公开(公告)号：US07787605B2

公开(公告)日：2010-08-31

申请号：US11080994

申请日：2005-03-15

Applicant: Jeffrey Rodman

Inventor： Jeffrey Rodman

IPC: H04M3/42

CPC classification number: H04L12/66 ,  H04L12/4625 ,  H04M3/567 ,  H04M7/006 ,  H04M2203/5036 ,  H04Q2213/1309 ,  H04Q2213/13106 ,  H04Q2213/1324

Abstract: Disclosed herein are methods, systems, and devices for improved audio, video, and data conferencing. The present invention provides a conferencing system comprising a plurality of endpoints communicating data including audio data and control data according to a communication protocol. A local conference endpoint may control or be controlled by a remote conference endpoint. Data comprising control signals may be exchanged between the local endpoint and remote endpoint via various communication protocols. In other embodiments, the present invention provides for improved bridge architecture for controlling functions of conference endpoints including controlling functions of the bridge.

Abstract translation: 本文公开了用于改进音频，视频和数据会议的方法，系统和设备。 本发明提供一种会议系统，包括根据通信协议传送包括音频数据和控制数据的数据的多个端点。 本地会议端点可以由远程会议端点控制或控制。 包含控制信号的数据可以通过各种通信协议在本地端点和远程端点之间交换。 在其他实施例中，本发明提供了用于控制会议端点的功能的改进的桥接架构，包括控制桥的功能。

公开(公告)号：US07787328B2

公开(公告)日：2010-08-31

申请号：US11015373

申请日：2004-12-17

Applicant: Peter L. Chu ,  Michael Kenoyer ,  Richard Washington

Inventor： Peter L. Chu ,  Michael Kenoyer ,  Richard Washington

IPC: G01S3/802

CPC classification number: H04R3/005 ,  G01S5/18 ,  H04N7/142 ,  H04R2201/401 ,  H04R2430/23

Abstract: In accordance with the present invention, a system and method for computing a location of an acoustic source is disclosed. The method includes steps of processing a plurality of microphone signals in frequency space to search a plurality of candidate acoustic source locations for a maximum normalized signal energy. The method uses phase-delay look-up tables to efficiently determine phase delays for a given frequency bin number k based upon a candidate source location and a microphone location, thereby reducing system memory requirements. Furthermore, the method compares a maximum signal energy for each frequency bin number k with a threshold energy Et(k) to improve accuracy in locating the acoustic source.

Abstract translation: 根据本发明，公开了一种用于计算声源的位置的系统和方法。 该方法包括在频率空间中处理多个麦克风信号以搜索多个候选声源位置以获得最大归一化信号能量的步骤。 该方法使用相位延迟查找表来有效地确定基于候选源位置和麦克风位置的给定频率仓数k的相位延迟，从而减少系统存储器要求。 此外，该方法将每个频率仓数k的最大信号能量与阈值能量Et（k）进行比较，以提高定位声源的精度。

公开(公告)号：US07782775B2

公开(公告)日：2010-08-24

申请号：US11943912

申请日：2007-11-21

Applicant: Richard Flott ,  Michael Horowitz

Inventor： Richard Flott ,  Michael Horowitz

IPC: H04L12/26

CPC classification number: H04L47/10 ,  H04L47/11 ,  H04L47/2416 ,  H04L47/25 ,  H04L47/28 ,  H04L65/403 ,  H04L65/602 ,  H04L65/608 ,  H04L65/80

Abstract: A system and method for adjusting a video bit rate (VBR) over a network includes reducing the VBR if the network incurs a packet loss (PL) that is greater than a PL threshold increasing the VBR if the PL is less than or equal to the PL threshold over a maximum integer number of time intervals and increasing the maximum integer number of time intervals if the PL is greater than the packet loss threshold at the increased VBR. In addition, the VBR is increased over consecutive time intervals until a maximum video bit rate is restored, if the PL over each consecutive time interval is less than or equal to the packet loss threshold.

