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1. 发明申请

US20060146830A1 Use of frame caching to improve packet loss recovery 有权
标题翻译：使用帧缓存来改善丢包恢复
公开(公告)号：US20060146830A1
公开(公告)日：2006-07-06
申请号：US11027294
申请日：2004-12-30
申请人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shankar Regunathan , Thomas Holcomb
发明人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shankar Regunathan , Thomas Holcomb
IPC分类号： H04L12/56 , H04J3/24
CPC分类号： H04N19/89 , H04N19/103 , H04N19/124 , H04N19/166 , H04N19/172 , H04N19/188 , H04N19/46 , H04N19/573 , H04N19/61 , H04N19/91
摘要： Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.
摘要翻译：公开了使用帧缓存来改善丢包恢复的各种新的和不明显的装置和方法。所公开的实施例之一是用于在编码器及其对应的解码器内使用周期性和同步帧缓存的方法。当解码器发现分组丢失时，它通知编码器，然后编码器基于存储在编码器和解码器的共享帧之一来生成帧。当解码器接收到该生成的帧时，它可以使用其本地缓存的帧进行解码。

2. 发明申请

US20050152457A1 Signaling and repeat padding for skip frames 有权
标题翻译：用于跳帧的信令和重复填充
公开(公告)号：US20050152457A1
公开(公告)日：2005-07-14
申请号：US10987521
申请日：2004-11-12
申请人： Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
发明人： Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
IPC分类号： H04N7/26 , H04N7/36 , H04N7/50 , H04N7/12
CPC分类号： H04N19/86 , H04N19/117 , H04N19/124 , H04N19/13 , H04N19/146 , H04N19/152 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/179 , H04N19/184 , H04N19/46 , H04N19/51 , H04N19/523 , H04N19/61 , H04N19/70 , H04N19/82
摘要： A video codec efficiently signals that a frame is identical to its reference frame, such that separate coding of its picture content is skipped. Information that a frame is skipped is represented jointly in a coding table of a frame coding type element for bit rate efficiency in signaling. Further, the video codec signals the picture type (e.g., progressive or interlaced) of skipped frames, which permits different repeat padding methods to be applied according to the picture type.
摘要翻译：视频编解码器有效地发信号通知帧与其参考帧相同，从而跳过其图像内容的单独编码。帧跳过的信息在信令中的比特率效率的帧编码型元件的编码表中联合表示。此外，视频编解码器针对跳过的帧的图像类型（例如，逐行或隔行扫描）进行信号，这允许根据图像类型应用不同的重复填充方法。

3. 发明申请

US20050083218A1 Signaling for field ordering and field/frame display repetition 有权
标题翻译：信令用于场排序和场/帧显示重复
公开(公告)号：US20050083218A1
公开(公告)日：2005-04-21
申请号：US10934117
申请日：2004-09-04
申请人： Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb , Kunal Mukerjee , Pohsiang Hsu
发明人： Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb , Kunal Mukerjee , Pohsiang Hsu
IPC分类号： G06K9/36 , H03M7/40 , H03M7/46 , H04N7/12 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/50
CPC分类号： H04N19/93 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86
摘要： A decoder processes a first bitstream element (e.g., a pull-down flag) in a first syntax layer (e.g., sequence layer or entry point layer) above frame layer in a bitstream for a video sequence, the bitstream comprising encoded source video having a source type (e.g., progressive or interlace). The decoder processes frame data in a second syntax layer (e.g., frame layer) of the bitstream for a frame (such as an interlaced frame or progressive frame, depending on source type, or a skipped frame) in the video sequence. The first bitstream element indicates whether a repeat-picture element (e.g., a repeat-frame element or a repeat field-element) is present or absent in the frame data in the second syntax layer.
摘要翻译：解码器在用于视频序列的比特流中处理帧层上方的第一语法层（例如，序列层或入口点层）中的第一比特流元素（例如，下拉标志），该比特流包括经编码的源视频，其具有源类型（例如渐进或交错）。解码器在视频序列中的帧（例如隔行帧或逐行帧，取决于源类型或跳过的帧）的第二语法层（例如，帧层）中处理帧数据。第一比特流元素指示第二语法层中的帧数据中是否存在重复图像元素（例如，重复帧元素或重复场元素）。

