公开(公告)号：US20110128963A1

公开(公告)日：2011-06-02

申请号：US12628080

申请日：2009-11-30

申请人： David Reed ,  Oren Rubinstein ,  Brad Simeral ,  Devang Sachdev ,  Daphane Das ,  Radha Kanekal ,  Dennis Ma ,  Praveen Jain ,  Manas Mandal

发明人： David Reed ,  Oren Rubinstein ,  Brad Simeral ,  Devang Sachdev ,  Daphane Das ,  Radha Kanekal ,  Dennis Ma ,  Praveen Jain ,  Manas Mandal

IPC分类号： H04L12/56

CPC分类号： H04L47/6215 ,  H04L47/527

摘要： A system and method for communicating over a single virtual channel. The method includes reserving a first group of credits of a credit pool for a first traffic class and a second group of credits of the credit pool for a second traffic class. In addition, a first and second respective groups of tags are reserved from a tag pool for the first and second traffic class. A packet may then be selected from a first buffer for transmission over the virtual channel. The packet may include a traffic indicator of the first traffic class operable to allow the packet to pass a packet of the second traffic class from a second buffer. The method further includes sending the packet over the virtual channel and adjusting the first group of credits and the first group of tags based on having sent a packet of the first traffic class.

摘要翻译： 用于通过单个虚拟通道进行通信的系统和方法。 该方法包括为第一业务类别的信用库的第一组信用和用于第二业务类别的信用库的第二组信用保留。 此外，从用于第一和第二业务等级的标签池保留第一和第二相应的标签组。 然后可以从第一缓冲区中选择分组，以在虚拟信道上进行传输。 分组可以包括第一业务类别的业务指示符，其可操作以允许分组从第二缓冲器传递第二业务类别的分组。 该方法还包括基于已经发送了第一业务类别的分组，通过虚拟信道发送分组并调整第一组信用和第一组标签。

公开(公告)号：US07606177B1

公开(公告)日：2009-10-20

申请号：US10657499

申请日：2003-09-08

申请人： Umesh Mahajan ,  Ramana Mellacheruvu ,  Praveen Jain

发明人： Umesh Mahajan ,  Ramana Mellacheruvu ,  Praveen Jain

IPC分类号： H04L12/56

CPC分类号： H04L45/48 ,  H04L12/462 ,  H04L45/02 ,  H04L45/18

摘要： A method and apparatus facilitates and enhances the operation of the spanning tree protocol in bridged computer networks. An intermediate network device in accordance with the present invention includes an enhanced spanning tree engine that is configured to perform certain novel functions. First, the enhanced spanning tree engine is configured to identify and block ports at which messages are looped-back to the transmitting port, thereby avoiding the creation of network loops. In second aspect, the enhanced spanning tree engine rapidly transitions certain ports to a forwarding state to prevent associated applications from timing out and shutting down. Rather than moving the ports through blocking, listening and learning states before reaching the forwarding state, selected ports may be transitioned directly to the forwarding state.

摘要翻译： 一种方法和装置促进并增强了桥接计算机网络中的生成树协议的操作。 根据本发明的中间网络设备包括被配置为执行某些新颖功能的增强型生成树引擎。 首先，增强生成树引擎被配置为识别和阻止消息循环回发送端口的端口，从而避免网络环路的创建。 在第二方面，增强生成树引擎将某些端口快速转换到转发状态，以防止相关联的应用程序超时和关闭。 不是在达到转发状态之前通过阻塞，监听和学习状态移动端口，而是可以将所选择的端口直接转换到转发状态。

公开(公告)号：US07489117B2

公开(公告)日：2009-02-10

申请号：US11261660

申请日：2005-10-31

申请人： Praveen Jain

发明人： Praveen Jain

IPC分类号： G05F1/613 ,  G05F1/00

CPC分类号： H02M3/158

摘要： The invention relates to a dynamic conversion circuit for improving the transient response of a switching DC-DC converter, such as in a voltage regulator module (VRM). The dynamic conversion circuit may be applied to a single phase or multiphase interleaved VRM of either isolated or non-isolated design configurations, and enhances power transfer from the input to the output of the DC-DC converter and tightly regulates the output voltage during harsh load current transients.

摘要翻译： 本发明涉及用于改善诸如电压调节器模块（VRM）中的开关DC-DC转换器的瞬态响应的动态转换电路。 动态转换电路可以应用于隔离或非隔离设计配置的单相或多相交错VRM，并且增强了从输入到DC-DC转换器的输出的功率传输，并且在恶劣的负载期间严格地调节输出电压 电流瞬变。

公开(公告)号：US20080316942A1

公开(公告)日：2008-12-25

申请号：US12202004

申请日：2008-08-29

申请人： Tushar Desai ,  Shashank Gupta ,  Praveen Jain ,  Kalyan K. Ghosh

发明人： Tushar Desai ,  Shashank Gupta ,  Praveen Jain ,  Kalyan K. Ghosh

IPC分类号： H04L12/26

CPC分类号： H04L69/24 ,  H04L41/0816 ,  H04L41/0853 ,  H04L67/1097 ,  H04L69/324 ,  H04L69/329

摘要： Methods and devices are provided for detecting whether peer ports interconnecting two network devices can perform a novel protocol called Exchange Peer Parameters (“EPP”). If the peer ports are so configured to perform EPP, EPP services are exchanged between the peer ports. In a first phase, information is exchanged about peer port configurations of interest. In a second phase, the results of the exchange of information are applied to hardware and/or software of the respective ports, as needed.

