公开(公告)号：US20090245393A1

公开(公告)日：2009-10-01

申请号：US12309571

申请日：2007-07-25

申请人： Alan Jay Stein ,  Jiwang Dai ,  John Qiang Li ,  Xiuping Lu

发明人： Alan Jay Stein ,  Jiwang Dai ,  John Qiang Li ,  Xiuping Lu

IPC分类号： H04N11/02

CPC分类号： H04N21/4347 ,  H04N21/23424 ,  H04N21/2365 ,  H04N21/2662 ,  H04N21/4305 ,  H04N21/4307 ,  H04N21/434 ,  H04N21/4383 ,  H04N21/4384 ,  H04N21/44016

摘要： There are provided methods and apparatus for fast channel change for digital video. An apparatus includes at least one encoder for receiving normal video data and channel change video data and encoding the normal video data and the channel change video data in a normal video stream and a channel change video stream, respectively, using a common system clock to provide synchronization between the normal video stream and the channel change video stream. The normal video stream and the channel change video stream are encoded for transport separately at a transport level.

摘要翻译： 提供了用于数字视频快速通道改变的方法和装置。 一种装置包括至少一个用于接收正常视频数据和频道改变视频数据的编码器，并且使用公共系统时钟分别在普通视频流和频道改变视频流中编码普通视频数据和频道改变视频数据，以提供 正常视频流与频道之间的同步改变视频流。 正常视频流和频道改变视频流在传输层分别被编码用于传输。

公开(公告)号：US08750385B2

公开(公告)日：2014-06-10

申请号：US12448291

申请日：2006-12-20

申请人： Jiwang Dai ,  John Qiang Li ,  Alan Jay Stein

发明人： Jiwang Dai ,  John Qiang Li ,  Alan Jay Stein

IPC分类号： H04N11/04

CPC分类号： H04N21/23418 ,  H04N19/159 ,  H04N19/172 ,  H04N19/37 ,  H04N19/61 ,  H04N21/23439 ,  H04N21/2365 ,  H04N21/4384 ,  H04N21/440263 ,  H04N21/6405 ,  H04N21/64322

摘要： A system and method for recovering from data loss are described including monitoring a first bit rate video data bit stream to determine if there is frame loss or damage, multiplexing decoding parameters of a second bit rate video data bit stream, the second bit rate video data bit stream and the first bit rate video data bit stream, if there is frame loss or damage, demultiplexing the first bit rate video data bit stream and the second bit rate video data bit stream, decoding the first bit rate video data bit stream, removing damaged frames from the first bit rate video data bit stream, decoding the second bit rate video data bit stream, up-sampling frames from said processed second bit rate video data bit stream if said processed second bit rate video data bit stream has a lower resolution than said processed first bit rate video data bit stream and merging frames from the second bit rate video data bit stream and the first bit rate video data bit stream.

摘要翻译： 描述了从数据丢失恢复的系统和方法，包括监视第一比特率视频数据比特流以确定是否存在帧丢失或损坏，复用第二比特率视频数据比特流的解码参数，第二比特率视频数据 比特流和第一比特率视频数据比特流，如果存在帧丢失或损坏，解复用第一比特率视频数据比特流和第二比特率视频数据比特流，对第一比特率视频数据比特流进行解码，去除 来自第一比特率视频数据比特流的损坏帧，对第二比特率视频数据比特流进行解码，如果所述处理的第二比特率视频数据比特流具有较低的分辨率，则从所述处理的第二比特率视频数据比特流向上采样帧 比所述处理的第一比特率视频数据比特流和来自第二比特率视频数据比特流和第一比特率视频数据比特流的合并帧。

