公开(公告)号：US07020198B2

公开(公告)日：2006-03-28

申请号：US10131414

申请日：2002-04-22

Applicant: Limin Wang ,  Ajay Luthra ,  Robert O. Eifrig

Inventor： Limin Wang ,  Ajay Luthra ,  Robert O. Eifrig

IPC: H04N7/12 ,  H04N11/04 ,  H04N11/02

CPC classification number: H04N21/23655 ,  H04N19/114 ,  H04N19/152 ,  H04N19/157 ,  H04N19/159 ,  H04N19/172 ,  H04N19/177 ,  H04N19/40 ,  H04N19/577 ,  H04N19/61

Abstract: A rate control system suitable for use with a digital video transcoder, such as one conforming to the MPEG standard. The proposed rate control system starts coding with any reasonable set of assumed Group of Pictures (GOP) parameters, thereby avoiding a processing delay of about one GOP which would otherwise be incurred to extract the complete GOP structure information from a pre-compressed bit stream. In addition, the system avoids the need to store the data corresponding to the GOP, thereby reducing the memory required for transcoding. Encoding of a first picture in a sequence or GOP begins without a priori knowledge of the picture type of subsequent pictures. A reasonable set of GOP parameters is assumed to determine an encoding bit budget. The bit budget is gradually corrected as successive pictures are coded according to their picture types. Changes in the GOP structure of pre-compressed bitstreams can be addressed, for example, when switching channels, inserting commercials, and the like. Target rates with incorrect starting GOP parameters will converge within a few GOPs.

公开(公告)号：US20050117650A1

公开(公告)日：2005-06-02

申请号：US11027265

申请日：2004-12-30

Applicant: Limin Wang ,  Rajeev Gandhi ,  Krit Panusopone ,  Ajay Luthra

Inventor： Limin Wang ,  Rajeev Gandhi ,  Krit Panusopone ,  Ajay Luthra

IPC: H04N7/32 ,  G06T9/00 ,  H03M7/36 ,  H04N7/26 ,  H04N7/36 ,  H04N7/12

CPC classification number: H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/573

Abstract: A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into smaller blocks. The method entails encoding and decoding each of the smaller blocks in each picture in said stream of pictures in either frame mode or in field mode.

Abstract translation: 数字视频内容的编码和解码方法和系统。 数字视频内容包括可以是帧内，预测或双预测图像的图像流。 每个图像包括可以进一步分割成较小块的宏块。 该方法需要在帧模式或场模式下对所述图像流中的每个图像中的每个较小块进行编码和解码。

公开(公告)号：US06570922B1

公开(公告)日：2003-05-27

申请号：US09198867

申请日：1998-11-24

Applicant: Limin Wang ,  Ajay Luthra ,  Robert O. Eifrig

Inventor： Limin Wang ,  Ajay Luthra ,  Robert O. Eifrig

IPC: H04N712

CPC classification number: H04N21/23655 ,  H04N19/114 ,  H04N19/152 ,  H04N19/157 ,  H04N19/159 ,  H04N19/172 ,  H04N19/177 ,  H04N19/40 ,  H04N19/577 ,  H04N19/61

Abstract: A rate control system suitable for use with a digital video transcoder, such as one conforming to the MPEG standard. The proposed rate control system starts coding with any reasonable set of assumed Group of Pictures (GOP) parameters, thereby avoiding a processing delay of about one GOP which would otherwise be incurred to extract the complete GOP structure information from a pre-compressed bit stream. In addition, the system avoids the need to store the data corresponding to the GOP, thereby reducing the memory required for transcoding. Encoding of a first picture in a sequence or GOP begins without a priori knowledge of the picture type of subsequent pictures. A reasonable set of GOP parameters is assumed to determine an encoding bit budget. The bit budget is gradually corrected as successive pictures are coded according to their picture types. Changes in the GOP structure of pre-compressed bitstreams can be addressed, for example, when switching channels, inserting commercials, and the like. Target rates with incorrect starting GOP parameters will converge within a few GOPs.

Abstract translation: 一种适用于数字视频转码器的速率控制系统，例如符合MPEG标准的数字视频转码器。 所提出的速率控制系统以任何合理的假想图像组（GOP）参数开始编码，从而避免了大约一个GOP的处理延迟，否则将从预压缩位流中提取完整的GOP结构信息。 此外，系统避免了存储对应于GOP的数据的需要，从而减少了转码所需的存储器。 序列或GOP中的第一图像的编码开始于对随后图像的图像类型的先验知识。 假设合理的GOP参数集合来确定编码比特预算。 随着连续的图像根据图像的类型被编码，位预算逐渐被校正。 可以解决预压缩比特流的GOP结构的变化，例如，当切换频道，插入商业广告等时。 具有不正确起始GOP参数的目标速率将在几个GOP内收敛。

