文献类型：期刊文献

英文题名：Hardware-Decoder-Friendly High Throughput String Prediction for SCC Implemented in AVS3

作者：Zhao, Liping[1,2,3];Yan, Zhuge[1,2];Wu, Zongda[1,2];Wang, Jiangda[1,2];Lin, Tao[4]

机构：[1]Shaoxing Univ, Dept Comp Sci & Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Inst Artificial Intelligence, Shaoxing 312000, Peoples R China;[3]Peking Univ, Informat Technol R&D Innovat Ctr, Shaoxing 312000, Peoples R China;[4]Tongji Univ, VLSI Inst, Shanghai 200092, Peoples R China

年份：2025

卷号：32

起止页码：1166

外文期刊名：IEEE SIGNAL PROCESSING LETTERS

收录：SCI-EXPANDED(收录号：WOS:001449647000001)、、EI(收录号：20250917979074)、Scopus(收录号：2-s2.0-105001090437)、WOS

基金：This work was supported in part by the National Natural Science Foundation of China under Grant 62271321, in part by the Zhejiang Provincial Natural Science Foundation of China under Grant LZ24F010003 and Grant LR23F020001, in part by the Major Science and Technology Research Projects of Zhejiang Provice of China under Grant 2025C01074, and in part by the Science and Technology Plan Project in Basic Public Welfare Class of Shaoxing City under Grant 2023A11006.

语种：英文

外文关键词：Video coding; screen content coding; screen content coding; audio video standard; audio video standard; string prediction; string prediction; SRAM; SRAM; high throughput; high throughput

外文摘要：String prediction (SP) is a highly efficient screen content coding technique adopted into international and China video coding standards. However, SP requires a high number of SRAM fetches to decode and output a block for display, leading to low throughput (T). Low T results in a high decoder and SRAM clock frequency to output the required number of display pixels, which is determined by the specific display resolution and frame rate. To achieve hardware-decoder-friendly high throughput SP (HTSP), this paper exploits specific SRAM fetch rate constraints for five SRAM-cell sizes commonly used in hardware decoder designs. Additionally, the optimal reference string selection process is formulated as a multi-constraint rate-distortion optimization (MCRDO) problem and a novel reference string searching method is presented. HTSP boosts throughput by up to 4 times compared to the state-of-the- art SP, with only a negligible impact on coding efficiency.