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1. 发明申请

WO2012175722A1 MODE DECISION WITH PERCEPTUAL - BASED INTRA SWITCHING 审中-公开
标题翻译：基于内容切换的模式决策
公开(公告)号：WO2012175722A1
公开(公告)日：2012-12-27
申请号：PCT/EP2012/062163
申请日：2012-06-22
申请人： SKYPE , NILSSON, Mattias , VAFIN, Renat , ANDERSEN, Soren Vang
发明人： NILSSON, Mattias , VAFIN, Renat , ANDERSEN, Soren Vang
IPC分类号： H04N7/26 , H04N7/50 , H04N7/64
CPC分类号： H04N19/89 , H04N19/102 , H04N19/103 , H04N19/134 , H04N19/147 , H04N19/166 , H04N19/176 , H04N19/19
摘要： A method comprising: for each target image portion to be encoded, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion and a measure of bit rate required to encode the target image portion, the encoding modes comprising at least an intra frame mode and an inter frame encoding mode; encoding the target image portion into the encoded video stream using the selected encoding mode; and transmitting the encoded video stream over a lossy channel. The estimate of distortion is based on a contribution from possible new loss over the channel comprising possible loss of the target block, and on a contribution from possible past loss over the channel comprising possible loss in a history of the encoded video stream upon which decoding of the target portion depends. The method comprises accumulating the contribution from past loss over time, such that the estimate of distortion grows irrespective of the contribution from new loss.
摘要翻译：一种方法，包括：对于要编码的每个目标图像部分，通过优化包括失真估计和对目标图像部分进行编码所需的比特率的度量的函数来选择一组编码模式中的优选模式，所述编码模式包括至少帧内模式和帧间编码模式; 使用所选择的编码模式将目标图像部分编码成编码视频流; 以及通过有损的信道发送编码的视频流。失真的估计是基于来自包括目标块的可能丢失的信道上的可能的新损失的贡献，以及可能的过去在信道上的损失的贡献，包括编码视频流的历史中可能的损失，目标部分依赖。该方法包括随着时间的推移累积过去损失的贡献，使得失真的估计随着新损失的贡献而增加。

2. 发明申请

WO2011101452A4 DATA COMPRESSION FOR VIDEO 审中-公开
标题翻译：数据压缩视频
公开(公告)号：WO2011101452A4
公开(公告)日：2012-07-12
申请号：PCT/EP2011052463
申请日：2011-02-18
申请人： SKYPE , BIVOLARSKY LAZAR , NILSSON MATTIAS , VAFIN RENAT , ANDERSEN SOREN VANG
发明人： BIVOLARSKY LAZAR , NILSSON MATTIAS , VAFIN RENAT , ANDERSEN SOREN VANG
IPC分类号： H04N7/26
CPC分类号： H04N19/94 , H04N19/105 , H04N19/147 , H04N19/176 , H04N19/18 , H04N19/46 , H04N19/547
摘要： The present invention provides an encoded bitstream and corresponding decoder. An encoded bit stream of compressed video data represents a plurality of successive video frames with each frame being divided into a plurality of portions and each portion corresponding to a plurality of pixels. The encoded bit stream comprises: a set of quantized transform domain coefficients representing a first one of said portions; difference data for a second one of said portions, wherein the difference data defines a difference between transform domain coefficients of the first portion and the predicted second portion, such that the second portion can be predicted from the first portion; and an address specifying the location of the first portion in terms of a whole number of said portions instead of a pixel offset.
摘要翻译：本发明提供了一种编码比特流和相应的解码器。压缩视频数据的编码比特流表示多个连续视频帧，其中每个帧被分成多个部分，并且每个部分对应于多个像素。编码比特流包括：表示所述部分中的第一个的一组量化变换域系数; 其中所述差数据定义所述第一部分和所述预测的第二部分的变换域系数之间的差，使得所述第二部分可以从所述第一部分预测; 以及根据所述部分的整体数量而不是像素偏移来指定第一部分的位置的地址。

