公开(公告)号：US08077194B2

公开(公告)日：2011-12-13

申请号：US12349409

申请日：2009-01-06

Applicant: Michael Kenoyer ,  Peter Chu ,  Richard Washington

Inventor： Michael Kenoyer ,  Peter Chu ,  Richard Washington

IPC: H04N7/14

CPC classification number: H04N7/147 ,  H04N7/142 ,  H04N7/15

Abstract: A system and method for high resolution video conferencing is shown and described. A transmitting station and a receiving station including video cameras or sensors, a plurality of microphones and speakers, video, audio and communication processing engines are disclosed. Video is processed and transferred through the system allowing for multiple video streams to be produced and audio is processed and transferred through the system allowing for sound to be played back with an indication of position in relation to the videoconferencing system.

Abstract translation: 显示和描述了用于高分辨率视频会议的系统和方法。 公开了包括摄像机或传感器的发送站和接收站，多个麦克风和扬声器，视频，音频和通信处理引擎。 通过系统处理和传输视频，允许产生多个视频流，并且通过系统处理和传送音频，允许以与视频会议系统相关的位置的指示来播放声音。

公开(公告)号：US08064527B2

公开(公告)日：2011-11-22

申请号：US11208153

申请日：2005-08-19

Applicant: Yipeng Liu ,  Edmund Thompson

Inventor： Yipeng Liu ,  Edmund Thompson

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

CPC classification number: H04N7/152 ,  H04N19/107 ,  H04N19/176 ,  H04N19/68 ,  H04N19/70 ,  H04N19/89 ,  H04N19/895

Abstract: The error concealment technique disclosed herein relates to the use of existing information by the decoder to conceal bitstream errors regardless of what the encoder does. Examples of existing information include, for example, the previous reference frame, macroblock information for the previous reference frames, etc. Another aspect of the system described herein relates to the steps that the encoder can take to enhance the decoder's ability to recover gracefully from a transmission error. Exemplary steps that can be taken by the encoder include intra walk around and sending GOB headers. Although these encoder techniques can provide greatly enhanced results, they are not strictly necessary to the system described herein.

Abstract translation: 这里公开的错误隐藏技术涉及使用解码器的现有信息来隐藏比特流错误，而不管编码器是什么。 现有信息的示例包括例如先前的参考帧，用于先前参考帧的宏块信息等。本文描述的系统的另一方面涉及编码器可采取的步骤，以增强解码器从平滑地从 传输错误。 可以由编码器采取的示例性步骤包括在步行周围并发送GOB头部。 尽管这些编码器技术可以提供大大增强的结果，但是它们对于本文描述的系统并不是严格必需的。

公开(公告)号：US20110191111A1

公开(公告)日：2011-08-04

申请号：US12696788

申请日：2010-01-29

Applicant: Peter Chu ,  Zhemin Tu

Inventor： Peter Chu ,  Zhemin Tu

IPC: G10L19/00 ,  G06F17/00

CPC classification number: G10L19/005 ,  G10L19/0212

Abstract: In audio processing for an audio or video conference, a terminal receives audio packets having transform coefficients for reconstructing an audio signal that has undergone transform coding. When receiving the packets, the terminal determines whether there are any missing packets and interpolates transform coefficients from the preceding and following good frames. To interpolate the missing coefficients, the terminal weights first coefficients from the preceding good frame with a first weighting, weights second coefficients from the following good frame with a second weighting, and sums these weighted coefficients together for insertion into the missing packets. The weightings can be based on the audio frequency and/or the number of missing packets involved. From this interpolation, the terminal produces an output audio signal by inverse transforming the coefficients.

