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1. 发明授权

US09331887B2 Peer-aware ranking of voice streams 有权
标题翻译：语音流的对等感知排名
公开(公告)号：US09331887B2
公开(公告)日：2016-05-03
申请号：US11277932
申请日：2006-03-29
申请人： Li-wei He , Dinei A. Florencio , Xun Xu
发明人： Li-wei He , Dinei A. Florencio , Xun Xu
IPC分类号： H04L12/16 , H04L29/06 , H04L12/66
CPC分类号： H04L29/06027 , H04L12/66 , H04L65/403 , H04L65/4038
摘要： A peer-aware voice stream ranking method that makes decisions based on information about participants of a voice conference over a network. Whether to send a participant's own audio packet out on the network is based both on information about the participant's own voice packet and voice packets that the participant receives from other clients. A Voice Activity Score (VAS) is computed for each frame of a particular voice stream. The VAS includes a voiceness component, indicating the likelihood that the audio frame contains speech or voice, and an energy level component that indicating the ratio of current frame energy to the long-term average of energy for a current speaker. Using the VAS from the participants, the method also ranks the client's voice stream as compared to other clients' voice streams in the voice conference. If there are participants higher ranking, the client's voice stream is not sent.
摘要翻译：基于通过网络进行语音会议的参与者的信息进行决策的对等感知语音流排序方法。是否在网络上发送参与者自己的音频数据包都是基于参与者自己的语音数据包和参与者从其他客户端收到的语音数据包的信息。为特定语音流的每个帧计算语音活动分数（VAS）。 VAS包括声音分量，指示音频帧包含语音或语音的可能性，以及指示当前帧能量与当前说话者的长期能量平均值的比率的能量分量。使用来自参与者的VAS，与语音会议中的其他客户端的语音流相比，该方法还对客户端的语音流进行排序。如果参与者排名较高，则不会发送客户端的语音流。

2. 发明授权

US08200681B2 Collaborative media recommendation and sharing technique 有权
标题翻译：合作媒体推荐和分享技术
公开(公告)号：US08200681B2
公开(公告)日：2012-06-12
申请号：US11843129
申请日：2007-08-22
申请人： Rajesh Hedge , Zicheng Liu , Li-wei He , Philip Chou , Christopher Meek
发明人： Rajesh Hedge , Zicheng Liu , Li-wei He , Philip Chou , Christopher Meek
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/30029 , G06F17/30053
摘要： A media recommendation and sharing technique that employs agents on media players/devices to expand the scope of media sharing scenarios. The technique assists a user in discovering media items, such as, for example, music, recordings, play lists, pictures, video games, on nearby media players or devices (devices which are capable of receiving, storing and playing media) which are interesting to the user. The collaborative media recommendation and sharing technique contemporaneously determines a user's media preferences based on media stored on a pair of media devices and recommends media for potential sharing based on these determined user preferences.
摘要翻译：媒体推荐和分享技术，在媒体播放器/设备上使用代理扩展媒体共享场景的范围。该技术帮助用户发现媒体项目，例如音乐，录音，播放列表，图片，视频游戏，附近的媒体播放器或设备（能够接收，存储和播放媒体的设备），这是有趣的给用户合作媒体推荐和共享技术同时基于存储在一对媒体设备上的媒体同时确定用户的媒体偏好，并且基于这些确定的用户偏好推荐媒体进行潜在共享。

3. 发明授权

US08041710B2 Automatic diagnosis of search relevance failures 有权
标题翻译：自动诊断搜索相关性故障
公开(公告)号：US08041710B2
公开(公告)日：2011-10-18
申请号：US12270201
申请日：2008-11-13
申请人： Li-wei He , Wenzhao Tan , Jinliang Fan , Yi-Min Wang , Xiaoxin Yin
发明人： Li-wei He , Wenzhao Tan , Jinliang Fan , Yi-Min Wang , Xiaoxin Yin
IPC分类号： G06F17/30
CPC分类号： G06F17/30867
摘要： Search relevance failures are diagnosed automatically. Users presented with unsatisfactory search results can report their dissatisfaction through various mechanisms. Dissatisfaction reports can trigger automatic investigation into the root cause of such dissatisfaction. Based on the identified root cause, a search engine can be modified to resolve the issue creating dissatisfaction thereby improving search engine quality.
摘要翻译：搜索相关性故障自动诊断。用户不满意的搜索结果可以通过各种机制报告他们的不满。不满意的报告可能引发自动调查，造成这种不满的根本原因。基于确定的根本原因，可以修改搜索引擎来解决创建不满意的问题，从而提高搜索引擎的质量。