公开(公告)号：US06259741B1

公开(公告)日：2001-07-10

申请号：US09252135

申请日：1999-02-18

Applicant: Xuemin Chen ,  Limin Wang ,  Ajay Luthra ,  Robert O. Eifrig

Inventor： Xuemin Chen ,  Limin Wang ,  Ajay Luthra ,  Robert O. Eifrig

IPC: H04N712

CPC classification number: H04N19/186 ,  H04N19/40

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US6151362A

公开(公告)日：2000-11-21

申请号：US369624

申请日：1999-08-06

Applicant: Limin Wang

Inventor： Limin Wang

IPC: H04N7/50 ,  H04N13/00 ,  H04N7/12

CPC classification number: H04N19/174 ,  H04N19/115 ,  H04N19/117 ,  H04N19/124 ,  H04N19/14 ,  H04N19/149 ,  H04N19/159 ,  H04N19/172 ,  H04N19/177 ,  H04N19/61 ,  H04N13/0003 ,  H04N13/0059 ,  H04N19/597 ,  H04N2013/0081

Abstract: A method and apparatus are provided for controlling and balancing a quality ratio between left and right channels of a stereoscopic video sequence. A complexity measure for each of the channels is first determined. Thereafter, a number of bits representing the video sequence is allocated between the channels according to each channel's complexity. The resultant joint rate control allows the bit rates for the two channels to vary according to the complexity measures of their pictures, while the aggregate bit rate is maintained at the channel capacity, which is a constant value.

Abstract translation: 提供了一种用于控制和平衡立体视频序列的左和右声道之间的质量比的方法和装置。 首先确定每个通道的复杂度测量。 此后，根据每个信道的复杂度，在信道之间分配表示视频序列的比特数。 所得到的联合速率控制允许两个信道的比特率根据其图像的复杂度测量而变化，而聚合比特率保持在作为恒定值的信道容量。

公开(公告)号：US10174123B2

公开(公告)日：2019-01-08

申请号：US14001105

申请日：2012-02-22

Applicant: Zhiqian Zhang ,  Wei Zhao ,  Limin Wang ,  Haibo Han ,  Baocai Xing

Inventor： Zhiqian Zhang ,  Wei Zhao ,  Limin Wang ,  Haibo Han ,  Baocai Xing

IPC: C07K16/30 ,  C07K16/28 ,  C12N5/20 ,  C12N5/10 ,  C12N15/85 ,  A61K39/00 ,  A61K39/395 ,  A61K45/06 ,  C12Q1/6886 ,  G01N33/574 ,  G01N33/68

Abstract: Disclosed is a method for searching, identifying, or validating a marker CACNA2D1 of tumor-initiating cells. The method comprises a step of immunizing an animal using HEP-12 cells originating from a recurrent tumor and rich in originating cells. Also disclosed is a monoclonal antibody specially recognizing CACNA2D1 or antigen-binding fragments thereof, and the use thereof for treating or preventing tumors or diseases or conditions related to CACNA2D1.

公开(公告)号：US09036706B2

公开(公告)日：2015-05-19

申请号：US13415918

申请日：2012-03-09

Applicant: Jian Lou ,  Ajay Luthra ,  Koohyar Minoo ,  Krit Panusopone ,  Limin Wang

Inventor： Jian Lou ,  Ajay Luthra ,  Koohyar Minoo ,  Krit Panusopone ,  Limin Wang

IPC: H04N7/12 ,  H04N19/523 ,  H04N19/61 ,  H04N19/82

CPC classification number: H04N19/523 ,  H04N19/61 ,  H04N19/82

Abstract: In one embodiment, a method for encoding or decoding video content is provided. The method includes receiving a plurality of full-pel pixel values. A set of coefficients is determined for an interpolation filter to interpolate a sub-pel pixel value for a motion compensation operation. Different coefficients are assigned to weight the plurality of full-pel pixel values in different operations in the interpolation filter. The sub-pel pixel values from the different operations are determined. Then, the method outputs the interpolated sub-pel pixel value for use in the motion compensation operation.

