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：US20090066852A1

公开(公告)日：2009-03-12

申请号：US12226299

申请日：2006-12-18

申请人： Jiwang Dai ,  Glenn Lawrence Cash ,  Alan Jay Stein

发明人： Jiwang Dai ,  Glenn Lawrence Cash ,  Alan Jay Stein

IPC分类号： H04N5/50

CPC分类号： H04N5/50 ,  H04N21/23439 ,  H04N21/4384 ,  H04N21/44016 ,  H04N21/6405 ,  H04N21/64322

摘要： A digital video apparatus provides reduced channel change times. According to an exemplary embodiment, the digital video apparatus includes at least one receiver for receiving first and second video streams representing the same program, wherein the first video stream has at least one characteristic different from the second video stream; a first signal processor for processing the first video stream to generate a first processed video stream; a second signal processor for processing the second video stream to generate a second processed video stream having a delay with respect to the first processed video stream; a renderer for rendering the second processed video stream responsive to a channel change command; and a switch for switching from the second processed video stream to the first processed video stream after the renderer begins rendering the second processed video stream, and thereby causing the renderer to begin rendering the first processed video stream.

摘要翻译： 数字视频设备提供减少的频道切换时间。 根据示例性实施例，数字视频装置包括用于接收表示相同节目的第一和第二视频流的至少一个接收器，其中第一视频流具有与第二视频流不同的至少一个特性; 第一信号处理器，用于处理第一视频流以产生第一处理视频流; 第二信号处理器，用于处理第二视频流以产生具有相对于第一处理视频流的延迟的第二处理视频流; 用于响应于频道改变命令渲染第二处理视频流的渲染器; 以及用于在渲染器开始渲染第二处理视频流之后从第二处理视频流切换到第一处理视频流的开关，从而使渲染器开始渲染第一处理视频流。

公开(公告)号：US20100064316A1

公开(公告)日：2010-03-11

申请号：US12312394

申请日：2006-12-13

申请人： Jiwang Dai ,  Alan Jay Stein

发明人： Jiwang Dai ,  Alan Jay Stein

IPC分类号： H04N5/445 ,  H04N7/16 ,  H04N9/475

CPC分类号： H04N5/50 ,  H04N5/04 ,  H04N5/4401 ,  H04N21/23439 ,  H04N21/4307 ,  H04N21/4384 ,  H04N21/44016 ,  H04N21/6405

摘要： A digital A/V apparatus provides reduced channel changes times and maintains synchronization between audio and video content during a channel change event. According to an exemplary embodiment, the digital A/V apparatus includes at least one signal receiver for receiving a first audio stream, a first video stream and a second video stream, wherein the first and second video streams represent the same program and the first video stream has at least one characteristic different from the second video stream; a first audio signal processor for processing the first audio stream to generate a first processed audio stream; a first video signal processor for processing the first video stream to generate a first processed video stream; a second video signal processor for processing the second video stream to generate a second processed video stream having a delay with respect to the first processed video stream; a first buffer for buffering the first processed audio stream to provide de-jittering; a renderer for rendering the first processed audio stream and the second processed video stream in response to a channel change command; a switch for switching from the second processed video stream to the first processed video stream after the renderer begins rendering the second processed video stream, and thereby causing the renderer to begin rendering the first processed video stream; and whereby synchronization between the first processed audio stream and the first processed video stream is maintained during a channel change event.

摘要翻译： 数字A / V设备在频道改变事件期间提供减少的频道改变时间并且保持音频和视频内容之间的同步。 根据示例性实施例，数字A / V装置包括用于接收第一音频流，第一视频流和第二视频流的至少一个信号接收器，其中第一和第二视频流表示相同的节目，第一视频 流具有与第二视频流不同的至少一个特征; 第一音频信号处理器，用于处理第一音频流以产生第一处理的音频流; 第一视频信号处理器，用于处理第一视频流以产生第一处理视频流; 第二视频信号处理器，用于处理第二视频流以产生具有相对于第一处理视频流的延迟的第二处理视频流; 用于缓冲第一处理音频流以提供去抖动的第一缓冲器; 用于响应于频道改变命令呈现第一处理音频流和第二处理视频流的渲染器; 在所述渲染器开始渲染所述第二处理视频流之后从所述第二处理视频流切换到所述第一处理视频流的开关，从而使所述渲染器开始渲染所述第一处理视频流; 并且由此在信道改变事件期间维持第一处理音频流和第一处理视频流之间的同步。