公开(公告)号：US20100046634A1

公开(公告)日：2010-02-25

申请号：US12448291

申请日：2006-12-20

申请人： Jiwang Dai ,  John Qiang Li ,  Alan Jay Stein

发明人： Jiwang Dai ,  John Qiang Li ,  Alan Jay Stein

IPC分类号： H04N7/26

CPC分类号： H04N21/23418 ,  H04N19/159 ,  H04N19/172 ,  H04N19/37 ,  H04N19/61 ,  H04N21/23439 ,  H04N21/2365 ,  H04N21/4384 ,  H04N21/440263 ,  H04N21/6405 ,  H04N21/64322

摘要： A system and method for recovering from data loss are described including monitoring a first bit rate video data bit stream to determine if there is frame loss or damage, multiplexing decoding parameters of a second bit rate video data bit stream, the second bit rate video data bit stream and the first bit rate video data bit stream, if there is frame loss or damage, demultiplexing the first bit rate video data bit stream and the second bit rate video data bit stream, decoding the first bit rate video data bit stream, removing damaged frames from the first bit rate video data bit stream, decoding the second bit rate video data bit stream, up-sampling frames from said processed second bit rate video data bit stream if said processed second bit rate video data bit stream has a lower resolution than said processed first bit rate video data bit stream and merging frames from the second bit rate video data bit stream and the first bit rate video data bit stream.

摘要翻译： 描述了从数据丢失恢复的系统和方法，包括监视第一比特率视频数据比特流以确定是否存在帧丢失或损坏，复用第二比特率视频数据比特流的解码参数，第二比特率视频数据 比特流和第一比特率视频数据比特流，如果存在帧丢失或损坏，解复用第一比特率视频数据比特流和第二比特率视频数据比特流，对第一比特率视频数据比特流进行解码，去除 来自第一比特率视频数据比特流的损坏帧，对第二比特率视频数据比特流进行解码，如果所述处理的第二比特率视频数据比特流具有较低的分辨率，则从所述处理的第二比特率视频数据比特流向上采样帧 比所述处理的第一比特率视频数据比特流和来自第二比特率视频数据比特流和第一比特率视频数据比特流的合并帧。

公开(公告)号：US20110122945A1

公开(公告)日：2011-05-26

申请号：US12737497

申请日：2009-07-21

申请人： John Qiang Li ,  Zhenyu Wu ,  Xiuping Lu

发明人： John Qiang Li ,  Zhenyu Wu ,  Xiuping Lu

IPC分类号： H04N7/12

CPC分类号： H04N19/00321 ,  H04N19/177 ,  H04N19/187 ,  H04N19/33 ,  H04N19/59 ,  H04N19/895

摘要： Methods for concealing Scalable Video Coding (SVC) decoding errors. Lost pictures in the target layer are replaced with up-sampled pictures from a lower layer, such as the base layer. In multiloop decoding applications, lost pictures in the target layer are replaced with corresponding up-sampled pictures from the lower layer. Subsequent target layer pictures in the same Group of Pictures (GOP) are either replaced with corresponding upsampled pictures from the lower layer, or they are decoded with up-sampled pictures from the lower layer used as reference pictures. For single-loop decoding, the bit stream of each layer is buffered, for each GOP, and inspected for errors. If an error is detected in the target layer, the pictures of the highest level layer without an error are decoded and up-sampled and used as the output pictures for the current GOP.

摘要翻译： 隐藏可缩放视频编码（SVC）解码错误的方法。 目标层中丢失的图像将被从较低层（例如基础层）的上采样图像所取代。 在多循环解码应用中，目标层中的丢失图像将被来自下层的相应的上采样图像所取代。 相同图像组（GOP）中的后续目标图像图像将被来自较低层的相应的上采样图像替换，或者用来自用作参考图像的较低层的上采样图像进行解码。 对于单循环解码，每个层的比特流对于每个GOP进行缓冲，并检查错误。 如果在目标层中检测到错误，则无错误的最高级别图层的图像被解码并上采样并用作当前GOP的输出图像。

