملA Novel Design of High-Throughout Hard Ware Implementation for Video Decoding based on H.264
In this paper, a novel high-throughput implementation for video decoding based on H.264 is proposed to improve the decoding efficiency. H.264 provides many new functions than previous video coding algorithm that bring more complex computations, Therefore, How t implementation of the decoder efficiency becomes a challenging. Research shows in the decoding flow there are many data dependency amon...
متن کاملFPGA based High Performance CAVLC Implementation for H. 264 Video Coding
Context-based adaptive variable-length coding (CAVLC) is an important feature of the latest video coding standard H. 264/AVC. The coding technique using conventional CAVLC based on area efficient design, the second is on low power design architecture will lead to low throughput. In this paper, an efficient CAVLC design is proposed. The main concept is the FPGA based pipelining scheme for parall...
متن کامل