4. 发明授权

US08005023B2 Client-side echo cancellation for multi-party audio conferencing 有权
标题翻译：客户端回声消除多方音频会议
公开(公告)号：US08005023B2
公开(公告)日：2011-08-23
申请号：US11763224
申请日：2007-06-14
申请人： Junlin Li , Li-wei He , Dinei Florencio
发明人： Junlin Li , Li-wei He , Dinei Florencio
IPC分类号： H04L12/16 , H04B3/20
CPC分类号： H04L12/16
摘要： A “Client-Side Echo Canceller” provides a unique system and method for reducing Multipoint Control Unit (MCU) computational overhead in a multi-point audio conference. In general, the local audio input signal of each client is transmitted in real-time to the MCU. The MCU then combines the audio input signals of all clients to create a single composite signal that is transmitted back to all clients in real-time. Each client then locally processes the composite signal to remove each client's local contribution to the composite signal prior to local playback in order to eliminate a local echo of each client's local audio input. In various embodiments, local cancellation of the local audio input from the composite signal is performed on either a time domain or a transform domain representation of the composite signal. Further, since each client receives the same signal, MCU transmission bandwidth can be reduced via multicast transmissions.
摘要翻译： “客户端回声消除器”提供了一种用于在多点音频会议中减少多点控制单元（MCU）计算开销的独特系统和方法。通常，每个客户端的本地音频输入信号实时传输到MCU。然后，MCU组合所有客户端的音频输入信号，以创建单个复合信号，并将其实时传输回所有客户端。然后，每个客户端本地处理复合信号以在本地回放之前去除每个客户端对复合信号的局部贡献，以便消除每个客户端的本地音频输入的本地回波。在各种实施例中，在复合信号的时域或变换域表示上执行来自复合信号的本地音频输入的局部消除。此外，由于每个客户端接收到相同的信号，所以可以通过多播传输来减少MCU传输带宽。

5. 发明授权

US07924655B2 Energy-based sound source localization and gain normalization 有权
标题翻译：基于能量的声源定位和增益归一化
公开(公告)号：US07924655B2
公开(公告)日：2011-04-12
申请号：US11623643
申请日：2007-01-16
申请人： Zicheng Liu , Zhengyou Zhang , Li-wei He , Philip A. Chou , Minghua Chen
发明人： Zicheng Liu , Zhengyou Zhang , Li-wei He , Philip A. Chou , Minghua Chen
IPC分类号： H04R5/02
CPC分类号： G01S11/14 , G01S5/30 , H04M3/56 , H04N7/141 , H04N7/15 , H04R3/005 , H04R2420/07
摘要： An energy based technique to estimate the positions of people speaking from an ad hoc network of microphones. The present technique does not require accurate synchronization of the microphones. In addition, a technique to normalize the gains of the microphones based on people's speech is presented, which allows aggregation of various audio channels from the ad hoc microphone network into a single stream for audio conferencing. The technique is invariant of the speaker's volumes thus making the system easy to deploy in practice.
摘要翻译：一种基于能量的技术来估计从麦克风的自组织网络发言的人的位置。本技术不需要麦克风的准确同步。此外，提出了一种基于人们的语音来归一化麦克风的增益的技术，其允许将各种音频频道从专用麦克风网络聚合成用于音频会议的单个流。该技术是扬声器音量不变的，从而使得系统在实践中容易部署。