摘要翻译： 提供了用于检测互连两个网络设备的对等端口是否可以执行称为交换对等体参数（“EPP”）的新协议的方法和设备。 如果对等端口配置为执行EPP，则在对端之间交换EPP业务。 在第一阶段，交换有关对象端口配置的信息。 在第二阶段，根据需要将信息交换的结果应用于相应端口的硬件和/或软件。

公开(公告)号：US20070096704A1

公开(公告)日：2007-05-03

申请号：US11261661

申请日：2005-10-31

申请人： Praveen Jain ,  Wennan Guo

发明人： Praveen Jain ,  Wennan Guo

IPC分类号： G05F1/00

CPC分类号： H02M3/157 ,  H02M3/1584 ,  H02M3/33515 ,  H02M2003/1566 ,  H02M2003/1586

摘要： A digital controller for a voltage regulator module (VRM) having single phase or multiphase power converters, and an optional dynamic conversion circuit, is disclosed. The digital controller improves the transient response of the VRM during harsh load current transients, and permits a substantial reduction in output capacitance of the VRM. When used with multiphase interleaved power converters, for a given load current requirement, the digital converter permits the number of interleaved phases of the VRM to be minimized. A VRM with the digital controller demonstrates low cost, high power density, high efficiency, and fast transient response.

摘要翻译： 公开了一种用于具有单相或多相功率转换器的电压调节器模块（VRM）的数字控制器和可选的动态转换电路。 数字控制器在恶劣的负载电流瞬变过程中改善了VRM的瞬态响应，并大大降低了VRM的输出电容。 当与多相交错电源转换器一起使用时，对于给定的负载电流要求，数字转换器允许VRM的交错相位数量最小化。 具有数字控制器的VRM具有低成本，高功率密度，高效率和快速瞬态响应。

公开(公告)号：US20070096703A1

公开(公告)日：2007-05-03

申请号：US11261660

申请日：2005-10-31

申请人： Praveen Jain

发明人： Praveen Jain

IPC分类号： G05F1/00

CPC分类号： H02M3/158

摘要： The invention relates to a dynamic conversion circuit for improving the transient response of a switching DC-DC converter, such as in a voltage regulator module (VRM). The dynamic conversion circuit may be applied to a single phase or multiphase interleaved VRM of either isolated or non-isolated design configurations, and enhances power transfer from the input to the output of the DC-DC converter and tightly regulates the output voltage during harsh load current transients.

摘要翻译： 本发明涉及用于改善诸如电压调节器模块（VRM）中的开关DC-DC转换器的瞬态响应的动态转换电路。 动态转换电路可以应用于隔离或非隔离设计配置的单相或多相交错VRM，并且增强了从输入到DC-DC转换器的输出的功率传输，并且在恶劣的负载期间严格地调节输出电压 电流瞬变。

公开(公告)号：US06407985B1

公开(公告)日：2002-06-18

申请号：US09106798

申请日：1998-06-29

申请人： Praveen Jain

发明人： Praveen Jain

IPC分类号： H04J324

CPC分类号： H04L45/24 ,  H04L45/00 ,  H04L45/48 ,  H04L47/122

摘要： In order to load share non-configuration message traffic on more than one port of a non-root spanning tree protocol compliant switching node, upon receiving a spanning tree algorithm port-blocking message, the switching node assigns a port filter to each of its non-designated ports. The switching node then directs a spanning tree non-configuration message through a port that has a port filter which corresponds to the non-configuration message. The switching node may be implemented using any learning switch, or equivalent device, which complies with a spanning tree algorithm, has sufficient memory to store the port filters used, a means for applying the port filters to its non-designated ports, and a means for directing at least one spanning tree non-configuration message to a port having a port filter that corresponds to the non-configuration message. The switching node may be implemented on any spanning tree compliant network, such as a IEEE 802.1d network, as long as the network includes at least one other learning switch which is selected as the root switch for the network.

摘要翻译： 为了在非根生成树协议的交换节点的多个端口上加载共享非配置消息流量，在接收到生成树算法端口阻塞消息时，交换节点将其端口过滤器分配给其每个非 指定端口 交换节点然后通过具有对应于非配置消息的端口过滤器的端口来引导生成树非配置消息。 可以使用符合生成树算法的任何学习开关或等效设备来实现交换节点，其具有足够的存储器来存储使用的端口过滤器，用于将端口过滤器应用于其非指定端口的装置，以及装置 用于将至少一个生成树非配置消息引导到具有与非配置消息对应的端口过滤器的端口。 交换节点可以在诸如IEEE 802.1d网络的任何符合生成树的网络上实现，只要该网络包括被选择为网络的根交换机的至少一个其他学习交换机。

公开(公告)号：US6097614A

公开(公告)日：2000-08-01

申请号：US312306

申请日：1999-05-14

申请人： Praveen Jain ,  Yan-Fei Liu ,  Simmi Mangat

发明人： Praveen Jain ,  Yan-Fei Liu ,  Simmi Mangat

IPC分类号： H02M3/337 ,  H02M3/335

CPC分类号： H02M3/337 ,  Y02B70/1433

摘要： An asymmetrical pulse width modulated resonant DC--DC converter exhibiting improved zero voltage switching characteristics is disclosed. The converter includes a chopper circuit to convert the DC input voltage to a high frequency AC voltage which, in turn, is fed to a high frequency transformer whose secondary AC is rectified and filtered to produce a stable DC output. A compensation network is placed between the input and the chopper circuit which provides zero voltage switching of the converter over a wide input voltage range.

摘要翻译： 公开了一种表现出改进的零电压开关特性的非对称脉宽调制谐振DC-DC转换器。 该转换器包括将DC输入电压转换成高频交流电压的斩波电路，该高频交流电压进而被馈送到二次交流整流和滤波以产生稳定的直流输出的高频变压器。 在输入和斩波电路之间放置补偿网络，该电路在宽输入电压范围内提供转换器的零电压开关。