专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US06501397B1 Bit-plane dependent signal compression 失效
标题翻译：位平面相关信号压缩
公开(公告)号：US06501397B1
公开(公告)日：2002-12-31
申请号：US09578286
申请日：2000-05-25
申请人： Hayder Radha , Yingwei Chen , Mihaela Van Der Schaar-Mitrea
发明人： Hayder Radha , Yingwei Chen , Mihaela Van Der Schaar-Mitrea
IPC分类号： H03M700
CPC分类号： H04N19/34 , H04N19/12 , H04N19/147 , H04N19/184 , H04N19/436 , H04N19/46
摘要： The present invention is directed to a variable coding of the bit-planes for a particular source signal. This includes first partitioning or grouping the different bit-planes into embedded sub-signals and then coding each sub-signal. This technique enables an encoder according to the present invention to control and achieve a desired trade-off point between scalability and coding-efficiency. Therefore, in cases where bit or bit-plane level granularity is not required, coding efficiency can be improved by combining two or more bit-planes prior to coding. In addition, since the statistical nature of each bit-plane is different, the level of grouping used across the bit-planes can vary.
摘要翻译：本发明涉及用于特定源信号的位平面的可变编码。这包括首先将不同的位平面划分或分组成嵌入的子信号，然后对每个子信号进行编码。这种技术使得根据本发明的编码器能够在可扩展性和编码效率之间控制和实现期望的权衡点。因此，在不需要位或位平面级粒度的情况下，可以通过在编码之前组合两个或多个位平面来提高编码效率。另外，由于每个位平面的统计特性不同，所以在平面上使用的分组水平可以变化。

22. 发明授权

US06480547B1 System and method for encoding and decoding the residual signal for fine granular scalable video 有权
标题翻译：用于对细粒度可缩放视频进行编码和解码残留信号的系统和方法
公开(公告)号：US06480547B1
公开(公告)日：2002-11-12
申请号：US09419672
申请日：1999-10-15
申请人： Yingwei Chen , Mihaela Van Der Schaar , Hayder Radha
发明人： Yingwei Chen , Mihaela Van Der Schaar , Hayder Radha
IPC分类号： H04N712
CPC分类号： H04N19/34 , H04N19/13 , H04N19/29 , H04N19/61 , H04N19/63
摘要： There is disclosed a video encoder and a video decoder. The video encoder comprises base layer circuitry for receiving an input stream of video frames and generating compressed base layer video data for transmission to a streaming video receiver. The base layer video data comprises original transform coefficients (O) associated with the input stream of video frames and reconstructed base layer transform coefficients (B) associated with the original transform coefficients. The video encoder also comprises enhancement layer circuitry for receiving the original transform coefficients (O) and the reconstructed base layer transform coefficients (B) and generating a residual signal (R) proportional to a difference between the original transform coefficients (O) and the reconstructed base layer transform coefficients (B). The enhancement layer circuitry encodes and sends to the streaming video receiver a sign of the residual signal (R) and the bit planes of the residual signal (R). The video decoder comprises base layer circuitry for receiving compressed base layer video data and determining reconstructed base layer transform coefficients (B) associated with a quantization of the base layer video data. The video decoder further comprises enhancement layer circuitry for receiving enhancement layer video data associated with the compressed base layer video data and determining a residual signal (R) and a sign associated with the residual signal (R). The enhancement layer circuitry reconstructs enhancement layer transform coefficients (E) from the residual signal (R) and the plurality of reconstructed base layer transform coefficients (B).
摘要翻译：公开了一种视频编码器和视频解码器。视频编码器包括用于接收视频帧的输入流并生成用于传输到流式视频接收机的压缩基本层视频数据的基本层电路。基层视频数据包括与视频帧的输入流相关联的原始变换系数（O）和与原始变换系数相关联的重建的基本层变换系数（B）。视频编码器还包括用于接收原始变换系数（O）和重构的基本层变换系数（B）的增强层电路，并产生与原始变换系数（O）和重建的变换系数（O）之间的差成比例的残差信号基层变换系数（B）。增强层电路对流视频接收机编码残留信号（R）的符号和残留信号（R）的位平面。视频解码器包括用于接收压缩的基本层视频数据和确定与基本层视频数据的量化相关联的重建的基本层变换系数（B）的基本层电路。视频解码器还包括增强层电路，用于接收与压缩的基本层视频数据相关联的增强层视频数据，并确定残余信号（R）和与残留信号（R）相关联的符号。增强层电路从剩余信号（R）和多个重建的基本层变换系数（B）重建增强层变换系数（E）。