4. 发明申请

US20070237226A1 Switching distortion metrics during motion estimation 有权
标题翻译：运动估计过程中的切换失真度量
公开(公告)号：US20070237226A1
公开(公告)日：2007-10-11
申请号：US11400049
申请日：2006-04-07
申请人： Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb
发明人： Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb
IPC分类号： H04N7/12 , H04B1/66
CPC分类号： H04N19/567
摘要： Techniques and tools for switching distortion metrics during motion estimation are described. For example, a video encoder determines a distortion metric selection criterion for motion estimation. The criterion can be based on initial results of the motion estimation. To evaluate the criterion, the encoder can compare the criterion to a threshold that depends on a current quantization parameter. The encoder selects between multiple available distortion metrics, which can include a sample-domain distortion metric (e.g., SAD) and a transform-domain distortion metric (e.g., SAHD). The encoder uses the selected distortion metric in the motion estimation. Selectively switching between SAD and SAHD provides rate-distortion performance superior to using only SAD or only SAHD. Moreover, due to the lower complexity of SAD, the computational complexity of motion estimation with SAD-SAHD switching is typically less than motion estimation that always uses SAHD.
摘要翻译：描述了在运动估计期间切换失真度量的技术和工具。例如，视频编码器确定用于运动估计的失真度量选择标准。标准可以基于运动估计的初始结果。为了评估标准，编码器可以将标准与取决于当前量化参数的阈值进行比较。编码器在可以包括采样域失真度量（例如SAD）和变换域失真度量（例如，SAHD）的多个可用失真度量之间进行选择。编码器在运动估计中使用所选择的失真度量。选择性地切换SAD和SAHD之间的速率失真性能优于仅使用SAD或仅SAHD。此外，由于SAD的较低的复杂度，SAD-SAHD切换的运动估计的计算复杂度通常小于始终使用SAHD的运动估计。

5. 发明申请

US20050123274A1 Signaling coding and display options in entry point headers 有权
标题翻译：入口点标题中的信号编码和显示选项
公开(公告)号：US20050123274A1
公开(公告)日：2005-06-09
申请号：US10989845
申请日：2004-11-15
申请人： Regis Crinon , Chih-Lung Lin , Jie Liang , Shankar Regunathan , Shuo-Jen Wu , Timothy Onders , Thomas Holcomb
发明人： Regis Crinon , Chih-Lung Lin , Jie Liang , Shankar Regunathan , Shuo-Jen Wu , Timothy Onders , Thomas Holcomb
IPC分类号： G11C7/00 , H04N5/783 , H04N7/12
CPC分类号： H04N21/23424 , H04N19/44 , H04N19/70 , H04N21/44016 , H04N21/8455
摘要： A decoder receives an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header. The entry point header is in an entry point layer of a bitstream comprising plural layers. The decoder decodes the entry point header. The plural control parameters can include various combinations of control parameters such as a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter, a broken link parameter, a closed entry parameter, one or more coded picture size parameters, one or more range mapping parameters, a hypothetical reference decoder buffer parameter, and/or other parameter(s).
摘要翻译：解码器接收包括与入口点标题相对应的入口点段的多个控制参数的入口点标题。入口点头在包含多个层的比特流的入口点层中。解码器解码入口点标题。多个控制参数可以包括控制参数的各种组合，例如平移扫描开启/关闭参数，参考帧距离开/关参数，循环滤波开/关参数，快速色度运动补偿开/关参数，扩展范围运动矢量开/关参数，可变大小的变换开/关参数，重叠变换开/关参数，量化决定参数和扩展差分运动矢量编码开/关参数，断链接参数，关闭条目参数，一个或多个编码图像大小参数，一个或多个范围映射参数，假设参考解码器缓冲器参数和/或其他参数。

