Video encoding in a video conference
    71.
    发明授权
    Video encoding in a video conference 有权
    视频会议中的视频编码

    公开(公告)号:US08269816B2

    公开(公告)日:2012-09-18

    申请号:US12702287

    申请日:2010-02-08

    IPC分类号: H04N7/14

    CPC分类号: H04N7/15

    摘要: Some embodiments provide an architecture for establishing multi-participant video conferences. This architecture has a central distributor that receives video images from two or more participants. From the received images, the central distributor generates composite images that the central distributor transmits back to the participants. Each composite image includes a set of sub images, where each sub image belongs to one participant. In some embodiments, the central distributor saves network bandwidth by removing each particular participant's image from the composite image that the central distributor sends to the particular participant. In some embodiments, images received from each participant are arranged in the composite in a non-interleaved manner. For instance, in some embodiments, the composite image includes at most one sub-image for each participant, and no two sub-images are interleaved.

    摘要翻译: 一些实施例提供了用于建立多参与者视频会议的架构。 这种架构有一个中央分配器,可以接收来自两个或更多参与者的视频图像。 从接收到的图像中,中心分配器生成中央分配器传送回参与者的合成图像。 每个合成图像包括一组子图像,其中每个子图像属于一个参与者。 在一些实施例中,中央分配器通过从中央分配器向特定参与者发送的合成图像中移除每个特定参与者的图像来节省网络带宽。 在一些实施例中,从每个参与者接收的图像以非交错方式排列在复合体中。 例如,在一些实施例中,合成图像对于每个参与者至多包括一个子图像,并且没有两个子图像被交织。

    ADAPTING TRANSMISSION TO IMPROVE QOS IN A MOBILE WIRELESS DEVICE
    72.
    发明申请
    ADAPTING TRANSMISSION TO IMPROVE QOS IN A MOBILE WIRELESS DEVICE 有权
    适应传输以改善移动无线设备中的QOS

    公开(公告)号:US20120092991A1

    公开(公告)日:2012-04-19

    申请号:US12906000

    申请日:2010-10-15

    IPC分类号: H04W28/16

    摘要: A method and apparatus for adapting transmission to improve quality of service in a mobile wireless device that includes an application processor and a transceiver. An application service connection is established between the mobile wireless device and a remote device. The transceiver in the mobile wireless device monitors real time properties of a radio frequency access link that transports packets for the application service between the mobile wireless device and a wireless communication network. The transceiver provides local feedback to the application processor of updated values of the monitored real time properties. The application processor adjusts packet data generation and transmission in response to the updated values to manage quality of service for the application service connection. Packet data transmission adjustment includes active management of queues in the transceiver by the application processor, selectively dropping packets based on packet classifications and the local feedback information provided to the application processor.

    摘要翻译: 一种用于调整传输以提高包括应用处理器和收发器的移动无线设备中的服务质量的方法和装置。 在移动无线设备和远程设备之间建立应用服务连接。 移动无线设备中的收发器监视在移动无线设备和无线通信网络之间传输用于应用服务的分组的射频接入链路的实时属性。 收发器向应用处理器提供对所监视的实时属性的更新值的本地反馈。 应用处理器响应于更新的值来调整分组数据生成和传输,以管理应用服务连接的服务质量。 分组数据传输调整包括应用处理器对收发器中的队列的主动管理,基于分组分类选择性地丢弃分组以及提供给应用处理器的本地反馈信息。

    AUDIO PROCESSING IN A MULTI-PARTICIPANT CONFERENCE
    73.
    发明申请
    AUDIO PROCESSING IN A MULTI-PARTICIPANT CONFERENCE 有权
    多方会议中的音频处理

    公开(公告)号:US20120069134A1

    公开(公告)日:2012-03-22

    申请号:US12884129

    申请日:2010-09-16

    IPC分类号: H04N7/14

    CPC分类号: H04M3/561 H04M3/568 H04N7/15

    摘要: A first computing device distributes audio signals to several computing devices of participants in a communication session. In some embodiments, the first computing device serves as a central distributor for receiving audio signals from other computing devices, compositing the audio signals and distributing the composited audio signals to the other computing devices. The first computing device prioritizes the received audio signals based on a set of criteria and selects several highly prioritized audio signals. The first computing device generates composite audio signals using only the selected audio signals. The first computing device sends each computing device the composited audio signal for the device. In some cases, the first computing device sends a selected audio signal to another computing device without mixing the signal with any other audio signal.

