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1. 发明公开

EP2637405A1 Adaptive bypass mode for coding absolute values of transform coefficients 有权转让
标题翻译： Adaptiver Bypass-Modefürdie Kodierung absoluter Werte von Transformationskoeffizienten
公开(公告)号：EP2637405A1
公开(公告)日：2013-09-11
申请号：EP12164309.2
申请日：2012-04-16
申请人： BlackBerry Limited , Nguyen, Nguyen , Ji, Tianying , He, Dake
发明人： Nguyen, Nguyen , Ji, Tianying , He, Dake
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50 , H03M7/40
CPC分类号： H03M7/4006 , H03M7/4018 , H03M7/6011 , H03M7/6017 , H04N19/13 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/182 , H04N19/61
摘要： Methods and devices for reconstructing coefficient levels from a bitstream of encoded video data for a coefficient group in a transform unit, using adaptive-threshold-based level coding. Threshold is set based upon level information from one or more previously-reconstructed coefficient groups in the transform unit. Threshold may be maximum number of level flags to decode for the coefficient group. Level information may include number of level flags decoded in previous coefficient groups. Previously-reconstructed coefficient groups may include coefficient group to the right and below the current coefficient group.
摘要翻译：用于使用基于自适应阈值的电平编码来从变换单元中的系数组的编码视频数据的比特流重建系数级的方法和装置。基于来自变换单元中的一个或多个先前重构的系数组的级别信息设置阈值。阈值可以是用于系数组解码的最大级别标志数。电平信息可以包括在先前系数组中解码的电平标志的数量。先前重建的系数组可以包括当前系数组右侧和下面的系数组。

2. 发明申请

WO2018082848A1 COMMUNICATION WITH I-Q DECOUPLED OFDM MODULATION 审中-公开
标题翻译：与I-Q解耦OFDM调制的通信
公开(公告)号：WO2018082848A1
公开(公告)日：2018-05-11
申请号：PCT/EP2017/074797
申请日：2017-09-29
申请人： BLACKBERRY LIMITED , QU, Shouxing , HE, Dake , MCCANN, Stephen
发明人： QU, Shouxing , HE, Dake , MCCANN, Stephen
IPC分类号： H04L27/26
摘要： In some examples, an apparatus includes a transmitter configured to apply input data as a frequency-domain data sequence to modulate a set of subcarriers, and separate the frequency-domain data sequence into a first subsequence of elements and a second subsequence of elements. A first conjugate symmetric subsequence that is based on inserting a zero value into the first subsequence is formed, and a second conjugate symmetric subsequence that is based on inserting a zero value into the second subsequence is formed, where the zero values are inserted at different positions in the first and second subsequences. A time-domain sequence comprising a first component that is a function of the first conjugate symmetric subsequence, and a second component that is a function of the second conjugate symmetric subsequence is generated.
摘要翻译：在一些示例中，一种装置包括发射机，该发射机被配置为将输入数据作为频域数据序列来应用以调制一组副载波，并且将该频域数据序列分离为元素的第一子序列和元素的第二个子序列。形成基于将零值插入到第一子序列中的第一共轭对称子序列，并且形成基于将零值插入到第二子序列中的第二共轭对称子序列，其中零值插入到不同位置在第一和第二子序列中。生成包括作为第一共轭对称子序列的函数的第一分量和作为第二共轭对称子序列的函数的第二分量的时域序列。

