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1. 发明申请

WO2012015649A3 JOINT CODING OF BI-DIRECTIONAL MOTION VECTORS IN GPB FRAMES 审中-公开
公开(公告)号：WO2012015649A3
公开(公告)日：2012-02-02
申请号：PCT/US2011/044730
申请日：2011-07-20
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong , WANG, Xianglin
发明人： CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong , WANG, Xianglin
IPC分类号： H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50
摘要： This disclosure relates to techniques for reducing a cost of coding prediction information in video coding. Video blocks in a generalized P/B (GPB) frame are encoded using up to two motion vectors calculated from reference pictures in two separate reference picture lists that are identical. Video blocks of a GPB frame may, therefore, be encoded using a bidirectional prediction mode with a first motion vector from a reference picture in a first reference picture list and a second motion vector from the same or substantially similar reference picture in a second reference picture list. The techniques include jointly coding the first and second motion vectors for a video block of a GPB frame. The techniques include coding the first motion vector relative to a first motion predictor generated from a motion vector of a neighboring block, and coding the second motion vector relative to the first motion vector.

2. 发明申请

WO2013109946A1 SIGNALING OF DEBLOCKING FILTER PARAMETERS IN VIDEO CODING 审中-公开
标题翻译：在视频编码中消除滤波器参数的信号
公开(公告)号：WO2013109946A1
公开(公告)日：2013-07-25
申请号：PCT/US2013/022230
申请日：2013-01-18
申请人： QUALCOMM INCORPORATED
发明人： VAN DER AUWERA, Geert , WANG, Ye-Kui , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/86 , H04N19/105 , H04N19/117 , H04N19/124 , H04N19/13 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/184 , H04N19/43 , H04N19/46 , H04N19/61 , H04N19/70
摘要： This disclosure describes techniques for signaling deblocking filter parameters for a current slice of video data with reduced bitstream overhead. Deblocking filter parameters may be coded in one or more of a picture layer parameter set and a slice header. The techniques reduce a number of bits used to signal the deblocking filter parameters by coding a first syntax element that indicates whether deblocking filter parameters are present in both the picture layer parameter set and the slice header, and only coding a second syntax element in the slice header when both sets of deblocking filter parameters are present. Coding the second syntax element is eliminated when deblocking filter parameters are present in only one of the picture layer parameter set or the slice header. The second syntax element indicates which set of deblocking filter parameters to use to define a deblocking filter applied to a current slice.
摘要翻译：本公开描述了用于以减少的比特流开销为视频数据的当前切片信号去块滤波器参数的信号的技术。去块滤波器参数可以在图像层参数集和片头中的一个或多个中被编码。这些技术通过编码指示去块滤波器参数是否存在于图像层参数集和片头中的第一语法元素来减少用于通知去块滤波器参数的位数，并且仅对切片中的第二语法元素进行编码当存在两组去块滤波器参数时，头部。当去块滤波器参数仅存在于图像层参数集或片头中的一个时，消除了第二语法元素的编码。第二个语法元素指出哪一组去块滤波器参数用于定义应用于当前片的去块滤波器。

3. 发明申请

WO2012122480A1 VIDEO CODING TECHNIQUES FOR CODING DEPENDENT PICTURES AFTER RANDOM ACCESS 审中-公开
标题翻译：视频编码技术在随机访问后编码依赖图像
公开(公告)号：WO2012122480A1
公开(公告)日：2012-09-13
申请号：PCT/US2012/028490
申请日：2012-03-09
申请人： QUALCOMM INCORPORATED , CHEN, Ying , COBAN, Muhammed Zeyd , CHEN, Peisong , KARCZEWICZ, Marta
发明人： CHEN, Ying , COBAN, Muhammed Zeyd , CHEN, Peisong , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/70 , G06T9/004 , H04N19/503 , H04N19/61
摘要： In general, this disclosure describes techniques for coding video data for random access. In particular, this disclosure proposes to code a syntax element that indicates if a dependent picture may be successfully decoded in the event of a random access request to a clean decoding refresh (CDR) picture and may be required for decoding the pictures following the clean decoding refresh (CDR) picture in display order.
摘要翻译：通常，本公开描述了用于编码用于随机访问的视频数据的技术。特别地，本公开提议编写一个语法元素，该语法元素指示在对干净的解码刷新（CDR）图像的随机访问请求的情况下依赖图像是否可以被成功解码，并且可能需要在干扰解码之后对图像进行解码刷新（CDR）图片显示顺序。