    摘要翻译: 第一计算设备将音频信号分配给通信会话中的参与者的多个计算设备。 在一些实施例中,第一计算设备用作中央分配器,用于从其他计算设备接收音频信号,合成音频信号并将合成音频信号分配到其他计算设备。 第一计算设备基于一组标准对接收到的音频信号进行优先级排序,并选择几个高度优先的音频信号。 第一计算设备仅使用所选择的音频信号产生复合音频信号。 第一计算设备向每个计算设备发送用于设备的合成音频信号。 在一些情况下,第一计算设备将选定的音频信号发送到另一个计算设备,而不会将该信号与任何其它音频信号混合。

    NAT Traversal for Media Conferencing
    74.
    发明申请
    NAT Traversal for Media Conferencing 有权
    NAT穿越媒体会议

    公开(公告)号:US20120036192A1

    公开(公告)日:2012-02-09

    申请号:US13277889

    申请日:2011-10-20

    IPC分类号: G06F15/16

    摘要: Methods for establishing a direct peer-to-peer (“P2P”) connection between two computers are disclosed. In particular, the methods are designed to work in cases where one or both of the computers are connected to a private network, such private networks being interconnected via a public network, such as the Internet. The connections between the private network and the public network are facilitated by network address translation (“NAT”).

    摘要翻译: 公开了在两台计算机之间建立直接对等(“P2P”)连接的方法。 特别地,这些方法被设计为在一个或两个计算机连接到专用网络的情况下工作,这样的专用网络通过诸如因特网的公共网络互连。 通过网络地址转换(“NAT”),便于私有网络和公网之间的连接。

    NAT traversal for media conferencing
    75.
    发明授权
    NAT traversal for media conferencing 有权
    用于媒体会议的NAT穿越

    公开(公告)号:US08065418B1

    公开(公告)日:2011-11-22

    申请号:US10769841

    申请日:2004-02-02

    IPC分类号: G06F15/16

    摘要: Methods for establishing a direct peer-to-peer (“P2P”) connection between two computers are disclosed. In particular, the methods are designed to work in cases where one or both of the computers are connected to a private network, such private networks being interconnected via a public network, such as the Internet. The connections between the private network and the public network are facilitated by network address translation (NAT).

    摘要翻译: 公开了在两台计算机之间建立直接对等(“P2P”)连接的方法。 特别地,这些方法被设计为在一个或两个计算机连接到专用网络的情况下工作,这样的专用网络通过诸如因特网的公共网络互连。 通过网络地址转换(NAT)来促进专网和公网之间的连接。

    FLOW CONTROL
    77.
    发明申请
    FLOW CONTROL 审中-公开
    流量控制

    公开(公告)号:US20110181686A1

    公开(公告)日:2011-07-28

    申请号:US12950648

    申请日:2010-11-19

    IPC分类号: H04N7/15

    摘要: A method, apparatus, system, and signal-bearing medium that in an embodiment determine at least one capability of a transfer of data, set at least one parameter that affects performance of the transfer to an initial state based on the capability, detect performance of the transfer, and modify the parameter based on the performance. In this way, the data transfer can adapt to changing capabilities of the network and the devices that send and receive the data.

