专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US07463684B2 Fading estimation/compensation 有权
标题翻译：衰落估计/补偿
公开(公告)号：US07463684B2
公开(公告)日：2008-12-09
申请号：US10378988
申请日：2003-03-03
申请人： Sridhar Srinivasan , Shankar Regunathan
发明人： Sridhar Srinivasan , Shankar Regunathan
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04B1/66
CPC分类号： H04N19/93 , H04N19/17 , H04N19/186 , H04N19/20 , H04N19/46 , H04N19/51 , H04N19/517 , H04N19/53 , H04N19/61 , H04N19/70 , H04N19/85
摘要： Techniques and tools for performing fading estimation and compensation in video processing applications are described. For example, a video encoder performs fading compensation on one or more reference images to encode images in which fading is detected. A video decoder performs corresponding fading compensation on the one or more reference images.
摘要翻译：描述了在视频处理应用中执行衰落估计和补偿的技术和工具。例如，视频编码器对一个或多个参考图像执行衰落补偿，以对其中检测到衰落的图像进行编码。视频解码器对一个或多个参考图像执行对应的衰落补偿。

42. 发明申请

US20080198936A1 SIGNALING AND USE OF CHROMA SAMPLE POSITIONING INFORMATION 有权
标题翻译：信号定位信息的信号和使用
公开(公告)号：US20080198936A1
公开(公告)日：2008-08-21
申请号：US11772070
申请日：2007-06-29
申请人： Sridhar Srinivasan , Chengjie Tu , Shankar Regunathan , Gary J. Sullivan
发明人： Sridhar Srinivasan , Chengjie Tu , Shankar Regunathan , Gary J. Sullivan
IPC分类号： H04N7/12
CPC分类号： H04N19/186 , H04N19/46 , H04N19/63 , H04N19/70
摘要： Rules for the signaling and interpretation of chroma position are described. One rule, called the short rule, defines fifteen discrete chroma centering positions and corresponding four-bit syntax element. Another rule, called the extended rule, defines 81 discrete chroma centering positions and corresponding seven-bit syntax elements. A described method includes receiving digital media data at a digital media encoder, determining chroma position information for the received digital media data, and representing the chroma position information with one or more syntax elements in an encoded bitstream. The one or more syntax elements are operable to communicate the chroma position information to a digital media decoder. The chroma position information facilitates an image rotation or flip.
摘要翻译：描述色度位置信号和解释规则。称为短规则的一个规则定义了十五个离散色度对中位置和相应的四位语法元素。称为扩展规则的另一个规则定义了81个离散色度对中位置和相应的七位语法元素。所描述的方法包括在数字媒体编码器处接收数字媒体数据，确定接收到的数字媒体数据的色度位置信息，并用编码比特流中的一个或多个语法元素表示色度位置信息。一个或多个语法元素可操作以将色度位置信息传送到数字媒体解码器。色度位置信息有助于图像旋转或翻转。

43. 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。

44. 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。

45. 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。

46. 发明申请

US20050063471A1 Flexible range reduction 有权
标题翻译：弹性范围缩小
公开(公告)号：US20050063471A1
公开(公告)日：2005-03-24
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： H04N7/32 , H03M7/36 , H04N20060101 , H04N7/01 , H04N7/12 , H04N7/26 , H04N7/36 , H04N7/50
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。

47. 发明申请

US20050053155A1 Intensity estimation/compensation for interlaced forward-predicted fields 有权
标题翻译：隔行前向预测场的强度估计/补偿
公开(公告)号：US20050053155A1
公开(公告)日：2005-03-10
申请号：US10933907
申请日：2004-09-02
申请人： Thomas Holcomb , Sridhar Srinivasan , Shankar Regunathan
发明人： Thomas Holcomb , Sridhar Srinivasan , Shankar Regunathan
IPC分类号： H04N7/32 , H03M7/36 , H04N20060101 , H04N7/01 , H04N7/12 , H04N7/26 , H04N7/36 , H04N7/50
CPC分类号： H04N19/16 , H04N19/137 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools for intensity compensation for interlaced forward-predicted fields are described. For example, a video decoder receives and decodes a variable length code that indicates which of two reference fields for an interlaced forward-predicted field use intensity compensation (e.g., both, only the first, or only the second). The decoder performs intensity compensation on each of the two reference fields that uses intensity compensation. A video encoder performs corresponding intensity estimation/compensation and signaling.
摘要翻译：描述了用于交错前向预测场的强度补偿的技术和工具。例如，视频解码器接收并解码可变长度码，该可变长度码指示用于隔行的前向预测场使用强度补偿（例如，两者，仅第一个，或仅第二个）的两个参考场中的哪一个。解码器对使用强度补偿的两个参考场中的每一个进行强度补偿。视频编码器执行相应的强度估计/补偿和信令。

