公开(公告)号：US07715480B2

公开(公告)日：2010-05-11

申请号：US10688133

申请日：2003-10-17

申请人： Beibei Wang ,  Anthony Vetro ,  Yao Wang

发明人： Beibei Wang ,  Anthony Vetro ,  Yao Wang

IPC分类号： H04N7/12

CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/39 ,  H04N19/61 ,  H04N19/63 ,  H04N19/635

摘要： A method encodes a video by applying a dual-tree discrete wavelet transform to the video to generate sequences of wavelet coefficients. The sequences are compressed to produce a compressed bitstream corresponding to the video. The compression iteratively selects the wavelet coefficients in a large to small order, and entropy encodes the selected wavelet coefficient.

摘要翻译： 一种方法通过对视频应用双树离散小波变换来编码视频以产生小波系数序列。 这些序列被压缩以产生对应于视频的压缩比特流。 压缩以大到小的顺序迭代地选择小波系数，并且熵编码所选择的小波系数。

公开(公告)号：US08242703B2

公开(公告)日：2012-08-14

申请号：US12686333

申请日：2010-01-12

申请人： Beibei Wang ,  Xinbo Ruan ,  Ming Xu ,  Kai Yao

发明人： Beibei Wang ,  Xinbo Ruan ,  Ming Xu ,  Kai Yao

IPC分类号： H05B41/16

CPC分类号： H05B33/0815

摘要： A driving apparatus is provided and configured to suit driving at least a string of light emitting diodes (LEDs). The driving apparatus includes a flyback power factor correction (PFC) converter, a harmonics-filtering unit and a control unit. The flyback PFC converter works in an operation mode according to a pulse-width modulation (PWM) signal and receives an AC power so as to convert the AC power into a pulsating current. The harmonics-filtering unit is coupled to the flyback PFC converter and the string of LEDs, for receiving the pulsating current and filtering out the high-frequency harmonic components in the pulsating current so as to drive the string of LEDs. The control unit is coupled to the flyback PFC converter and the harmonics-filtering unit, for producing the PWM signal according to the AC power and the pulsating current, and reducing the peak-to-average ratio (PAR) of the pulsating current.

摘要翻译： 驱动装置被提供和配置为适合驱动至少一串发光二极管（LED）。 驱动装置包括反激式功率因数校正（PFC）转换器，谐波滤波单元和控制单元。 回扫PFC转换器根据脉宽调制（PWM）信号工作在运行模式，并接收交流电源，以将交流电转换为脉动电流。 谐波滤波单元耦合到回扫PFC转换器和LED串，用于接收脉动电流并滤除脉动电流中的高频谐波分量，以驱动LED串。 控制单元耦合到回扫PFC转换器和谐波滤波单元，用于根据AC功率和脉动电流产生PWM信号，并降低脉动电流的峰值平均比（PAR）。

公开(公告)号：US20100040146A1

公开(公告)日：2010-02-18

申请号：US12310757

申请日：2007-02-15

申请人： Beibei Wang ,  Peng Yin

发明人： Beibei Wang ,  Peng Yin

IPC分类号： H04N7/26

CPC分类号： H04N19/97 ,  H04N19/194 ,  H04N19/61 ,  H04N19/63

摘要： There are provided a video encoder, a video decoder and corresponding method for encoding and decoding video signal data using a multiple-pass video encoding scheme. The video encoder includes a motion estimator and a decomposition module. The motion estimator performs motion estimation on the video signal data to obtain a motion residual corresponding to the video signal data in a first encoding pass. The decomposition module, in signal communication with the motion estimator, decomposes the motion residual in a subsequent encoding pass.

摘要翻译： 提供了一种视频编码器，视频解码器和用于使用多路视频编码方案对视频信号数据进行编码和解码的相应方法。 视频编码器包括运动估计器和分解模块。 运动估计器对视频信号数据执行运动估计，以获得与第一编码通过中的视频信号数据相对应的运动残差。 与运动估计器进行信号通信的分解模块在随后的编码遍中分解运动残差。

公开(公告)号：US20130027568A1

公开(公告)日：2013-01-31

申请号：US13193802

申请日：2011-07-29

申请人： Dekun Zou ,  Beibei Wang

发明人： Dekun Zou ,  Beibei Wang

IPC分类号： H04N17/00

CPC分类号： H04N7/50 ,  H04N17/004 ,  H04N19/172 ,  H04N19/61

摘要： Systems and methods of objective video quality measurement based on support vector machines. The video quality measurement systems can obtain information pertaining to features of a target training video, obtain corresponding information pertaining to features of a reference version of the target training video, and employ the target training features and/or the reference training features to build video quality models using such support vector machines. Based on the target training features and/or the reference training features used to build such video quality models, the video quality models can be made to conform more closely to the human visual system. Moreover, using such video quality models in conjunction with target features of a target video whose perceptual quality is to be measured, and/or reference features of a reference video, the video quality measurement systems can be employed to predict measurements of the perceptual quality of such a target video with increased accuracy.

