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1. 发明授权

US06057884A Temporal and spatial scaleable coding for video object planes 失效
标题翻译：视频对象平面的时间和空间可缩放编码
公开(公告)号：US06057884A
公开(公告)日：2000-05-02
申请号：US869493
申请日：1997-06-05
申请人： Xuemin Chen , Ajay Luthra , Ganesh Rajan , Mandayam Narasimhan
发明人： Xuemin Chen , Ajay Luthra , Ganesh Rajan , Mandayam Narasimhan
IPC分类号： G06T9/00 , H03M7/36 , H04N7/26 , H04N7/32 , H04N7/46 , H04N7/52 , H04N13/00 , H04N19/00 , H04N19/50
CPC分类号： G06T3/40 , H04N13/0048 , H04N13/0059 , H04N19/29 , H04N19/577 , H04N19/597 , H04N7/52 , H04N13/0003 , H04N13/0037 , H04N13/0051 , H04N13/0055 , H04N13/0285 , H04N19/30 , H04N19/31 , H04N19/33 , H04N2013/0085 , H04N2013/0092
摘要： Temporal and spatial scaling of video images including video object planes (VOPs) in an input digital video sequence is provided. Coding efficiency is improved by adaptively compressing scaled field mode video. Upsampled VOPs in the enhancement layer are reordered to provide a greater correlation with the input video sequence based on a linear criteria. The resulting residue is coded using a spatial transformation such as the DCT. A motion compensation scheme is used for coding enhancement layer VOPs by scaling motion vectors which have already been determined for the base layer VOPs. A reduced search area whose center is defined by the scaled motion vectors is provided. The motion compensation scheme is suitable for use with scaled frame mode or field mode video. Various processor configurations achieve particular scaleable coding results. Applications of scaleable coding include stereoscopic video, picture-in-picture, preview access channels, and ATM communications.
摘要翻译：提供了包括输入数字视频序列中的视频对象平面（VOP）的视频图像的时间和空间缩放。通过自适应压缩缩放的视野模式视频来提高编码效率。增强层中的上采样VOP被重新排序以基于线性准则提供与输入视频序列更大的相关性。所得残留物使用诸如DCT的空间变换进行编码。运动补偿方案用于通过缩放已经为基本层VOP确定的运动矢量来对增强层VOP进行编码。提供了由缩放运动矢量定义其中心的缩小搜索区域。运动补偿方案适用于缩放帧模式或场模式视频。各种处理器配置实现特定可扩展的编码结果。可缩放编码的应用包括立体视频，画中画，预览访问频道和ATM通信。

2. 发明授权

US06005980A Motion estimation and compensation of video object planes for interlaced digital video 失效
公开(公告)号：US06005980A
公开(公告)日：1999-12-21
申请号：US897847
申请日：1997-07-21
申请人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
发明人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
IPC分类号： H04N7/32 , G06T9/00 , H03M7/36 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/50 , G06K9/34
CPC分类号： H04N19/649 , H04N19/105 , H04N19/112 , H04N19/137 , H04N19/186 , H04N19/20 , H04N19/51 , H04N19/517 , H04N19/56 , H04N19/563 , H04N19/583 , H04N19/593 , H04N19/107 , H04N19/61 , H04N19/63
摘要： A motion estimation and compensation technique is provided for interlaced digital video such as video object planes (VOPs). Predictor motion vectors for use in differentially encoding a current field coded macroblock are obtained using the median of motion vectors of surrounding blocks or macroblocks. When a surrounding macroblock is itself interlaced coded, an average motion vector for that macroblock is used, with fractional pixel values being mapped to the half-pixel. When the current block is not interlaced coded but a surrounding block is, the field motion vectors may be used individually or averaged. In a repetitive padding technique for an interlaced coded VOP, the even and odd lines of the VOP and surrounding block are grouped. Within each field, exterior pixels are padded by setting them to the value of the nearest boundary pixel, or to an average of two boundary pixels. The lines are then reordered to provide a single padded reference VOP image.

