公开(公告)号：US08896651B2

公开(公告)日：2014-11-25

申请号：US13282582

申请日：2011-10-27

Applicant: Peter L. Chu ,  Krishna Sai

Inventor： Peter L. Chu ,  Krishna Sai

IPC: H04N7/14

CPC classification number: H04N7/15 ,  H04L12/1827 ,  H04L65/1059 ,  H04L65/1069 ,  H04L65/403 ,  H04M3/002 ,  H04M3/567 ,  H04M2250/62 ,  H04N7/147 ,  H04N7/148

Abstract: A videoconferencing system has a videoconferencing unit that use portable devices as peripherals for the system. The portable devices obtain near-end audio and send the audio to the videoconferencing unit via a wireless connection. In turn, the videoconferencing unit sends the near-end audio from the loudest portable device along with near-end video to the far-end. The portable devices can control the videoconferencing unit and can initially establish the videoconference by connecting with the far-end and then transferring operations to the videoconferencing unit. To deal with acoustic coupling between the unit's loudspeaker and the portable device's microphone, the unit uses an echo canceller that is compensated for differences in the clocks used in the A/D and D/A converters of the loudspeaker and microphone.

Abstract translation: 视频会议系统具有视频会议单元，其使用便携式设备作为系统的外围设备。 便携式设备获得近端音频，并通过无线连接将音频发送到视频会议单元。 反过来，视频会议单元将最接近便携式设备的近端音频和近端视频一起发送到远端。 便携式设备可以控制视频会议单元，并且可以通过与远端连接然后将操作传送到视频会议单元来最初建立视频会议。 为了处理单元的扬声器和便携式设备的麦克风之间的声耦合，该单元使用回波消除器，其补偿扬声器和麦克风的A / D和D / A转换器中使用的时钟的差异。

公开(公告)号：US20140247321A1

公开(公告)日：2014-09-04

申请号：US14279584

申请日：2014-05-16

Applicant: Polycom, Inc.

Inventor： Yaakov Moshe Rosenberg

IPC: H04N7/15 ,  G06F3/01

CPC classification number: H04N7/15 ,  G02B27/22 ,  G06F3/013 ,  H04N13/383 ,  H04N2213/006

Abstract: A system and method for manipulating images in a videoconferencing session provides users with a 3-D-like view of one or more presented sites, without the need for 3-D equipment. A plurality of cameras may record a room at a transmitting endpoint, and the receiving endpoint may select one of the received video streams based upon a point of view of a conferee at the receiving endpoint. The conferee at the receiving endpoint will thus experience a 3-D-like view of the presented site.

Abstract translation: 用于在视频会议会话中操纵图像的系统和方法为用户提供一个或多个呈现的站点的3D样式视图，而不需要3-D设备。 多个相机可以在发送端点处记录房间，并且接收端点可以基于在接收端点处的与会者的观点来选择所接收的视频流中的一个。 因此，接收端点的与会者将会体会到呈现站点的3-D状视图。

公开(公告)号：US08805928B2

公开(公告)日：2014-08-12

申请号：US10144561

申请日：2002-05-10

Applicant: Sergey Potekhin ,  Eran Knaz ,  Moshe Elbaz ,  Eyal Leviav

Inventor： Sergey Potekhin ,  Eran Knaz ,  Moshe Elbaz ,  Eyal Leviav

IPC: G06F15/16 ,  H04L12/66 ,  H04L12/18 ,  H04L12/46 ,  H04L29/06

CPC classification number: H04L12/66 ,  H04L12/1813 ,  H04L12/4625 ,  H04L29/06027 ,  H04L65/4038 ,  H04M3/56 ,  H04M3/563 ,  H04M3/564 ,  H04M2203/2061 ,  H04N7/152

Abstract: The present invention is a system and a method for providing a control unit for a multipoint multimedia/audio conference that enables one or more participants to take part in more than one conference simultaneously. The control unit can operate in audio and/or video sections of an MCU and/or Management and Control System (MCS). The MCS, in an exemplary embodiment of the present invention, controls the participation of at least one participant in more than one conference simultaneously by using a Cross-Conference Database (CCDB). The MCU performs connection changes affecting which participants are associated with one or more conferences based on the information that is stored in the CCDB.