3. 发明申请

WO2012174636A1 COMPRESSING IMAGE DATA 审中-公开
标题翻译：压缩图像数据
公开(公告)号：WO2012174636A1
公开(公告)日：2012-12-27
申请号：PCT/CA2011/050384
申请日：2011-06-22
申请人： RESEARCH IN MOTION LIMITED , HE, Dake , YU, Xiang , WANG, Jing
发明人： HE, Dake , YU, Xiang , WANG, Jing
IPC分类号： G06T9/00 , H04N7/50
CPC分类号： H04N19/48 , H04N19/105 , H04N19/176 , H04N19/463 , H04N19/50
摘要： Methods, systems, and computer programs for encoding and decoding image are described. In some aspects, an input data block and a prediction data block are accessed. A projection factor is generated based on a projection of the input data block onto the prediction data block. A scaled prediction data block is generated by multiplying the projection factor by the prediction data block. A residual data block is generated based on a difference between the input data block and the scaled prediction data block. In some aspects, a prediction data block, a residual data block, and a projection factor associated with the residual data block are accessed. A scaled prediction data block is generated by multiplying the projection factor by the prediction data block. An output data block is generated by summing the residual data block and the scaled prediction data block.
摘要翻译：描述用于编码和解码图像的方法，系统和计算机程序。在一些方面，访问输入数据块和预测数据块。基于将输入数据块投影到预测数据块上而产生投影因子。通过将投影因子乘以预测数据块来生成缩放预测数据块。基于输入数据块和缩放预测数据块之间的差异生成残留数据块。在一些方面，访问与残留数据块相关联的预测数据块，残差数据块和投影因子。通过将投影因子乘以预测数据块来生成缩放预测数据块。通过对残差数据块和缩放预测数据块求和来生成输出数据块。

4. 发明申请

WO2012139192A3 METHODS AND DEVICES FOR CODING AND DECODING THE POSITION OF THE LAST SIGNIFICANT COEFFICIENT 审中-公开
公开(公告)号：WO2012139192A3
公开(公告)日：2012-10-18
申请号：PCT/CA2011/050200
申请日：2011-04-15
申请人： RESEARCH IN MOTION LIMITED , HE, Dake , WANG, Jing
发明人： HE, Dake , WANG, Jing
IPC分类号： H04N7/50 , H03M7/30
摘要： Methods and devices are described for entropy coding data using an entropy coder to encode quantized transform domain coefficient data. Last significant coefficient information is signaled in the bitstream using two-dimensional coordinates for the last significant coefficient. The context for bins of one of the coordinates is based, in part, upon the value of the other of the coordinates. In one case, instead of signaling last significant coefficient information, the number of non-zero coefficients is binarized and entropy encoded.

5. 发明申请

WO2012139192A2 METHODS AND DEVICES FOR CODING AND DECODING THE POSITION OF THE LAST SIGNIFICANT COEFFICIENT 审中-公开
标题翻译：用于编码和解码最后一个重要系数位置的方法和设备
公开(公告)号：WO2012139192A2
公开(公告)日：2012-10-18
申请号：PCT/CA2011050200
申请日：2011-04-15
申请人： RESEARCH IN MOTION LTD , HE DAKE , WANG JING
发明人： HE DAKE , WANG JING
CPC分类号： H04N19/436 , H04N19/18 , H04N19/61 , H04N19/70 , H04N19/91
摘要： Methods and devices are described for entropy coding data using an entropy coder to encode quantized transform domain coefficient data. Last significant coefficient information is signaled in the bitstream using two-dimensional coordinates for the last significant coefficient. The context for bins of one of the coordinates is based, in part, upon the value of the other of the coordinates. In one case, instead of signaling last significant coefficient information, the number of non-zero coefficients is binarized and entropy encoded.
摘要翻译：描述了使用熵编码器对数据进行熵编码以编码量化的变换域系数数据的方法和设备。使用最后一个有效系数的二维坐标在比特流中发信号通知最后的有效系数信息。其中一个坐标的箱的上下文部分基于另一个坐标的值。在一种情况下，不是发信号通知最后的有效系数信息，而是非零系数的数目被二进制化和熵编码。

