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1. 发明授权

US06731686B1 Apparatus and method for pipelining variable length decode and inverse quantization operations in a hybrid motion-compensated and transform coded video decoder 有权
标题翻译：用于在混合运动补偿和变换编码视频解码器中流水线化可变长度解码和逆量化操作的装置和方法
公开(公告)号：US06731686B1
公开(公告)日：2004-05-04
申请号：US09584834
申请日：2000-05-31
申请人： Subramania I. Sudharsanan , Parthasarathy Sriram , Amit Gulati
发明人： Subramania I. Sudharsanan , Parthasarathy Sriram , Amit Gulati
IPC分类号： H04B166
CPC分类号： H03M7/425 , H04N19/42 , H04N19/61 , H04N19/91
摘要： A method for pipelining variable length decode and inverse quantization operations in a hybrid motion-compensated and transform coded video decoder includes the step of mapping a new code word to a look-up table to retrieve a code word length, a zero-run length, and a quantized level. A new linear, zig-zagged position of a current coefficient is identified from the zero-run length and a previous zero-run length. The code word length is added to a current bitstream position to yield a new bitstream position. A quantization matrix coefficient from the new linear, zig-zagged position of the current coefficient is selected. The quantized level is multiplied by a predetermined value to produce a quantization product. In the case of inter block processing, a quantized level sign value is added to the quantization product. In the case of intra block processing, the quantization product does not include the quantization level sign. The quantization product is multiplied by a quantization matrix coefficient to form a derived quantization value. The derived quantization value is divided by a predetermined word length to produce a final quantization value. The new linear, zig-zagged position of the current coefficient is converted to a two-dimensional display position. The final quantization value is written at the display position.
摘要翻译：用于在混合运动补偿和变换编码视频解码器中流水线可变长度解码和逆量化操作的方法包括将新码字映射到查找表以检索码字长度，零游程长度，和量化水平。从零游程长度和以前的零游程长度来识别当前系数的新的线性，Z字形位置。码字长度被添加到当前比特流位置以产生新的比特流位置。选择来自当前系数的新的线性，Z字形位置的量化矩阵系数。量化电平乘以预定值以产生量化乘积。在块间处理的情况下，将量化的电平符号值加到量化乘积上。在块内处理的情况下，量化乘积不包括量化等级符号。量化乘积乘以量化矩阵系数以形成导出的量化值。导出的量化值被预定的字长除以产生最终的量化值。电流系数的新的线性，Z字形位置被转换为二维显示位置。最终量化值被写入显示位置。

2. 发明授权

US06539059B1 Apparatus and method for efficiently scalable digital video decoding 有权
标题翻译：用于高效可扩展数字视频解码的装置和方法
公开(公告)号：US06539059B1
公开(公告)日：2003-03-25
申请号：US09518455
申请日：2000-03-02
申请人： Parthasarathy Sriram , Subramania I. Sudharsanan , Amit Gulati
发明人： Parthasarathy Sriram , Subramania I. Sudharsanan , Amit Gulati
IPC分类号： H04N712
CPC分类号： H04N19/90 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/177 , H04N19/42 , H04N19/423 , H04N19/44 , H04N19/61 , H04N19/70
摘要： An apparatus for decoding a Motion Compensated-Discrete Cosine Transform (MC-DCT) video stream includes an input port to receive an MC-DCT video stream with an associated hierarchy of data structures including a sequence data structure, a picture data structure, a slice data structure, and a macroblock data structure. A monitor processor splits the MC-DCT video stream into a set of video streams. A set of sub-processors processes the set of video streams. Each sub-processor has an assigned computational task performed on a specified hierarchical level of the associated hierarchy of data structures. Each sub-processor performs the assigned computational task with a designated data structure including all parameter data required at the specified hierarchical level.
摘要翻译：用于解码运动补偿离散余弦变换（MC-DCT）视频流的装置包括用于接收具有包括序列数据结构，图像数据结构，切片的数据结构的相关层级的MC-DCT视频流的输入端口数据结构和宏块数据结构。监视器处理器将MC-DCT视频流分解成一组视频流。一组子处理器处理视频流集合。每个子处理器具有在相关联的数据结构层级的指定层级上执行的分配的计算任务。每个子处理器使用指定的数据结构来执行分配的计算任务，包括在指定层次级别所需的所有参数数据。