3. 发明授权

US5991447A Prediction and coding of bi-directionally predicted video object planes for interlaced digital video 失效
标题翻译：用于隔行数字视频的双向预测视频对象平面的预测和编码
公开(公告)号：US5991447A
公开(公告)日：1999-11-23
申请号：US944118
申请日：1997-10-06
申请人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
发明人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
IPC分类号： H04N7/32 , G06K9/00 , G06K9/46 , G06T9/00 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/46 , H04N7/50
CPC分类号： H04N19/649 , H04N19/105 , H04N19/112 , H04N19/137 , H04N19/186 , H04N19/51 , H04N19/517 , H04N19/56 , H04N19/563 , H04N19/577 , H04N19/583 , H04N19/593 , H04N19/107 , H04N19/61 , H04N19/63
摘要： A system for coding of digital video images such as bi-directionally predicted video object planes (B-VOPs), in particular, where the B-VOP and/or a reference image used to code the B-VOP is interlaced coded. For a B-VOP macroblock which is co-sited with a field predicted macroblock of a future anchor picture, direct mode prediction is made by calculating four field motion vectors, then generating the prediction macroblock. The four field motion vectors and their reference fields are determined from (1) an offset term of the current macroblock's coding vector, (2) the two future anchor picture field motion vectors, (3) the reference field used by the two field motion vectors of the co-sited future anchor macroblock, and (4) the temporal spacing, in field periods, between the current B-VOP fields and the anchor fields. Additionally, a coding mode decision process for the current MB selects a forward, backward, or average field coding mode according to a minimum sum of absolute differences (SAD) error which is obtained over the top and bottom fields of the current MB.
摘要翻译：具体地，用于编码B-VOP的B-VOP和/或用于编码B-VOP的参考图像被隔行编码的用于编码诸如双向预测的视频对象平面（B-VOP）的数字视频图像的系统。对于与未来锚图像的场预测宏块共同配置的B-VOP宏块，通过计算四个场运动矢量进行直接模式预测，然后生成预测宏块。从（1）当前宏块的编码矢量的偏移项，（2）两个未来的锚图像场运动矢量确定四个场运动矢量及其参考场，（3）由两个场运动矢量使用的参考场（4）当前B-VOP场和锚场之间的场周期中的时间间隔。此外，当前MB的编码模式决定处理根据当前MB的顶部和底部字段获得的绝对差（SAD）误差的最小和选择前向，后向或平均场编码模式。

4. 发明授权

US5974184A Intra-macroblock DC and AC coefficient prediction for interlaced digital video 失效
标题翻译：用于隔行数字视频的宏块内DC和AC系数预测
公开(公告)号：US5974184A
公开(公告)日：1999-10-26
申请号：US957511
申请日：1997-10-24
申请人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
发明人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
IPC分类号： G06T9/00 , H04N7/26 , H04N7/30 , H04N7/32 , H04N7/34 , H04N7/36 , H04N7/50 , G06K9/006
CPC分类号： H04N19/649 , H04N19/105 , H04N19/112 , H04N19/137 , H04N19/186 , H04N19/51 , H04N19/517 , H04N19/56 , H04N19/563 , H04N19/583 , H04N19/593 , H04N19/107 , H04N19/61 , H04N19/63
摘要： DC and AC DCT transform coefficients of an INTRA coded block are differentially encoded by selecting predictor DC and AC coefficients from a left-hand neighboring block and a top neighboring block. Each block is coded according to a frame mode, a reordered field mode, and a non-reordered field mode. The AC predictor block is selected according to the respective coding modes of the blocks, and the block in which a DC predictor resides. The top block is selected as an AC predictor when the top block and current block are both reordered field mode, or both frame mode and/or non-reordered field mode, and the DC predictor resides in the top block. Zeroed AC spatial transform coefficients are used in place of the AC spatial transform coefficients from the selected block when the selected block is not INTRA coded, or does not reside in the same Video Object Plane (VOP) as the current block. DC coefficients may be non-linearly quantized.
摘要翻译：通过从左侧相邻块和顶部相邻块中选择预测器DC和AC系数来对INTRA编码块的DC和AC DCT变换系数进行差分编码。每个块根据帧模式，重新排序的场模式和非重排序的场模式进行编码。根据块的相应编码模式以及DC预测器驻留的块来选择AC预测块。当顶部块和当前块都是重排序场模式，或者是帧模式和/或非重新排序的场模式，并且DC预测器驻留在顶部块中时，顶部块被选择为AC预测器。当所选择的块不被INTRA编码或者不驻留在与当前块相同的视频对象平面（VOP）中时，使用归零的AC空间变换系数来代替来自所选块的AC空间变换系数。 DC系数可以被非线性量化。

