公开(公告)号：US10484677B2

公开(公告)日：2019-11-19

申请号：US15053304

申请日：2016-02-25

Applicant: BROADCOM CORPORATION

Inventor： Peisong Chen ,  Wade K. Wan

IPC: H04N7/26 ,  H04N19/10 ,  H04N19/82 ,  H04N19/86

Abstract: Sample adaptive offset (SAO) in accordance with video coding. SAO filtering may be performed before de-blocking processing (e.g., in accordance with video signal decoding and/or encoding). For example, a receiver and/or decoder communication device may receive signaling from a transmitter and/or encoder communication device that includes various band offsets. Corresponding band indices may be determined via analysis of the received video signal (e.g., received from the transmitter and/or encoder communication device), inferentially without requiring signaling of such band indices from the transmitter and/or encoder communication device. Upon appropriate analysis of one or more largest coding units (LCUs) generated from the video signal to determine a pixel value distribution (e.g., which may be using a histogram in one instance), then based on that pixel value distribution, the band indices are identified and the band offsets applied thereto.

公开(公告)号：US20160037171A1

公开(公告)日：2016-02-04

申请号：US14879451

申请日：2015-10-09

Applicant: BROADCOM CORPORATION

Inventor： Brian Heng ,  Wade K. Wan ,  Zhijie Yang

IPC: H04N19/164 ,  H04N19/103 ,  H04N19/86 ,  H04N19/30 ,  H04N19/40 ,  H04N19/895

CPC classification number: H04N19/164 ,  H04N19/103 ,  H04N19/30 ,  H04N19/40 ,  H04N19/86 ,  H04N19/895

Abstract: Multi-mode error concealment, recovery and resilience coding. Adaptation of a number of coding units (CUs) employed in accordance with video coding may be made as a function of error. As a number of errors increases, the respective number of CUs may correspondingly increase (e.g., which may be made in accompaniment with a reduction of CU size). As a number of errors decreases, the respective number of CUs may correspondingly decrease (e.g., which may be made in accompaniment with an increase of CU size). Such errors may be associated with a type of source providing a video signal, a type of error resilience coding employed, communication link and/or channel conditions, a remote error characteristic (e.g., such as associated with a source device and/or destination device), a local error characteristic (e.g., such as associated with operations and/or processing within a given device), and/or any other type of consideration.

公开(公告)号：US20130343447A1

公开(公告)日：2013-12-26

申请号：US13783565

申请日：2013-03-04

Applicant: BROADCOM CORPORATION

Inventor： Peisong Chen ,  Brian Heng ,  Wade K. Wan

IPC: H04N7/26

CPC classification number: H04N19/82

Abstract: Adaptive loop filter (ALF) padding in accordance with video coding. Various types of video processing are performed including performing virtual padding. When a filter coefficients collocated pixel is not available, that pixel may be replaced using an available pixel within a given location within a filter to process a number of pixels. For example, an available pixel located within the center of such a filter (e.g., which may be a cross shaped filter including a predetermined number of pixels, such as 18 pixels in one instance) may be used to replace those pixel locations which are not available in accordance with such virtual padding. With respect to the implementation of such an adaptive loop filter (ALF), such an ALF may be implemented to process a signal output from a de-blocking filter, from a sample adaptive offset (SAO) filter, and/or from a combined de-blocking/SAO filter in various implementations.

Abstract translation: 根据视频编码的自适应环路滤波器（ALF）填充。 执行各种类型的视频处理，包括执行虚拟填充。 当滤波器系数并置像素不可用时，可以使用滤波器内的给定位置内的可用像素来替换该像素以处理多个像素。 例如，可以使用位于这种滤波器的中心内的可用像素（例如，其可以是包括预定数量的像素的十字形滤光器，例如在一个实例中为18像素），以代替不是的像素位置 根据这种虚拟填充可用。 关于这样的自适应环路滤波器（ALF）的实现，可以实现这样的ALF来处理从解块滤波器输出的信号，来自采样自适应偏移（SAO）滤波器和/或从组合的de 阻塞/ SAO过滤器。