4. 发明申请

WO2012099656A1 COMBINED REFERENCE PICTURE LIST CONSTRUCTION FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的组合参考图片列表构造
公开(公告)号：WO2012099656A1
公开(公告)日：2012-07-26
申请号：PCT/US2011/064225
申请日：2011-12-09
申请人： QUALCOMM Incorporated , CHEN, Ying , COBAN, Muhammed Zeyd , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong
发明人： CHEN, Ying , COBAN, Muhammed Zeyd , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong
IPC分类号： H04N7/26 , H04N7/36 , H04N7/46
CPC分类号： H04N19/577 , H04N19/105 , H04N19/147 , H04N19/176 , H04N19/46 , H04N19/56 , H04N19/573 , H04N19/70
摘要： This disclosure relates to techniques for constructing a combined reference picture list, List C, based on List 0 and List 1, used for uni-directional prediction of video blocks in any direction. The techniques include coding one or more syntax elements defined to indicate construction information for List C, and performing reference picture list construction for List C from List 0 and List 1 based on the syntax elements. The one or more syntax elements may indicate that List C is used for uni-directional prediction, and may also indicate a number of reference pictures identified in List C and a reference index of a reference picture for each entry in List C. Each coded video block of a B slice may have an associated syntax element, i.e., inter_pred_idc, to indicate whether the video block is bi-predicted from List 0 and List 1 (Bi) or uni-directional predicted from List C (Pred_LC).
摘要翻译：本公开涉及用于构建基于列表0和列表1的组合参考图片列表C的技术，其用于在任何方向上对视频块进行单向预测。这些技术包括编码一个或多个语法元素，其定义为指示列表C的构造信息，并且基于语法元素从列表0和列表1执行列表C的参考图像列表构造。一个或多个语法元素可以指示列表C用于单向预测，并且还可以指示列表C中标识的参考图片的数量和列表C中的每个条目的参考图片的参考索引。每个编码视频 B片的块可以具有相关联的语法元素，即inter_pred_idc，以指示视频块是从列表0和列表1（Bi）是双向预测的还是从列表C预测的单向（Pred_LC）。

5. 发明申请

WO2013154912A1 BETA OFFSET CONTROL FOR DEBLOCKING FILTERS IN VIDEO CODING 审中-公开
标题翻译：用于在视频编码中去除滤波器的BETA偏移控制
公开(公告)号：WO2013154912A1
公开(公告)日：2013-10-17
申请号：PCT/US2013/035313
申请日：2013-04-04
申请人： QUALCOMM INCORPORATED
发明人： VAN DER AUWERA, Geert , WANG, Xianglin , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/80 , H04N19/117 , H04N19/134 , H04N19/172 , H04N19/82 , H04N19/86
摘要： Techniques are described for providing continuous control of a deblocking filter for a video block using a beta offset parameter. Deblocking filters are defined based on one or more deblocking decisions. Conventionally, a quantization parameter and a beta offset parameter are used to identify a beta parameter ("β") value that determines threshold values of the deblocking decisions. The value of the beta offset parameter results in a change or increment of the β value. For small increments of the β value, rounding of the threshold values may result in no change and discontinuous control of the deblocking decisions. The techniques include calculating at least one deblocking decision for the deblocking filter according to a threshold value that has been modified based on a multiplier value of the beta offset parameter. The multiplier value applied to the beta offset parameter causes an integer change in the modified threshold value.
摘要翻译：描述了使用β偏移参数来提供用于视频块的去块滤波器的连续控制的技术。去块滤波器基于一个或多个去块决定来定义。常规地，使用量化参数和β偏移参数来识别确定去块决定的阈值的β参数（“β”）值。 β偏移参数的值导致β值的变化或增量。对于β值的小增量，阈值的舍入可能导致解调决定没有变化和不连续的控制。这些技术包括根据已经基于β偏移参数的乘数值修改的阈值来计算去块滤波器的至少一个去块决定。应用于β偏移参数的乘数值会导致修改后的阈值中的整数更改。

6. 发明申请

WO2013070707A1 CODING SIGNIFICANT COEFFICIENT INFORMATION IN TRANSFORM SKIP MODE 审中-公开
标题翻译：编码转换跳转模式中的重要系数信息
公开(公告)号：WO2013070707A1
公开(公告)日：2013-05-16
申请号：PCT/US2012/063876
申请日：2012-11-07
申请人： QUALCOMM INCORPORATED
发明人： JOSHI, Rajan Laxman , SOLE ROJALS, Joel , WANG, Xianglin , KARCZEWICZ, Marta , SEREGIN, Vadim
IPC分类号： H04N7/26
CPC分类号： H04N7/30 , H04N19/12 , H04N19/129 , H04N19/156 , H04N19/196 , H04N19/463 , H04N19/625 , H04N19/70
摘要： This disclosure describes techniques for coding significant coefficient information for a video block in a transform skip mode. The transform skip mode may provide a choice of a two-dimensional transform mode, a horizontal one-dimensional transform mode, a vertical one-dimensional transform mode, or a no transform mode. In other cases, the transform skip mode may provide a choice between a two-dimensional transform mode and a no transform mode. The techniques include selecting a transform skip mode for a video block, and coding significant coefficient information for the video block using a coding procedure defined based at least in part on the selected transform skip mode. Specifically, the techniques include using different coding procedures to code one or more of a position of a last non-zero coefficient and a significance map for the video block in the transform skip mode.
摘要翻译：本公开描述了用于以变换跳过模式对视频块的有效系数信息进行编码的技术。变换跳过模式可以提供二维变换模式，水平一维变换模式，垂直一维变换模式或无变换模式的选择。在其他情况下，变换跳过模式可以提供二维变换模式和无变换模式之间的选择。这些技术包括：选择用于视频块的变换跳过模式，以及使用至少部分地基于所选择的变换跳过模式定义的编码过程来编码视频块的有效系数信息。具体地说，这些技术包括使用不同的编码程序对变换跳过模式中的视频块的最后非零系数的位置和重要性映射中的一个或多个进行编码。