3. 发明申请

WO2011101453A3 DATA COMPRESSION FOR VIDEO 审中-公开
标题翻译：数据压缩视频
公开(公告)号：WO2011101453A3
公开(公告)日：2011-10-27
申请号：PCT/EP2011052464
申请日：2011-02-18
申请人： SKYPE LTD , BIVOLARSKY LAZAR , VAFIN RENAT , NILSSON MATTIAS , ANDERSEN SOREN VANG
发明人： BIVOLARSKY LAZAR , VAFIN RENAT , NILSSON MATTIAS , ANDERSEN SOREN VANG
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/115 , H04N19/105 , H04N19/107 , H04N19/119 , H04N19/146 , H04N19/176 , H04N19/46 , H04N19/48 , H04N19/59 , H04N19/61
摘要： A method of encoding a video signal for transmission, comprising: receiving a video signal comprising a plurality of video frames, each frame being divided into a plurality of image portions; for each of a plurality of target ones of said image portions to be encoded, selecting a respective reference portion, generating respective residual data based on the target portion relative to the respective reference portion; during ongoing encoding of the video signal, generating a table of commonly usable reference portions and transmitting an indication of the table to a decoder; and generating an encoded bitstream comprising the residual data together with side information identifying the selected reference portions by reference to an entry in said table, and transmitting the encoded bitstream to the decoder.
摘要翻译：一种编码视频信号进行传输的方法，包括：接收包括多个视频帧的视频信号，每帧被分成多个图像部分; 对于要编码的所述图像部分中的多个目标部分中的每一个，选择相应的参考部分，基于相对于相应参考部分的目标部分生成相应的残差数据; 在对视频信号进行编码期间，生成通用可用参考部分的表格并将该表格的指示发送给解码器; 以及通过参考所述表中的条目来产生包括残差数据的编码比特流和标识所选参考部分的辅助信息，并且将编码比特流发送到解码器。

4. 发明申请

WO2008114087A4 METHOD OF TRANSMITTING DATA IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中传输数据的方法
公开(公告)号：WO2008114087A4
公开(公告)日：2009-03-05
申请号：PCT/IB2007004505
申请日：2007-12-20
申请人： SKYPE LTD , VAFIN RENAT , LINDBLOM JONAS , VAALGAMAA MARKUS
发明人： VAFIN RENAT , LINDBLOM JONAS , VAALGAMAA MARKUS
IPC分类号： G10L25/78 , H04J3/06
CPC分类号： G10L25/78 , G10L2025/783 , H04M1/2535
摘要： A method of receiving at a terminal a first signal transmitted via a communication network, said method comprising the steps of; receiving at the terminal the first signal comprising a plurality of data elements; analysing characteristics of the first signal; receiving from a user of the terminal a second signal to be transmitted from the terminal; analysing characteristics of the second signal to detect audio activity in the second signal; and applying a delay between receiving at the terminal and outputting from the terminal at least one of said plurality of data elements; and adjusting the delay based on the analysed characteristics of the first signal and on the detection of audio activity in the second signal.
摘要翻译：一种在终端处接收经由通信网络发送的第一信号的方法，所述方法包括以下步骤：在所述终端处接收包括多个数据元素的所述第一信号; 分析第一信号的特性; 从终端的用户接收要从终端发送的第二信号; 分析所述第二信号的特性以检测所述第二信号中的音频活动; 以及在所述终端处的接收和从所述终端输出所述多个数据元素中的至少一个数据元素之间施加延迟; 以及基于所分析的第一信号的特性和第二信号中音频活动的检测来调整延迟。

5. 发明申请

WO2008114087A2 METHOD OF TRANSMITTING DATA IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中传输数据的方法
公开(公告)号：WO2008114087A2
公开(公告)日：2008-09-25
申请号：PCT/IB2007/004505
申请日：2007-12-20
申请人： SKYPE LIMITED , VAFIN, Renat , LINDBLOM, Jonas , VAALGAMAA, Markus
发明人： VAFIN, Renat , LINDBLOM, Jonas , VAALGAMAA, Markus
IPC分类号： G10L11/02 , H04J3/06
CPC分类号： G10L25/78 , G10L2025/783 , H04M1/2535
摘要： A method of receiving at a terminal a first signal transmitted via a communication network, said method comprising the steps of; receiving at the terminal the first signal comprising a plurality of data elements; analysing characteristics of the first signal; receiving from a user of the terminal a second signal to be transmitted from the terminal; analysing characteristics of the second signal to detect audio activity in the second signal; and applying a delay between receiving at the terminal and outputting from the terminal at least one of said plurality of data elements; and adjusting the delay based on the analysed characteristics of the first signal and on the detection of audio activity in the second signal.
摘要翻译：一种在终端接收经由通信网络发送的第一信号的方法，所述方法包括以下步骤：在终端处接收包括多个数据元素的第一信号; 分析第一信号的特性; 从所述终端的用户接收要从所述终端发送的第二信号; 分析第二信号的特性以检测第二信号中的音频活动; 以及在所述终端接收之间应用延迟并从所述终端输出所述多个数据元素中的至少一个; 以及基于所述第一信号的分析特性和所述第二信号中的音频活动的检测来调整所述延迟。

