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公开(公告)号：US6130880A
公开(公告)日：2000-10-10
申请号：US044958
申请日：1998-03-20
IPC分类号： H04L12/801 , H04L12/823 , H04L12/851 , H04L29/06 , G01R31/08 , H04J3/16 , H04J3/22
摘要： A method and apparatus are used in a gateway to discard selected frames received with a selected encoded-information-type from a communication link with a larger bandwidth to avoid overflowing an internal delay variance removing queue used for protocol translation to a communication link with a smaller bandwidth. The discarded frames do not decrease the quality of translated information. A visual delay variance removing queue congestion indicator is included to indicate three levels of congestion in the delay variance removing queue for received frames. The method and apparatus are used in a multimedia gateway which is translating audio/video conferencing protocols (e.g., H.320, H.323/LAN H.323/PPP and H.324) received from a communication link with a large bandwidth and sent to a communication link with a smaller bandwidth.
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2.发明授权公开(公告)号：US07453815B1
公开(公告)日：2008-11-18
申请号：US10735982
申请日：2003-12-15
CPC分类号： H04L43/067 , H04L43/06 , H04L43/08
摘要： Gateway routers for real-time networks have the ability to collect delay, loss, and jitter statistics on a per-connection basis. It is possible to use this information not only to monitor the quality of individual voice calls and other real-time connections, but also to evaluate the overall performance of the underlying network. This paper describes a method for monitoring and managing the performance of a real-time data network that supports voice, video and other real-time services. In the described embodiments, the RTCP mechanisms of RTP for sender and receiver reporting be used to relay performance information to one or more network monitoring sites for analysis and interpretation. In addition, gateway routers are organized and managed within a hierarchy that allows the monitoring function to localize it view of network conditions within the hierarchy; and the monitoring of network performance can occur on various time scales.
摘要翻译： 用于实时网络的网关路由器可以在每个连接的基础上收集延迟，丢失和抖动统计信息。 可以使用此信息不仅可以监视单个语音通话和其他实时连接的质量，还可以评估底层网络的整体性能。 本文介绍了一种用于监视和管理支持语音，视频和其他实时业务的实时数据网络性能的方法。 在所描述的实施例中，用于发送者和接收者报告的RTP的RTCP机制用于将性能信息中继到一个或多个网络监控站点用于分析和解释。 此外，网关路由器在层次结构内组织和管理，允许监视功能将其视图中的网络条件定位在层次结构中; 网络性能的监控可以在不同的时间尺度上进行。
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3.发明授权System and method for providing telephone service having private branch exchange features in a voice-over-data network telephony system 失效用于在数据网络话音系统中提供具有专用分支交换特征的电话业务的系统和方法公开(公告)号：US06804224B1
公开(公告)日：2004-10-12
申请号：US09515365
申请日：2000-02-29
IPC分类号： H04L1266
CPC分类号： H04M7/1285 , H04M7/1245
摘要： A system and method for providing telephone service to a user of a telecommunications device using a data network service provider. The data network service provider has a local service host that is accessible by a local access identifier. A caller uses a telecommunications device to dial the local access identifier to connect to the local service host. In response to a prompt, the caller dials a telephone extension that identifies the callee's telecommunications device. The local service host receives the telephone extension and verifies that the callee is a subscriber. The local service host then retrieves the gateway nearest the callee telecommunications device and opens a voice-over-data channel between the callee and caller gateways. The telephone conversation then proceeds between the callee and caller telecommunications devices over a public switched telephone network connection to the caller gateway, the voice-over-data channel and the PSTN connection to the callee telecommunications device.