7. 发明申请

WO2012045041A1 ENTROPY CODING COEFFICIENTS USING A JOINT CONTEXT MODEL 审中-公开
标题翻译：使用联合语境模型进行熵编码系统
公开(公告)号：WO2012045041A1
公开(公告)日：2012-04-05
申请号：PCT/US2011/054425
申请日：2011-09-30
申请人： QUALCOMM INCORPORATED , SOLE ROJALS, Joel , JOSHI, Rajan, L. , KARCZEWICZ, Marta
发明人： SOLE ROJALS, Joel , JOSHI, Rajan, L. , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/13 , H04N19/132 , H04N19/14 , H04N19/146 , H04N19/149 , H04N19/176 , H04N19/18 , H04N19/60 , H04N19/625 , H04N19/64 , H04N19/91
摘要： This disclosure describes techniques for performing entropy encoding and decoding of video coefficients using a joint context model shared between transform units having different sizes. For example, the joint context model may be shared between transform units having a first size of 32x32 and transform units having a second size of 16x16. Performing entropy coding using a joint context model shared between transform units having different sizes may reduce an amount of memory necessary to store contexts and probabilities, and reduce computational costs of maintaining context models. In one example, the joint context model may be shared between transform units having the first size with coefficients zeroed out to generate a retained coefficient block having the second size and transform units having the second size. In another example, the joint context model may be shared between transform units having the first size and transform units having the second size.
摘要翻译：本公开描述了使用在具有不同大小的变换单元之间共享的联合上下文模型来执行视频系数的熵编码和解码的技术。例如，联合上下文模型可以在第一大小为32×32的变换单元和第二大小为16×16的变换单元之间共享。使用具有不同大小的变换单元之间共享的联合上下文模型执行熵编码可以减少存储上下文和概率所需的存储量，并且减少维护上下文模型的计算成本。在一个示例中，联合上下文模型可以在具有第一大小的变换单元之间共享以产生具有第二尺寸的保留系数块和具有第二尺寸的变换单元。在另一示例中，联合上下文模型可以在具有第一尺寸的变换单元和具有第二尺寸的变换单元之间共享。

8. 发明申请

WO2012009237A1 VARIABLE LOCALIZED BIT DEPTH INCREASE FOR FIXED-POINT TRANSFORMS IN VIDEO CODING 审中-公开
标题翻译：视频编码中固定点变换的可变本地化位深度增加
公开(公告)号：WO2012009237A1
公开(公告)日：2012-01-19
申请号：PCT/US2011/043462
申请日：2011-07-08
申请人： QUALCOMM INCORPORATED , JOSHI, Rajan, L. , CHIEN, Wei-Jung , KARCZEWICZ, Marta , REZNIK, Yuriy , CHEN, Peisong , CHUANG, Hsiao-Chiang
发明人： JOSHI, Rajan, L. , CHIEN, Wei-Jung , KARCZEWICZ, Marta , REZNIK, Yuriy , CHEN, Peisong , CHUANG, Hsiao-Chiang
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50
CPC分类号： H04N19/42 , H04N19/122 , H04N19/157 , H04N19/176 , H04N19/184 , H04N19/196 , H04N19/46 , H04N19/60 , H04N19/61
摘要： This disclosure describes techniques for mitigating rounding errors in a fixed- point transform associated with video coding by applying a variable localized bit-depth increase at the transform. More specifically, the techniques include selecting a constant value based on a size of a fixed-point transform in a video coding device and applying a variable localized bit-depth increase at the transform with a value equal to the constant value. Applying the variable localized bit-depth increase includes left-shifting a transform input signal by a number of bits equal to the constant value before the fixed- point transform, and right-shifting a transform output signal by a number of bits equal to the constant value after the fixed-point transform. The constant value is selected from a plurality of constant values stored on the video coding device. Each of the constant values is pre-calculated for one of a plurality of different transform sizes supported by the video coding.
摘要翻译：本公开描述了通过在变换处应用可变局部位深增加来减轻与视频编码相关联的定点变换中的舍入误差的技术。更具体地，这些技术包括基于视频编码装置中的定点变换的大小来选择常数值，并且在变换时以等于常数值的值应用可变的局部位深增加。应用可变局部位置深度增加包括将变换输入信号左移到等于定点变换之前的常数值的位数，并且将变换输出信号右移到等于常数的位数定点变换后的值。从存储在视频编码装置上的多个常数值中选择常数值。对于由视频编码支持的多个不同的变换大小之一，预先计算每个常数值。

