公开(公告)号：US20070127463A1

公开(公告)日：2007-06-07

申请号：US11526764

申请日：2006-09-26

申请人： Hakon Dahle

发明人： Hakon Dahle

IPC分类号： H04L12/56

CPC分类号： H04L29/06027 ,  H04L65/1009 ,  H04L65/103 ,  H04L65/104 ,  H04L65/4038 ,  H04N7/152

摘要： A conferencing Gatekeeper configured to be adjusted so as to forward a conferencing media stream to be recorded to an appropriate streaming/archiving server, or alternatively to have streaming and archiving modules incorporated. Further, a method and computer program product for archiving or streaming media data between a plurality of endpoints through said gatekeeper.

摘要翻译： 配置为调整以便将要记录的会议媒体流转发到适当的流媒体/归档服务器的会议网闸，或者替代地并入流媒体和归档模块。 此外，一种用于通过所述网守在多个端点之间归档或流媒体数据的方法和计算机程序产品。

公开(公告)号：USD540762S1

公开(公告)日：2007-04-17

申请号：US29220659

申请日：2005-01-03

申请人： Finn Helge Lunde

设计人： Finn Helge Lunde

公开(公告)号：US07136577B1

公开(公告)日：2006-11-14

申请号：US09606582

申请日：2000-06-29

申请人： Michael A. Falco

发明人： Michael A. Falco

IPC分类号： H04N7/26

CPC分类号： H04N21/6437 ,  H04N9/8042 ,  H04N9/877 ,  H04N21/4307 ,  H04N21/4334

摘要： A transmitter (14) of audio, video, or other real-time information reads the information from a persistent store (22) in which the real-time information has been stored in the Real-time-Transport Protocol (“RTP”) format (FIG. 4). A receiver (18) receives the information from the channel (16) through which the transmitter (14) has transmitted it, and the receiver may store the information in a persistent store (24) in RTP format instead of or in addition to playing it by applying it to an appropriate player (20). Parts of this communications circuit may be tested by a tester unit (26) that also employs RTP-format information from a persistent store (22).

摘要翻译： 音频，视频或其他实时信息的发射机（14）从持久存储器（22）读取信息，其中实时信息已经以实时传输协议（“RTP”）格式存储 （图4）。 接收机（18）从发送器（14）发送的通道（16）接收信息，接收机可以将信息存储在RTP格式的持久存储器（24）中，而不是播放它或除了播放之外 通过将其应用于适当的玩家（20）。 该通信电路的一部分可以由测试器单元（26）测试，测试器单元（26）也使用来自永久存储器（22）的RTP格式信息。

公开(公告)号：US20050174951A1

公开(公告)日：2005-08-11

申请号：US11036762

申请日：2005-01-14

申请人： Thies Schrader ,  Vegard Hammer

发明人： Thies Schrader ,  Vegard Hammer

IPC分类号： G06F15/16 ,  H04L12/16 ,  H04L12/18 ,  H04N7/15

CPC分类号： H04N7/152

摘要： The present invention discloses a method for connecting one or more systems to a user for automatic determination of which system the user may use to participate in a call. A predefined list of video conferencing systems and/or locations for each user is predefined and arranged in a prioritized order. When scheduling a meeting and/or a video conference, the predefined user lists are taken into account when selecting end-points and other resources involved in the meeting/conference. The selection process may be controlled by predefined rules also taking various system availability, network resources and the routes required for connecting the other systems in the conference into account The present invention also introduces presence applications to facilitate scheduling and set up of ad hoc meetings/conferences.

摘要翻译： 本发明公开了一种用于将一个或多个系统连接到用户的方法，用于自动确定用户可以使用哪个系统来参与呼叫。 视频会议系统和/或每个用户的位置的预定义列表被预先定义并以优先顺序排列。 在安排会议和/或视频会议时，在选择会议/会议中涉及的终点和其他资源时，会考虑预定义的用户列表。 选择过程可以通过也考虑到各种系统可用性，网络资源和将会议中的其他系统连接所需的路由的预定义规则来控制。本发明还介绍了存在应用以便于安排和建立特设会议/会议 。

公开(公告)号：US20050169459A1

公开(公告)日：2005-08-04

申请号：US11023586

申请日：2004-12-29

申请人： Trygve Marton ,  Bjorn Winsvold ,  Tore Gravermoen

发明人： Trygve Marton ,  Bjorn Winsvold ,  Tore Gravermoen

IPC分类号： H04B3/20 ,  H04M9/08

CPC分类号： H04M9/082 ,  H04S2420/05

摘要： The present invention relates to an audio communication system and method with improved acoustic characteristics. The present invention utilizes the Haas effect to simulate a sound picture that gives a better subjective impression of stereo sound compared to the objective stereo image. It provides a system and a method for presenting the stereo image in an optimal way for an associated echo canceller without compromising with the subjective perception of stereo.