摘要翻译： 基于支持向量机的客观视频质量测量的系统和方法。 视频质量测量系统可以获得关于目标训练视频的特征的信息，获得与目标训练视频的参考版本的特征相关的相关信息，并且使用目标训练特征和/或参考训练特征来构建视频质量 使用这种支持向量机的模型。 基于用于构建这样的视频质量模型的目标训练特征和/或参考训练特征，可以使视频质量模型更符合人类视觉系统。 此外，使用这样的视频质量模型结合目标视频的感知质量要被测量的目标特征和/或参考视频的参考特征，可以采用视频质量测量系统来预测感知质量的测量 这样的目标视频具有更高的准确性。

公开(公告)号：US20200174984A1

公开(公告)日：2020-06-04

申请号：US16204921

申请日：2018-11-29

申请人： Beibei Wang ,  Patrick Driscoll ,  Divyakumar Menghani ,  Luxin Kang

发明人： Beibei Wang ,  Patrick Driscoll ,  Divyakumar Menghani ,  Luxin Kang

IPC分类号： G06F16/22 ,  G06F16/26

摘要： Disclosed are systems, methods, and non-transitory computer-readable media for generating a diversity index. A diversity index system determines distribution values indicating a distribution of a set of users among demographic groups defined by two or more diversity dimensions. The diversity index system generates a distribution vector based on the distribution values. The diversity index system determines, based on the distribution vector and a similarity matrix, a set of diversity index values forming a diversity index vector. The similarity index includes a set of similarity scores for the demographic groups. The diversity index system determines a diversity index score for the set of users based on the diversity index vector and the distribution vector. The diversity index score indicates a level of diversity amongst the users from the set of users.

公开(公告)号：US09137717B2

公开(公告)日：2015-09-15

申请号：US13561317

申请日：2012-07-30

申请人： Haitong Sun ,  Beibei Wang ,  Sharad Deepak Sambhwani ,  Rohit Kapoor

发明人： Haitong Sun ,  Beibei Wang ,  Sharad Deepak Sambhwani ,  Rohit Kapoor

IPC分类号： H04W72/04 ,  H04W36/00

CPC分类号： H04W36/0083 ,  H04W72/0453

摘要： A method operable at a user equipment configured for wireless communication over a dual-frequency, dual-cell network is disclosed includes a primary carrier and a secondary carrier. The method includes maintaining an active set corresponding to the primary carrier; maintaining a virtual active set corresponding to the secondary carrier; and transmitting a control signal including a virtual mobility event corresponding to a change in the virtual active set. An apparatus for performing the method is also disclosed.

摘要翻译： 公开了一种在配置成通过双频双小区网络进行无线通信的用户设备中可操作的方法，其包括主载波和辅载波。 该方法包括维护对应于主载波的活动集合; 保持对应于次载波的虚拟主动集合; 以及发送包括与所述虚拟活动集中的变化相对应的虚拟移动性事件的控制信号。 还公开了一种用于执行该方法的装置。

公开(公告)号：US08804815B2

公开(公告)日：2014-08-12

申请号：US13193802

申请日：2011-07-29

申请人： Dekun Zou ,  Beibei Wang

发明人： Dekun Zou ,  Beibei Wang

IPC分类号： H04N7/50 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66 ,  H04N7/26

CPC分类号： H04N7/50 ,  H04N17/004 ,  H04N19/172 ,  H04N19/61

摘要： Systems and methods of objective video quality measurement based on support vector machines. The video quality measurement systems can obtain information pertaining to features of a target training video, obtain corresponding information pertaining to features of a reference version of the target training video, and employ the target training features and/or the reference training features to build video quality models using such support vector machines. Based on the target training features and/or the reference training features used to build such video quality models, the video quality models can be made to conform more closely to the human visual system. Moreover, using such video quality models in conjunction with target features of a target video whose perceptual quality is to be measured, and/or reference features of a reference video, the video quality measurement systems can be employed to predict measurements of the perceptual quality of such a target video with increased accuracy.

摘要翻译： 基于支持向量机的客观视频质量测量的系统和方法。 视频质量测量系统可以获得关于目标训练视频的特征的信息，获得与目标训练视频的参考版本的特征相关的相关信息，并且使用目标训练特征和/或参考训练特征来构建视频质量 使用这种支持向量机的模型。 基于用于构建这样的视频质量模型的目标训练特征和/或参考训练特征，可以使视频质量模型更符合人类视觉系统。 此外，使用这样的视频质量模型结合目标视频的感知质量要被测量的目标特征和/或参考视频的参考特征，可以采用视频质量测量系统来预测感知质量的测量 这样的目标视频具有更高的准确性。

公开(公告)号：US20120307074A1

公开(公告)日：2012-12-06

申请号：US13151761

申请日：2011-06-02

申请人： Sitaram Bhagavathy ,  Jeffrey A. Bloom ,  Dekun Zou ,  Ran Ding ,  Beibei Wang ,  Tao Liu ,  Niranjan Narvekar

