公开(公告)号：USRE48845E1

公开(公告)日：2021-12-07

申请号：US16103107

申请日：2018-08-14

Applicant: Broadcom Corporation

Inventor： Alexander G. MacInnis ,  Jose' R. Alvarez ,  Sheng Zhong ,  Xiaodong Xie ,  Vivian Hsiun

IPC: G06F9/38 ,  H04N19/12 ,  H04N19/122 ,  H04N19/129 ,  H04N19/157 ,  H04N19/176 ,  H04N19/423 ,  H04N19/44 ,  H04N19/60 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/82 ,  H04N19/90 ,  H04N19/91

Abstract: System and method for decoding digital video data. The decoding system employs hardware accelerators that assist a core processor in performing selected decoding tasks. The hardware accelerators are configurable to support a plurality of existing and future encoding/decoding formats. The accelerators are configurable to support substantially any existing or future encoding/decoding formats that fall into the general class of DCT-based, entropy decoded, block-motion-compensated compression algorithms. The hardware accelerators illustratively comprise a programmable entropy decoder, an inverse quantization module, a inverse discrete cosine transform module, a pixel filter, a motion compensation module and a de-blocking filter. The hardware accelerators function in a decoding pipeline wherein at any given stage in the pipeline, while a given function is being performed on a given macroblock, the next macroblock in the data stream is being worked on by the previous function in the pipeline.

公开(公告)号：US20150237354A1

公开(公告)日：2015-08-20

申请号：US14705463

申请日：2015-05-06

Applicant: Broadcom Corporation

Inventor： Alexander G. MacInnis ,  Sheng Zhong

IPC: H04N19/176 ,  H04N19/167 ,  H04N19/192 ,  H04N19/86

CPC classification number: H04N19/176 ,  H04N19/117 ,  H04N19/159 ,  H04N19/16 ,  H04N19/167 ,  H04N19/192 ,  H04N19/80 ,  H04N19/86

Abstract: Methods are disclosed for performing improved deblocking filtering across edges between macroblocks, with particular application to cases where one macroblock is field coded and its neighbors are frame coded. A method for filtering across horizontal edges comprises determining which macroblocks are considered to be vertically adjacent to each other. The method also determines which macroblocks are considered to be sampled at a same time. Finally, filtering is performed between vertically adjacent macroblocks that are considered to be sampled at a same time. Another method for filtering across vertical edges comprises determining which macroblocks are considered to be horizontally adjacent to each other. The method effectively re-arranges a vertical ordering of horizontal lines of at least a subset of the horizontally adjacent macroblocks. Finally, filtering is performed between the horizontally adjacent macroblocks after the re-arranging.

Abstract translation: 公开了用于在宏块之间的边缘执行改进的去块滤波的方法，具体应用于一个宏块被字段编码并且其邻居被帧编码的情况。 用于跨横向边缘进行滤波的方法包括确定哪些宏块被认为是彼此垂直相邻的。 该方法还确定哪些宏块被认为是在同一时间采样的。 最后，在被认为被同时采样的垂直相邻宏块之间进行滤波。 用于在垂直边缘上进行滤波的另一种方法包括确定哪些宏块被认为是彼此水平相邻的。 该方法有效地重新布置水平相邻宏块的至少一个子集的水平行的垂直排序。 最后，在重新布置之后，在水平相邻的宏块之间进行滤波。

公开(公告)号：US20130251049A1

公开(公告)日：2013-09-26

申请号：US13897527

申请日：2013-05-20

Applicant: Broadcom Corporation

Inventor： Alexander MacInnis ,  Sheng Zhong

IPC: H04N7/36

CPC classification number: H04N19/85 ,  H04N5/145 ,  H04N5/21 ,  H04N19/521

Abstract: Described herein is a method and system for the reduction of noise in a video sequence. When motion is present in the video sequence, this system and method identifies motion data. With the motion data, a Motion Compensated Temporal Filter (MCTF) can apply motion compensation prior to filtering in the time domain. Temporal filtering can be performed to reduce visible noise and other detrimental artifacts.

Abstract translation: 这里描述了一种用于减少视频序列中的噪声的方法和系统。 当视频序列中存在运动时，该系统和方法识别运动数据。 使用运动数据，运动补偿时间滤波器（MCTF）可以在时域滤波之前应用运动补偿。 可以进行时间滤波以减少可见噪声和其他有害的伪影。