摘要翻译： 本发明涉及具有改善的声学特性的音频通信系统和方法。 本发明利用哈斯效应来模拟与目标立体图像相比立体声的更好的主观印象的声音图像。 它提供了一种用于以相对于回声消除器的最佳方式呈现立体声图像的系统和方法，而不会影响立体声的主观感知。

公开(公告)号：US20050157866A1

公开(公告)日：2005-07-21

申请号：US11022293

申请日：2004-12-22

申请人： Trygve Marton ,  Ingvar Aarnes ,  Bjorn Winsvold ,  Geir Overby

发明人： Trygve Marton ,  Ingvar Aarnes ,  Bjorn Winsvold ,  Geir Overby

IPC分类号： H04M9/08

CPC分类号： H04M9/082 ,  H04M9/08

摘要： An audio communication system and method with improved acoustic characteristics features a stereo detector that is introduced in the echo canceller of the system. When stereo in far-end audio is detected, converging of the adaptive mono model of the canceller is suspended, and when stereo in far-end audio is not detected, converging of the adaptive stereo model of the canceller is suspended. The system may also be extended with a miscellaneous processing unit configured to attenuate the signal at certain events implying a large stereo echo contribution. A stereo collapsing unit is also introduced on the channels of the far-end audio to remove the stereo image at certain events to further suppress the echo contribution.

摘要翻译： 具有改善的声学特性的音频通信系统和方法具有引入到系统的回波消除器中的立体声检测器。 当检测到远端音频中的立体声时，暂停消除器的自适应单声道模型的收敛，并且当未检测到远端音频中的立体声时，中止自适应立体声模型的收敛。 该系统还可以用配置成在意味着大的立体声回波贡献的某些事件处衰减信号的杂项处理单元来扩展。 在远端音频的声道上还引入了立体声折叠单元，以在某些事件中去除立体声图像，以进一步抑制回波的贡献。

公开(公告)号：US20050144233A1

公开(公告)日：2005-06-30

申请号：US10971030

申请日：2004-10-25

申请人： Snorre Kjesbu ,  Espen Christensen

发明人： Snorre Kjesbu ,  Espen Christensen

IPC分类号： H04N7/14 ,  G06F15/16

CPC分类号： H04N7/147

摘要： The present invention relates to video conferencing and multimedia messaging, and takes advantage of the capabilities of the communication system to which the audio participants are connected, in order to increase the performance of all the participants in a mixed conference. In a preferred embodiment, the audio participants are provided with a MMS device, and a MMS Engine captures periodically, or at certain events, video conference data attached to MMS messages and addressed to the MMS device. In the opposite direction, the MMS device provides multimedia data to the conventional video conference participants by attaching the multimedia data to MMS messages, which are sent to the IP-addressable MMS Engine. The MMS Engine separates the multimedia data and converts it to a format compatible with the video conference. The converted multimedia data is then provided to video conference participants, and treated like any other multimedia stream included in the video conference.

摘要翻译： 本发明涉及视频会议和多媒体消息传送，并且利用音频参与者所连接的通信系统的能力，以增加混合会议中所有与会者的表现。 在优选实施例中，音频参与者被提供有MMS设备，并且MMS引擎周期性地或在某些事件处捕获附加到MMS消息并且寻址到MMS设备的视频会议数据。 在相反的方向，MMS设备通过将多媒体数据附加到发送到IP可寻址MMS引擎的MMS消息来向传统视频会议参与者提供多媒体数据。 MMS引擎分离多媒体数据并将其转换为与视频会议兼容的格式。 然后将转换的多媒体数据提供给视频会议参与者，并且像视频会议中包括的任何其他多媒体流一样被处理。

公开(公告)号：US20050031036A1

公开(公告)日：2005-02-10

申请号：US10880460

申请日：2004-07-01

申请人： Gisle Bjontegaard

发明人： Gisle Bjontegaard

IPC分类号： H04N7/26 ,  H04N7/50 ,  H04N7/12

CPC分类号： H04N19/107 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/48 ,  H04N19/60 ,  H04N19/61

摘要： A video coding apparatus, method, and computer program product for removing transform coding noise especially in flat areas of a frame, which appears as remaining parts of moving objects in a video picture. Transform coding noise is removed by forcing a macroblock to be intra coded instead of inter coded when certain criteria are fulfilled so as to reveal whether the macroblock contain annoying quantization generated noise and to detect if an equalization is necessary.