5. 再颁专利

USRE38564E1 Motion estimation and compensation of video object planes for interlaced digital video 有权
标题翻译：用于隔行数字视频的视频对象平面的运动估计和补偿
公开(公告)号：USRE38564E1
公开(公告)日：2004-08-10
申请号：US10028007
申请日：2001-12-20
申请人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
发明人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
IPC分类号： G06K936
CPC分类号： H04N19/649 , H04N19/105 , H04N19/107 , H04N19/112 , H04N19/137 , H04N19/186 , H04N19/20 , H04N19/51 , H04N19/517 , H04N19/56 , H04N19/563 , H04N19/583 , H04N19/593 , H04N19/61 , H04N19/63
摘要： A motion estimation and compensation technique is provided for interlaced digital video such as video object planes (VOPs). Predictor motion vectors for use in differentially encoding a current field coded macroblock are obtained using the median of motion vectors of surrounding blocks or macroblocks. When a surrounding macroblock is itself interlaced coded, an average motion vector for that macroblock is used, with fractional pixel values being mapped to the half-pixel. When the current block is not interlaced coded but a surrounding block is, the field motion vectors may be used individually or averaged. In a repetitive padding technique for an interlaced coded VOP, the even and odd lines of the VOP and surrounding block are grouped. Within each field, exterior pixels are padded by setting them to the value of the nearest boundary pixel, or to an average of two boundary pixels. The lines are then reordered to provide a single padded reference VOP image.

6. 发明授权

US06580754B1 Video compression for multicast environments using spatial scalability and simulcast coding 有权
标题翻译：使用空间可扩展性和联播编码的多播环境的视频压缩
公开(公告)号：US06580754B1
公开(公告)日：2003-06-17
申请号：US09546647
申请日：2000-04-10
申请人： Wade K. Wan , Xuemin Chen , Ajay Luthra
发明人： Wade K. Wan , Xuemin Chen , Ajay Luthra
IPC分类号： H04N712
CPC分类号： H04N21/6405 , H04N19/12 , H04N19/29 , H04N19/33 , H04N21/234327 , H04N21/23439 , H04N21/2662 , H04N21/4516 , H04N21/454
摘要： An optimal system for determining whether simulcast coding (400) or spatial scalability coding (100) should be used to encode video for clients with a specific communication link. Operating points (A′, B′, C′) for both simulcast coding and spatial scalability are also determined. Adaptive switching (3130, 3140) is provided, with the operating points and decision boundaries being used to guide the switching to optimize the quality of the higher-resolution data based on a bit allocation to the associated lower-resolution data. A system for determining the point (A′, C′) of equal quality in both layers of simulcast and spatial scalability coding is also provided. The proportion of bits allocated to the base layer to achieve equal quality is essentially independent of the total bit rate for both simulcast and spatial scalability.
摘要翻译：用于确定联播编码（400）还是空间可伸缩性编码（100）的最佳系统应用于具有特定通信链路的客户端的视频编码。也确定了用于同时播放编码和空间可伸缩性的操作点（A'，B'，C'）。提供自适应切换（3130,3144），其中使用操作点和判定边界来引导切换以基于对相关联的较低分辨率数据的位分配来优化较高分辨率数据的质量。还提供了一种用于确定同时质量的同时质量的点（A'，C'）和空间可伸缩性编码的系统。分配给基本层以实现相同质量的位的比例基本上与同时广播和空间可扩展性的总比特率无关。