6. 发明申请

WO2012019297A1 METHOD AND DEVICE FOR COMPRESSION OF BINARY SEQUENCES BY GROUPING MULTIPLE SYMBOLS 审中-公开
标题翻译：通过分组多个符号来压缩二进制序列的方法和装置
公开(公告)号：WO2012019297A1
公开(公告)日：2012-02-16
申请号：PCT/CA2011/050466
申请日：2011-07-28
申请人： RESEARCH IN MOTION LIMITED , KORODI, Gergely Ferenc , HE, Dake
发明人： KORODI, Gergely Ferenc , HE, Dake
IPC分类号： H03M7/30 , H04N7/50
CPC分类号： H03M7/4056 , H03M7/4006 , H03M7/42 , H04N19/91 , H04N19/96
摘要： A method for encoding an input sequence of symbols to produce a bitstream and a method of decoding the bitstream to generate a reconstructed binary sequence. Encoding employs 2 L -ary encoding trees having codewords associated with leaf nodes. A context model is used to select an encoding tree corresponding to an estimated probability at the encoder. The same context model is used by the decoder to select a decoding tree. The decoder interleaves bits from decoded sequences of length-L strings associated with different estimated probabilities, based on the context model.
摘要翻译：用于对输入的符号序列进行编码以产生比特流的方法以及对比特流进行解码以产生重构的二进制序列的方法。编码采用具有与叶节点相关联的码字的2L方编码树。上下文模型用于在编码器处选择与估计概率相对应的编码树。解码器使用相同的上下文模型来选择解码树。解码器基于上下文模型，对与不同估计概率相关联的长度L字符串的解码序列进行交织。

7. 发明申请

WO2012003584A1 METHODS AND DEVICES FOR DATA COMPRESSION USING ADAPTIVE RECONSTRUCTION LEVELS 审中-公开
标题翻译：使用自适应重建级别进行数据压缩的方法和设备
公开(公告)号：WO2012003584A1
公开(公告)日：2012-01-12
申请号：PCT/CA2011/050401
申请日：2011-06-30
申请人： RESEARCH IN MOTION LIMITED , HE, Dake , YU, Xiang , YANG, En-Hui
发明人： HE, Dake , YU, Xiang , YANG, En-Hui
IPC分类号： H03M7/30 , H04N7/50
CPC分类号： H04N19/192 , H04N19/126 , H04N19/147 , H04N19/176 , H04N19/19
摘要： Encoding and decoding methods that perform quantization using adaptive reconstruction levels are presented. The reconstruction levels for a given partitioning of the data space may be selected based upon the distribution of data points within each sub-part defined by the partitioning. In some cases, the adaptive reconstruction levels may be based upon an average of the data points within each sub-part. In some cases, the adaptive reconstruction levels may be selected using a rate-distortion analysis including the quantization distortion associated with the levels versus the data points and the rate associated with transmitting the encoded adaptive reconstruction levels. The methods relate to data compression in a range of applications including audio, images and video.
摘要翻译：提出了使用自适应重建级别执行量化的编码和解码方法。可以基于由分区定义的每个子部分内的数据点的分布来选择数据空间的给定划分的重建级别。在一些情况下，自适应重建级别可以基于每个子部分内的数据点的平均值。在一些情况下，可以使用包括与电平相对于数据点相关联的量化失真的速率失真分析以及与发送编码的自适应重建级别相关联的速率来选择自适应重建级别。该方法涉及包括音频，图像和视频在内的一系列应用中的数据压缩。

8. 发明申请

WO2008009518A1 ENCODING AND DECODING QUANTIZED VIDEO SEQUENCE WITH WYNER-ZIV COMPRESSION 审中-公开
标题翻译：用WYNER-ZIV压缩编码和解码定量视频序列
公开(公告)号：WO2008009518A1
公开(公告)日：2008-01-24
申请号：PCT/EP2007/055889
申请日：2007-06-14
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , HE, Dake , SHEININ, Vadim
发明人： HE, Dake , SHEININ, Vadim
IPC分类号： H03M7/30
CPC分类号： H03M7/3084 , H03M13/1171 , H04N19/00
摘要： A computer-based method for encoding and decoding quantized sequences in Wyner-Ziv coding of video. The method takes as input to an encoder a sequence of quantized data from a finite alphabet, the sequence comprising a video frame. Another sequence of data, decoded from the prior video frame, is input to a decoder. A statistical model describing the statistical relationship between the quantized input sequence to the encoder and the input sequence to the decoder is input to both the encoder and the decoder. A minimum field size is estimated from the statistical model at the encoder and the decoder separately. A bi-partite graph is provided, having variable nodes and check nodes, in which the alphabet of each check node is the minimum field size. At the output of the check nodes of the bi-partite graph there is generated a syndrome sequence of data in response to the quantized sequence fed into the variable nodes. Then the same bi-partite graph is used in an iterative process at the decoder to reconstruct the quantized sequence by repeatedly seeking to generate an output at the check nodes equal to the syndrome sequence.
摘要翻译：一种基于计算机的方法，用于对视频的Wyner-Ziv编码中的量化序列进行编码和解码。该方法将来自有限字母表的量化数据序列作为编码器的输入，该序列包括视频帧。从先前视频帧解码的另一数据序列被输入到解码器。描述编码器的量化输入序列与解码器的输入序列之间的统计关系的统计模型被输入到编码器和解码器。分别从编码器和解码器的统计模型估计最小场尺寸。提供了一个双分图，具有可变节点和校验节点，其中每个校验节点的字母表是最小字段大小。在双分图的校验节点的输出处，响应于馈送到可变节点的量化序列而产生数据的校正子序列。然后，在解码器处的迭代过程中使用相同的双分图，以通过重复地在校验节点处产生等于校正子序列的输出来重建量化序列。