发明人： Sitaram Bhagavathy ,  Jeffrey A. Bloom ,  Dekun Zou ,  Ran Ding ,  Beibei Wang ,  Tao Liu ,  Niranjan Narvekar

IPC分类号： H04N17/00

CPC分类号： H04N17/004 ,  H04N19/132 ,  H04N19/154 ,  H04N19/172 ,  H04N19/40 ,  H04N19/86

摘要： Systems and methods of objective video quality measurement that employ a reduced-reference approach to video quality measurement. Such systems and methods of objective video quality measurement can extract information pertaining to one or more features of a target video whose perceptual quality is to be measured, extract information pertaining to one or more features of a reference video, and employ one or more prediction functions involving the target features and the reference features to provide a measurement of the perceptual quality of the target video.

摘要翻译： 使用缩减参考方法进行视频质量测量的客观视频质量测量的系统和方法。 客观视频质量测量的这种系统和方法可以提取关于感知质量要被测量的目标视频的一个或多个特征的信息，提取与参考视频的一个或多个特征有关的信息，并采用一个或多个预测函数 涉及目标特征和参考特征以提供目标视频的感知质量的度量。

公开(公告)号：US20120206610A1

公开(公告)日：2012-08-16

申请号：US13025558

申请日：2011-02-11

申请人： Beibei Wang ,  Dekun Zou ,  Ran Ding ,  Tao Liu ,  Sitaram Bhagavathy ,  Niranjan Narvekar ,  Jeffrey A. Bloom ,  Glenn L. Cash

发明人： Beibei Wang ,  Dekun Zou ,  Ran Ding ,  Tao Liu ,  Sitaram Bhagavathy ,  Niranjan Narvekar ,  Jeffrey A. Bloom ,  Glenn L. Cash

IPC分类号： H04N17/00

CPC分类号： H04N17/004

摘要： Systems and methods of perceptual quality monitoring of video information, communications, and entertainment that can estimate the perceptual quality of video with high accuracy, and can be used to produce quality scores that better correlate with subjective quality scores of an end user. The systems and methods of perceptual quality monitoring of video can generate, from an encoded input video bitstream, estimates of one or more quality parameters relating to the video, such as the coding bit rate parameter, the video frame rate parameter, and the packet loss rate parameter, and provide these video quality parameter estimates to a predetermined video quality estimation model. Because the estimates of the video quality parameters are generated from the encoded input video bitstream as it is being received, the systems and methods are suitable for use as QoE monitoring tools.

摘要翻译： 视频信息，通信和娱乐的感知质量监控的系统和方法可以高精度地估计视频的感知质量，并且可以用于产生与最终用户的主观质量得分更好相关的质量分数。 视频的感知质量监视的系统和方法可以从编码的输入视频比特流中产生与视频相关的一个或多个质量参数的估计，例如编码比特率参数，视频帧速率参数和分组丢失 速率参数，并将这些视频质量参数估计提供给预定的视频质量估计模型。 因为视频质量参数的估计在编码的输入视频比特流被接收时产生，所以系统和方法适合用作QoE监视工具。

公开(公告)号：US20110037414A1

公开(公告)日：2011-02-17

申请号：US12686333

申请日：2010-01-12

申请人： Beibei Wang ,  Xinbo Ruan ,  Ming Xu ,  Kai Yao

发明人： Beibei Wang ,  Xinbo Ruan ,  Ming Xu ,  Kai Yao

IPC分类号： H05B41/36

CPC分类号： H05B33/0815

摘要： A driving apparatus is provided and configured to suit driving at least a string of light emitting diodes (LEDs). The driving apparatus includes a flyback power factor correction (PFC) converter, a harmonics-filtering unit and a control unit. The flyback PFC converter works in an operation mode according to a pulse-width modulation (PWM) signal and receives an AC power so as to convert the AC power into a pulsating current. The harmonics-filtering unit is coupled to the flyback PFC converter and the string of LEDs, for receiving the pulsating current and filtering out the high-frequency harmonic components in the pulsating current so as to drive the string of LEDs. The control unit is coupled to the flyback PFC converter and the harmonics-filtering unit, for producing the PWM signal according to the AC power and the pulsating current, and reducing the peak-to-average ratio (PAR) of the pulsating current.

摘要翻译： 驱动装置被提供和配置为适合驱动至少一串发光二极管（LED）。 驱动装置包括反激式功率因数校正（PFC）转换器，谐波滤波单元和控制单元。 回扫PFC转换器根据脉宽调制（PWM）信号工作在运行模式，并接收交流电源，以将交流电转换为脉动电流。 谐波滤波单元耦合到回扫PFC转换器和LED串，用于接收脉动电流并滤除脉动电流中的高频谐波分量，以驱动LED串。 控制单元耦合到回扫PFC转换器和谐波滤波单元，用于根据AC功率和脉动电流产生PWM信号，并降低脉动电流的峰值平均比（PAR）。