6. 发明申请

WO2012175721A1 LOW COMPLEXITY MODE SELECTION 审中-公开
标题翻译：低复杂度模式选择
公开(公告)号：WO2012175721A1
公开(公告)日：2012-12-27
申请号：PCT/EP2012/062162
申请日：2012-06-22
申请人： SKYPE , NILSSON, Mattias , VAFIN, Renat , ANDERSEN, Soren Vang
发明人： NILSSON, Mattias , VAFIN, Renat , ANDERSEN, Soren Vang
IPC分类号： H04N7/26 , H04N7/64
CPC分类号： H04N19/89 , H04N19/102 , H04N19/103 , H04N19/134 , H04N19/147 , H04N19/154 , H04N19/166 , H04N19/176 , H04N19/19
摘要： A method of encoding an outgoing video stream comprising a plurality of frames, each frame comprising a plurality of image portions, the method comprising: for each target image portion to be encoded, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion and a measure of bit rate required to encode the target image portion; encoding the target image portion into the outgoing video stream using the selected encoding mode; and transmitting the encoded outgoing video stream over a lossy channel. The estimate of distortion comprises a first term representing source coding distortion, and a bias term representing an estimate of distortion that would be experienced due to loss over said channel. The bias term is determined based on a trained parameter trained based on a sample video stream.
摘要翻译：一种编码包括多个帧的输出视频流的方法，每个帧包括多个图像部分，所述方法包括：对于要编码的每个目标图像部分，通过优化功能来选择一组编码模式中的优选的一个包括失真的估计和对目标图像部分进行编码所需的比特率的度量; 使用所选择的编码模式将目标图像部分编码为输出视频流; 以及通过有损的信道发送编码的输出视频流。失真的估计包括表示源编码失真的第一项和表示由于所述信道上的损失而将经历的失真估计的偏置项。偏置项是基于基于样本视频流训练的训练参数来确定的。

7. 发明申请

WO2011101451A1 DATA COMPRESSION FOR VIDEO 审中-公开
标题翻译：数据压缩视频
公开(公告)号：WO2011101451A1
公开(公告)日：2011-08-25
申请号：PCT/EP2011/052462
申请日：2011-02-18
申请人： SKYPE LIMITED , BIVOLARSKY, Lazar , VAFIN, Renat , NILSSON, Mattias , ANDERSEN, Soren Vang
发明人： BIVOLARSKY, Lazar , VAFIN, Renat , NILSSON, Mattias , ANDERSEN, Soren Vang
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/115 , H04N19/105 , H04N19/107 , H04N19/119 , H04N19/146 , H04N19/176 , H04N19/46 , H04N19/48 , H04N19/59 , H04N19/61
摘要： A method of compressing video data, the method comprising: providing image data for each of a plurality of image portions; determining an index value for each of said image portions based on the respective image data; for a target image portion to be encoded, identifying a matching image portion having an index value within a search threshold of the index value of the target image portion; and generating difference data for the target image portion relative to the matching image portion, and including the difference data in an encoded video signal.
摘要翻译：一种压缩视频数据的方法，所述方法包括：为多个图像部分中的每一个提供图像数据; 基于各个图像数据确定每个所述图像部分的索引值; 对于要编码的目标图像部分，识别具有在目标图像部分的索引值的搜索阈值内的索引值的匹配图像部分; 以及针对所述目标图像部分相对于所述匹配图像部分生成差异数据，并且将所述差分数据包括在编码视频信号中。

