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1. 发明授权

US07734035B2 Method and apparatus for soft-response echo suppression 有权
标题翻译：用于软响应回波抑制的方法和装置
公开(公告)号：US07734035B2
公开(公告)日：2010-06-08
申请号：US11068199
申请日：2005-02-28
申请人： Eric John Diethorn , Richard Szajdecki
发明人： Eric John Diethorn , Richard Szajdecki
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： Methods and apparatus are provided for reducing echo from a received signal. A suppression gain is applied to an output of an echo canceler that has processed the received signal. The suppression gain includes a region of sloping attenuation about a decision point. The echo canceler optionally estimates an echo path and subtracts then estimate from the received signal. The suppression gain includes a non-zero lower bound, gmin, on a maximum attenuation applied by a suppressor, that is based on operating conditions of the echo canceler. The region of sloping attenuation applies a variable amount of attenuation that depends on the size of an output error ē(n) of the echo canceler relative to the received signal, x(n).
摘要翻译：提供了用于减少接收信号的回波的方法和装置。对已经处理了接收信号的回波消除器的输出施加抑制增益。抑制增益包括关于决策点的倾斜衰减的区域。回波消除器可选择地估计回波路径，然后从接收信号中减去估计值。抑制增益包括基于抑制器施加的最大衰减的非零下界，gmin，其基于回波消除器的操作条件。倾斜衰减的区域应用可变量的衰减，其取决于回波消除器相对于接收信号x（n）的输出误差ē（n）的大小。

2. 发明授权

US06519259B1 Methods and apparatus for improved transmission of voice information in packet-based communication systems 有权
标题翻译：用于改进基于分组的通信系统中语音信息传输的方法和装置
公开(公告)号：US06519259B1
公开(公告)日：2003-02-11
申请号：US09252252
申请日：1999-02-18
申请人： Albert D. Baker , Anthony J. Spagnolo , Richard Szajdecki , Craig P. Wierzbicki
发明人： Albert D. Baker , Anthony J. Spagnolo , Richard Szajdecki , Craig P. Wierzbicki
IPC分类号： H04J316
CPC分类号： H04M7/125 , H04L1/0014 , H04L1/0025 , H04L12/5601 , H04L2012/5636 , H04L2012/5671 , H04L2012/5679 , H04M7/0072
摘要： A packet-based communication system includes a transmitter which configures multiple channels of encoded voice information for transmission through the system to a receiver. In an illustrative embodiment, the transmitter determines a total number of active channels to be coded at each of a number of different available code rates, within a specified bandwidth constraint. The transmitter assigns the code rates to the active channels in accordance with a code rate assignment technique, such that the bandwidth constraint is satisfied for a defined time period, e.g., a voice channel sample period. The code rate assignment technique may be, e.g., a random rate assignment technique, a round robin rate assignment technique, or an oldest talking channel to lowest rate assignment technique. The transmitter generates packets for a given one of the active channels, encoded at a corresponding assigned code rate, such that a time period between consecutive packets generated for that channel is substantially constant for the duration of a voice call associated therewith.
摘要翻译：基于分组的通信系统包括发射机，其配置用于通过系统传输到接收机的编码语音信息的多个信道。在说明性实施例中，发射机在指定的带宽约束内，以多个不同的可用码率中的每一个确定要编码的有效信道的总数。发射机根据码率分配技术将码率分配给活动信道，使得在规定的时间段（例如语音信道采样周期）中满足带宽约束。码率分配技术可以是例如随机速率分配技术，轮询率分配技术或最低速率分配技术的最旧通话信道。发射机产生用于给定一个有效信道的数据包，以对应的分配码率进行编码，使得在与该信道相关联的语音呼叫的持续时间内为该信道生成的连续分组之间的时间段基本上是恒定的。