23. 发明授权

US06292512B1 Scalable video coding system 失效
标题翻译：可扩展视频编码系统
公开(公告)号：US06292512B1
公开(公告)日：2001-09-18
申请号：US09110616
申请日：1998-07-06
申请人： Hayder Radha , Yingwei Chen , Robert A. Cohen
发明人： Hayder Radha , Yingwei Chen , Robert A. Cohen
IPC分类号： H04N0718
CPC分类号： H04N21/658 , H04N19/34 , H04N21/6377
摘要： A system for coding video data comprised of one or more frames codes a portion of the video data using a frame-prediction coding technique, and generates residual images based on the video data and the coded video data. The system then codes the residual images using a fine-granular scalability coding technique, and outputs the coded video data and at least one of the coded residual images to a receiver.
摘要翻译：一种用于对由一个或多个帧组成的视频数据进行编码的系统使用帧预测编码技术对视频数据的一部分进行编码，并且基于视频数据和编码的视频数据生成残差图像。然后，该系统使用细粒度可伸缩性编码技术对残留图像进行编码，并将编码的视频数据和至少一个编码残差图像输出到接收机。

24. 发明申请

US20090080514A1 SENDER SIDE CHANNEL ADAPTIVE VIDEO TRANSMISSION 审中-公开
公开(公告)号：US20090080514A1
公开(公告)日：2009-03-26
申请号：US11719265
申请日：2005-11-14
申请人： Yingwei Chen
发明人： Yingwei Chen
IPC分类号： H04N7/12
CPC分类号： H04N21/23406 , H04N19/132 , H04N19/152 , H04N19/164 , H04N19/176 , H04N19/18 , H04N19/188 , H04N19/46 , H04N19/48 , H04N19/59 , H04N21/234327 , H04N21/2402 , H04N21/2662 , H04N21/44004 , H04N21/8455
摘要： A channel adaptive video transmission system and method. A system (10) is provided that includes: a variable length decoding system (VLD) (14) for generating header codes and discrete cosine transform (DCT) run length codes from the compressed video signal; a DCT codes marking system (16) for inserting markers into the DCT run length codes to define marked DCT coefficient segments; and a bit stream processing system (18) that determines whether to keep marked DCT coefficient segments based on current channel conditions.
摘要翻译：一种信道自适应视频传输系统及方法。提供一种系统（10），其包括：用于从压缩视频信号产生报头代码和离散余弦变换（DCT）游程长度代码的可变长度解码系统（VLD）（14）; 用于将标记插入到DCT游程长度代码中以定义标记的DCT系数段的DCT代码标记系统（16）; 以及基于当前信道条件确定是否保持标记的DCT系数段的比特流处理系统（18）。

25. 发明申请

US20070223888A1 Digital Television Transmission With Error Correction 失效
标题翻译：数字电视传输与纠错
公开(公告)号：US20070223888A1
公开(公告)日：2007-09-27
申请号：US10574608
申请日：2004-09-30
申请人： Yingwei Chen , Dagnachew Birru , James Wendorf
发明人： Yingwei Chen , Dagnachew Birru , James Wendorf
IPC分类号： H04N7/64
CPC分类号： H03M13/356 , H03M13/29 , H04N19/67 , H04N19/89
摘要： In a transmitter, a standard stream of encoded multi-media data and uniform error correction data is transmitted through a first channel. The uniform error correction data provides substantially the same error correction for all portions of the encoded multimedia data. Simultaneously, additional unequal error correction data is generated for critical portions of the standard stream and not for other portions of the standard stream, and the additional error correct data is transmitted through a second channel. In a receiver, the additional error correct data is used to error correct just the critical portions of the standard stream, and then the uniform error correction data is used to error correct all the portions of the encoded multimedia data of the standard stream.
摘要翻译：在发射机中，编码的多媒体数据的标准流和均匀纠错数据通过第一信道传输。均匀纠错数据为编码的多媒体数据的所有部分提供基本相同的纠错。同时，为标准流的关键部分而不是标准流的其他部分生成附加的不相等的纠错数据，并且通过第二通道发送附加的错误正确数据。在接收机中，使用附加的错误校正数据来错误地校正标准流的关键部分，然后使用均匀纠错数据来错误校正标准流的编码多媒体数据的所有部分。