公开(公告)号：US08406288B2

公开(公告)日：2013-03-26

申请号：US12226299

申请日：2006-12-18

申请人： Jiwang Dai ,  Glenn Lawrence Cash ,  Alan Jay Stein

发明人： Jiwang Dai ,  Glenn Lawrence Cash ,  Alan Jay Stein

IPC分类号： H04N7/12 ,  H04N9/475

CPC分类号： H04N5/50 ,  H04N21/23439 ,  H04N21/4384 ,  H04N21/44016 ,  H04N21/6405 ,  H04N21/64322

摘要： A digital video apparatus provides reduced channel change times. According to an exemplary embodiment, the digital video apparatus includes at least one receiver for receiving first and second video streams representing the same program, wherein the first video stream has at least one characteristic different from the second video stream; a first signal processor for processing the first video stream to generate a first processed video stream; a second signal processor for processing the second video stream to generate a second processed video stream having a delay with respect to the first processed video stream; a renderer for rendering the second processed video stream responsive to a channel change command; and a switch for switching from the second processed video stream to the first processed video stream after the renderer begins rendering the second processed video stream, and thereby causing the renderer to begin rendering the first processed video stream.

摘要翻译： 数字视频设备提供减少的频道切换时间。 根据示例性实施例，数字视频装置包括用于接收表示相同节目的第一和第二视频流的至少一个接收器，其中第一视频流具有与第二视频流不同的至少一个特性; 第一信号处理器，用于处理第一视频流以产生第一处理视频流; 第二信号处理器，用于处理第二视频流以产生具有相对于第一处理视频流的延迟的第二处理视频流; 用于响应于频道改变命令渲染第二处理视频流的渲染器; 以及用于在渲染器开始渲染第二处理视频流之后从第二处理视频流切换到第一处理视频流的开关，从而使渲染器开始渲染第一处理视频流。

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：US08458744B2

公开(公告)日：2013-06-04

申请号：US12312394

申请日：2006-12-13

申请人： Jiwang Dai ,  Alan Jay Stein

发明人： Jiwang Dai ,  Alan Jay Stein

IPC分类号： G06F3/00 ,  G06F13/00 ,  H04N5/445

CPC分类号： H04N5/50 ,  H04N5/04 ,  H04N5/4401 ,  H04N21/23439 ,  H04N21/4307 ,  H04N21/4384 ,  H04N21/44016 ,  H04N21/6405

摘要： A digital A/V apparatus provides reduced channel changes times and maintains synchronization between audio and video content during a channel change event. According to an exemplary embodiment, the digital A/V apparatus includes at least one signal receiver for receiving a first audio stream, a first video stream and a second video stream, wherein the first and second video streams represent the same program and the first video stream has at least one characteristic different from the second video stream; a first audio signal processor for processing the first audio stream to generate a first processed audio stream; a first video signal processor for processing the first video stream to generate a first processed video stream; a second video signal processor for processing the second video stream to generate a second processed video stream having a delay with respect to the first processed video stream; a first buffer for buffering the first processed audio stream to provide de-jittering; a renderer for rendering the first processed audio stream and the second processed video stream in response to a channel change command; a switch for switching from the second processed video stream to the first processed video stream after the renderer begins rendering the second processed video stream, and thereby causing the renderer to begin rendering the first processed video stream; and whereby synchronization between the first processed audio stream and the first processed video stream is maintained during a channel change event.

摘要翻译： 数字A / V设备在频道改变事件期间提供减少的频道改变时间并且保持音频和视频内容之间的同步。 根据示例性实施例，数字A / V装置包括用于接收第一音频流，第一视频流和第二视频流的至少一个信号接收器，其中第一和第二视频流表示相同的节目，第一视频 流具有与第二视频流不同的至少一个特征; 第一音频信号处理器，用于处理第一音频流以产生第一处理音频流; 第一视频信号处理器，用于处理第一视频流以产生第一处理视频流; 第二视频信号处理器，用于处理第二视频流以产生具有相对于第一处理视频流的延迟的第二处理视频流; 用于缓冲第一处理音频流以提供去抖动的第一缓冲器; 用于响应于频道改变命令呈现第一处理音频流和第二处理视频流的渲染器; 在所述渲染器开始渲染所述第二处理视频流之后从所述第二处理视频流切换到所述第一处理视频流的开关，从而使所述渲染器开始渲染所述第一处理视频流; 并且由此在信道改变事件期间维持第一处理音频流和第一处理视频流之间的同步。

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。