6. 发明申请

US20050053142A1 Hybrid motion vector prediction for interlaced forward-predicted fields 有权
标题翻译：用于交错前向预测场的混合运动矢量预测
公开(公告)号：US20050053142A1
公开(公告)日：2005-03-10
申请号：US10933956
申请日：2004-09-02
申请人： Thomas Holcomb , Pohsiang Hsu , Chih-Lung Lin
发明人： Thomas Holcomb , Pohsiang Hsu , Chih-Lung Lin
IPC分类号： H04N7/32 , H03M7/36 , H04N20060101 , H04N7/01 , H04N7/26 , H04N7/36 , H04N7/50 , H04N7/12
CPC分类号： H04N19/16 , H04N19/137 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools for hybrid motion vector prediction for interlaced forward-predicted fields are described. For example, a video decoder determines an initial motion vector predictor for a motion vector of an interlaced forward-predicted field. The decoder then checks a variation condition based at least in part on a predictor polarity selection (e.g., same or opposite), the initial motion vector predictor, and neighbor motion vectors. If the variation condition is satisfied, the decoder uses one of the neighbor motion vectors as a final motion vector predictor. Otherwise, the decoder uses the initial motion vector predictor as the final motion vector predictor. A video encoder performs corresponding processing.
摘要翻译：描述了用于隔行正向预测场的混合运动矢量预测的技术和工具。例如，视频解码器确定用于隔行扫描前向预测场的运动矢量的初始运动矢量预测器。解码器至少部分地基于预测器极性选择（例如相同或相反），初始运动矢量预测器和相邻运动矢量来检查变化条件。如果满足变化条件，则解码器使用相邻运动矢量之一作为最终运动矢量预测器。否则，解码器使用初始运动矢量预测器作为最终运动矢量预测器。视频编码器执行相应的处理。

7. 发明申请

US20060072669A1 Efficient repeat padding for hybrid video sequence with arbitrary video resolution 有权
标题翻译：用于具有任意视频分辨率的混合视频序列的高效重复填充
公开(公告)号：US20060072669A1
公开(公告)日：2006-04-06
申请号：US10960384
申请日：2004-10-06
申请人： Chih-Lung Lin , Pohsiang Hsu , Sridhar Srinivasan , Thomas Holcomb
发明人： Chih-Lung Lin , Pohsiang Hsu , Sridhar Srinivasan , Thomas Holcomb
IPC分类号： H04N11/04 , H04N7/12 , H04B1/66 , H04N11/02
CPC分类号： H04N19/59 , H04N19/102 , H04N19/119 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/46 , H04N19/563 , H04N19/61 , H04N19/70
摘要： A video codec provides efficient repeat padding of hybrid video sequences having arbitrary video resolution. The video codec repeat pads to expand the active content of pictures in the video sequence out to meet an adaptive vertical macroblock alignment restriction that varies by picture type. For progressive type pictures, the video codec repeats the last row or horizontal boundary edge of the active content. For interlaced type pictures, the video coded repeats the last two rows (last row of each interlaced field) of the active content. This repeat padding differing by picture type provides a better prediction (lower prediction error residual) for macroblocks in following predicted frames whose motion vector points into the padded region.
摘要翻译：视频编解码器提供具有任意视频分辨率的混合视频序列的有效重复填充。视频编解码器重复播放以扩展视频序列中的图像的活动内容，以满足由图像类型变化的自适应垂直宏块对准限制。对于渐进式图像，视频编解码器重复活动内容的最后一行或水平边界边缘。对于隔行扫描型图像，视频编码重复活动内容的最后两行（每个隔行字段的最后一行）。这种不同于图像类型的重复填充对于其运动向量指向填充区域的后续预测帧中的宏块提供了更好的预测（较低的预测误差残差）。

8. 发明申请

US20050053145A1 Macroblock information signaling for interlaced frames 有权
标题翻译：用于隔行扫描帧的宏块信息信令
公开(公告)号：US20050053145A1
公开(公告)日：2005-03-10
申请号：US10934929
申请日：2004-09-02
申请人： Pohsiang Hsu , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
发明人： Pohsiang Hsu , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
IPC分类号： G06K9/36 , H03M7/40 , H03M7/46 , H04N7/12 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/50
CPC分类号： H04N19/93 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86
摘要： A decoder decodes skipped macroblocks of an interlaced frame. Skipped macroblocks use exactly one motion vector and have no motion vector differential information, and lack residual information. The skipped macroblock signal indicates one-motion-vector coding. The skipped macroblock signal can be a compressed bitplane (in a selected bitplane coding mode) sent at frame layer in a bitstream, or an individual bit sent at macroblock layer. In another aspect, an encoder jointly encodes motion compensation type and field/frame coding type for a macroblock in an interlaced P-frame. The encoder also can jointly encode other information for the macroblock (e.g., the presence of a differential motion vector). A decoder decodes a joint code (e.g., a variable length code in a variable length code table) to obtain both motion compensation type and field/frame coding type (and potentially other information) for the macroblock.
摘要翻译：解码器解码交错帧的跳过的宏块。跳过的宏块只使用一个运动矢量，没有运动矢量差分信息，缺少残留信息。跳过的宏块信号表示一运动矢量编码。跳过的宏块信号可以是在比特流中的帧层处发送的压缩位平面（以选定的位平面编码模式）或在宏块层发送的单个比特。另一方面，编码器联合编码交错P帧中的宏块的运动补偿类型和场/帧编码类型。编码器还可以联合编码宏块的其他信息（例如，差分运动矢量的存在）。解码器对联合码（例如，可变长度码表中的可变长度码）解码以获得宏块的运动补偿类型和场/帧编码类型（以及潜在的其他信息）。