摘要翻译： 一种用于使用数据网络服务提供商向电信设备的用户提供电话服务的系统和方法。 数据网络服务提供商具有可由本地访问标识符访问的本地服务主机。 呼叫者使用电信设备拨打本地接入标识符来连接本地业务主机。 响应于提示，呼叫者拨打一个电话分机，标识被叫方的电信设备。 本地服务主机接收电话分机，并验证被叫方是否为用户。 本地服务主机然后检索最近被叫电信设备的网关，并在被叫方和呼叫者网关之间打开数据通道。 电话会话然后通过公共交换电话网连接到呼叫者网关，语音数据信道和到被叫电信设备的PSTN连接，在被叫方和呼叫者电信设备之间进行。
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4.发明授权System and method for providing user-configured telephone service in a data network telephony system 有权用于在数据网络电话系统中提供用户配置的电话服务的系统和方法公开(公告)号：US06650901B1
公开(公告)日：2003-11-18
申请号：US09515366
申请日：2000-02-29
IPC分类号： H04Q720
CPC分类号： H04M1/2473 , H04M1/2535 , H04M3/42042 , H04M3/42153 , H04M7/0054 , H04M7/006 , H04M7/1245 , H04M7/128 , H04M2242/04 , H04M2242/30 , H04M2250/02
摘要： A system and method for providing location information and other information about a calling telephone to the caller during a telephone connection in a data network telephony system. Data network telephones may be provisioned and otherwise configured for operation with an extensive database and other user account information. The user's account may include a location identifier that identifies the physical location of the telephone. The location identifier may provide address information, latitude and longitude configuration, directions, or other information. In one embodiment of the present invention, the location information is communicated in a data communications channel between the caller and the callee. In another embodiment of the present invention, the location information is communicated to the caller during call setup. The embodiments of the present invention are useful in providing emergency dispatch services, such as 911 in a data network telephony system.
摘要翻译： 一种用于在数据网络电话系统中的电话连接期间向呼叫者提供关于呼叫电话的位置信息和其他信息的系统和方法。 可以为数据网络电话提供数据网络电话，否则可以配置为具有广泛的数据库和其他用户帐户信息的操作。 用户的帐户可以包括标识电话的物理位置的位置标识符。 位置标识符可以提供地址信息，纬度和经度配置，方向或其他信息。 在本发明的一个实施例中，位置信息在呼叫者和被呼叫者之间的数据通信信道中通信。 在本发明的另一个实施例中，在通话建立期间将位置信息传送给呼叫者。 本发明的实施例可用于在数据网络电话系统中提供诸如911之类的紧急调度服务。
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公开(公告)号：US06487690B1
公开(公告)日：2002-11-26
申请号：US09707567
申请日：2000-11-06
申请人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
发明人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
IPC分类号： H03M1300
CPC分类号： H04L1/008 , H04L1/0057
摘要： A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network such as the Internet. An encoder at the sending end derives p redundancy blocks from each group of a k payload blocks and concatenates the redundancy blocks, respectively, with payload blocks in the next group of k payload blocks. At the receiving end, a decoder may recover up to p missing packets in a group of k packets, provided with the p redundancy blocks carried by the next group of k packets. The invention thereby enables correction from the loss of multiple packets in a row, without significantly increasing the data rate or otherwise delaying transmission.
摘要翻译： 一种用于在诸如因特网的分组交换网络中传输诸如数字化语音，视频或音频的实时媒体信号的计算简单而强大的前向纠错码方案。 发送端的编码器从k个有效载荷块的每组中导出p个冗余块，并将冗余块分别与下一组k个有效载荷块中的有效负载块相连。 在接收端，解码器可以恢复一组k个分组中的p个丢失的分组，该分组具有由下一组k个分组携带的p个冗余块。 因此，本发明能够从一行中的多个分组的丢失中进行校正，而不会显着增加数据速率或以其他方式延迟传输。
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6.发明授权Method and apparatus for real time communication system buffer size and error correction coding selection 有权用于实时通信系统缓冲器大小和纠错编码选择的方法和装置公开(公告)号：US06366959B1
公开(公告)日：2002-04-02
申请号：US09322836
申请日：1999-05-28
IPC分类号： G06F1300
CPC分类号： H04J3/0632 , H04J3/0638 , H04J3/0644 , H04J3/0682 , H04L12/6418 , H04L29/06027 , H04L49/206 , H04L49/25 , H04L49/253 , H04L49/30 , H04L49/557 , H04L65/604 , H04L65/80 , H04L2012/5616 , H04L2012/5647 , H04L2012/5649 , H04L2012/5671 , H04L2012/5674 , H04L2012/5681 , H04L2012/6429 , H04L2012/6472 , H04L2012/6475 , H04L2012/6481 , H04L2012/6483 , H04L2012/6489 , H04Q11/0478
摘要： A method and apparatus for communication system buffer size and error correction coding selection. A method includes the steps of receiving a stream of data packets by a real time receiver that includes a buffer management device, a first plurality of jitter buffers, and a second plurality jitter buffers. The first and second plurality of jitter buffers are evaluated and a first and a second optimal jitter buffer is chosen. The first and the second optimal jitter buffer has an associated conditional optimal performance characteristic. The conditional characteristics are compared and a preferred buffer of the receiver is selected. The apparatus includes a receiving device including a first set of jitter buffers and a second set of jitter buffers with error coding. The first set includes a plurality of buffers and a second plurality of buffers maintained in the second set of buffers. The apparatus also includes a means for comparing the first plurality of buffers and the second plurality of buffers, a means for selecting a first optimal buffer from the first plurality of buffers, and a means for selecting a second optimal buffer from the second plurality of buffers. Either the first or the second selected optimal decoder determines the receiver buffer size and whether forward error correction is utilized.