Abstract translation: 在用于音频或视频会议的音频处理中，终端接收具有变换系数的音频分组，用于重构经过变换编码的音频信号。 当接收到分组时，终端确定是否存在丢失的分组，并且从前一个和后续的良好帧中插入变换系数。 为了内插丢失的系数，终端利用第一加权从前一优良帧中的第一系数加权，用第二加权从下一个良好帧中加权第二系数，并将这些加权系数相加在一起以插入到丢失的分组中。 加权可以基于所涉及的音频和/或丢失数据包的数量。 从该插值中，终端通过对系数进行逆变换来产生输出音频信号。

公开(公告)号：US07978838B2

公开(公告)日：2011-07-12

申请号：US11080993

申请日：2005-03-15

Applicant: Jeffrey Rodman ,  David Drell

Inventor： Jeffrey Rodman ,  David Drell

IPC: H04M3/42 ,  H04L12/16

CPC classification number: H04L12/66 ,  H04L12/1822 ,  H04M3/56 ,  H04M3/567 ,  H04M3/568 ,  H04M7/0057 ,  H04M7/006 ,  H04M11/06 ,  H04M11/066 ,  H04M2203/5036 ,  H04N7/152 ,  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：US20110050842A1

公开(公告)日：2011-03-03

申请号：US12549234

申请日：2009-08-27

Applicant: YOUSSEF SALEH ,  GOPAL PARIPALLY ,  MARCIO MACEDO

Inventor： YOUSSEF SALEH ,  GOPAL PARIPALLY ,  MARCIO MACEDO

IPC: H04N7/15 ,  G06K9/00

CPC classification number: H04N7/15 ,  G09B5/06 ,  H04N7/144

Abstract: A distance learning scenario includes a local classroom having a local videoconferencing device communicating with a remote videoconferencing device at a remote classroom. A first local camera captures images of the local participants, a second local camera captures images of an instructor, and a local display screen displays images of remote participants. At the remote location, a first remote camera captures images of remote participants, a first remote display screen displays images of local participants, and a second remote display screen displays images of the instructor. The local display screen is situated on a side of the local presenter that is substantially opposite to the side on which the first remote display screen is situated relative to the second remote display screen at the remote location to implement video-mirroring. The local and remote display screens display life-size images of the participants and the instructor.

Abstract translation: 远程学习场景包括具有本地视频会议设备的本地教室，其与远程教室上的远程视频会议设备通信。 第一本地摄像机拍摄本地参与者的图像，第二本地摄像机拍摄教师的图像，并且本地显示屏幕显示远程参与者的图像。 在远程位置，第一远程摄像机捕获远程参与者的图像，第一远程显示屏幕显示本地参与者的图像，第二远程显示屏幕显示教师的图像。 本地显示屏位于本地演示者的与第一远程显示屏幕相对的一侧相对于远程位置处的第二远程显示屏幕的一侧实现视频镜像。 本地和远程显示屏幕显示参与者和教练的真实尺寸图像。

公开(公告)号：US07898941B2

公开(公告)日：2011-03-01

申请号：US12196700

申请日：2008-08-22

Applicant: Koby Rosenberg ,  Avishay Halavy

Inventor： Koby Rosenberg ,  Avishay Halavy

IPC: H04L1/00

CPC classification number: G06F11/2005 ,  G06F11/2025 ,  G06F11/2028 ,  G06F11/2038 ,  H04L49/30 ,  H04L49/351 ,  H04L49/355 ,  H04L69/40

Abstract: A bank of processing units is connected to a number of LANs via a bank of MAC controllers. An interconnect switch allows any of the processing units to access any of the MAC controllers. A housekeeping processor periodically detects faults in the connectivity of the processing units to the LANs. When a fault is detected, a redundant processing unit is assigned to be connected to the LAN. If a fault still exists, then a redundant MAC controller is assigned to the redundant processing unit. The MAC address of the previous MAC controller is reassigned to the redundant MAC controller.

