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1. 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。

2. 发明申请

US20050105883A1 Signaling valid entry points in a video stream 有权
标题翻译：在视频流中传送有效的入口点
公开(公告)号：US20050105883A1
公开(公告)日：2005-05-19
申请号：US10882739
申请日：2004-06-30
申请人： Thomas Holcomb , Regis Crinon , Timothy Onders , Sridhar Srinivasan , Shankar Regunathan
发明人： Thomas Holcomb , Regis Crinon , Timothy Onders , Sridhar Srinivasan , Shankar Regunathan
IPC分类号： H04N5/91 , H04N7/173 , H04N7/26 , H04N19/00 , H04N21/438 , H04N21/83 , H04N5/783
CPC分类号： H04N21/8455 , H04N21/23424 , H04N21/44016
摘要： Techniques and tools for coding/decoding of digital video, and in particular, for determining, signaling and detecting entry points in video streams are described. Techniques and tools described herein are used to embed entry point indicator information in the bitstream that receivers, editing systems, insertion systems, and other systems can use to detect valid entry points in compressed video.
摘要翻译：描述了用于数字视频的编码/解码的技术和工具，特别是用于确定，信令和检测视频流中的入口点的技术和工具。这里描述的技术和工具用于将入口点指示符信息嵌入比特流中，接收器，编辑系统，插入系统和其他系统可以用来检测压缩视频中的有效入口点。

3. 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。

4. 发明申请

US20050152448A1 Signaling for entry point frames with predicted first field 有权
标题翻译：对具有预测的第一场的入口点信号进行信令
公开(公告)号：US20050152448A1
公开(公告)日：2005-07-14
申请号：US10989843
申请日：2004-11-15
申请人： Regis Crinon , Thomas Holcomb , Shankar Regunathan , Sridhar Srinivasan
发明人： Regis Crinon , Thomas Holcomb , Shankar Regunathan , Sridhar Srinivasan
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 video decoder receives an entry point key frame comprising first and second interlaced video fields and decodes a first syntax element comprising information (e.g., frame coding mode) for the entry point key frame at a first syntax level (e.g., frame level) in a bitstream. The first interlaced video field is a predicted field, and the second interlaced video field is an intra-coded field. The information for the entry point key frame can be a frame coding mode (e.g., field interlace) for the entry point key frame. The decoder can decode a second syntax element at the first syntax level comprising second information (e.g., field type for each of the first and second interlaced video fields) for the entry point key frame.
摘要翻译：视频解码器接收包括第一和第二隔行视频字段的入口点关键帧，并且解码第一语法元素，该第一语法元素包括第一语法元素，其包括用于入口点关键帧的信息（例如，帧编码模式）比特流。第一隔行视频字段是预测字段，第二隔行视频字段是帧内编码字段。入口点关键帧的信息可以是用于入口点关键帧的帧编码模式（例如，场交错）。解码器可以解码第一语法级别的第二语法元素，其包括用于入口点关键帧的第二信息（例如，用于第一和第二隔行扫描视频字段中的每一个的场类型）。

5. 发明申请

US20050099869A1 Field start code for entry point frames with predicted first field 有权
标题翻译：具有预测第一个字段的入口点帧的现场起始码
公开(公告)号：US20050099869A1
公开(公告)日：2005-05-12
申请号：US10989596
申请日：2004-11-15
申请人： Regis Crinon , Thomas Holcomb , Shankar Regunathan , Sridhar Srinivasan
发明人： Regis Crinon , Thomas Holcomb , Shankar Regunathan , Sridhar Srinivasan
IPC分类号： G11C7/00 , H04N5/783 , H04N7/12
CPC分类号： H04N19/44 , H04N19/70
摘要： A decoder receives a field start code for an entry point key frame. The field start code indicates a second coded interlaced video field in the entry point key frame following a first coded interlaced video field in the entry point key frame and indicates a point to begin decoding of the second coded interlaced video field. The first coded interlaced video field is a predicted field, and the second coded interlaced video field is an intra-coded field. The decoder decodes the second field without decoding the first field. The field start code can be followed by a field header. The decoder can receive a frame header for the entry point key frame. The frame header may comprise a syntax element indicating a frame coding mode for the entry point key frame and/or a syntax element indicating field types for the first and second coded interlaced video fields.
摘要翻译：解码器接收入口点关键帧的场起始码。场起始码指示入口点关键帧中的第一编码隔行扫描视频字段之后的入口点关键帧中的第二编码隔行扫描视频字段，并且指示开始对第二编码交错视频字段进行解码的点。第一编码隔行视频字段是预测字段，第二编码隔行视频字段是帧内编码字段。解码器解码第二场而不解码第一场。字段起始码可以后跟一个字段标题。解码器可以接收入口点关键帧的帧头。帧头可以包括指示用于入口点关键帧的帧编码模式的语法元素和/或指示第一和第二编码隔行视频字段的字段类型的语法元素。

