H.264反变换反量化器的硬件设计  

Hardware Design for H.264 Inverse Transform and Quantization

作　　者：赵爽[1] 王勇[1] 周晓方[1] 周电[1] 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室,上海201203

出　　处：《微电子学与计算机》2008年第1期144-148,共5页Microelectronics & Computer

基　　金：上海-应用材料研究与发展基金项目(06SA10)

摘　　要：针对高清电视应用,实现了面向H.264主层面CABAC解码模块输出之后的宏块残差的顺序调整、反变换和反量化操作。借助高效组织的SRAM,本设计有效地连接了残差调序和反变换反量化两个部分,硬件资源得以充分利用,较好地解决了残差调序的时间瓶颈。同时,根据帧内帧间预测情况下亮度和色度的反变换反量化的算法,通过适当变换,采用同一块电路实现了所有情况下的操作。To support HDTV application, we have achieved a design for reordering, inverse transform and inverse quantization of the coefficient data, which come from the CABAC decoder of H. 264 main profile. Using the high efficiently structured SRAM, this design connects the reordering of coefficient data to the inverse transform and inverse quantization efficiently and the circuit resources are used more sufficiently. Furthermore, it is a best strategy to solve the bottle- neck problem of the time that the coefficient data reordering costs. Meanwhile, the arithmetic expression of the luminance and chroma under the intra- prediction and inter- prediction pattern respectively has been properly modified in order to build the reusable circuit.

关 键 词：高清电视 H.264 主层面 反变换 反量化 

分 类 号：TN4[电子电信—微电子学与固体电子学]