26. 发明授权

US07020672B2 Reduced complexity IDCT decoding with graceful degradation 失效
公开(公告)号：US07020672B2
公开(公告)日：2006-03-28
申请号：US09823363
申请日：2001-03-30
申请人： Tse-Hua Lan , Zhun Zhong , Yingwei Chen
发明人： Tse-Hua Lan , Zhun Zhong , Yingwei Chen
IPC分类号： G06F17/14
CPC分类号： H04N19/625 , H04N19/122 , H04N19/126 , H04N19/132 , H04N19/137 , H04N19/156 , H04N19/176 , H04N19/18 , H04N19/44 , H04N19/59 , H04N19/61 , H04N19/90
摘要： Data compressed according to a lossy DCT-based algorithm, such as the MPEG or MPEG2 algorithms, is decompressed according to a dynamically-selected set of DCT coefficients, with unused coefficients masked out. A macroblock of the data exhibiting little motion is decompressed with a small subset of DCT coefficients, while a macroblock exhibiting more motion is decompressed using a larger subset of DCT coefficients up the full set of DCT coefficients. Average computational complexity is thus kept low, enabling the use of inexpensive equipment, while degradation is minimized.

27. 发明授权

US07016414B2 Method and system for skipping decoding of overlaid areas of video 失效
公开(公告)号：US07016414B2
公开(公告)日：2006-03-21
申请号：US10082859
申请日：2001-10-19
申请人： Yingwei Chen , Shaomin Peng , Tse-Hua Lan , Zhun Zhong
发明人： Yingwei Chen , Shaomin Peng , Tse-Hua Lan , Zhun Zhong
IPC分类号： H04N7/18
CPC分类号： H04N19/577 , H04N19/132 , H04N19/139 , H04N19/157 , H04N19/159 , H04N19/17 , H04N19/172 , H04N19/23 , H04N19/46 , H04N19/587
摘要： A system and method that reduces computational complexity of a decoder by identifying a skippable region in an overlaid area. The invention provides a system for processing encoded video data, comprising: an analysis system that determines if a current video frame having an overlaid area acts as a reference for future video frames; and a system for identifying a skippable region in the overlaid area. The invention may also include a system for identifying a portion of the overlaid area as the skippable based on analysis of motion vectors or motion vector ranges.

28. 发明授权

US06985635B2 System and method for providing a single-layer video encoded bitstreams suitable for reduced-complexity decoding 有权
标题翻译：用于提供适合于复杂度降低的解码的单层视频编码比特流的系统和方法
公开(公告)号：US06985635B2
公开(公告)日：2006-01-10
申请号：US10127528
申请日：2002-04-22
申请人： Yingwei Chen , Zhun Zhong
发明人： Yingwei Chen , Zhun Zhong
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N19/18 , H04N19/126 , H04N19/132 , H04N19/156 , H04N19/61
摘要： A method and system of reducing the computation load of an MPEG decoder by changing the encoding algorithms in a video-processing system are provided. During an encoding mode, a stream of data blocks is received and at least one motion vector and one motion compensation prediction value for each macro-block are generated. The prediction value is transformed into a set of DCT coefficients. Prior to the quantizing step, the set of DCT coefficients are modified according to predetermined criteria. To this end, the total energy level of the DCT coefficients excluding the lowest 2×2 DCT coefficients is computed, and last column and last row of the DCT coefficients is discarded alternatively until the total energy level of the DCT coefficients reaches a predetermined energy level. Therafter, the discarded column or row is assigned to a predetermined value. The modified DCT coefficients are then quantized and encoded, thereby generating a bit stream of encoded macro-blocks, which are subsequently decoded according to a conventional decoding process.
摘要翻译：提供了通过改变视频处理系统中的编码算法来减少MPEG解码器的计算负荷的方法和系统。在编码模式期间，接收数据块流，并生成每个宏块的至少一个运动矢量和一个运动补偿预测值。将该预测值变换为一组DCT系数。在量化步骤之前，根据预定标准修改DCT系数集合。为此，计算除最低2×2 DCT系数之外的DCT系数的总能级，并且DCT系数的最后一行和最后一行被替换地丢弃，直到DCT系数的总能级达到预定的能级。 Therafter将丢弃的列或行分配给预定值。然后对经修改的DCT系数进行量化和编码，从而生成经编码的宏块的比特流，其随后根据常规解码过程进行解码。