公开(公告)号：US09380320B2

公开(公告)日：2016-06-28

申请号：US13623765

申请日：2012-09-20

Applicant: Broadcom Corporation

Inventor： Ba-Zhong Shen ,  Wade K. Wan ,  Peisong Chen

IPC: H04N7/12 ,  H04N19/86 ,  H04N19/48 ,  H04N19/82

CPC classification number: H04N19/86 ,  H04N19/48 ,  H04N19/82

Abstract: Frequency domain sample adaptive offset (SAO). Video processing of a first signal operates to generate a second video signal such that at least one characteristic of a first portion of video information of the first video signal is replicated in generating a second portion of video information, such that the first portion of video information and the second portion of video information undergo combination to generate the second video signal. Such use of the first video signal may involve replication and scaling of the first video information to generate the second portion of video information. One possible characteristic of the first portion of video information may correspond to an energy profile as a function of frequency. One or more portions of the first video signal may be employed to generate different respective portions of the second signal. Such video processing operations may be performed on a block by block basis.

公开(公告)号：US09906797B2

公开(公告)日：2018-02-27

申请号：US14879451

申请日：2015-10-09

Applicant: BROADCOM CORPORATION

Inventor： Brian Heng ,  Wade K. Wan ,  Zhijie Yang

IPC: H04N19/00 ,  H04N19/164 ,  H04N19/30 ,  H04N19/103 ,  H04N19/86 ,  H04N19/40 ,  H04N19/895

CPC classification number: H04N19/164 ,  H04N19/103 ,  H04N19/30 ,  H04N19/40 ,  H04N19/86 ,  H04N19/895

Abstract: Multi-mode error concealment, recovery and resilience coding. Adaptation of a number of coding units (CUs) employed in accordance with video coding may be made as a function of error. As a number of errors increases, the respective number of CUs may correspondingly increase (e.g., which may be made in accompaniment with a reduction of CU size). As a number of errors decreases, the respective number of CUs may correspondingly decrease (e.g., which may be made in accompaniment with an increase of CU size). Such errors may be associated with a type of source providing a video signal, a type of error resilience coding employed, communication link and/or channel conditions, a remote error characteristic (e.g., such as associated with a source device and/or destination device), a local error characteristic (e.g., such as associated with operations and/or processing within a given device), and/or any other type of consideration.

公开(公告)号：US20170208350A1

公开(公告)日：2017-07-20

申请号：US15050120

申请日：2016-02-22

Applicant: Broadcom Corporation

Inventor： Jason W. Herrick ,  Daniel William English ,  Wade K. Wan

IPC: H04N21/234 ,  H04N19/42 ,  H04N21/266 ,  H04N21/462 ,  H04N21/472

CPC classification number: H04N21/23424 ,  H04N19/42 ,  H04N21/23439 ,  H04N21/2387 ,  H04N21/26603 ,  H04N21/4621 ,  H04N21/47217

Abstract: Systems, methods and apparatuses for handling trick mode operation using multiple video streams are provided. A media server presents a first video stream having a first level of a video characteristic for display. The media server, in response to receiving a first command, presents a second video stream having a second level of the video characteristic for display while stopping presenting the first video stream for display based on a determination determined using the first level of the video characteristic and the second level of the video characteristic. The first video stream and the second video stream are directed to the same video content.

公开(公告)号：US20130208810A1

公开(公告)日：2013-08-15

申请号：US13623765

申请日：2012-09-20

Applicant: Broadcom Corporation

Inventor： Ba-Zhong Shen ,  Wade K. Wan ,  Peisong Chen

IPC: H04N7/24 ,  H04N9/67

CPC classification number: H04N19/86 ,  H04N19/48 ,  H04N19/82

Abstract: Frequency domain sample adaptive offset (SAO). Video processing of a first signal operates to generate a second video signal such that at least one characteristic of a first portion of video information of the first video signal is replicated in generating a second portion of video information, such that the first portion of video information and the second portion of video information undergo combination to generate the second video signal. Such use of the first video signal may involve replication and scaling of the first video information to generate the second portion of video information. One possible characteristic of the first portion of video information may correspond to an energy profile as a function of frequency. One or more portions of the first video signal may be employed to generate different respective portions of the second signal. Such video processing operations may be performed on a block by block basis.

