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1. 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）。

2. 发明申请

US20050053296A1 Bitplane coding for macroblock field/frame coding type information 有权
标题翻译：用于宏块字段/帧编码类型信息的位平面编码
公开(公告)号：US20050053296A1
公开(公告)日：2005-03-10
申请号：US10933959
申请日：2004-09-02
申请人： Sridhar Srinivasan , Chih-Lung Lin , Thomas Holcomb , Kunal Mukerjee , Pohsiang Hsu
发明人： Sridhar Srinivasan , Chih-Lung Lin , Thomas Holcomb , Kunal Mukerjee , Pohsiang Hsu
IPC分类号： G06K9/36 , H04N20060101
CPC分类号： H04N19/16 , H04N19/103 , H04N19/112 , H04N19/176 , H04N19/46 , H04N19/70
摘要： In one aspect, for a first interlaced video frame in a video sequence, a decoder decodes a bitplane signaled at frame layer for the first interlaced video frame. The bitplane represents field/frame transform types for plural macroblocks of the first interlaced video frame. For a second interlaced video frame in the video sequence, for each of at least one but not all of plural macroblocks of the second interlaced video frame, the decoder processes a per macroblock field/frame transform type bit signaled at macroblock layer. An encoder performs corresponding encoding.
摘要翻译：在一个方面，对于视频序列中的第一隔行视频帧，解码器解码用于第一隔行视频帧的在帧层处发信号的位平面。该位平面表示第一隔行视频帧的多个宏块的场/帧变换类型。对于视频序列中的第二隔行视频帧，对于第二隔行视频帧的多个宏块中的至少一个但不是全部的宏块中的每一个，解码器处理在宏块层处发送信号的每宏块字段/帧变换类型位。编码器执行相应的编码。

3. 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。

4. 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。

5. 发明申请

US20050013498A1 Coding of motion vector information 审中-公开
标题翻译：运动矢量信息编码
公开(公告)号：US20050013498A1
公开(公告)日：2005-01-20
申请号：US10622841
申请日：2003-07-18
申请人： Sridhar Srinivasan , Pohsiang Hsu , Thomas Holcomb , Kunal Mukerjee , Bruce Lin
发明人： Sridhar Srinivasan , Pohsiang Hsu , Thomas Holcomb , Kunal Mukerjee , Bruce Lin
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N19/137 , G06K9/36 , G06K9/46 , H04N7/52 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/51 , H04N19/513 , H04N19/61 , H04N19/63 , H04N19/91
摘要： Techniques and tools for encoding and decoding motion vector information for video images are described. For example, a video encoder yields an extended motion vector code by jointly coding, for a set of pixels, a switch code, motion vector information, and a terminal symbol indicating whether subsequent data is encoded for the set of pixels. In another aspect, an encoder/decoder selects motion vector predictors for macroblocks. In another aspect, a video encoder/decoder uses hybrid motion vector prediction. In another aspect, a video encoder/decoder signals a motion vector mode for a predicted image. In another aspect, a video decoder decodes a set of pixels by receiving an extended motion vector code, which reflects joint encoding of motion information together with intra/inter-coding information and a terminal symbol. The decoder determines whether subsequent data exists for the set of pixels based on e.g., the terminal symbol.
摘要翻译：描述用于编码和解码用于视频图像的运动矢量信息的技术和工具。例如，视频编码器通过针对一组像素共同编码一个开关码，运动矢量信息和指示后续数据是否被编码用于像素集合的终端符号来产生扩展运动矢量码。在另一方面，编码器/解码器为宏块选择运动矢量预测器。在另一方面，视频编码器/解码器使用混合运动矢量预测。在另一方面，视频编码器/解码器针对预测图像发送运动矢量模式。在另一方面，视频解码器通过接收扩展运动矢量码来解码一组像素，该扩展运动矢量码反映运动信息的联合编码以及帧内/帧间编码信息和终端符号。解码器基于例如终端符号确定对于像素集合是否存在后续数据。

6. 发明申请

US20050111547A1 Signaling reference frame distances 有权
标题翻译：信号参考帧距离
公开(公告)号：US20050111547A1
公开(公告)日：2005-05-26
申请号：US10990236
申请日：2004-11-15
申请人： Thomas Holcomb , Kunal Mukerjee , Chih-Lung Lin
发明人： Thomas Holcomb , Kunal Mukerjee , Chih-Lung Lin
IPC分类号： H04B1/66
CPC分类号： H04N19/573 , H04N19/112 , H04N19/172 , H04N19/517 , H04N19/70
摘要： Techniques and tools for signaling reference frame distances are described. For example, a video encoder signals a code for a reference frame distance for a current field-coded interlaced video frame. The code indicates a count of frames (e.g., bi-directionally predicted frames) between the current frame and a preceding reference frame. The code may be a variable length code signaled in the frame header for the current frame. The encoder may selectively signal the use of a default value for reference frame distances rather than signal a reference frame distance per frame. A video decoder performs corresponding parsing and decoding.
摘要翻译：描述用于信令参考帧距离的技术和工具。例如，视频编码器针对当前字段编码的隔行视频帧的参考帧距离的码进行信号。代码指示当前帧和先前参考帧之间的帧计数（例如，双向预测帧）。代码可以是在当前帧的帧头中发信号的可变长度代码。编码器可以选择性地通知使用参考帧距离的默认值，而不是每帧参考帧距离的信号。视频解码器执行相应的解析和解码。

7. 发明申请

US20050013497A1 Intraframe and interframe interlace coding and decoding 有权
标题翻译：帧内和帧间交错编码和解码
公开(公告)号：US20050013497A1
公开(公告)日：2005-01-20
申请号：US10622284
申请日：2003-07-18
申请人： Pohsiang Hsu , Bruce Lin , Thomas Holcomb , Kunal Mukerjee , Sridhar Srinivasan
发明人： Pohsiang Hsu , Bruce Lin , Thomas Holcomb , Kunal Mukerjee , Sridhar Srinivasan
IPC分类号： G06K9/36 , G06K9/46 , H04N7/26 , H04N7/46 , H04N7/50
CPC分类号： H04N19/577 , H04N19/102 , H04N19/107 , H04N19/136 , H04N19/16 , H04N19/18 , H04N19/186 , H04N19/46 , H04N19/52 , H04N19/61
摘要： Techniques and tools for encoding and decoding video images (e.g., interlaced frames) are described. For example, a video encoder or decoder processes 4:1:1 format macroblocks comprising four 8×8 luminance blocks and four 4×8 chrominance blocks. In another aspect, fields in field-coded macroblocks are coded independently of one another (e.g., by sending encoded blocks in field order). Other aspects include DC/AC prediction techniques and motion vector prediction techniques for interlaced frames.
摘要翻译：描述了用于编码和解码视频图像（例如，隔行扫描帧）的技术和工具。例如，视频编码器或解码器处理包括四个8×8亮度块和四个4×8色度块的4:1:1格式宏块。在另一方面，字段编码宏块中的字段彼此独立地被编码（例如，通过以现场顺序发送编码的块）。其他方面包括用于交错帧的DC / AC预测技术和运动矢量预测技术。

8. 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。

9. 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。

10. 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。

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