公开(公告)号：US08798145B2

公开(公告)日：2014-08-05

申请号：US12737497

申请日：2009-07-21

申请人： John Qiang Li ,  Zhenyu Wu ,  Xiuping Lu

发明人： John Qiang Li ,  Zhenyu Wu ,  Xiuping Lu

IPC分类号： H04N7/12 ,  H04N7/26 ,  H04N7/46 ,  H04N7/68

CPC分类号： H04N19/00321 ,  H04N19/177 ,  H04N19/187 ,  H04N19/33 ,  H04N19/59 ,  H04N19/895

摘要： Methods for concealing Scalable Video Coding (SVC) decoding errors. Lost pictures in the target layer are replaced with up-sampled pictures from a lower layer, such as the base layer. In multiloop decoding applications, lost pictures in the target layer are replaced with corresponding up-sampled pictures from the lower layer. Subsequent target layer pictures in the same Group of Pictures (GOP) are either replaced with corresponding upsampled pictures from the lower layer, or they are decoded with up-sampled pictures from the lower layer used as reference pictures. For single-loop decoding, the bit stream of each layer is buffered, for each GOP, and inspected for errors. If an error is detected in the target layer, the pictures of the highest level layer without an error are decoded and up-sampled and used as the output pictures for the current GOP.

摘要翻译： 隐藏可缩放视频编码（SVC）解码错误的方法。 目标层中丢失的图像将被从较低层（例如基础层）的上采样图像所取代。 在多循环解码应用中，目标层中的丢失图像将被来自下层的相应的上采样图像所取代。 相同图像组（GOP）中的后续目标图像图像将被来自较低层的相应的上采样图像替换，或者用来自用作参考图像的较低层的上采样图像进行解码。 对于单循环解码，每个层的比特流对于每个GOP进行缓冲，并检查错误。 如果在目标层中检测到错误，则无错误的最高级别图层的图像被解码并上采样并用作当前GOP的输出图像。

公开(公告)号：US20110109808A1

公开(公告)日：2011-05-12

申请号：US12737416

申请日：2009-07-28

申请人： John Qiang Li ,  Xiuping Lu ,  Zhenyu Wu

发明人： John Qiang Li ,  Xiuping Lu ,  Zhenyu Wu

IPC分类号： H04N7/26 ,  H04N5/44

CPC分类号： H04N5/50 ,  H04N5/45 ,  H04N21/23439 ,  H04N21/4316 ,  H04N21/4384

摘要： A method and apparatus for fast channel change when changing the channel from a channel being viewed full screen as a main picture to a channel being viewed in a secondary channel program display window (e.g., a picture-in-picture (PIP) window). In one implementation, during the channel change, a secondary video stream for a secondary channel program is up-sampled and displayed full screen while receiving the corresponding regular video stream for the video program, of which program contents are identical to those of the secondary video stream. The program contents of the up-sampled secondary video stream is then be replaced seamlessly with those of the corresponding regular video stream at the time when an instantaneous decode refresh (IDR) frame of the corresponding regular video stream is received. In another implementation, the last GOP packets of the corresponding regular video stream, corresponding to a secondary video stream being viewed in the secondary channel program display window, are buffered without being decoded. Upon a request for the channel change, the buffered GOP packets are decoded and displayed immediately while the decoder starts receiving the following frames in the corresponding regular video stream.

摘要翻译： 一种用于在从作为主图像全屏观看的频道改变频道到在辅助频道节目显示窗口（例如，画中画（PIP）窗口）中观看的频道的频道改变时的方法和装置。 在一个实现中，在频道改变期间，用于辅助频道节目的辅助视频流被上采样并全屏显示，同时接收用于视频节目的相应的常规视频流，其中节目内容与次要视频的相同 流。 然后，当接收到相应的常规视频流的瞬时解码刷新（IDR）帧时，上采样次视频流的节目内容将与相应的常规视频流的节目内容无缝替换。 在另一实施方式中，缓冲对应于在辅助信道节目显示窗口中观看的次视频流的相应常规视频流的最后GOP分组，而不被解码。 在请求频道改变时，缓冲的GOP分组被解码并立即显示，同时解码器开始接收相应的常规视频流中的后续帧。

