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1. 发明申请

US20070130493A1 Feedback and Frame Synchronization between Media Encoders and Decoders 有权
标题翻译：媒体编码器和解码器之间的反馈和帧同步
公开(公告)号：US20070130493A1
公开(公告)日：2007-06-07
申请号：US11275071
申请日：2005-12-07
申请人： Warren Barkley , Regis Crinon , Chih-Lung Lin , Tim Moore , Wei Zhong , Minghui Xia
发明人： Warren Barkley , Regis Crinon , Chih-Lung Lin , Tim Moore , Wei Zhong , Minghui Xia
IPC分类号： H04L1/18 , G08C25/02
CPC分类号： H04L1/0014 , H04L1/0026 , H04L1/1835 , H04L1/1887 , H04N19/105 , H04N19/107 , H04N19/164 , H04N19/172 , H04N19/573 , H04N19/61 , H04N19/89 , H04N21/23439 , H04N21/25825 , H04N21/4331 , H04N21/6332 , H04N21/6336 , H04N21/654 , H04N21/6582
摘要： Feedback and frame synchronization between media encoders and decoders is described. More particularly, the encoder can encode frames that are based on source content to be sent to the decoder. The encoder can determine whether the frame should be cached by the encoder and the decoder. If the frame is to be cached, the encoder can so indicate by encoding the frame with one or more cache control bits. The decoder can receive the frame from the decoder, and can examine the cache control bits to determine whether to cache the frame. The decoder can also decode the frame.
摘要翻译：描述介质编码器和解码器之间的反馈和帧同步。更具体地，编码器可以将基于要发送到解码器的源内容的帧编码。编码器可以确定该帧是否应由编码器和解码器缓存。如果帧被缓存，编码器可以通过用一个或多个高速缓存控制位对帧进行编码来指示。解码器可以从解码器接收帧，并且可以检查高速缓存控制位以确定是否缓存帧。解码器也可以对帧进行解码。

2. 发明授权

US09313501B2 Use of frame caching to improve packet loss recovery 有权
公开(公告)号：US09313501B2
公开(公告)日：2016-04-12
申请号：US13614453
申请日：2012-09-13
申请人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shankar Regunathan , Thomas W. Holcomb
发明人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shankar Regunathan , Thomas W. Holcomb
IPC分类号： H04N19/164 , H04N19/89 , H04N19/172 , H04N19/46 , H04N19/61 , H04N19/103 , H04N19/166 , H04N19/573 , H04N19/169
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.

3. 发明授权

US08634413B2 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：US08634413B2
公开(公告)日：2014-01-21
申请号：US11027294
申请日：2004-12-30
申请人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shankar Regunathan , Thomas W. Holcomb
发明人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shankar Regunathan , Thomas W. Holcomb
IPC分类号： H04L12/26
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

US20070237222A1 Adaptive B-picture quantization control 有权
标题翻译：自适应B图像量化控制
公开(公告)号：US20070237222A1
公开(公告)日：2007-10-11
申请号：US11400744
申请日：2006-04-07
申请人： Minghui Xia , Chih-Lung Lin
发明人： Minghui Xia , Chih-Lung Lin
IPC分类号： H04N11/04 , H04N7/12
CPC分类号： H04N19/126 , H04N19/61
摘要： The present application is directed to techniques and tools for adapting the quantizer as well as the quantization step size used during video encoding. For example, a video encoder uses a non-uniform quantizer (having a relatively large dead zone ratio) for B-picture types, but uses a uniform quantizer for other types of pictures. In many encoding scenarios, this helps the encoder control bit rate for the B-picture types instead of resorting to higher quantization step sizes, which improves overall quality for the B-picture types.
摘要翻译：本申请涉及用于调整量化器的技术和工具以及在视频编码期间使用的量化步长。例如，视频编码器对于B图像类型使用非均匀量化器（具有相对较大的死区比率），但对于其他类型的图像使用均匀的量化器。在许多编码情况下，这有助于编码器控制B图像类型的比特率，而不是采用较高的量化步长，从而提高B图像类型的整体质量。