29. 发明授权

US06917713B2 System and method for enhancing videos from drift-free scalable bitstream 失效
公开(公告)号：US06917713B2
公开(公告)日：2005-07-12
申请号：US10157666
申请日：2002-05-29
申请人： Jong Chul Ye , Yingwei Chen
发明人： Jong Chul Ye , Yingwei Chen
IPC分类号： G06T9/00 , H03M7/30 , H04N19/895 , G06K9/46
CPC分类号： H04N19/34 , H04N19/126 , H04N19/61 , H04N19/895
摘要： A scalable decoder system having a decoder reconstruction system, wherein the decoder reconstruction system comprises: an estimation algorithm x ~ i , n e = a i , n + E Z ⁢ { d i , n ⁡ ( ρ ; x ~ i , n - 1 e + Z ) } for estimating a lost discrete cosine transform (DCT) coefficient, which incorporates the quantization noise of previous enhancement layer data into the expectation, wherein the estimation algorithm includes a density distribution dependent on at least one unknown parameter {circumflex over (α)}l; and a parameter estimation algorithm for estimating {circumflex over (α)}l according to the equation: α ^ l = - log ⁡ ( 1 - P ^ l ) b l , wherein bl denotes each of a set of quantizer decision levels l, and {circumflex over (P)}l is the sum of a set of a normalized frequency of occurrences of data quantized to each quantizer decision level 1,2, . . . , l.

30. 发明授权

US06639943B1 Hybrid temporal-SNR fine granular scalability video coding 有权
标题翻译：混合时间SNR精细粒度可扩展性视频编码
公开(公告)号：US06639943B1
公开(公告)日：2003-10-28
申请号：US09590825
申请日：2000-06-09
申请人： Hayder Radha , Yingwei Chen , Mihaela Van Der Schaar
发明人： Hayder Radha , Yingwei Chen , Mihaela Van Der Schaar
IPC分类号： H04N712
CPC分类号： H04N21/654 , H04N19/115 , H04N19/164 , H04N19/172 , H04N19/187 , H04N19/31 , H04N19/34 , H04N19/577 , H04N19/61 , H04N21/6332
摘要： The present invention is directed to fine granular coding technique that includes both quality and temporal scalability. This is accomplished by utilizing a hybrid temporal/SNR scalability structure that is readily adaptable to fine granular coding techniques. In one example of this structure, temporal enhancement frames and FGS enhancement frames are included in a single enhancement layer. In another example, two distinct enhancement layers are used to achieve the hybrid temporal-SNR scalability. The two layers include a temporal scalability layer to achieve the temporal enhancement for the base-layer (i.e., better motion), while an FGS layer is used to improve the quality SNR of the base-layer and/or the temporal-scalability enhancement layer.
摘要翻译：本发明涉及包括质量和时间可伸缩性的精细粒度编码技术。这通过利用易于适应细粒度编码技术的混合时间/ SNR可伸缩性结构来实现。在该结构的一个示例中，时间增强帧和FGS增强帧被包括在单个增强层中。在另一示例中，使用两个不同的增强层来实现混合时间SNR可伸缩性。两层包括实现基层的时间增强（即更好的运动）的时间可伸缩性层，而FGS层用于提高基层和/或时间可扩展性增强层的质量SNR 。

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