6. 发明授权

US07739715B2 Variable play speed control for media streams 有权
标题翻译：媒体流的可变播放速度控制
公开(公告)号：US07739715B2
公开(公告)日：2010-06-15
申请号：US10602847
申请日：2003-06-24
申请人： Li-Wei He , Adil Sherwani , Patrick N. Nelson , Richard William Saunders , Jonathan M. Cain , Anders E. Klemets
发明人： Li-Wei He , Adil Sherwani , Patrick N. Nelson , Richard William Saunders , Jonathan M. Cain , Anders E. Klemets
IPC分类号： H04N7/173
CPC分类号： H04L65/4092 , H04L29/06027 , H04L65/80
摘要： Systems and methods are described that support variable play speed control for media streams. The variable play speed control for media streams discussed herein provides an end-to-end solution for media stream delivery, playback, and user interface that enables end users and software developers to dynamically control the playback speed of media streams without losing the ability to comprehend the media content.
摘要翻译：描述了支持媒体流的可变播放速度控制的系统和方法。本文讨论的媒体流的可变播放速度控制提供了用于媒体流传送，回放和用户界面的端到端解决方案，其使终端用户和软件开发者能够动态地控制媒体流的播放速度，而不失去理解的能力媒体内容。

7. 发明授权

US07502505B2 High-quality gradient-corrected linear interpolation for demosaicing of color images 有权
标题翻译：高质量梯度校正线性插值，用于彩色图像的去马赛克
公开(公告)号：US07502505B2
公开(公告)日：2009-03-10
申请号：US10801450
申请日：2004-03-15
申请人： Henrique S. Malvar , Li-wei He , Ross Cutler
发明人： Henrique S. Malvar , Li-wei He , Ross Cutler
IPC分类号： G06K9/00 , G06K9/32
CPC分类号： G06T3/4015
摘要： A gradient-corrected linear interpolation method and system for the demosaicing of color images. The method and system compute an interpolation using some a current technique (preferably a bilinear interpolation technique to reduce computational complexity), compute a correction term (such as a gradient of a desired color at a given pixel), and linearly combine the interpolation and the correction term to produce a corrected, high-quality interpolation of a missing color value at a pixel. The correction term may be a gradient correction term computed from the current color of the current pixel. This gradient is directly used to affect and correct the estimated color value produced by the prior art interpolation technique. The gradient-corrected linear interpolation method and system may also apply a gradient-correction gain to the gradient correction term. This gradient-correction gain affects the amount of gradient correction that is applied to the interpolation.
摘要翻译：用于彩色图像去马赛克的渐变校正线性插值方法和系统。该方法和系统使用一些当前技术（优选双线性插值技术来减少计算复杂度）来计算插值，计算校正项（例如给定像素处的期望颜色的梯度），并且将内插和校正项，以产生在像素处缺失颜色值的校正的高质量插值。校正项可以是从当前像素的当前颜色计算的梯度校正项。该梯度直接用于影响和校正由现有技术插值技术产生的估计颜色值。梯度校正线性插值方法和系统还可以对梯度校正项应用梯度校正增益。该梯度校正增益影响应用于插值的梯度校正量。

8. 发明申请

US20080209327A1 Persistent spatial collaboration 有权
标题翻译：持续的空间协作
公开(公告)号：US20080209327A1
公开(公告)日：2008-08-28
申请号：US11711314
申请日：2007-02-27
申请人： Steven M. Drucker , Aamer Hydrie , Li-wei He , Rajesh K. Hegde , Zhengyou Zhang
发明人： Steven M. Drucker , Aamer Hydrie , Li-wei He , Rajesh K. Hegde , Zhengyou Zhang
IPC分类号： G06F3/00
CPC分类号： G06F9/542 , G06F2209/544 , G06F2209/546 , G06Q10/10
摘要： Persistent, spatial collaboration on the web supports a free-form, user-intuitive approach to a variety of projects and activities. Users can place differing object types at any time any where on a web page and/or the system can automatically, and with no user effort, affect object placement based on one or more meta data characteristics. A user can, in real-time, see changes made by another user to a web page, and, if desired, react accordingly, enabling true collaboration even if the various users are at remote locations. The flexibility of the methodology and system provides a platform for users to engage in projects and activities in a manner and environment suited to the users' mind sets, creativity, and natural proclivities.
摘要翻译：持续的，在网络上的空间协作支持对各种项目和活动的自由形式，用户直观的方法。用户可以随时在网页和/或系统上自动放置不同的对象类型，并且无需用户努力，就会根据一个或多个元数据特征影响对象放置。用户可以实时地查看另一用户对网页所做的更改，如果需要，还可以进行相应的反应，即使各个用户位于偏远的位置也能实现真正的协作。方法学和系统的灵活性为用户提供了一个适合用户心态，创造力和自然倾向的方式和环境参与项目和活动的平台。