5. 发明授权

US08498335B2 Adaptive deadzone size adjustment in quantization 有权
标题翻译：量化中的适应性死区大小调整
公开(公告)号：US08498335B2
公开(公告)日：2013-07-30
申请号：US11728895
申请日：2007-03-26
申请人： Thomas W. Holcomb , Minghui Xia , Chih-Lung Lin , Cheng Chang
发明人： Thomas W. Holcomb , Minghui Xia , Chih-Lung Lin , Cheng Chang
IPC分类号： H04N11/02 , H04N7/24
CPC分类号： H04N19/18 , H04N19/124 , H04N19/14 , H04N19/176
摘要： Techniques and tools are described for adaptive deadzone (“DZ”) resizing during quantization. For example, in some embodiments, for quantization of an AC frequency coefficient of a block, a video encoder adjusts DZ size of a selected quantizer depending on the texture of the block. In other embodiments, a video encoder adjusts DZ size depending on the frequency of a coefficient being quantized. In still other embodiments, for quantization of an AC frequency coefficient of a block, a video encoder adjusts DZ size depending on the texture of the block and the frequency of the coefficient being quantized.
摘要翻译：描述了在量化期间适应性死区（“DZ”）调整大小的技术和工具。例如，在一些实施例中，对于块的AC频率系数的量化，视频编码器根据块的纹理来调整所选量化器的DZ大小。在其他实施例中，视频编码器根据被量化的系数的频率来调整DZ大小。在其他实施例中，对于块的AC频率系数的量化，视频编码器根据块的纹理和被量化的系数的频率来调整DZ大小。

6. 发明申请

US20110280303A1 FLEXIBLE RANGE REDUCTION 有权
标题翻译：灵活范围减少
公开(公告)号：US20110280303A1
公开(公告)日：2011-11-17
申请号：US13191335
申请日：2011-07-26
申请人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
发明人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
IPC分类号： H04N7/28 , H04N11/02
CPC分类号： H04N19/00145 , H04N19/137 , H04N19/16 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
摘要翻译：描述了技术和工具，用于灵活地缩减视频样本。例如，编码器用信号通知一个或多个语法元素的第一组，用于亮度样本的范围减小，并且为第二组一个或多个语法元素用于色度样本的范围缩小。编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。或者，编码器对入口点段的入口点标题中的范围缩小语法元素进行信号，其中语法元素适用于入口点段中的图像。如果图像使用范围缩小，则编码器缩小图像的样本。否则，编码器跳过缩小比例。解码器执行相应的解析和放大操作。

7. 发明授权

US08014450B2 Flexible range reduction 有权
标题翻译：弹性范围缩小
公开(公告)号：US08014450B2
公开(公告)日：2011-09-06
申请号：US10989702
申请日：2004-11-15
申请人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
发明人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
IPC分类号： H04N7/12
CPC分类号： H04N19/00145 , H04N19/137 , H04N19/16 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
摘要翻译：描述了技术和工具，用于灵活地缩减视频样本。例如，编码器用信号通知一个或多个语法元素的第一组，用于亮度样本的范围减小，并且为第二组一个或多个语法元素用于色度样本的范围缩小。编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。或者，编码器对入口点段的入口点标题中的范围缩小语法元素进行信号，其中语法元素适用于入口点段中的图像。如果图像使用范围缩小，则编码器缩小图像的样本。否则，编码器跳过缩小比例。解码器执行相应的解析和放大操作。