8. 发明申请

WO2008114090A3 METHOD OF TRANSMITTING DATA IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中传输数据的方法
公开(公告)号：WO2008114090A3
公开(公告)日：2009-06-04
申请号：PCT/IB2007004558
申请日：2007-12-20
申请人： SKIPE LTD , LINDBLOM JONAS , VAFIN RENAT
发明人： LINDBLOM JONAS , VAFIN RENAT
IPC分类号： H04L1/00 , G10L19/22
CPC分类号： H04L1/0014 , G10L19/22 , H04L1/0086
摘要： A method of encoding a signal to be transmitted from a terminal via a channel in a communication network comprising; receiving the signal at the terminal; determining characteristics of the channel; encoding a first portion of the signal in accordance with a first encoding method to produce a first encoded signal portion; encoding a second portion of the signal in accordance with a second encoding method to produce a second encoded signal portion; wherein the first portion of the signal encoded in accordance with the first encoding method is dependent on the determined characteristics of the channel; and transmitting the first encoded signal portion and the second encoded signal portion via the channel.
摘要翻译：一种通过通信网络经由信道从终端进行编码的信号的方法，包括：在终端接收信号; 确定通道的特性; 根据第一编码方法编码信号的第一部分以产生第一编码信号部分; 根据第二编码方法编码信号的第二部分以产生第二编码信号部分; 其中根据第一编码方法编码的信号的第一部分取决于所确定的信道特性; 以及经由所述信道发送所述第一编码信号部分和所述第二编码信号部分。

9. 发明申请

WO2008114084A2 METHOD OF TRANSMITTING DATA IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中传输数据的方法
公开(公告)号：WO2008114084A2
公开(公告)日：2008-09-25
申请号：PCT/IB2007004443
申请日：2007-12-20
申请人： SKYPE LTD , RODBRO CHRISTOFFER , JENSEN SOREN SKAK , LINDBLOM JONAS , VAFIN RENAT , ANDERSEN SOREN VANG
发明人： RODBRO CHRISTOFFER , JENSEN SOREN SKAK , LINDBLOM JONAS , VAFIN RENAT , ANDERSEN SOREN VANG
IPC分类号： H04L12/56
CPC分类号： H04L12/6418 , H04L12/66 , H04L2012/6489
摘要： A method of processing a signal received at a node in a network, comprising the steps of; receiving the signal at the node; determining characteristics of a first part of the signal; determining characteristics of a second part of the signal that is subsequent to the first part of the signal; quantifying an effect on the signal caused by applying an action to the first part of the signal, based on characteristics of the first part of the signal; quantifying an effect on the signal caused by not applying the action on the first part of the signal, based on characteristics of the second part of the signal; applying the action to the first part of the signal if it is determined that the effect on the signal caused by applying the action to the first part of the signal is less detrimental to at least one measure of the signal quality than the effect on the signal caused by not applying the action to the first part of the signal.
摘要翻译：一种处理在网络中的节点处接收的信号的方法，包括以下步骤：在节点处接收信号; 确定信号的第一部分的特性; 确定信号的第一部分之后的信号的第二部分的特性; 基于信号的第一部分的特性量化对信号施加动作所引起的对信号的影响; 基于信号的第二部分的特性量化对不对信号的第一部分施加动作而引起的信号的影响; 如果确定通过对信号的第一部分施加动作而对信号产生的影响对信号质量的至少一个度量的影响比对信号的影响更小，则将该动作应用于信号的第一部分由于不对信号的第一部分采取行动造成的。

10. 发明申请

WO2008110870A3 SPEECH CODING SYSTEM AND METHOD 审中-公开
公开(公告)号：WO2008110870A3
公开(公告)日：2008-09-18
申请号：PCT/IB2007/004491
申请日：2007-12-20
申请人： SKYPE LIMITED , NILSSON, Mattias , LINDBLOM, Jonas , VAFIN, Renat , ANDERSEN, Soren, Vang
发明人： NILSSON, Mattias , LINDBLOM, Jonas , VAFIN, Renat , ANDERSEN, Soren, Vang
IPC分类号： G10L19/00
摘要： A system for enhancing a signal regenerated from an encoded audio signal. The system comprises a decoder arranged to receive the encoded audio signal and produce a decoded audio signal, a feature extraction means arranged to receive at least one of the decoded and encoded audio signal and extract at least one feature from at least one of the decoded and encoded audio signal, a mapping means arranged to map the at least one feature to an enhancement signal and operable to generate and output the enhancement signal, whereby the enhancement signal has a frequency band that is within the decoded audio signal frequency band, and a mixing means arranged to receive the decoded audio signal and the enhancement signal and mix the enhancement signal with the decoded audio signal.

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