Abstract translation: 本发明是一种用于提供用于多点多媒体/音频会议的控制单元的系统和方法，其使一个或多个参与者同时参与多个会议。 控制单元可以在MCU和/或管理和控制系统（MCS）的音频和/或视频部分中操作。 在本发明的示例性实施例中，MCS通过使用跨会议数据库（CCDB）来同时控制至少一个参与者参与多个会议。 MCU根据存储在CCDB中的信息执行影响哪个参与者与一个或多个会议相关联的连接变化。

公开(公告)号：US08797375B2

公开(公告)日：2014-08-05

申请号：US13617773

申请日：2012-09-14

Applicant: David Jordan Lindbergh

Inventor： David Jordan Lindbergh

IPC: H04N7/14

CPC classification number: H04N7/152

Abstract: Conferencing methods and systems are disclosed wherein tags are associated with conferencing endpoints. The tags provide information enabling a decision-making entity to determine the preferability of one or more processing aspects of the endpoints. In a multipoint conference a tag can allow a decision making entity such as an MCU to determine the most appropriate mode for rendering video or other signals sent from a tagged endpoint. The tag itself can indicate the most appropriate mode or can contain information from which the decision-making entity can determine the most appropriate mode using an algorithm. A tag can be associated with an endpoint manually, for example based on a user's or controller's inputs concerning the endpoint. Alternatively, the tag can be assigned automatically based on automatically sensing one or more conditions at an endpoint or analyzing one or more parameters of a data stream transmitted from the endpoint.

Abstract translation: 公开了会议方法和系统，其中标签与会议端点相关联。 标签提供使决策实体能够确定端点的一个或多个处理方面的优选性的信息。 在多点会议中，标签可以允许诸如MCU的决策实体来确定用于渲染从标记的端点发送的视频或其他信号的最合适的模式。 标签本身可以指示最合适的模式，或者可以包含决策实体可以使用算法确定最合适模式的信息。 标签可以手动与端点相关联，例如基于用户或控制器关于端点的输入。 或者，可以基于自动地感测端点处的一个或多个条件或分析从端点发送的数据流的一个或多个参数来自动分配标签。

公开(公告)号：US20140140542A1

公开(公告)日：2014-05-22

申请号：US13682012

申请日：2012-11-20

Applicant: POLYCOM, INC.

Inventor： Jarrod M. Lumpkin

IPC: H04B3/02

CPC classification number: H04B3/02 ,  H03F3/217

Abstract: Audio transmitter circuitry is disclosed that is configurable into different modes by the user, and can output either a differential or single-ended audio signal on two signal wires. Depending on the mode, the transmitter deals with noise on the signal wires by adjusting the input resistance that such noise sees looking into the transmitter. If the transmitter is configured in a differential mode, the input resistance looking back into the transmitter from the perspective of the noise on both signal wires is relatively high. If the transmitter is configured in a single ended mode, the input resistance of noise looking back from the active signal wire into the transmitter is relatively low, to in effect ground such noise back into the transmitter, without significantly presenting such noise to the receiver.

Abstract translation: 公开了可由用户配置成不同模式的音频发射器电路，并且可以在两条信号线上输出差分或单端音频信号。 根据模式，发射机通过调整这种噪声看到发射机的输入电阻来处理信号线上的噪声。 如果变送器配置为差分模式，则从两个信号线上的噪声的角度看，返回到发射机的输入电阻相对较高。 如果发射机配置为单端模式，则从有源信号线回送到发射机中的噪声的输入电阻相对较低，从而实际上将这种噪声接地回到发射机中，而不会对接收机显着地呈现这种噪声。

公开(公告)号：US08705719B2

公开(公告)日：2014-04-22

申请号：US13310336

申请日：2011-12-02

Applicant: Jeffrey Rodman ,  David Drell

Inventor： Jeffrey Rodman ,  David Drell

IPC: H04M3/42 ,  H04N7/14

CPC classification number: H04M7/0057 ,  H04L12/66 ,  H04M3/56 ,  H04M3/567

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：US08687820B2

公开(公告)日：2014-04-01

申请号：US10881008

申请日：2004-06-30

Applicant: Kwan K. Truong ,  Peter Chu ,  Michael A. Pocino

Inventor： Kwan K. Truong ,  Peter Chu ,  Michael A. Pocino

IPC: H04R3/00 ,  H04M3/42

CPC classification number: H04M3/568 ,  H04M3/56 ,  H04N7/142 ,  H04R3/005 ,  H04R27/00

Abstract: Methods and devices for improving the intelligibility of audio in a teleconferencing unit. Multiple microphones and multiple audio channels are used, in which only the best microphones are selected to represent each audio channel. Multiple microphones signals may be mixed according to microphones' positions in a room to form a single signal to represent one audio channel. The audio signal may be further processed to effectuate other features.