48. 发明申请

US20050052294A1 Multi-layer run level encoding and decoding 有权
标题翻译：多层运行级编解码
公开(公告)号：US20050052294A1
公开(公告)日：2005-03-10
申请号：US10826971
申请日：2004-04-15
申请人： Jie Liang , Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
发明人： Jie Liang , Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
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： Entropy coding and decoding techniques are described, which may be implemented separately or in combination. For example, a video encoder uses two-layer run level coding to reduce bitrate for frequency transform coefficients in a quick and efficient manner, and a video decoder uses corresponding two-layer run level decoding. This two-layer coding/decoding can be generalized to more than two layers of run level coding/decoding. The video encoder and decoder exploit common patterns in run level information to reduce code table size and create opportunities for early termination of decoding. Using zoned Huffman code tables helps limit overall table size while still providing a level of adaptivity in encoding and decoding. Using embedded Huffman code tables allows the encoder and decoder to reuse codes for 8×8, 8×4, 4×8, and 4×4 blocks.
摘要翻译：描述了熵编码和解码技术，其可以单独地或组合地实现。例如，视频编码器使用双层运行级编码以快速且有效的方式降低频率变换系数的比特率，并且视频解码器使用对应的双层运行级解码。这种双层编码/解码可以推广到两层以上的运行级编码/解码。视频编码器和解码器利用运行级信息中的常见模式来减少代码表大小，并为解码提早终止创造机会。使用分区霍夫曼代码表有助于限制整体表格大小，同时在编码和解码中仍然提供一定程度的适应性。使用嵌入式霍夫曼代码表，编码器和解码器可以重用8x8,8x4,4x8和4x4块的代码。

49. 发明申请

US20050041738A1 DC coefficient signaling at small quantization step sizes 有权
标题翻译：小量化步长的直流系数信号
公开(公告)号：US20050041738A1
公开(公告)日：2005-02-24
申请号：US10893168
申请日：2004-07-17
申请人： Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
发明人： Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
IPC分类号： G06K9/36 , G06K9/46 , H04N7/12 , H04N7/26 , H04N7/50
CPC分类号： H04N19/18 , H04N19/124 , H04N19/126 , H04N19/136 , H04N19/137 , H04N19/17 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/44 , H04N19/46 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/91
摘要： Described tools and techniques relate to signaling for DC coefficients at small quantization step sizes. The techniques and tools can be used in combination or independently. For example, a tool such as a video encoder or decoder processes a VLC that indicates a DC differential for a DC coefficient, a FLC that indicates a value refinement for the DC differential, and a third code that indicates the sign for the DC differential. Even with the small quantization step sizes, the tool uses a VLC table with DC differentials for DC coefficients above the small quantization step sizes. The FLCs for DC differentials have lengths that vary depending on quantization step size.
摘要翻译：描述的工具和技术涉及在小量化步长下用于DC系数的信令。技术和工具可以组合使用或独立使用。例如，诸如视频编码器或解码器的工具处理指示DC系数的DC差分的VLC，指示DC差分的值细化的FLC以及指示DC差分的符号的第三代码。即使使用较小的量化步长，该工具也会使用具有DC系数的直流差分的VLC表，其高于小量化步长。用于DC差分的FLC具有随量化步长变化的长度。

50. 发明授权

US09172965B2 Multi-level representation of reordered transform coefficients 有权
公开(公告)号：US09172965B2
公开(公告)日：2015-10-27
申请号：US13458774
申请日：2012-04-27
申请人： Chengjie Tu , Shankar Regunathan , Shijun Sun , Chih-Lung Lin
发明人： Chengjie Tu , Shankar Regunathan , Shijun Sun , Chih-Lung Lin
IPC分类号： H04N7/12 , H04N19/174 , H04N19/61 , H04N19/00 , H04N19/40 , H04N19/176 , H04N19/102 , H04N19/172 , H04N19/46 , H04N19/13 , H04N19/15 , H04N19/129 , H04N19/91 , H04N19/136 , H04N19/152 , H04N19/162 , G06T9/00
CPC分类号： H04N19/174 , G06T9/005 , H04N19/129 , H04N19/13 , H04N19/132 , H04N19/136 , H04N19/15 , H04N19/152 , H04N19/162 , H04N19/172 , H04N19/176 , H04N19/40 , H04N19/44 , H04N19/46 , H04N19/61 , H04N19/91
摘要： Techniques and tools for encoding and decoding a block of frequency coefficients are presented. An encoder selects a scan order from multiple available scan orders and then applies the selected scan order to a two-dimensional matrix of transform coefficients, grouping non-zero values of the frequency coefficients together in a one-dimensional string. The encoder entropy encodes the one-dimensional string of coefficient values according to a multi-level nested set representation. In decoding, a decoder entropy decodes the one-dimensional string of coefficient values from the multi-level nested set representation. The decoder selects the scan order from among multiple available scan orders and then reorders the coefficients back into a two-dimensional matrix using the selected scan order.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式