    摘要翻译: 一种方法,装置,系统和信号承载介质,其在一个实施例中确定数据传送的至少一个能力,基于能力将影响性能的至少一个参数设置为初始状态,检测性能 传输,并根据性能修改参数。 以这种方式,数据传输可以适应网络和发送和接收数据的设备的变化能力。

    Multi-participant conference setup
    78.
    发明授权
    Multi-participant conference setup 有权
    多参与者会议设置

    公开(公告)号:US07899170B2

    公开(公告)日:2011-03-01

    申请号:US11118931

    申请日:2005-04-28

    IPC分类号: H04M3/42 H04L12/16 G06F15/16

    摘要: Some embodiments provide an architecture for establishing a multi-participant conference. This architecture has one participant's computer in the conference act as a central content distributor for the conference. The central distributor receives data (e.g., video and/or audio streams) from the computer of each other participant, and distributes the received data to the computers of all participants. In some embodiments, the central distributor receives A/V data from the computers of the other participants. From such received data, the central distributor of some embodiments generates composite data (e.g., composite image data and/or composite audio data) that the central distributor distributes back to the participants.

    摘要翻译: 一些实施例提供了用于建立多参与者会议的架构。 该架构在会议中有一名与会者的电脑作为会议的中央内容分发商。 中央分配器从每个其他参与者的计算机接收数据(例如,视频和/或音频流),并将所接收的数据分发给所有参与者的计算机。 在一些实施例中,中央分配器从其他参与者的计算机接收A / V数据。 从这样接收的数据,一些实施例的中央分配器生成中央分配器分发回参与者的复合数据(例如,合成图像数据和/或复合音频数据)。

    Audio processing in a multi-participant conference
    79.
    发明授权
    Audio processing in a multi-participant conference 有权
    多参与者会议中的音频处理

    公开(公告)号:US07864209B2

    公开(公告)日:2011-01-04

    申请号:US11118555

    申请日:2005-04-28

    IPC分类号: H04N7/15

    CPC分类号: H04N7/15

    摘要: Some embodiments provide an architecture for establishing multi-participant audio conferences over a computer network. This architecture has a central distributor that receives audio signals from one or more participants. The central distributor mixes the received signals and transmits them back to participants. In some embodiments, the central distributor eliminates echo by removing each participant's audio signal from the mixed signal that the central distributor sends to the particular participant.

    摘要翻译: 一些实施例提供了一种用于在计算机网络上建立多参与者音频会议的架构。 该架构具有从一个或多个参与者接收音频信号的中央分配器。 中央分配器将收到的信号混合并传送回参与者。 在一些实施例中,中央分配器通过从中央分配器向特定参与者发送的混合信号中移除每个参与者的音频信号来消除回声。

    Automatic Detection of Channel Bandwidth
    80.
    发明申请
    Automatic Detection of Channel Bandwidth 有权
    信道带宽自动检测

    公开(公告)号:US20100080142A1

    公开(公告)日:2010-04-01

    申请号:US12635759

    申请日:2009-12-11

    IPC分类号: H04L12/26

    摘要: A step-wise approach to automatically determining the bandwidth of a communication channel includes dividing the channel's potential bandwidth into a number of ranges. An initial range is then selected and a series of data packets specific to the selected range are transmitted from a first endpoint to a second endpoint, with the second endpoint determining one or more channel metrics based on the transmitted packets (e.g., measured transmission rates). If the metrics indicate the current range accurately reflects the channel's bandwidth, a measured transmission rate of the transmitted data packets is used as the channel's bandwidth. Otherwise, another range is selected and the process is repeated. The described approach rapidly determines channel bandwidth, even when the channel between the two endpoints is asymmetric. Techniques described herein are particularly beneficial when used in conjunction with multimedia conferencing applications.

    摘要翻译: 自动确定通信信道带宽的逐步方法包括将信道的潜在带宽划分成多个范围。 然后选择初始范围,并且将特定于所选范围的一系列数据分组从第一端点传送到第二端点,其中第二端点基于所发送的分组(例如,测量的传输速率)来确定一个或多个信道量度, 。 如果度量指示当前范围准确地反映信道的带宽,则将所传输的数据分组的测量传输速率用作信道的带宽。 否则,选择另一个范围,并重复该过程。 所描述的方法快速地确定信道带宽,即使当两个端点之间的信道是不对称的时。 当与多媒体会议应用结合使用时,本文描述的技术是特别有益的。