公开(公告)号：US08582644B2

公开(公告)日：2013-11-12

申请号：US12737556

申请日：2009-01-29

申请人： Xiuping Lu ,  Zhenyu Wu ,  John Qiang Li

发明人： Xiuping Lu ,  Zhenyu Wu ,  John Qiang Li

IPC分类号： H04B1/66 ,  H04N7/26

CPC分类号： H04L65/608 ,  H04N19/107 ,  H04N19/187 ,  H04N19/33 ,  H04N19/61 ,  H04N21/23424 ,  H04N21/234327 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/4384 ,  H04N21/44016 ,  H04N21/440227 ,  H04N21/6437

摘要： An apparatus encodes a video signal for providing a scalable video coded (SVC) signal comprising a base layer video coded signal and an enhancement layer video coded signal, wherein the base layer video coded signal has more random access points, e.g., Instantaneous Decoder Refresh (IDR) slices, than the enhancement layer and in those access units where the enhancement layer has an IDR slice, the base layer has a non-IDR slice. Transmission of the SVC occurs in packet form using the Real-time Transport Protocol (RTP) such that non-random access point slices are conveyed in Simple Time Aggregation Packets (STAP), each Simple Time Aggregation Packet comprising a Payload Content Scalability Information (PACSI) Network Abstraction Layer (NAL) Unit.

摘要翻译： 一种装置对视频信号进行编码，以提供包括基本层视频编码信号和增强层视频编码信号的可分级视频编码信号（SVC），其中基本层视频编码信号具有更多的随机接入点，例如瞬时解码器刷新（ IDR）切片，并且在增强层具有IDR切片的那些访问单元中，基层具有非IDR切片。 SVC的传输以分组形式使用实时传输协议（RTP）发生，使得非随机接入点片段在简单时间聚合分组（STAP）中传送，每个简单时间聚合分组包括有效载荷内容可扩展性信息（PACSI ）网络抽象层（NAL）单元。

公开(公告)号：US20110134994A1

公开(公告)日：2011-06-09

申请号：US12737556

申请日：2009-01-29

申请人： Xiuping Lu ,  Zhenyu Wu ,  John Qiang Li

发明人： Xiuping Lu ,  Zhenyu Wu ,  John Qiang Li

IPC分类号： H04N7/26

CPC分类号： H04L65/608 ,  H04N19/107 ,  H04N19/187 ,  H04N19/33 ,  H04N19/61 ,  H04N21/23424 ,  H04N21/234327 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/4384 ,  H04N21/44016 ,  H04N21/440227 ,  H04N21/6437

摘要： An apparatus encodes a video signal for providing a scalable video coded (SVC) signal comprising a base layer video coded signal and an enhancement layer video coded signal, wherein the base layer video coded signal has more random access points, e.g., Instantaneous Decoder Refresh (IDR) slices, than the enhancement layer and in those access units where the enhancement layer has an IDR slice, the base layer has a non-IDR slice. Transmission of the SVC occurs in packet form using the Real-time Transport Protocol (RTP) such that non-random access point slices are conveyed in Simple Time Aggregation Packets (STAP), each Simple Time Aggregation Packet comprising a Payload Content Scalability Information (PACSI) Network Abstraction Layer (NAL) Unit.