7. 发明授权

US06259741B1 Method of architecture for converting MPEG-2 4:2:2-profile bitstreams into main-profile bitstreams 有权
标题翻译：将MPEG-2 4：2：2配置比特流转换为主配置文件位流的架构方法
公开(公告)号：US06259741B1
公开(公告)日：2001-07-10
申请号：US09252135
申请日：1999-02-18
申请人： Xuemin Chen , Limin Wang , Ajay Luthra , Robert O. Eifrig
发明人： Xuemin Chen , Limin Wang , Ajay Luthra , Robert O. Eifrig
IPC分类号： H04N712
CPC分类号： H04N19/186 , H04N19/40
摘要： A system for converting the color format of a digital video bitstream. The system accounts for the allowable formats of the pre- and-post-conversion bitstreams, including quantizer precision level, and whether luma and chroma data have separate quantization matrices, or share a common quantization matrix. In a particular implementation, an MPEG-2 4:2:2 P bitstream having a color format of 4:2:2 or 4:2:0 is converted to a MP bitstream having a color format of 4:2:0. Coding efficiencies are achieved by using the luma quantization matrix to re-quantize the chroma data, and re-using luma motion vectors for performing motion compensation of the chroma data. Further efficiencies can be achieved by representing a 4:2:2 reference picture in a 4:2:0 format for converting inter coded frames, and changing the position of a pixel downsizing filter and clip function. Adjustment of the quantization precision is provided as required. A transcoding function can also be achieved.
摘要翻译：一种用于转换数字视频比特流的颜色格式的系统。系统考虑了前后转换比特流的允许格式，包括量化器精度级别，以及亮度和色度数据是否具有单独的量化矩阵，或共享公共量化矩阵。在具体实现中，将具有4:2:2或4:2:0的颜色格式的MPEG-2 4：2：2比特流转换为具有4:2:0的颜色格式的MP比特流。通过使用亮度量化矩阵来重新量化色度数据并且重新使用亮度运动矢量来执行色度数据的运动补偿来实现编码效率。通过以4：2：0格式表示4：2：2参考图像来转换帧间编码帧，并改变像素缩小滤波器和剪辑功能的位置，可以实现更高的效率。根据需要提供量化精度的调整。还可以实现转码功能。

8. 再颁专利

USRE38563E1 Prediction and coding of bi-directionally predicted video object planes for interlaced digital video 有权
标题翻译：用于隔行数字视频的双向预测视频对象平面的预测和编码
公开(公告)号：USRE38563E1
公开(公告)日：2004-08-10
申请号：US09995997
申请日：2001-11-19
申请人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
发明人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
IPC分类号： G06K946
CPC分类号： H04N19/649 , H04N19/105 , H04N19/107 , H04N19/112 , H04N19/137 , H04N19/186 , H04N19/51 , H04N19/517 , H04N19/56 , H04N19/563 , H04N19/577 , H04N19/583 , H04N19/593 , H04N19/61 , H04N19/63
摘要： A system for coding of digital video images such as bi-directionally predicted video object planes (B-VOPs), in particular, where the B-VOP and/or a reference image used to code the B-VOP is interlaced coded. For a B-VOP macroblock which is co-sited with a field predicted macroblock of a future anchor picture, direct mode prediction is made by calculating four field motion vectors, then generating the prediction macroblock. The four field motion vectors and their reference fields are determined from (1) an offset term of the current macroblock's coding vector, (2) the two future anchor picture field motion vectors, (3) the reference field used by the two field motion vectors of the co-sited future anchor macroblock, and (4) the temporal spacing, in field periods, between the current B-VOP fields and the anchor fields. Additionally, a coding mode decision process for the current MB selects a forward, backward, or average field coding mode according to a minimum sum of absolute differences (SAD) error which is obtained over the top and bottom fields of the current MB.