9. 发明授权

US07417983B2 Decentralized architecture and protocol for voice conferencing 有权
标题翻译：语音会议的分散架构和协议
公开(公告)号：US07417983B2
公开(公告)日：2008-08-26
申请号：US11277905
申请日：2006-03-29
申请人： Li-wei He , Dinei A. Florencio , Yong Rui
发明人： Li-wei He , Dinei A. Florencio , Yong Rui
IPC分类号： H04L12/66
CPC分类号： H04L12/1822 , H04L67/104 , H04L67/1061
摘要： A decentralized computer network architecture and method that gathers metadata from local and remote clients and, based on that metadata, locally makes a decision whether to send a packet over the network. Each client listens to what other clients are doing, and only sends when the total number of concurrent speakers is below some threshold. In a multi-party voice conferencing embodiment, the threshold is a number of concurrent speakers that is restricted to less than a certain number. Under the decentralized computer network architecture, the type of network topology used to connect the clients is flexible, as long as each client is running a peer-aware system to decide locally whether to send their packets. The decentralized computer network architecture and method is distributed to run on each client, making it suitable for a wide variety of network topologies (such as full-mesh, bridge-based, or a hybrid of the two).
摘要翻译：从本地和远程客户端收集元数据的分散计算机网络架构和方法，并且基于该元数据在本地做出是否通过网络发送分组的决定。每个客户端监听其他客户端正在执行的操作，只有当并发扬声器的总数低于某个阈值时才发送。在多方语音会议实施例中，阈值是限制在小于一定数量的并发扬声器的数量。在分散式计算机网络架构下，用于连接客户端的网络拓扑的类型是灵活的，只要每个客户端都运行一个对等体感知系统来本地确定是否发送它们的数据包。分布式计算机网络架构和方法分布在每个客户端上运行，使其适用于各种网络拓扑（如全网状，基于桥接或两者混合）。

10. 发明申请

US20080071920A1 Media File Format to Support Switching Between Multiple Timeline-Altered Media Streams 有权
标题翻译：媒体文件格式以支持在多个时间轴改变的媒体流之间切换
公开(公告)号：US20080071920A1
公开(公告)日：2008-03-20
申请号：US11945006
申请日：2007-11-26
申请人： Anoop Gupta , Nosakhare Omoigui , Li-Wei He
发明人： Anoop Gupta , Nosakhare Omoigui , Li-Wei He
IPC分类号： G06F15/16
CPC分类号： H04L65/604 , H04N21/2335 , H04N21/23424 , H04N21/23439 , H04N21/44016 , H04N21/8456 , H04N21/85406 , H04N21/858 , Y10S707/99931
摘要： Media content is streamed from a server computer to a client computer. A media file format is used to store data for multiple timeline-altered streams that provides support for switching between the different timeline-altered streams during their presentation. In one aspect, a user can switch between different timeline-altered streams. Upon receiving a user request to switch to a particular timeline-altered stream (the target stream), the client computer accesses a time code stream data object corresponding to the current data unit being presented. The time code stream data object identifies a primary stream presentation time corresponding to the data unit. The client then uses the primary stream presentation time to index into a table of mappings to byte offsets. The table provides a mapping of the primary stream presentation time to a corresponding byte offset of the target stream.
摘要翻译：媒体内容从服务器计算机流式传输到客户端计算机。媒体文件格式用于存储多个时间轴变化流的数据，这些数据提供支持在不同的时间轴改变的流之间进行切换。在一个方面，用户可以在不同的时间轴变化的流之间切换。在接收到切换到特定时间线改变流（目标流）的用户请求时，客户端计算机访问与正在呈现的当前数据单元相对应的时间码流数据对象。时间码流数据对象标识对应于数据单元的主流呈现时间。然后，客户端使用主流呈现时间将其映射到字节偏移的映射表中。该表提供主流呈现时间与目标流的相应字节偏移的映射。

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