摘要翻译： 一种用于通信系统缓冲器大小和纠错编码选择的方法和装置。 一种方法包括以下步骤：由包括缓冲器管理装置，第一多个抖动缓冲器和第二多个抖动缓冲器的实时接收器接收数据分组流。 评估第一和第二多个抖动缓冲器，并且选择第一和第二最佳抖动缓冲器。 第一和第二最佳抖动缓冲器具有相关联的条件最优性能特征。 比较条件特征并选择接收机的优选缓冲器。 该装置包括接收装置，其包括第一组抖动缓冲器和具有错误编码的第二组抖动缓冲器。 第一组包括多个缓冲器和第二组缓冲器，第二组缓冲器保持在第二组缓冲器中。 该装置还包括用于比较第一多个缓冲器和第二多个缓冲器的装置，用于从第一多个缓冲器中选择第一最佳缓冲器的装置，以及用于从第二多个缓冲器中选择第二最佳缓冲器的装置 。 第一或第二选择的最佳解码器确定接收器缓冲器大小以及是否利用前向纠错。
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7.发明授权Data and media communication through a lossy channel using signal conversion 失效通过使用信号转换的有损通道进行数据和媒体通信
公开(公告)号：US6151636A
公开(公告)日：2000-11-21
申请号：US18872
申请日：1998-02-05
申请人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
发明人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
CPC分类号： H04L1/004
摘要： A method and apparatus for improving the speed and quality of end-to-end data or real-time media transmissions over an internet is disclosed. A data stream representing a media signal at a given level of compression is processed just before the data stream enters the internet. A less compressed data stream representing the same media signal is generated transmitted through the internet. Due to the lower level of compression, the underlying media signal is less sensitive to packet loss in the internet and, as a result, the media signal that arrives at the receiving end will tend to be more continuous and clear.
摘要翻译： 公开了一种通过互联网提高端到端数据或实时媒体传输的速度和质量的方法和装置。 在数据流进入互联网之前处理表示在给定压缩水平下的媒体信号的数据流。 通过互联网发送表示相同媒体信号的较少压缩的数据流。 由于较低的压缩水平，底层媒体信号对互联网中的分组丢失较不敏感，结果，到达接收端的媒体信号往往会更加连续和清晰。
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8.发明授权System and method for selecting a loudest speaker by comparing average frame gains 失效通过比较平均帧增益来选择最大扬声器的系统和方法
公开(公告)号：US06125343A
公开(公告)日：2000-09-26
申请号：US865399
申请日：1997-05-29
申请人： Guido M. Schuster
发明人： Guido M. Schuster
CPC分类号： G10L21/028
摘要： An improved system for identifying the loudest speech signal in a G.723.1 based audio teleconferencing link is disclosed. The system selects the loudest of several analog audio signals by directly analyzing the encoded G.723.1 bit streams representing those signals, rather than by decoding the encoded speech signal in the G.723.1 bit streams and then re-encoding the signal as a selected output bit stream. The system uses the excitation gain parameters encoded in G.723.1 frames to approximate frame gains for respective bit streams and then estimates a short term speech energy for each bit stream by averaging the approximate frame gains over time. The system then compares the estimated speech energy levels and outputs to each conference participant the signal with the highest estimated speech energy as the next portion of an output signal.