6. 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。

7. 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。

8. 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）。

9. 发明申请

US20050078754A1 Scan patterns for interlaced video content 有权
标题翻译：用于隔行视频内容的扫描模式
公开(公告)号：US20050078754A1
公开(公告)日：2005-04-14
申请号：US10989844
申请日：2004-11-15
申请人： Jie Liang , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
发明人： Jie Liang , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
IPC分类号： H03M7/40 , H03M7/46 , H04N7/12 , H04N7/26 , H04N7/50
CPC分类号： H04N19/00 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , 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 , H04N19/91 , H04N19/93
摘要： Tools and techniques for applying scan patterns during encoding and decoding of interlaced video are described. For example, a video decoder scans transform coefficients from a one-dimensional array to a two-dimensional block according to a scan pattern. The block is 4×4, and the scan pattern biases the vertical direction by starting with the DC coefficient and three AC coefficients of the lowest horizontal frequency. Or, the block is 8×4, and the scan pattern biases the vertical direction by starting with the DC coefficient and three AC coefficients of the lowest horizontal frequency. Or, the block is 4×8, and the scan pattern biases the horizontal direction for the lowest frequency AC coefficients in the horizontal and vertical directions but biases the vertical direction for at least some other AC coefficients. A corresponding video encoder applies the scan patterns to scan transform coefficients from two-dimensional blocks to one-dimensional arrays.
摘要翻译：描述了在隔行视频的编码和解码期间应用扫描模式的工具和技术。例如，视频解码器根据扫描模式将从一维阵列的变换系数扫描到二维块。该块为4×4，扫描图案通过以DC系数和最低水平频率的三个AC系数开始偏置垂直方向。或者，该块是8×4，并且扫描模式通过从DC系数和最低水平频率的三个AC系数开始偏置垂直方向。或者，该块为4×8，并且扫描图案在水平和垂直方向上偏置最低频率AC系数的水平方向，但是对于至少一些其它AC系数偏置垂直方向。相应的视频编码器将扫描图案应用于从二维块扫描到一维阵列的变换系数。

10. 发明申请

US20050068208A1 Scan patterns for progressive video content 有权
标题翻译：逐行视频内容的扫描模式
公开(公告)号：US20050068208A1
公开(公告)日：2005-03-31
申请号：US10989594
申请日：2004-11-15
申请人： Jie Liang , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
发明人： Jie Liang , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
IPC分类号： H03M7/40 , H03M7/46 , H04N7/12 , H04N7/26 , H04N7/50
CPC分类号： H04N19/93 , H04N19/129 , H04N19/13 , H04N19/159 , H04N19/16 , H04N19/176 , H04N19/196 , H04N19/463 , H04N19/61 , H04N19/70
摘要： Tools and techniques for applying scan patterns during encoding and decoding of progressive video are described. For example, a video decoder entropy decodes transform coefficients in a one-dimensional array and scans the transform coefficients into a block according to a scan pattern. The block is 8×4, and the scan pattern biases the vertical direction for at least the lowest frequency AC coefficients in the horizontal and vertical directions. Or, the block is 4×8, and the scan pattern biases the horizontal direction for at least the lowest frequency AC coefficients in the horizontal and vertical directions. A corresponding video encoder applies the scan patterns to scan transform coefficients from blocks to one-dimensional arrays.
摘要翻译：描述了在逐行视频的编码和解码期间应用扫描模式的工具和技术。例如，视频解码器熵解码一维阵列中的变换系数，并根据扫描模式将变换系数扫描成块。该块为8×4，并且扫描图案偏置垂直方向至少在水平和垂直方向上的最低频率AC系数。或者，块是4×8，并且扫描图案在水平和垂直方向上至少对最低频率AC系数偏置水平方向。相应的视频编码器应用扫描图案来扫描从块到一维阵列的变换系数。

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