Abstract translation: 用于通过网络调整视频比特率（VBR）的系统和方法包括：如果网络出现大于PL阈值的分组丢失（PL），则减少VBR，如果PL小于或等于 PL阈值超过最大整数个时间间隔，并且如果PL大于增加的VBR处的分组丢失阈值，则增加时间间隔的最大整数。 另外，如果每个连续时间间隔上的PL小于或等于分组丢失阈值，则VBR在连续的时间间隔上增加，直到恢复最大视频比特率。

公开(公告)号：US20100194847A1

公开(公告)日：2010-08-05

申请号：US12542450

申请日：2009-08-17

Applicant: Avishay Halavy

Inventor： Avishay Halavy

IPC: H04N7/15

CPC classification number: H04N7/152

Abstract: Disclosed are methods and systems for multipoint videoconferencing. A Media Relay MCU (MRM) receives compressed media (audio, video, and/or data) from a plurality of endpoints participating in a video conferencing session. For a given endpoint, the MRM selects which of other endpoints to display in a CP layout at the given endpoint. The MRM transmits the compressed media from the selected endpoints to the given endpoint to be presented in the CP layout. The MRM does not decode the compressed media.

Abstract translation: 公开了多点视频会议的方法和系统。 媒体中继MCU（MRM）从参与视频会议会话的多个端点接收压缩媒体（音频，视频和/或数据）。 对于给定的端点，MRM选择在给定端点的CP布局中显示哪些其他端点。 MRM将压缩介质从所选择的端点传送到给定的端点，以在CP布局中呈现。 MRM不解码压缩介质。

公开(公告)号：US07769054B2

公开(公告)日：2010-08-03

申请号：US11591646

申请日：2006-11-01

Applicant: Mark A. Hamilton

Inventor： Mark A. Hamilton

IPC: H04J3/06

CPC classification number: H04L1/0079 ,  H04L65/00 ,  H04L65/608 ,  H04W84/12

Abstract: A wireless LAN can be used to support audio communication sessions between wireless communication devices and wired communication devices both configured to operate according to the Internet Protocol. Both the wired and wireless communication devices generate and transmit frames of voice information over the LAN to each other and in the process of generating these frames they place a timestamp in each frame that is used by a receiving communications device to determine when the frame should be played in relationship to all of the other frames of voice information it receives. At times these communication devices can place incorrect timestamp values in the frames of audio information which can affect the quality of the communication experience for a user. I propose to correct any incorrect timestamp values by first recognizing that a timestamp value is incorrect and then rounding the value to the nearest frame boundary.

Abstract translation: 无线LAN可用于支持无线通信设备和有线通信设备之间的音频通信会话，无线通信设备和有线通信设备均被配置为根据互联网协议进行操作。 有线和无线通信设备都通过LAN产生并传送语音信息帧，并且在生成这些帧的过程中，它们在由接收通信设备使用的每个帧中放置时间戳以确定该帧应该是何时 与所接收的所有其他语音信息帧相关联。 有时，这些通信设备可以将不正确的时间戳值放在可影响用户的通信体验质量的音频信息的帧中。 我建议通过首先识别时间戳值不正确，然后将值舍入到最近的帧边界来纠正任何不正确的时间戳值。

公开(公告)号：US20100166200A1

公开(公告)日：2010-07-01

申请号：US12721786

申请日：2010-03-11

Applicant: Kwan Kin Truong ,  James Steven Joiner

Inventor： Kwan Kin Truong ,  James Steven Joiner

IPC: H04B3/20

CPC classification number: H04M9/082

Abstract: A method and apparatus for detecting a singing frequency in a signal processing system using two neural-networks is disclosed. The first one (a hit neural network) monitors the maximum spectral peak FFT bin as it changes with time. The second one (change neural network) monitors the monotonic increasing behavior. The inputs to the neural-networks are the maximum spectral magnitude bin and its rate of change in time. The output is an indication whether howling is likely to occur and the corresponding singing frequency. Once the singing frequency is identified, it can be suppressed using any one of many available techniques such as notch filters. Several improvements of the base method or apparatus are also disclosed, where additional neural networks are used to detect more than one singing frequency.