Abstract translation: 一组处理单元经由一组MAC控制器连接到多个LAN。 互连开关允许任何处理单元访问任何MAC控制器。 内务处理器周期性地检测处理单元与LAN的连接性中的故障。 当检测到故障时，分配冗余处理单元以连接到LAN。 如果故障仍然存在，则将冗余MAC控制器分配给冗余处理单元。 先前MAC控制器的MAC地址重新分配给冗余MAC控制器。

公开(公告)号：US20110026592A1

公开(公告)日：2011-02-03

申请号：US12906761

申请日：2010-10-18

Applicant: John Sievers

Inventor： John Sievers

IPC: H04N7/32

CPC classification number: H04N19/895 ,  H04N19/129 ,  H04N19/50 ,  H04N19/61 ,  H04N19/65 ,  H04N19/89

Abstract: An apparatus and method for digital video encoding is disclosed. The disclosed system provides for an improved way of correcting divergence of a reference block in a decoder while minimizing the overhead required to update the reference block.

Abstract translation: 公开了一种用于数字视频编码的装置和方法。 所公开的系统提供了一种改进的方式来校正解码器中参考块的发散，同时最小化更新参考块所需的开销。

公开(公告)号：US07742608B2

公开(公告)日：2010-06-22

申请号：US11095045

申请日：2005-03-31

Applicant: Kwan Kin Truong ,  James Steven Joiner

Inventor： Kwan Kin Truong ,  James Steven Joiner

IPC: H04R15/00

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若干改进，其中额外的神经网络用于检测多于一个唱歌频率。

公开(公告)号：US20100070598A1

公开(公告)日：2010-03-18

申请号：US12556768

申请日：2009-09-10

Applicant: Alain Nimri

Inventor： Alain Nimri

IPC: G06F15/16 ,  H04N7/14

CPC classification number: H04L12/1818 ,  G06Q10/107 ,  H04L51/00 ,  H04L65/403 ,  H04N7/14

Abstract: A videoconferencing system includes a first videoconferencing unit coupled to a network and associated with a first e-mail address. The first videoconferencing unit receives a second e-mail address and automatically sends a request e-mail requesting connection information to the second e-mail address. A second videoconferencing unit is coupled to the network and is associated with the second e-mail address. The second videoconferencing unit receives the request e-mail and automatically returns a response e-mail including connection information to the first e-mail address. The first videoconferencing unit receives the response e-mail and automatically obtains the connection information from the response e-mail. Using the connection information, the first videoconferencing unit initiates a videoconference call with the second videoconference unit.

Abstract translation: 视频会议系统包括耦合到网络并与第一电子邮件地址相关联的第一视频会议单元。 第一视频会议单元接收第二电子邮件地址，并自动发送请求电子邮件请求连接信息到第二电子邮件地址。 第二视频会议单元耦合到网络并与第二电子邮件地址相关联。 第二视频会议单元接收请求电子邮件，并自动地将包括连接信息的响应电子邮件返回给第一电子邮件地址。 第一个视频会议单元接收响应电子邮件并自动从响应电子邮件获取连接信息。 使用连接信息，第一视频会议单元发起与第二视频会议单元的视频会议呼叫。

公开(公告)号：US07679640B2

公开(公告)日：2010-03-16

申请号：US11045396

申请日：2005-01-27

Applicant: Noam Eshkoli ,  Niv Wagner

Inventor： Noam Eshkoli ,  Niv Wagner

IPC: H04N7/14 ,  G06F3/00

CPC classification number: H04N7/148 ,  H04L65/1083 ,  H04L65/4015 ,  H04L65/403 ,  H04N7/147 ,  H04N7/152

Abstract: New videoconferencing services and methods for handling the video and audio of one or more sub-conferences running in parallel to a main videoconference are disclosed. In exemplary embodiment, a multipoint control unit (MCU) that controls one or more videoconferences may be requested by a conferee of a videoconference (a main videoconference) to establish a sub-conference according to a requester mode of operation.

Abstract translation: 公开了用于处理与主视频会议并行运行的一个或多个子会议的视频和音频的新的视频会议服务和方法。 在示例性实施例中，控制一个或多个视频会议的多点控制单元（MCU）可以由视频会议（主视频会议）的与会者请求，以根据请求者操作模式建立子会议。