9. 发明申请

WO2013010248A8 ADAPTIVE FILTERING BASED ON PATTERN INFORMATION 审中-公开
标题翻译：基于模式信息的自适应滤波
公开(公告)号：WO2013010248A8
公开(公告)日：2013-10-24
申请号：PCT/CA2011050446
申请日：2011-07-21
申请人： RESEARCH IN MOTION LTD , LIU YING , HE DAKE
发明人： LIU YING , HE DAKE
IPC分类号： H04N7/26 , H04N7/24
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/154 , H04N19/17
摘要： Encoding video data that includes a frame includes: generating a reconstructed frame from compressed data for the frame, partitioning at least some pixels of the reconstructed frame into a plurality of segments of one or more pixels, based at least in part on pattern information for individual pixels, and generating respective filter information for each of one or more of the plurality of segments. Encoded video data is generated that includes the compressed data for the frame and the generated filter information.
摘要翻译：对包括帧的视频数据进行编码包括：至少部分地基于用于个体的图案信息，从所述帧的压缩数据生成重建帧，将所述重构帧的至少一些像素划分为一个或多个像素的多个片段并且为多个片段中的一个或多个片段中的每个片段的每一个片段生成相应的滤色器信息。生成包括帧的压缩数据和生成的过滤器信息的编码视频数据。

10. 发明申请

WO2012096671A1 MOBILE MEDIA CONTENT DELIVERY 审中-公开
标题翻译：移动媒体内容交付
公开(公告)号：WO2012096671A1
公开(公告)日：2012-07-19
申请号：PCT/US2011/021322
申请日：2011-01-14
申请人： RESEARCH IN MOTION LIMITED , SHEYNMAN, Arnold , PECEN, Mark , VILLAFLOR, Marcel , HE, Dake
发明人： SHEYNMAN, Arnold , PECEN, Mark , VILLAFLOR, Marcel , HE, Dake
IPC分类号： H04L29/06
CPC分类号： H04L65/601
摘要： A system and method are disclosed for managing the wireless delivery of streaming media content to a user equipment (UE) device. A UE device establishes a network connection with a local wireless network, which in turn is associated with a wireless network region with a corresponding data infrastructure server. The UE device then requests predetermined streaming media content from the data infrastructure server. A determination is made whether the requested streaming media content is stored in transcoded form on the data infrastructure server. If so, then a control information network is implemented to transmit and receive streaming media content control data between the UE device and the data infrastructure server. In turn, the streaming media content control data is used by the data infrastructure server to control the transmission of the transcoded streaming media content over a data network for delivery to the UE device.
摘要翻译：公开了一种用于管理流媒体内容到用户设备（UE）设备的无线传送的系统和方法。 UE设备与本地无线网络建立网络连接，本地无线网络又与具有相应数据基础设施服务器的无线网络区域相关联。然后，UE设备从数据基础设施服务器请求预定的流媒体内容。确定所请求的流媒体内容是否以代码转换形式存储在数据基础架构服务器上。如果是这样，则实施控制信息网络以在UE设备和数据基础设施服务器之间传送和接收流媒体内容控制数据。反过来，数据基础架构服务器使用流媒体内容控制数据来控制经过数据网络的代码转换的流媒体内容的传输，以传送给UE设备。

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