摘要翻译： 一种装置对视频信号进行编码，以提供包括基本层视频编码信号和增强层视频编码信号的可分级视频编码信号（SVC），其中基本层视频编码信号具有更多的随机接入点，例如瞬时解码器刷新（ IDR）切片，并且在增强层具有IDR切片的那些访问单元中，基层具有非IDR切片。 SVC的传输以分组形式使用实时传输协议（RTP）发生，使得非随机接入点片段在简单时间聚合分组（STAP）中传送，每个简单时间聚合分组包括有效载荷内容可扩展性信息（PACSI ）网络抽象层（NAL）单元。

公开(公告)号：US20110110418A1

公开(公告)日：2011-05-12

申请号：US12737373

申请日：2009-01-16

申请人： Xiuping Lu ,  Zhenyu Wu ,  John Qiang Li

发明人： Xiuping Lu ,  Zhenyu Wu ,  John Qiang Li

IPC分类号： H04N7/26

CPC分类号： H04N21/4384 ,  H04N19/30 ,  H04N19/65 ,  H04N19/68 ,  H04N19/89 ,  H04N21/234327 ,  H04N21/2362 ,  H04N21/4383

摘要： An apparatus encodes a video signal for providing a scalable video coded (SVC) signal comprising a base layer video coded signal and an enhancement layer video coded signal, wherein the base layer video coded signal has more random access points, e.g., Instantaneous Decoder Refresh (IDR) slices, than the enhancement layer and in those access units where the enhancement layer has an IDR slice, the base layer has a non-IDR slice.

摘要翻译： 一种装置对视频信号进行编码，以提供包括基本层视频编码信号和增强层视频编码信号的可分级视频编码信号（SVC），其中基本层视频编码信号具有更多的随机接入点，例如瞬时解码器刷新（ IDR）切片，并且在增强层具有IDR切片的那些访问单元中，基层具有非IDR切片。

公开(公告)号：US20110109810A1

公开(公告)日：2011-05-12

申请号：US12737415

申请日：2009-07-28

申请人： John Qiang Li ,  Xiuping Lu ,  Zhenyu Wu

发明人： John Qiang Li ,  Xiuping Lu ,  Zhenyu Wu

IPC分类号： H04N7/26 ,  H04N5/44 ,  H04N5/50

CPC分类号： H04N21/44016 ,  H04N5/4401 ,  H04N5/45 ,  H04N5/50 ,  H04N21/23424 ,  H04N21/234327 ,  H04N21/4316 ,  H04N21/4384 ,  H04N21/4621

摘要： There are provided methods and apparatus for fast channel change when changing the channel from a channel being viewed full screen to a channel being viewed in a secondary display window (e.g., picture-in-picture (PIP) window). In one implementation, the base layer stream of the SVC encoded stream is used as the secondary stream for the secondary display and the corresponding enhancement layer stream is used as the corresponding regular stream. Upon channel change request, the decoded base layer picture of the SVC encoded stream is up-sampled, and the up-sampled base layer picture is displayed full screen while receiving the corresponding SVC enhancement layer stream. Then, the up-sampled base layer picture is replaced by the decoded enhancement layer picture upon confirmation of successful receiving and decoding of an enhancement layer instantaneous decode refresh (IDR) frame. In another implementation, the last GOP of enhancement layer stream corresponding to a base layer stream being viewed in the secondary display window is buffered without decoding, and upon a channel change request to the secondary video display window channel, the buffered packets are decoded and displayed immediately while the decoder continues to receive and decode all frames in the corresponding base and enhancement layer streams.

摘要翻译： 提供了在从全屏观看的频道到在辅助显示窗口（例如，画中画（PIP）窗口）中正在观看的频道改变频道时提供用于快速频道改变的方法和装置。 在一个实施方式中，使用SVC编码流的基本层流作为辅助显示器的辅助流，并将对应的增强层流用作相应的常规流。 在通道改变请求时，SVC编码流的经解码的基本层图像被上采样，并且上采样的基层图像全屏显示，同时接收相应的SVC增强层流。 然后，在确认增强层瞬时解码刷新（IDR）帧的成功接收和解码之后，上采样的基层图像被解码的增强层图像替换。 在另一实现中，在辅助显示窗口中正在观看的对应于基本层流的增强层流的最后GOP被缓冲而不进行解码，并且在对次要视频显示窗口信道的信道改变请求时，缓冲的分组被解码和显示 立即当解码器继续接收和解码相应的基本和增强层流中的所有帧时。