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    • 1. 发明授权
    • Reduced bandwidth off-loading of entropy coding/decoding
    • 降低熵编码/解码带宽的卸载
    • US08270495B2
    • 2012-09-18
    • US12370699
    • 2009-02-13
    • Jim Chen ChouRui Zhang
    • Jim Chen ChouRui Zhang
    • H04N7/26
    • H04N19/40H04N19/42H04N19/46H04N19/61
    • Techniques are provided herein to produce encoded video bitstreams and to similarly decode encoded video bitstreams according to a coding standard not supported by an on-chip encoder/decoder. For purposes of encoding, a video sequence is received at a first device. A first bitstream is generated at the first device by encoding the video sequence according to a first coding standard and information associated with the video sequence is generated at the first device according to a second coding standard. The first bitstream and the information are then transmitted to a second device. At the second device the first bitstream is decoded to produce a second bitstream. The second bitstream and the information are combined by removing syntax elements associated with the first coding standard from the second bitstream and adding the information to produce a third bitstream according to the second coding standard. Similar techniques are provided for decoding an encoded bitstream to recover a video sequence.
    • 本文提供了技术来产生编码视频比特流,并且根据不由片上编码器/解码器支持的编码标准类似地解码经编码的视频比特流。 为了编码的目的,在第一设备处接收视频序列。 通过根据第一编码标准编码视频序列,在第一设备处产生第一比特流,并且根据第二编码标准在第一设备处生成与视频序列相关联的信息。 然后将第一比特流和信息发送到第二设备。 在第二设备处,第一比特流被解码以产生第二比特流。 通过从第二比特流中除去与第一编码标准相关联的语法元素,并根据第二编码标准添加信息以产生第三比特流,来组合第二比特流和信息。 提供了用于解码编码比特流以恢复视频序列的类似技术。
    • 2. 发明申请
    • REDUCED BANDWIDTH OFF-LOADING OF ENTROPY CODING/DECODING
    • 减少带宽编码/解码的带宽偏移
    • US20100208825A1
    • 2010-08-19
    • US12370699
    • 2009-02-13
    • Jim Chen ChouRui Zhang
    • Jim Chen ChouRui Zhang
    • H04N7/26
    • H04N19/40H04N19/42H04N19/46H04N19/61
    • Techniques are provided herein to produce encoded video bitstreams and to similarly decode encoded video bitstreams according to a coding standard not supported by an on-chip encoder/decoder. For purposes of encoding, a video sequence is received at a first device. A first bitstream is generated at the first device by encoding the video sequence according to a first coding standard and information associated with the video sequence is generated at the first device according to a second coding standard. The first bitstream and the information are then transmitted to a second device. At the second device the first bitstream is decoded to produce a second bitstream. The second bitstream and the information are combined by removing syntax elements associated with the first coding standard from the second bitstream and adding the information to produce a third bitstream according to the second coding standard. Similar techniques are provided for decoding an encoded bitstream to recover a video sequence.
    • 本文提供了技术来产生编码视频比特流,并且根据不由片上编码器/解码器支持的编码标准类似地解码经编码的视频比特流。 为了编码的目的,在第一设备处接收视频序列。 通过根据第一编码标准编码视频序列,在第一设备处产生第一比特流,并且根据第二编码标准在第一设备处生成与视频序列相关联的信息。 然后将第一比特流和信息发送到第二设备。 在第二设备处,第一比特流被解码以产生第二比特流。 通过从第二比特流中除去与第一编码标准相关联的语法元素,并根据第二编码标准添加信息以产生第三比特流,来组合第二比特流和信息。 提供了用于解码编码比特流以恢复视频序列的类似技术。
    • 3. 发明申请
    • SYSTEM AND METHOD FOR RATE CONTROL IN A NETWORK ENVIRONMENT
    • 网络环境中速率控制的系统和方法
    • US20100195741A1
    • 2010-08-05
    • US12366599
    • 2009-02-05
    • Jim Chen ChouRui Zhang
    • Jim Chen ChouRui Zhang
    • H04N7/26
    • H04N21/2402H04N19/115H04N19/132H04N19/147H04N19/156H04N19/174H04N19/187H04N19/36H04N21/234327
    • A method is provided in one example embodiment and includes receiving video data and gathering statistics associated with the video data. At least some of the video data is broken into slices, each of the slices representing a partition in a video frame within the video data. Each frame is encoded with one or more quality layers based on an outgoing rate and based on a number of central processing unit (CPU) cycles, wherein one or more quality layers of the frames are dropped in the encoding process. In more specific embodiments, the statistics relate to how many bits are used for encoding the quality layers of the video data and how much complexity is required for encoding the quality layers of the video data. After the statistics gathering, adjustments to a network rate are executed.
