北京大学学报（自然科学版）
北京大學學報（自然科學版）
북경대학학보（자연과학판）
ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS PEKINENSIS
2007年
5期
654-658
,共5页
彭春干%于敦山%曹喜信%盛世敏
彭春榦%于敦山%曹喜信%盛世敏
팽춘간%우돈산%조희신%성세민
H.264%VBSME%SAD%VLSI%视频通讯
H.264%VBSME%SAD%VLSI%視頻通訊
H.264%VBSME%SAD%VLSI%시빈통신
H.264%VBSME%SAD%VLSI%video communication
针对无线视频通讯H.264编码器关键技术VBSME VLSI实现,提出了一种低复杂度结构,该结构由宏块输入缓存器,17×16 蛇形扫描寄存器阵列, 8×8 PE阵列,4×4 SAD加法树和四步可变块运动矢量生成器组成.在有效保持所有的H.264宏块特性的基础上,相对于宏块级的VBSME结构,通过采用新提出的四步可变块运动矢量生成器和双时钟频率调谐技术,主要的数据通道宽度缩减到25%, 硬件代价缩减到37%,关键路径延时由9.8 ns减少到8.2 ns,功耗约降低了50.3%.
針對無線視頻通訊H.264編碼器關鍵技術VBSME VLSI實現,提齣瞭一種低複雜度結構,該結構由宏塊輸入緩存器,17×16 蛇形掃描寄存器陣列, 8×8 PE陣列,4×4 SAD加法樹和四步可變塊運動矢量生成器組成.在有效保持所有的H.264宏塊特性的基礎上,相對于宏塊級的VBSME結構,通過採用新提齣的四步可變塊運動矢量生成器和雙時鐘頻率調諧技術,主要的數據通道寬度縮減到25%, 硬件代價縮減到37%,關鍵路徑延時由9.8 ns減少到8.2 ns,功耗約降低瞭50.3%.
침대무선시빈통신H.264편마기관건기술VBSME VLSI실현,제출료일충저복잡도결구,해결구유굉괴수입완존기,17×16 사형소묘기존기진렬, 8×8 PE진렬,4×4 SAD가법수화사보가변괴운동시량생성기조성.재유효보지소유적H.264굉괴특성적기출상,상대우굉괴급적VBSME결구,통과채용신제출적사보가변괴운동시량생성기화쌍시종빈솔조해기술,주요적수거통도관도축감도25%, 경건대개축감도37%,관건로경연시유9.8 ns감소도8.2 ns,공모약강저료50.3%.
An efficient low complexity H.264 VBSME (variable-block-size motion estimation) VLSI (very large scale integrated) architecture is designed, in which a MB-size input buffer, 17×16 snake scan register array, 8×8 PE array,4×4 SAD-adder-tree are used and a four-step VBS MV generator structure is proposed to reduce the hardware cost for wireless video communication applications. Compared with the MB-level VBSME structure, the total count of gates is reduced to 37%, the delay of critical path is shorten from 9.8 ns to 8.2 ns, and nearly 50.3% power is saved and the main data-path width is narrowed to 25%, but all MB characters are reserved. Its low-hardware-complexity performance makes it suitable for the integration of H.264 encoder in wireless video communication applications.