摘要翻译： 公开了一种用于识别基于G.723.1的音频电话会议链路中最响亮的语音信号的改进系统。 系统通过直接分析代表这些信号的编码的G.723.1比特流而不是通过对G.723.1比特流中的编码语音信号进行解码，然后将该信号重新编码为选择的输出，来选择最大的几个模拟音频信号 位流。 该系统使用G.723.1帧中编码的激励增益参数来近似各个比特流的帧增益，然后通过对随时间推移的近似帧增益进行平均来估计每个比特流的短期语音能量。 然后，系统将估计的语音能级和输出与具有最高估计语音能量的信号作为输出信号的下一部分比较。
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9.发明授权System and method for controlling telephone service using a wireless personal information device 有权使用无线个人信息设备来控制电话业务的系统和方法公开(公告)号：US07016675B1
公开(公告)日：2006-03-21
申请号：US09406321
申请日：1999-09-27
IPC分类号： H04Q7/20
CPC分类号： H04M7/003 , H04L65/1053 , H04L65/1096 , H04M3/42161
摘要： A system and method for accessing a data network telephony account using a wireless personal information device (PID). The user may connect over the wireless cellular infrastructure to a telephony control server via a data network for access to the user's telephony account, which indicates the user's telephone number in a telephone number entry. Once the connection is made, the user issues a command to set the telephone number entry in the user's data network telephony account to a specific telephone number. The user may then invoke a contacts application in the wireless PID and select a person to call from the contacts list. The user selects the entry to send a command to initiate a telephone connection between the party selected and the user at the telephone designated by the user at the telephony control server.
摘要翻译： 一种使用无线个人信息设备（PID）访问数据网络电话帐户的系统和方法。 用户可以经由数据网络通过无线蜂窝基础设施连接到电话控制服务器，以访问用户的电话帐户，其指示用户在电话号码条目中的电话号码。 一旦建立连接，用户发出命令，将用户数据网络电话帐户中的电话号码条目设置为特定的电话号码。 然后，用户可以在无线PID中调用联系人应用，并从联系人列表中选择一个人来呼叫。 用户选择该条目发送命令，以在由电话控制服务器上的用户指定的电话处发起选择的一方和用户之间的电话连接。
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10.发明授权System and method for accessing radio programs using a data network telephone in a network based telecommunication system 失效用于在基于网络的电信系统中使用数据网络电话访问无线电节目的系统和方法公开(公告)号：US06914897B1
公开(公告)日：2005-07-05
申请号：US09516269
申请日：2000-02-29
CPC分类号： H04H20/82 , H04M1/2473 , H04M1/2535 , H04M7/122 , H04M2250/02
摘要： A system and method of accessing radio programming from radio stations that communicate radio programming on a data network. The radio programming is accessed as radio or audio signals formatted in radio-over-data packets to a data network telephone. The data network telephone is a telephone that uses voice-over-data communications channels over a data network to make telephone connections with other data network telephones. The data network telephone includes a display, a keypad, a handset and an optional speaker output. The data network telephone advantageously permits simultaneous access to radio programming and communication on a telephone connection. The data network telephone also includes an interface to a portable information device. A radio control application may be used on the portable information device that communicates control information to a radio application on the data network telephone. The PID may be used to set the desired radio station, volume and other settings that may be communicated to the radio application on the data network telephone.
摘要翻译： 一种从在数据网络上传送无线电节目的无线电站接入无线电节目的系统和方法。 将无线电节目作为以无线电数据包格式化成数据网络电话的无线电或音频信号进行访问。 数据网络电话是使用数据网络上的语音数据通信信道与其他数据网络电话进行电话连接的电话。 数据网络电话包括显示器，键盘，手机和可选的扬声器输出。 数据网络电话有利地允许在电话连接上同时访问无线电节目和通信。 数据网络电话还包括到便携式信息设备的接口。 无线电控制应用可以在向数据网络电话上的无线电应用传送控制信息的便携式信息设备上使用。 PID可以用于设置可以传送到数据网络电话上的无线电应用的期望的无线电台，音量和其他设置。
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