3. 发明授权

US08165030B2 System and method for monitoring a network communication at multiple network layers 有权
标题翻译：监控多个网络层网络通信的系统和方法
公开(公告)号：US08165030B2
公开(公告)日：2012-04-24
申请号：US12433630
申请日：2009-04-30
申请人： Jean Meloche , Richard Szajdecki
发明人： Jean Meloche , Richard Szajdecki
IPC分类号： G01R31/08
CPC分类号： H04L43/00 , H04L41/0853 , H04L41/5003 , H04L43/18
摘要： A network monitor gets a (layer 7) media path bill of materials for a communication between two communication devices. The network monitor also gets a (layer 7) signaling path bill of materials. The media path bill of materials and the signaling path bill of materials comprise a plurality of items that are involved in the communication (e.g. hardware, software, links). The media path bill of materials and the signaling path bill of materials comprise a communication path bill of materials. The network monitor sends at least one configuration packet to a plurality of network analyzers to monitor packets that contain a status of the communication in relation one or more items in the communication path bill of materials. The status of the communication is output and displayed in relation to the items in the communication path bill of materials.
摘要翻译：网络监视器获得用于两个通信设备之间的通信的（第7层）媒体路径材料清单。网络监视器还获得（第7层）信令路径物料清单。媒体路径物料清单和信令路径物料清单包括涉及通信（例如硬件，软件，链接）的多个项目。媒体路径材料清单和信令路径材料清单包括通信路径材料清单。网络监视器向多个网络分析器发送至少一个配置分组，以监视与通信路径物料清单中的一个或多个项目有关的通信状态的分组。与通信路径物料清单中的项目相关地输出和显示通信状态。

4. 发明授权

US08054171B1 Programming an existing indicator to indicate the cause of a condition 有权
标题翻译：对现有指标进行编程，以指示病情的原因
公开(公告)号：US08054171B1
公开(公告)日：2011-11-08
申请号：US12049355
申请日：2008-03-16
申请人： Christopher Lanzafame , Christopher Moran , Richard Szajdecki
发明人： Christopher Lanzafame , Christopher Moran , Richard Szajdecki
IPC分类号： G08B21/00
CPC分类号： G05B23/027 , G06F11/0739 , G06F11/0772 , G07C5/0816 , G07C2205/02
摘要： A method and apparatus for allowing a troubleshooter to reuse existing indicators, such as displays, LEDs, or specialized indicators, for a purpose other than the indicator's usual purpose. In response to an initial occurrence of a problem, the troubleshooter modifies the indicator's behavior to indicate a later occurrence of a fault or a set of faults, which may be the cause of the problem. Upon the later occurrence of the problem, the indicator is monitored for simultaneous notification of occurrence of the fault. After the problem is triaged, the modified indicator is returned to its original use. The notification from the indicator can be sensory, i.e., auditory, visible, or tactile. The indicator's change in behavior can occur after the fault happens once or an administrable threshold number of times, or intermittently. Alternatively, the change in behavior may become semi-permanent if the fault continues to occur for some administrable number of times.
摘要翻译：一种方法和装置，用于允许故障排除器重用诸如显示器，LED或专用指示器的现有指示器，用于除了指示器的通常目的之外的目的。响应于最初出现的问题，故障排除器修改指示符的行为以指示故障的后期发生或一组故障，这可能是问题的原因。在发生问题后，监视指示器以同时通知故障发生。在问题被分类之后，修改的指示器返回到原来的使用。来自指示器的通知可以是感觉的，即听觉的，可见的或触觉的。该指标的行为变化可能发生在故障发生一次或可管理的阈值次数之后，或间歇性发生。或者，如果某些可管理次数继续发生故障，则行为的变化可能会变为半永久性。

5. 发明授权

US08509114B1 Circuit emulation service over IP with dynamic bandwidth allocation 有权
标题翻译：具有动态带宽分配的IP电路仿真服务
公开(公告)号：US08509114B1
公开(公告)日：2013-08-13
申请号：US12107386
申请日：2008-04-22
申请人： Richard Szajdecki
发明人： Richard Szajdecki
IPC分类号： H04L12/28 , H04J3/22
CPC分类号： H04L65/1026 , H04L49/253 , H04L49/602 , H04L65/1053 , H04L69/08
摘要： Method and apparatus provide in-band dynamic bandwidth management in a circuit-switched emulation service over Internet Protocol.
摘要翻译：方法和装置通过互联网协议在电路交换仿真服务中提供带内动态带宽管理。