    • 在一个示例实施例中提供了一种方法,并且包括接收视频数据并收集与视频数据相关联的统计信息。 视频数据中的至少一些被分解为片,每个片表示视频数据内的视频帧中的分区。 基于输出速率并且基于多个中央处理单元(CPU)周期,每帧对一个或多个质量层进行编码,其中在编码处理中丢弃一个或多个这些帧的质量层。 在更具体的实施例中,统计信息涉及用于对视频数据的质量层进行编码的多少位以及对视频数据的质量层进行编码所需的复杂度。 统计采集后,执行网络速率调整。
    • 5. 发明申请
    • Estimating Video Quality Corruption in Lossy Networks
    • 估计有损网络中的视频质量损失
    • US20110249127A1
    • 2011-10-13
    • US12755684
    • 2010-04-07
    • Rui ZhangJim Chen ChouTapabrata Biswas
    • Rui ZhangJim Chen ChouTapabrata Biswas
    • H04N17/00
    • H04N17/004
    • Techniques are provided herein for estimating video quality corruption at a device in a network from a data stream encapsulating a video transport stream comprising one or more video frames. The video transport stream is decoded to produce a current video frame. A current loss affected region map is generated comprising values configured to indicate a level of quality for each macroblock in the current video frame, and a decoder based or deterministic quality corruption metric is generated based on the values in the current loss affected region map. When the network device does not have video decoding capability, techniques are further provided for computing a statistics-based video quality corruption metric based on a data loss rate for the current video frame and other statistics.
    • 本文提供的技术用于从封装包括一个或多个视频帧的视频传输流的数据流估计网络中的设备的视频质量损坏。 视频传输流被解码以产生当前的视频帧。 产生电流损耗影响区域图,其包括被配置为指示当前视频帧中的每个宏块的质量水平的值,并且基于当前损失影响区域图中的值生成基于解码器或确定性质量损失度量。 当网络设备不具有视频解码能力时,还提供了用于基于当前视频帧的数据丢失率和其他统计来计算基于统计的视频质量损失度量的技术。
    • 8. 发明授权
    • Adaptive joint source channel coding
    • 自适应联合信道编码
    • US08582640B2
    • 2013-11-12
    • US11015840
    • 2004-12-16
    • Jim Chen ChouAli Jezu Tabatabai
    • Jim Chen ChouAli Jezu Tabatabai
    • H04N7/12
    • H04L1/0041H04L1/0045H04N19/597H04N19/89
    • Adaptive joint source channel coding associates multiple predictors with a reference data unit, such as a macroblock or frame of video data. An encoder determines a sub-codebook in which each of the selected multiple predictors decodes to the reference data unit. An identifier for the sub-codebook is transmitted through a channel to a decoder for subsequent decoding of the reference data unit. The reference data unit itself does not need to be sent. The multiple predictors are contained within a decoding region and the identifier for the sub-codebook specifies the decoding region. The decoder uses the identified sub-codebook and one of the predictors to decode the reference data unit. If none of the original predictors are correctly received, different types of error handling are employed based on the type of channel.
    • 自适应联合源信道编码将多个预测器与诸如宏块或视频数据帧的参考数据单元相关联。 编码器确定其中每个所选择的多个预测器解码到参考数据单元的子码本。 子码本的标识符通过信道发送到解码器,用于参考数据单元的后续解码。 参考数据单元本身不需要发送。 多个预测器被包含在解码区域内,并且子码本的标识符指定解码区域。 解码器使用所识别的子码本和预测器之一来解码参考数据单元。 如果没有正确接收到原始预测器,则基于通道的类型采用不同类型的错误处理。
    • 10. 发明授权
    • Adaptive joint source channel coding
    • 自适应联合信道编码
    • US08705613B2
    • 2014-04-22
    • US10877589
    • 2004-06-25
    • Jim Chen ChouAli Jezu Tabatabai
    • Jim Chen ChouAli Jezu Tabatabai
    • H04N7/12
    • H04L1/0041H04N19/30H04N19/577H04N19/61H04N19/619H04N19/63H04N19/94
    • Adaptive joint source channel coding associates multiple predictors with a reference data unit, such as a macroblock or frame of video data. An encoder determines a sub-codebook in which each of the selected multiple predictors decodes to the reference data unit. An identifier for the sub-codebook is transmitted through a channel to a decoder for subsequent decoding of the reference data unit. The reference data unit itself does not need to be sent. The multiple predictors are contained within a decoding region and the identifier for the sub-codebook specifies the decoding region. The decoder uses the identified sub-codebook and one of the predictors to decode the reference data unit. If none of the original predictors are correctly received, different types of error handling are employed based on the type of channel.
    • 自适应联合源信道编码将多个预测器与诸如宏块或视频数据帧的参考数据单元相关联。 编码器确定其中每个所选择的多个预测器解码到参考数据单元的子码本。 子码本的标识符通过信道发送到解码器,用于参考数据单元的后续解码。 参考数据单元本身不需要发送。 多个预测器被包含在解码区域内,并且子码本的标识符指定解码区域。 解码器使用所识别的子码本和预测器之一来解码参考数据单元。 如果没有正确接收到原始预测器,则基于通道的类型采用不同类型的错误处理。