Abstract translation: 在一个实施例中，提供了一种用于编码或解码视频内容的方法。 该方法包括接收多个全像素像素值。 为内插滤波器确定一组系数以内插用于运动补偿操作的子像素像素值。 分配不同的系数以在内插滤波器中的不同操作中加权多个全像素像素值。 确定来自不同操作的子像素像素值。 然后，该方法输出用于运动补偿操作的内插子像素像素值。

公开(公告)号：US08737480B2

公开(公告)日：2014-05-27

申请号：US13351906

申请日：2012-01-17

Applicant: Limin Wang ,  Jian Lou ,  Yue Yu

Inventor： Limin Wang ,  Jian Lou ,  Yue Yu

IPC: H04N7/26

CPC classification number: H04N19/00684 ,  H04N19/176 ,  H04N19/196 ,  H04N19/197 ,  H04N19/513 ,  H04N19/52

Abstract: In one embodiment, a spatial merge mode or a temporal merge mode for a block of video content may be used in merging motion parameters. Both spatial and temporal merge parameters are considered concurrently and do not require utilization of bits or flags or indexing to signal a decoder. If the spatial merge mode is determined, the method merges the block of video content with a spatially-located block, where merging shares motion parameters between the spatially-located block and the block of video content. If the temporal merge mode is determined, the method merges the block of video content with a temporally-located block, where merging shares motion parameters between the temporally-located block and the block of video content.

Abstract translation: 在一个实施例中，用于视频内容块的空间合并模式或时间合并模式可以用于合并运动参数。 同时考虑空间和时间合并参数，并且不需要利用位或标志或索引来对解码器发信号。 如果确定空间合并模式，则该方法将视频内容块与空间位置块合并，其中合并在空间位置块和视频内容块之间共享运动参数。 如果确定了时间合并模式，则该方法将视频内容块与时间上定位的块合并，其中合并在时间定位的块和视频内容块之间共享运动参数。

公开(公告)号：US20130143286A1

公开(公告)日：2013-06-06

申请号：US13698708

申请日：2010-11-22

Applicant: Ping XU ,  Limin Wang ,  Bo Zhao ,  Cuiqing Ma ,  Fei Su ,  Fei Tao ,  Hongzhi Tang

Inventor： Ping XU ,  Limin Wang ,  Bo Zhao ,  Cuiqing Ma ,  Fei Su ,  Fei Tao ,  Hongzhi Tang

IPC: C12N15/75

CPC classification number: C12N15/75 ,  C12P7/56 ,  C12P2203/00 ,  C12R1/07

Abstract: The invention is concerned with the strains of B. coagulans for lactic acid production and the related methods, in which the carbon sources are pentose or hexose or the agricultural or industrial wastes containing pentose or hexose or a mixture of both. According to the invention, the highest amount of L-lactic acid produced from glucose is 173 g/L, the optical purity is over 99%, the yield is up to 0.98, and the productivity is up to 2.4 g/L per hour. The highest amount of L-lactic acid produced from xylose is 195 g/L, the optical purity is over 99%, the yield is up to 0.98, and the productivity is up to 2.7 g/L per hour. The highest amount of L-lactic acid produced from reducing sugars in xylitol byproducts is 106 g/L, the optical purity is over 99%, and the productivity is up to 2.08 g/L per hour. The B. coagulans strains XZL4 (DSM No. 23183) and XZL9 (DSM No. 23184) of the invention can directly utilize various reducing sugars in xylitol byproducts to produce high amounts of L-lactic acid, which improves the production efficiency at low costs, and the strains are, thus, appropriate for industrial productions.

Abstract translation: 本发明涉及用于乳酸生产的凝固芽孢杆菌菌株及其相关方法，其中碳源为戊糖或己糖，或者含有戊糖或己糖的农业或工业废物或两者的混合物。 根据本发明，葡萄糖产生的L-乳酸量最高为173g / L，光学纯度超过99％，产率高达0.98，生产率高达2.4g / L。 由木糖产生的L-乳酸含量最高为195g / L，光学纯度超过99％，产率高达0.98，生产率高达2.7g / L。 由木糖醇副产物中的还原糖产生的最大量的L-乳酸为106g / L，光学纯度为99％以上，生产率高达每小时2.08g / L。 本发明的凝结芽孢杆菌菌株XZL4（DSM No.23183）和XZL9（DSM No.23184）可以直接利用木糖醇副产物中的各种还原糖来生产大量的L-乳酸，以低成本提高生产效率 ，因此适用于工业生产。

公开(公告)号：US08437581B2

公开(公告)日：2013-05-07

申请号：US13406613

申请日：2012-02-28

Applicant: Jian Lou ,  David M. Baylon ,  Koohyar Minoo ,  Krit Panusopone ,  Limin Wang

Inventor： Jian Lou ,  David M. Baylon ,  Koohyar Minoo ,  Krit Panusopone ,  Limin Wang

IPC: G06K9/32

CPC classification number: G06T3/4007 ,  H04N19/523 ,  H04N19/61 ,  H04N19/82

Abstract: A method and system for interpolating video pixels is described, in which the value of a first fractional pixel is calculated based on the values of the first set of integer pixels, while the value of a second fractional pixel is calculated based on the values of the second set of integer pixels. The first set of integer pixels is not equal to the second set of integer pixels. For example, the first and second set may contain different integer pixels and may contain different numbers of integer pixels.