6. 发明授权

US09357075B1 Conference call quality via a connection-testing phase 有权
标题翻译：通过连接测试阶段的电话会议质量
公开(公告)号：US09357075B1
公开(公告)日：2016-05-31
申请号：US12133533
申请日：2008-06-05
申请人： Michael Kloberdans , Wing Lo , Richard Szajdecki
发明人： Michael Kloberdans , Wing Lo , Richard Szajdecki
IPC分类号： H04M3/42 , H04M3/56
CPC分类号： H04M3/56 , H04M3/2236 , H04M3/568 , H04M2203/5027
摘要： Before a party is admitted into a conference call, the party's communication connection to the conference bridge is tested for quality. If the quality is acceptable, the party is admitted into the conference. If the quality is not acceptable, an attempt is made to improve the quality. If the attempt fails, the party is given the choice of either hanging up and calling back or being admitted into the conference in a restricted mode that limits the adverse effects of the poor connection on the conference.
摘要翻译：在派对进入电话会议之前，该方与会议桥的通信连接被测试质量。如果质量是可以接受的，那么该方会被录入会议。如果质量不可接受，则尝试提高质量。如果尝试失败，该方可以选择挂断电话或者以限制会议连接不良影响的限制模式进入会议。

7. 发明申请

US20060193464A1 Method and apparatus for soft-response echo suppression 有权
标题翻译：用于软响应回波抑制的方法和装置
公开(公告)号：US20060193464A1
公开(公告)日：2006-08-31
申请号：US11068199
申请日：2005-02-28
申请人： Eric Diethorn , Richard Szajdecki
发明人： Eric Diethorn , Richard Szajdecki
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： Methods and apparatus are provided for reducing echo from a received signal. A suppression gain is applied to an output of an echo canceler that has processed the received signal. The suppression gain includes a region of sloping attenuation about a decision point. The echo canceler optionally estimates an echo path and subtracts then estimate from the received signal. The suppression gain includes a non-zero lower bound, gmin, on a maximum attenuation applied by a suppressor, that is based on operating conditions of the echo canceler. The region of sloping attenuation applies a variable amount of attenuation that depends on the size of an output error {overscore (e)}(n) of the echo canceler relative to the received signal, x(n).
摘要翻译：提供了用于减少接收信号的回波的方法和装置。对已经处理了接收信号的回波消除器的输出施加抑制增益。抑制增益包括关于决策点的倾斜衰减的区域。回波消除器可选择地估计回波路径，然后从接收信号中减去估计值。基于抑制器施加的最大衰减，抑制增益包括基于回波消除器的操作条件的非零下界，g min min。倾斜衰减的区域应用可变量的衰减，其取决于输出误差的大小（相对于接收信号x（n））的回波消除器的超核（e（n））。