3. 发明授权

US06965641B1 Apparatus and method for scalable buffering in a digital video decoder 有权
标题翻译：数字视频解码器中可扩展缓冲的装置和方法
公开(公告)号：US06965641B1
公开(公告)日：2005-11-15
申请号：US09517804
申请日：2000-03-02
申请人： Amit Gulati , Subramania I. Sudharsanan , Parthasarathy Sriram
发明人： Amit Gulati , Subramania I. Sudharsanan , Parthasarathy Sriram
IPC分类号： H04N7/12 , H04N7/26 , H04N7/50
CPC分类号： H04N19/423 , H04N19/44 , H04N19/61
摘要： A method of assigning a buffer size in a video decoder includes the step of establishing a first buffer size for a scalable buffer. A video data stream is then processed with the scalable buffer configured to the first buffer size. A second buffer size is then selected for the scalable buffer. The video stream is then processed with the scalable buffer configured to the second buffer size. Memory utilization data characterizing memory performance during processing with the scalable buffer at the first buffer size and the second buffer size is then created. Afterwards, a buffer size is assigned for the scalable buffer in accordance with the memory utilization data.
摘要翻译：在视频解码器中分配缓冲器大小的方法包括为可伸缩缓冲器建立第一缓冲器大小的步骤。然后，将视频数据流用可配置为第一缓冲区大小的可伸缩缓冲区进行处理。然后为可伸缩缓冲区选择第二个缓冲区大小。视频流然后被配置为第二缓冲器大小的可伸缩缓冲器处理。然后创建在第一缓冲区大小和第二缓冲区大小的可伸缩缓冲区的处理期间表征存储器性能的存储器利用率数据。然后，根据存储器利用数据为可伸缩缓冲器分配缓冲器大小。

4. 发明申请

US20080117978A1 Video coding on parallel processing systems 有权
标题翻译：并行处理系统的视频编码
公开(公告)号：US20080117978A1
公开(公告)日：2008-05-22
申请号：US11973889
申请日：2007-10-09
申请人： Ujval Kapasi , Amit Gulati , John Sievers , Yipeng Liu , Dan Miller
发明人： Ujval Kapasi , Amit Gulati , John Sievers , Yipeng Liu , Dan Miller
IPC分类号： H04N7/32 , H04N7/26
CPC分类号： H04N19/115 , H04N19/176 , H04N19/43 , H04N19/433 , H04N19/436 , H04N19/46 , H04N19/51 , H04N19/53 , H04N19/533 , H04N19/56 , H04N19/61
摘要： A method of estimating motion is disclosed. A first plurality of candidates is identified in a reference frame, wherein the total area occupied by the first plurality of candidates is substantially smaller than that of the reference frame. A first refinement search is then performed based, at least in part, on the first plurality of candidates. One or more best candidates are then identified based, at least in part, on the first refinement search. Finally, motion data is encoded based, at least in part, on the one or more best candidates.
摘要翻译：公开了一种估计运动的方法。在参考帧中识别第一多个候选，其中由第一多个候选占用的总面积显着小于参考帧的总面积。然后，至少部分地基于第一多个候选进行第一细化搜索。然后，至少部分地基于第一细化搜索来识别一个或多个最佳候选者。最后，运动数据至少部分地基于一个或多个最佳候选者进行编码。

5. 发明授权

US08213509B2 Video coding on parallel processing systems 有权
标题翻译：并行处理系统的视频编码
公开(公告)号：US08213509B2
公开(公告)日：2012-07-03
申请号：US11973889
申请日：2007-10-09
申请人： Ujval J. Kapasi , Amit Gulati , John Sievers
发明人： Ujval J. Kapasi , Amit Gulati , John Sievers
IPC分类号： H04N7/12
CPC分类号： H04N19/115 , H04N19/176 , H04N19/43 , H04N19/433 , H04N19/436 , H04N19/46 , H04N19/51 , H04N19/53 , H04N19/533 , H04N19/56 , H04N19/61
摘要： A method of estimating motion is disclosed. A first plurality of candidates is identified in a reference frame, wherein the total area occupied by the first plurality of candidates is substantially smaller than that of the reference frame. A first refinement search is then performed based, at least in part, on the first plurality of candidates. One or more best candidates are then identified based, at least in part, on the first refinement search. Finally, motion data is encoded based, at least in part, on the one or more best candidates.
摘要翻译：公开了一种估计运动的方法。在参考帧中识别第一多个候选，其中由第一多个候选占用的总面积显着小于参考帧的总面积。然后，至少部分地基于第一多个候选进行第一细化搜索。然后，至少部分地基于第一细化搜索来识别一个或多个最佳候选者。最后，运动数据至少部分地基于一个或多个最佳候选者进行编码。

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