Abstract translation: 公开了一种使用两个神经网络在信号处理系统中检测唱歌频率的方法和装置。 第一个（击中神经网络）随着时间的推移监视最大频谱峰值FFT仓。 第二个（改变神经网络）监测单调递增行为。 神经网络的输入是最大频谱幅度和其时间变化率。 输出是指啸声是否可能发生和相应的唱歌频率的指示。 一旦确定了唱歌频率，就可以使用诸如陷波滤波器之类的许多可用技术中的任一种来抑制唱歌频率。 还公开了基本方法或装置的几个改进，其中使用附加的神经网络来检测多于一个唱歌频率。

公开(公告)号：US20100103245A1

公开(公告)日：2010-04-29

申请号：US12683806

申请日：2010-01-07

Applicant: Eran Decker ,  Niv Wagner ,  Avihay Barazany ,  Roni Vistuch

Inventor： Eran Decker ,  Niv Wagner ,  Avihay Barazany ,  Roni Vistuch

IPC: H04N7/15

CPC classification number: H04N7/152 ,  H04N5/2628 ,  H04N7/142

Abstract: Dynamically adapting a continuous presence (CP) layout in a videoconference enhances a videoconferencing experience by providing optimum visibility to regions of interest within the CP layout and ignoring regions of no interest. Based on the CP layout, a CP video image can be built, in which a conferee at a receiving endpoint can observe, simultaneously, several other participants' sites in the conference. For example, more screen space within the CP layout is devoted to presenting the participants in the conference and little or no screen space is used to present an empty seat, an empty room, or an unused portion of a room. Aspect ratios of segments of the CP layout (e.g., landscape vs. portrait) can be adjusted to optimally present the regions of interest. The CP layout can be adjusted as regions of interest change depending on the dynamics of the video conference.

Abstract translation: 在视频会议中动态适应连续存在（CP）布局，通过为CP布局中的感兴趣区域提供最佳可见性，并忽略不感兴趣的区域，增强了视频会议体验。 基于CP布局，可以构建CP视频图像，其中接收端点的与会者可以同时观察会议中的其他几个参与者的站点。 例如，CP布局中的更多屏幕空间专用于呈现会议中的参与者，并且很少或不使用屏幕空间来呈现空座位，空房间或房间的未使用部分。 CP布局的段的纵横比（例如，横向与纵向）可以被调整以最佳地呈现感兴趣的区域。 根据视频会议的动态，CP布局可以根据感兴趣的区域进行调整。

公开(公告)号：US07679638B2

公开(公告)日：2010-03-16

申请号：US11045565

申请日：2005-01-27

Applicant: Noam Eshkoli ,  Niv Wagner

Inventor： Noam Eshkoli ,  Niv Wagner

IPC: H04N7/14 ,  H04L2/16

CPC classification number: H04N7/148 ,  H04L65/1093 ,  H04L65/4015 ,  H04L65/403 ,  H04N7/147 ,  H04N7/152

Abstract: An association of videoconferencing services is disclosed that enables two or more videoconferences to be generated with each videoconference running independently from the others and having its own conferees. The association is achieved by having at least one conferee (a traveler) that can “move” or “travel” from one videoconference to another in the association. The one or more travelers belong to the association and not to any particular videoconference. In exemplary embodiments, the traveler can choose between the various associated videoconferences by making a selection to a multipoint control unit (MCU) that controls the associated videoconferences.