8. 发明授权

US07006511B2 Dynamic jitter buffering for voice-over-IP and other packet-based communication systems 有权
标题翻译：用于IP语音和其他基于分组的通信系统的动态抖动缓冲
公开(公告)号：US07006511B2
公开(公告)日：2006-02-28
申请号：US09907120
申请日：2001-07-17
申请人： Christopher Lanzafame , Christopher B. Moran , Richard Szajdecki
发明人： Christopher Lanzafame , Christopher B. Moran , Richard Szajdecki
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L47/283 , H04J3/0632 , H04L29/06027 , H04L47/10 , H04L47/2416 , H04L47/30 , H04L47/32 , H04L49/90 , H04L49/9031 , H04L49/9052 , H04L65/80 , H04L2012/5649 , H04L2012/5667 , H04L2012/5671 , H04L2012/5681 , H04M7/006 , H04Q11/0478
摘要： A variable-size jitter buffer is used to store information associated with a voice signal, facsimile signal or other received signal in a receiver of a packet-based communication system. The receiver determines an appropriate adjustment time for making an adjustment to the size of the buffer based at least in part on a result of a signal detection operation performed on the received signal. For example, in the case of a received voice signal, the determined adjustment time may be a time at which a state machine associated with a speech detector is in a “no speech” state. If the actual buffer size at the determined adjustment time is not within a designated range of a target computed at least in part based on one or more jitter measurements, the buffer size is adjusted at the determined adjustment time, e.g., by an amount representative of the difference between the actual buffer size and the target. The invention provides low-delay and low-complexity jitter buffering particularly well suited for use in an Internet Protocol (IP) receiver of a voice-over-IP system.
摘要翻译：可变大小的抖动缓冲器用于在基于分组的通信系统的接收机中存储与语音信号，传真信号或其他接收信号相关联的信息。接收机至少部分地基于对接收到的信号执行的信号检测操作的结果，确定用于对缓冲器的大小进行调整的适当的调整时间。例如，在接收到的语音信号的情况下，所确定的调整时间可以是与语音检测器相关联的状态机处于“无语音”状态的时间。如果在确定的调整时间的实际缓冲器大小不在至少部分基于一个或多个抖动测量值计算的目标的指定范围内，则缓冲器大小在所确定的调整时间被调整，例如通过代表实际缓冲区大小与目标之间的差异。本发明提供了低延迟和低复杂度的抖动缓冲，特别适合于在IP语音系统的因特网协议（IP）接收机中使用。

9. 发明授权

US06438131B1 Low-overhead service specific convergence layer for voice and telephony over packet-based systems 失效
标题翻译：用于基于分组的系统的语音和电话的低开销业务特定汇聚层
公开(公告)号：US06438131B1
公开(公告)日：2002-08-20
申请号：US09123860
申请日：1998-07-28
申请人： Patrick A. Gerber , Christopher B. Moran , Richard Szajdecki
发明人： Patrick A. Gerber , Christopher B. Moran , Richard Szajdecki
IPC分类号： H04L1256
CPC分类号： H04M7/006 , H04L29/06027 , H04L65/80 , H04L2012/5656 , H04L2012/5671 , H04L2012/6494 , H04M3/40 , H04Q11/0478
摘要： Information is communicated in an Asynchronous Transfer Mode (ATM) or other packet-based communication system using a service specific convergence layer which associates a holdover indicator with each of a number of packets generated in a voice and telephony service layer. The service specific convergence layer may be a Service Specific Convergence Sublayer (SSCS) of an ATM Adaptation Layer (AAL) Type 2 connection, and the holdover indicator may be a holdover bit in a user-to-user-indication (UUI) field of a Common Part Sublayer (CPS) header of the AAL 2 connection. The holdover indicator may specify, for example, whether a speech detector used for providing silence elimination in the transmitted information is in a holdover mode. The indicator can thus be used by a receiver to determine if a period of silence has begun in the transmitted information, so as to facilitate the generation of comfort noise. The holdover indicators can also be used to provide rate control in a CPS transmitter of an AAL 2 device. For example, the transmitter could drop packets having a holdover indicator of a specified value if a maximum bandwidth of a given transmission connection is exceeded.
摘要翻译：信息在异步传输模式（ATM）或其他基于分组的通信系统中使用特定于服务的汇聚层进行通信，所述融合层将保持指示符与语音和电话服务层中生成的多个分组中的每一个相关联。服务特定汇聚层可以是ATM适配层（AAL）类型2连接的服务特定收敛子层（SSCS），并且保留指示符可以是用户到用户指示（UUI）字段中的保留位 AAL 2连接的公共部分子层（CPS）头。保持指示符可以指定例如用于在发送的信息中提供静音消除的语音检测器是否处于保持模式。因此，指示符可以由接收机使用以确定所发送的信息中的静音周期是否已经开始，以便于产生舒适噪声。保持指示器也可用于在AAL 2设备的CPS发射机中提供速率控制。例如，如果超出给定传输连接的最大带宽，则发射机可以丢弃具有指定值的保持指示符的分组。

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