9. 发明申请

WO2013070375A1 HANDS-FREE AUGMENTED REALITY FOR WIRELESS COMMUNICATION DEVICES 审中-公开
标题翻译：无线通信设备的无人值守现实
公开(公告)号：WO2013070375A1
公开(公告)日：2013-05-16
申请号：PCT/US2012/059584
申请日：2012-10-10
申请人： QUALCOMM INCORPORATED
发明人： FORUTANPOUR, Babak , VELARDE, Ruben M. , BEDNAR, David L. , MOMEYER, Brian Lee
IPC分类号： G06T11/00 , G06T3/40 , G06F17/30
CPC分类号： G06T11/00 , G06F17/30244 , G06T3/4038 , G06T19/006
摘要： This disclosure relates to techniques for providing hands-free augmented reality on a wireless communication device (WCD). According to the techniques, an application processor within the WCD executes an augmented reality (AR) application to receive a plurality of image frames and convert the plurality of image frames into a single picture comprising the plurality of image frames stitched together to represent a scene. The WCD executing the AR application then requests AR content for the scene represented in the single picture from an AR database server, receives AR content for the scene from the AR database server, and processes the AR content to overlay the single picture for display to a user on the WCD. In this way, the user may comfortably look at the single picture with the overlaid AR content on a display of the WCD to learn more about the scene represented in the single picture.
摘要翻译：本公开涉及用于在无线通信设备（WCD）上提供免提增强现实的技术。根据该技术，WCD中的应用处理器执行增强现实（AR）应用以接收多个图像帧，并将多个图像帧转换为包括拼接在一起的多个图像帧以表示场景的单个图像。执行AR应用的WCD然后从AR数据库服务器请求在单个图像中表示的场景的AR内容，从AR数据库服务器接收场景的AR内容，并且处理AR内容以将单个图片叠加到显示器用户在WCD上。以这种方式，用户可以在WCD的显示器上舒适地观看具有覆盖的AR内容的单个图像，以更多地了解在单个图像中表示的场景。

10. 发明申请

WO2013043282A1 MULTIMEDIA INTERFACE WITH CONTENT PROTECTION IN A WIRELESS COMMUNICATION DEVICE 审中-公开
标题翻译：在无线通信设备中具有内容保护的多媒体接口
公开(公告)号：WO2013043282A1
公开(公告)日：2013-03-28
申请号：PCT/US2012/051178
申请日：2012-08-16
申请人： QUALCOMM INCORPORATED , RABII, Khosro M. , NAIK, Jatin
发明人： RABII, Khosro M. , NAIK, Jatin
IPC分类号： G09G5/00 , H04M1/00 , H04N17/00 , H04L12/40
CPC分类号： G06F11/3485 , G06F1/3206 , G09G5/006 , G09G2330/021 , G09G2370/12 , H04L12/6418
摘要： In general, this disclosure relates to techniques for management of a multimedia connection between a wireless communication device (WCD) and one or more output devices. The connection may be a multimedia interface connection with content protection, e.g., High Definition Multimedia Interface (HDMI). In some cases, the multimedia interface connection with content protection may be inactive because the output device is no longer connected or the multimedia application is stopped or paused. The techniques include detecting a use mode of the multimedia interface connection with content protection between the WCD and one or more output devices. When the use mode of the multimedia interface connection with content protection is inactive, the WCD may reduce at least one of content processing or content protection processing. In this way, the techniques may reduce battery power consumption from multimedia processing by the WCD.
摘要翻译：一般来说，本公开涉及用于管理无线通信设备（WCD）和一个或多个输出设备之间的多媒体连接的技术。该连接可以是具有内容保护的多媒体接口连接，例如高清多媒体接口（HDMI）。在某些情况下，具有内容保护的多媒体接口连接可能不活跃，因为输出设备不再连接或多媒体应用程序停止或暂停。这些技术包括通过WCD与一个或多个输出设备之间的内容保护来检测多媒体接口连接的使用模式。当具有内容保护的多媒体接口连接的使用模式不活动时，WCD可以减少内容处理或内容保护处理中的至少一个。这样，这些技术可以通过WCD的多媒体处理来减少电池的功耗。

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