9. 发明申请

US20050053143A1 Motion vector block pattern coding and decoding 有权
标题翻译：运动矢量块模式编码和解码
公开(公告)号：US20050053143A1
公开(公告)日：2005-03-10
申请号：US10933958
申请日：2004-09-02
申请人： Thomas Holcomb , Pohsiang Hsu , Sridhar Srinivasan , Chih-Lung Lin
发明人： Thomas Holcomb , Pohsiang Hsu , Sridhar Srinivasan , Chih-Lung Lin
IPC分类号： H04N7/32 , G06K9/36 , H03M7/36 , H03M7/40 , H03M7/46 , H04N20060101 , H04N7/01 , H04N7/12 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/50
CPC分类号： H04N19/16 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86 , H04N19/93
摘要： Techniques and tools for using motion vector block patterns in video encoding and decoding are described. In general, a motion vector block pattern signals the presence or absence of motion vector data for a macroblock with multiple motion vectors. For example, a video decoder decodes variable length codes that represent motion vector block patterns. Each motion vector block pattern has one bit per corresponding luminance motion vector of a macroblock with multiple luminance motion vectors, where the one bit indicates whether or not motion vector data for the corresponding luminance motion vector is signaled. A video encoder performs corresponding encoding.
摘要翻译：描述了在视频编码和解码中使用运动矢量块模式的技术和工具。一般来说，运动矢量块模式用具有多个运动矢量的宏块发送运动矢量数据的存在或不存在。例如，视频解码器解码表示运动矢量块图案的可变长度码。每个运动矢量块图案具有具有多个亮度运动矢量的宏块的每个对应的亮度运动矢量的一位，其中一位指示是否用信号通知相应的亮度运动矢量的运动矢量数据。视频编码器执行相应的编码。

10. 发明申请

US20050084012A1 In-loop deblocking for interlaced video 有权
标题翻译：隔行视频的环路去块
公开(公告)号：US20050084012A1
公开(公告)日：2005-04-21
申请号：US10934116
申请日：2004-09-04
申请人： Pohsiang Hsu , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
发明人： Pohsiang Hsu , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
IPC分类号： G06K9/36 , H03M7/40 , H03M7/46 , H04N7/12 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/50
CPC分类号： H04N19/93 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86
摘要： An encoder/decoder obtains pixel data from one or more field lines associated with a first block in an interlaced frame coded picture comprising plural macroblocks each having an equal number of top and bottom field lines. The encoder/decoder obtains pixel data from one or more field lines associated with a second block and performs in-loop deblocking filtering across a boundary. The in-loop deblocking filtering comprises filter operations performed on pixel data from field lines of same polarity only. In another aspect, an encoder/decoder obtains transform size information for plural blocks of macroblock, obtains field/frame type information for the macroblock and selects one or more boundaries for in-loop deblocking based at least in part on the transform size information and the field/frame type information. In-loop deblocking can be performed on horizontal block boundaries prior to vertical block boundaries.
摘要翻译：编码器/解码器从隔行扫描帧编码图像中的与第一块相关联的一个或多个场线获得像素数据，该帧包括多个具有相等数目的顶场和底场的行的宏块。编码器/解码器从与第二块相关联的一个或多个场线获取像素数据，并且跨越边界执行循环去块滤波。循环去块滤波包括对相同极性的场线的像素数据执行的滤波操作。在另一方面，编码器/解码器获得多个宏块块的变换大小信息，获得宏块的场/帧类型信息，并至少部分基于变换大小信息选择一个或多个边界进行循环去块，字段/帧类型信息。可以在垂直块边界之前的水平块边界上执行环路解块。

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