摘要翻译： 一种视频编码装置，方法和计算机程序产品，用于消除变换编码噪声，特别是在作为视频图像中的运动对象的剩余部分出现的帧的平坦区域中。 通过在满足某些标准的情况下强制宏块进行帧内编码而不是帧间编码来去除变换编码噪声，以便揭示该宏块是否包含令人讨厌的量化产生的噪声并检测是否需要均衡。

公开(公告)号：US20040264575A1

公开(公告)日：2004-12-30

申请号：US10831158

申请日：2004-04-26

申请人： Tandberg Telecom AS

发明人： Gisle Bjontegaard

IPC分类号： H04N007/12

CPC分类号： H04N19/14 ,  H04N19/132 ,  H04N19/176 ,  H04N19/61

摘要： A method detects blocks that are to be indicated as skipped at an earlier stage of the encoding process, than would be the case with other implementations of the ITU H.263 and H.264 standards. The method includes transforming 4null4 blocks in the macro blocks having a skip vector of zero with a binary-transform function. The blocks having values of the four uppermost left binary-transform coefficients less than a predefined threshold, are defined as skipped, thus, minimizing the need for computationally demanding block transformation or quantization.

摘要翻译： 一种方法检测在编码过程的较早阶段被跳过的块，与ITU H.263和H.264标准的其他实施方式相比。 该方法包括利用二进制变换函数来变换具有零跳跃向量的宏块中的4×4块。 将具有小于预定阈值的四个最上面的二进制变换系数的值的块定义为跳过，从而最小化对计算要求高的块变换或量化的需要。

公开(公告)号：US20040218755A1

公开(公告)日：2004-11-04

申请号：US10724043

申请日：2003-12-01

申请人： Tandberg Telecom AS

发明人： Trygve Frederik Marton ,  Ingvar Flaten Aarnes

IPC分类号： H04M009/08

CPC分类号： H04M9/082

摘要： An echo canceller processing echo, noise and near end talk in a narrower, but still intelligible, frequency band for reducing required processing power and complexity. In a preferred embodiment of the present invention, an input audio signal of captured sound in an audio communication system is decimated and then divided into a number of sub bands by an analyze filter. Each sub band is processed as in background audio echo cancelling by subtracting the signal with an echo estimate from a model of the acoustic signal in the respective sub band, except from that the signal is also bypassed, adjusted by a filter and subtracted from the processed signal. The resulting signals are then recombined by a synthesize filter and interpolated to the original sampling rate and bandwidth. Finally, the output from the synthesize filter is added to the input audio signal, which has been delayed and adjusted by a filter. The filters are controlled by a control algorithm detecting the presence of near end sound, far end sound and noise, so that the filters, and consequently the high pass filter of the echo canceller, only pass high frequency (above low pass frequencies) when only near end sound is detected.

摘要翻译： 回波消除器在较窄但仍然可理解的频带中处理回波，噪声和近端通话，以减少所需的处理能力和复杂性。 在本发明的优选实施例中，音频通信系统中的捕获声音的输入音频信号被抽取，然后由分析滤波器分成多个子频带。 通过从相应子带中的声学信号的模型中减去具有回波估计的信号来处理每个子带，除了信号被旁路之外，由滤波器调整并从处理的信号中减去 信号。 然后，所得到的信号由合成滤波器重新组合，并被内插到原始采样速率和带宽。 最后，将合成滤波器的输出添加到输入音频信号中，输入音频信号被滤波器延迟和调整。 滤波器由检测近端声音，远端声音和噪声的存在的控制算法控制，使得滤波器以及因此的回波消除器的高通滤波器仅在仅仅通过高频（高于低通频率）时才通过 检测到近端声音。