8. 发明申请

US20070237238A1 Making interlace frame level coding mode decisions 有权
标题翻译：进行交错帧级编码模式决策
公开(公告)号：US20070237238A1
公开(公告)日：2007-10-11
申请号：US11400751
申请日：2006-04-07
申请人： Minghui Xia , Chih-Lung Lin
发明人： Minghui Xia , Chih-Lung Lin
IPC分类号： H04N11/04 , H04N7/12
CPC分类号： H04N19/137 , H04N19/112 , H04N19/61
摘要： For each of plural blocks (e.g., 8×16 blocks) in a source interlaced video frame, a video encoder measures vertical intensity level fluctuation between neighboring lines and between alternating lines in the block, and determines an interlace effect status value for the block. For example, the encoder calculates a ratio between the fluctuations of neighboring and alternating lines and compares the ratio with one or more thresholds. The encoder also can measure horizontal intensity level fluctuation and compare it with vertical intensity fluctuation. The encoder determines a frame-level interlace coding mode (e.g., frame mode or field mode) for the frame based at least in part on the interlace effect status values. The encoder can represent a frame-level interlace coding mode decision with a bitstream element, and a decoder can perform one or more video decoding functions based at least in part on the value of the bitstream element.
摘要翻译：对于源隔行视频帧中的多个块（例如，8×16块）中的每一个，视频编码器测量相邻行之间和块中的交替行之间的垂直强度级别波动，并且确定块的隔行效果状态值。例如，编码器计算相邻线和交替线的波动之间的比率，并将该比率与一个或多个阈值进行比较。编码器还可以测量水平强度水平波动，并将其与垂直强度波动进行比较。编码器至少部分地基于隔行扫描效果状态值来确定帧的帧级交错编码模式（例如，帧模式或场模式）。编码器可以用比特流元素表示帧级隔行编码模式决定，并且解码器可以至少部分地基于比特流元素的值来执行一个或多个视频解码功能。

9. 发明授权

US08422546B2 Adaptive video encoding using a perceptual model 有权
标题翻译：使用感知模型的自适应视频编码
公开(公告)号：US08422546B2
公开(公告)日：2013-04-16
申请号：US11137924
申请日：2005-05-25
申请人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shou-Jen Wu
发明人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shou-Jen Wu
IPC分类号： H04B1/66
CPC分类号： H04N19/18 , H04N19/117 , H04N19/126 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/61
摘要： A video encoder includes a region detector module that classifies blocks of video frames. An adaptive filter module applies a median filter to a block based upon a block classification assigned by the region detector module. An adaptive quantization module quantizes a block according to a quantization method adaptively determined based upon a block classification assigned by the region detection module. In one example, a video encoder adaptively determines a median filter selected using a block classification. In another example, a video encoder adaptively determines whether to drop an isolated last transform coefficient based on the block classification, and/or applies a dead-zone selected using the block classification.
摘要翻译：视频编码器包括对视频帧块进行分类的区域检测器模块。自适应滤波器模块基于由区域检测器模块分配的块分类将中值滤波器应用于块。自适应量化模块根据由区域检测模块分配的块分类自适应地确定的量化方法量化块。在一个示例中，视频编码器自适应地确定使用块分类选择的中值滤波器。在另一示例中，视频编码器基于块分类自适应地确定是否丢弃隔离的最后变换系数，和/或应用使用块分类选择的死区。

10. 发明授权

US07974340B2 Adaptive B-picture quantization control 有权
标题翻译：自适应B图像量化控制
公开(公告)号：US07974340B2
公开(公告)日：2011-07-05
申请号：US11400744
申请日：2006-04-07
申请人： Minghui Xia , Chih-Lung Lin
发明人： Minghui Xia , Chih-Lung Lin
IPC分类号： H04N11/04
CPC分类号： H04N19/126 , H04N19/61
摘要： The present application is directed to techniques and tools for adapting the quantizer as well as the quantization step size used during video encoding. For example, a video encoder uses a non-uniform quantizer (having a relatively large dead zone ratio) for B-picture types, but uses a uniform quantizer for other types of pictures. In many encoding scenarios, this helps the encoder control bit rate for the B-picture types instead of resorting to higher quantization step sizes, which improves overall quality for the B-picture types.
摘要翻译：本申请涉及用于调整量化器的技术和工具以及在视频编码期间使用的量化步长。例如，视频编码器对于B图像类型使用非均匀量化器（具有相对较大的死区比率），但对于其他类型的图像使用均匀的量化器。在许多编码情况下，这有助于编码器控制B图像类型的比特率，而不是采用较高的量化步长，从而提高B图像类型的整体质量。

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