Abstract translation: 公开了一种视频会议服务的协会，其使得能够产生两个或更多个视频会议，每个视频会议独立于其他视频会议并且具有其自己的与会者。 该协会通过在关联中具有可以从一个视频会议“移动”或“旅行”至少一个与会者（旅行者）到另一个视频会议来实现。 一个或多个旅行者属于该协会，而不属于任何特定的视频会议。 在示例性实施例中，旅行者可以通过对控制相关联的视频会议的多点控制单元（MCU）进行选择来在各种相关联的视频会议之间进行选择。

公开(公告)号：US20100039495A1

公开(公告)日：2010-02-18

申请号：US12190406

申请日：2008-08-12

Applicant: TANVIR RAHMAN ,  KRISHNA SAI

Inventor： TANVIR RAHMAN ,  KRISHNA SAI

IPC: H04N7/14

CPC classification number: H04N7/15 ,  H04M3/4931 ,  H04M2203/551 ,  H04N7/147

Abstract: A method for efficiently accessing pertinent information retrieved from a videoconferencing system call log. System call logs typically contain a chronological list of raw information pertaining to inbound and outbound videoconferencing calls. The method for efficiently accessing this chronological information is performed using input from the user at an endpoint to correlate and sort for display the information required at the current time. Videoconferencing systems typically are shared use or community type devices and the method of this disclosure allows for more user friendly access to pertinent information. Auto population of a speed dial list or associating a smart tag with the retrieved information is another possible feature to aid the end user. This method will allow a business to more efficiently use a limited number of videoconferencing systems amongst diverse groups of users with diverse calling needs.

Abstract translation: 一种用于有效地访问从视频会议系统呼叫记录检索的相关信息的方法。 系统通话记录通常包含与入站和出站视频会议呼叫有关的原始信息的时间顺序列表。 使用来自用户在端点处的输入来执行用于有效地访问该时间顺序信息的方法，以对显示当前时间所需的信息进行关联和排序。 视频会议系统通常是共享使用或社区类型的设备，并且本公开的方法允许对相关信息的更多的用户友好的访问。 快速拨号列表的自动人口或将智能标签与检索到的信息相关联的另一个可能的功能是帮助最终用户。 这种方法将允许企业在具有不同呼叫需求的不同用户组中更有效地使用有限数量的视频会议系统。

公开(公告)号：US07623156B2

公开(公告)日：2009-11-24

申请号：US10892813

申请日：2004-07-16

Applicant: Alain Nimri ,  Junqing Shao

Inventor： Alain Nimri ,  Junqing Shao

IPC: H04N5/232 ,  H04N7/14

CPC classification number: H04N7/15

Abstract: The system disclosed herein seeks to solve the problem of unnatural, dizzy camera motion when moving a camera between two preset positions, e.g., head and shoulder shots of two videoconference participants. Particularly, the system described herein attempts to mimic the camera movement that a professional camera operator would use in a professional video production. A preferred method of moving the camera between two positions is to first zoom out, away from the first position, pan across to the next position, then zoom in. This gives viewers of the camera content an idea of the spatial relationship between the two camera positions and also avoids the aesthetically undesirable effect of panning through irrelevant visual background at high zoom ratios. Disclosed herein is a technique of producing this desired behavior in the context of an automatically or semi-automatically controlled video camera, such as those used in conjunction with videoconferencing equipment.

Abstract translation: 本文公开的系统旨在解决在两个预设位置（例如两个视频会议参与者的头部和肩部拍摄之间）移动相机时的不自然的，头晕的相机运动的问题。 特别地，本文描述的系统尝试模拟专业摄像机操作者将在专业视频制作中使用的相机移动。 在两个位置之间移动相机的优选方法是首先将它们从第一位置放大到远离下一个位置，然后放大。这给摄像机内容的观看者提供了两个摄像机之间的空间关系的想法 并且还避免了在高变焦比下通过无关的视觉背景平移的美学上不利影响。 本文公开了一种在自动或半自动控制的摄像机（例如与视频会议设备结合使用的摄像机）的上下文中产生该期望行为的技术。