9. 发明授权

US6026195A Motion estimation and compensation of video object planes for interlaced digital video 有权
标题翻译：用于隔行数字视频的视频对象平面的运动估计和补偿
公开(公告)号：US6026195A
公开(公告)日：2000-02-15
申请号：US301141
申请日：1999-04-28
申请人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
发明人： Robert O. Eifrig , Xuemin Chen , Ajay Luthra
IPC分类号： H04N7/32 , G06T9/00 , H03M7/36 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/50 , G06K9/36
CPC分类号： H04N19/649 , H04N19/105 , H04N19/112 , H04N19/137 , H04N19/186 , H04N19/20 , H04N19/51 , H04N19/517 , H04N19/56 , H04N19/563 , H04N19/583 , H04N19/593 , H04N19/107 , H04N19/61 , H04N19/63
摘要： A motion estimation and compensation technique is provided for interlaced digital video such as video object planes (VOPs). Predictor motion vectors for use in differentially encoding a current field coded macroblock are obtained using the median of motion vectors of surrounding blocks or macroblocks. When a surrounding macroblock is itself interlaced coded, an average motion vector for that macroblock is used, with fractional pixel values being mapped to the half-pixel. When the current block is not interlaced coded but a surrounding block is, the field motion vectors may be used individually or averaged. In a repetitive padding technique for an interlaced coded VOP, the even and odd lines of the VOP and surrounding block are grouped. Within each field, exterior pixels are padded by setting them to the value of the nearest boundary pixel, or to an average of two boundary pixels. The lines are then reordered to provide a single padded reference VOP image.
摘要翻译：为诸如视频对象平面（VOP）的隔行数字视频提供运动估计和补偿技术。使用周围块或宏块的运动矢量的中值来获得用于差分编码当前场编码宏块的预测器运动矢量。当周围宏块本身被隔行编码时，使用该宏块的平均运动矢量，其中分数像素值被映射到半像素。当当前块不是隔行编码而是周围的块时，场运动矢量可以单独使用或平均化。在隔行编码VOP的重复填充技术中，VOP和周围块的偶数和奇数行被分组。在每个场中，通过将外部像素设置为最近边界像素的值，或者平均为两个边界像素来填补外部像素。然后将线重新排序以提供单个填充参考VOP图像。

10. 发明授权

US09904809B2 Method and system for multi-level security initialization and configuration 有权
公开(公告)号：US09904809B2
公开(公告)日：2018-02-27
申请号：US11682544
申请日：2007-03-06
申请人： Shee-Yen Tan , Xuemin Chen , Iue-Shuenn Chen , Qiang Ye
发明人： Shee-Yen Tan , Xuemin Chen , Iue-Shuenn Chen , Qiang Ye
IPC分类号： G06F21/00 , G06F21/85 , G06F21/74 , H04N21/4623 , H04N21/475
CPC分类号： G06F21/85 , G06F21/74 , H04N21/4623 , H04N21/4751
摘要： Aspects of a method and system for multi-level security initialization and configuration are provided. A security system may comprise a security processor, a host processor, and at least one security component, such as a descrambler. The security processor may enable a security component based on information stored within a non-volatile memory integrated within the security processor. The host processor may enable generation of at least one configuration command communicated to the security processor for configuring the enabled security component. The configuration command may correspond to a security control operational mode for the security component that may indicate, for example, activation or deactivation of the security component. The security processor may authenticate a digital signature in the configuration command. Initialization and configuration may be performed during a system boot sequence of the security system.

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