Abstract translation: 频域采样自适应偏移（SAO）。 第一信号的视频处理操作以产生第二视频信号，使得在生成视频信息的第二部分时复制第一视频信号的视频信息的第一部分的至少一个特征，使得视频信息的第一部分 并且视频信息的第二部分经过组合以产生第二视频信号。 第一视频信号的这种使用可能涉及复制和缩放第一视频信息以产生视频信息的第二部分。 视频信息的第一部分的一个可能的特征可以对应于作为频率的函数的能量分布。 可以采用第一视频信号的一个或多个部分来产生第二信号的不同的相应部分。 这样的视频处理操作可以逐个块地执行。

公开(公告)号：US20160173870A1

公开(公告)日：2016-06-16

申请号：US15053304

申请日：2016-02-25

Applicant: BROADCOM CORPORATION

Inventor： Peisong Chen ,  Wade K. Wan

IPC: H04N19/10 ,  H04N19/86 ,  H04N19/82

Abstract: Sample adaptive offset (SAO) in accordance with video coding. SAO filtering may be performed before de-blocking processing (e.g., in accordance with video signal decoding and/or encoding). For example, a receiver and/or decoder communication device may receive signaling from a transmitter and/or encoder communication device that includes various band offsets. Corresponding band indices may be determined via analysis of the received video signal (e.g., received from the transmitter and/or encoder communication device), inferentially without requiring signaling of such band indices from the transmitter and/or encoder communication device. Upon appropriate analysis of one or more largest coding units (LCUs) generated from the video signal to determine a pixel value distribution (e.g., which may be using a histogram in one instance), then based on that pixel value distribution, the band indices are identified and the band offsets applied thereto.

Abstract translation: 根据视频编码采样自适应偏移（SAO）。 可以在去块处理（例如，根据视频信号解码和/或编码）之前执行SAO滤波。 例如，接收机和/或解码器通信设备可以从包括各种频带偏移的发射机和/或编码器通信设备接收信令。 可以通过分析接收的视频信号（例如，从发射机和/或编码器通信设备接收）来确定相应的频带索引，而不需要来自发射机和/或编码器通信设备的这种频带索引的信令。 在从视频信号产生的一个或多个最大编码单元（LCU）进行适当分析以确定像素值分布（例如，其可以在一个实例中使用直方图）时，则基于该像素值分布，带索引是 识别并施加带偏移。

公开(公告)号：US20130235926A1

公开(公告)日：2013-09-12

申请号：US13781075

申请日：2013-02-28

Applicant: BROADCOM CORPORATION

Inventor： Wade K. Wan ,  Peisong Chen

IPC: H04N7/26

CPC classification number: H04N19/46 ,  H04N19/103

Abstract: Memory efficient video parameter processing. A communication system including at least two respective devices, namely, a transmitter device and a receiver device, operates with significant reduction in the amount of signaling provided between those respective devices. Such devices may be transceiver devices. Considering such a transmitter device that includes an encoder, such as a video encoder, and a receiver device that includes a decoder, such as a video decoder, and output bitstream corresponding to an encoded video signal may be provided from the transmitter device and received by the receiver device. Such an output bitstream may be generated by a video encoder within the transmitter device and may subsequently undergo appropriate processing by a video decoder within the receiver device. One or more frame-based signals, corresponding respectively to the number of blocks, may be communicated as being respectively limited to at most one step of recursion among the various blocks.

Abstract translation: 内存高效的视频参数处理。 包括至少两个相应设备（即，发射机设备和接收机设备）的通信系统以显着降低在各个设备之间提供的信令量的方式进行操作。 这样的设备可以是收发器设备。 考虑到包括诸如视频编码器的编码器和包括解码器（例如视频解码器）和与编码视频信号相对应的输出比特流的接收机设备的这种发射机设备可以从发射机设备提供并由 接收机设备。 这样的输出比特流可以由发射机设备内的视频编码器生成，并且随后可以由接收机设备内的视频解码器进行适当的处​​理。 可以将分别对应于块的数量的一个或多个基于帧的信号分别限制为在各个块之间至多一个递归步骤。