Abstract translation: 用于提高电话会议单元中音频的可懂度的方法和设备。 使用多个麦克风和多个音频通道，其中仅选择最好的麦克风来表示每个音频通道。 可以根据麦克风在房间中的位置混合多个麦克风信号以形成单个信号以表示一个音频通道。 可以进一步处理音频信号以实现其他特征。

公开(公告)号：US08559611B2

公开(公告)日：2013-10-15

申请号：US12099144

申请日：2008-04-07

Applicant: Kiril Ratmanski ,  Richard J. Kos ,  Erwin Goesnar ,  Eric David Elias ,  Venugopal Kalluri

Inventor： Kiril Ratmanski ,  Richard J. Kos ,  Erwin Goesnar ,  Eric David Elias ,  Venugopal Kalluri

IPC: H04M3/42 ,  H04M11/00 ,  H04M1/00 ,  H04L12/16 ,  H04Q11/00 ,  H04N7/14

CPC classification number: H04M3/56

Abstract: A communication system that includes multiple conferencing devices connected in a daisy-chain configuration is communicably connected to far-end conference participants. Multiple conferencing devices provide improved sound quality to the far-end participants by reducing aural artifacts resulting from reverberation and echo. The daisy-chain communication system also reduces the processing and transmission time of the near-end audio signal by processing and transmitting the audio signal in frequency domain. Each conferencing device in the daisy chain performs signal conditioning on its audio signal before transmitting it in the frequency domain to a mixer. The output signal of the mixer is converted back to the time domain before being transmitted to the far-end. The daisy-chain configuration also provides a distributed bridge to external communication devices that can be connected to each conferencing device.

Abstract translation: 包括以菊花链配置连接的多个会议设备的通信系统可通信地连接到远端会议参与者。 多个会议设备通过减少由混响和回声引起的听觉伪像，为远端参与者提供改进的声音质量。 菊花链通信系统还通过在频域中处理和发送音频信号来减少近端音频信号的处理和传输时间。 菊花链中的每个会议设备在将其在频域中发送到混频器之前对其音频信号执行信号调节。 混频器的输出信号在发送到远端之前被转换回到时域。 菊花链配置还为可连接到每个会议设备的外部通信设备提供分布式桥接。

公开(公告)号：US20130250036A1

公开(公告)日：2013-09-26

申请号：US13558739

申请日：2012-07-26

Applicant: Yaakov Moshe Rosenberg

Inventor： Yaakov Moshe Rosenberg

IPC: H04N7/15

CPC classification number: H04N7/152

Abstract: A videoconferencing system for determining alignment information for images captured by two or more cameras is disclosed. The videoconferencing system can include a plurality of endpoints and at least one control unit (CU) such as a multipoint control unit (MCU), for example. An endpoint can include a plurality of cameras and at least one projector. The projector is used to project a pattern at the near end site, which pattern is captured by the plurality of cameras. The image frames produced by the cameras are processed to determine the identity and location coordinates of the images of the projected patterns. The location coordinates can be used as reference points to be used by applications such as telepresence, 3D videoconferencing, and morphing.

Abstract translation: 公开了一种用于确定由两个或多个摄像机捕获的图像的对准信息的视频会议系统。 视频会议系统可以包括多个端点和至少一个诸如多点控制单元（MCU）的控制单元（CU）。 端点可以包括多个相机和至少一个投影仪。 投影机用于投影近端位置的图案，该图案由多个照相机捕获。 处理由相机产生的图像帧以确定投影图案的图像的身份和位置坐标。 位置坐标可以用作应用程序（如远程呈现，3D视频会议和变形）使用的参考点。

公开(公告)号：US08537195B2

公开(公告)日：2013-09-17

申请号：US13024101

申请日：2011-02-09

Applicant: Mark R. Duckworth ,  Gopal Paripally ,  Youssef Saleh ,  Marcio Macedo

Inventor： Mark R. Duckworth ,  Gopal Paripally ,  Youssef Saleh ,  Marcio Macedo

IPC: G06F15/16 ,  G06K9/00 ,  H04N7/15

CPC classification number: H04N7/152 ,  G06F3/147

Abstract: A videoconference multipoint control unit (MCU) automatically generates display layouts for videoconference endpoints. Display layouts are generated based on attributes associated with video streams received from the endpoints and display configuration information of the endpoints. An endpoint can include one or more attributes in each outgoing stream. Attributes can be assigned based on video streams' role, content, camera source, etc. Display layouts can be regenerated if one or more attributes change. A mixer can generate video streams to be displayed at the endpoints based on the display layout.

Abstract translation: 视频会议多点控制单元（MCU）自动生成视频会议端点的显示布局。 显示布局是根据与从端点接收的视频流相关联的属性生成的，并显示端点的配置信息。 端点可以包括每个输出流中的一个或多个属性。 属性可以基于视频流的角色，内容，摄像头源等进行分配。如果一个或多个属性更改，则可以重新生成显示布局。 混合器可以生成基于显示布局在端点处显示的视频流。