专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06847614B2 Apparatus and method for unilateral topology discovery in network management 失效
公开(公告)号：US06847614B2
公开(公告)日：2005-01-25
申请号：US09397911
申请日：1999-09-17
申请人： Kim K. Banker , Christopher Alan Del Signore , Gavin Bowlby , Richard Karl Feldman , Farivar Farzaneh , Michael Timothy Kauffman
发明人： Kim K. Banker , Christopher Alan Del Signore , Gavin Bowlby , Richard Karl Feldman , Farivar Farzaneh , Michael Timothy Kauffman
IPC分类号： H04L12/24 , H04L12/56 , H04L25/49 , H04L12/26
CPC分类号： H04L45/02 , H04L25/4908 , H04L41/0213 , H04L41/046 , H04L41/12 , H04L45/04
摘要： A system for reducing the cost of network managment by using a proxy agent and subchannel communications so fewer SNMP licenses and fewer protocol stacks are needed. Subchannel communication is achieved in a plurality of different embodiments. Embodiments having single subchannel transceivers, multiple transceivers, single multiplexer and multiple multiplexers are disclosed. An NMS process using routing table CRC to automatically detect when the NMS topology information is incorrect and automated topology discovery is disclosed. A process for automated discovery of redundant cables during automated topology discovery is disclosed.

2. 发明授权

US07957415B2 Apparatus and method for unilateral topology discovery in network management 有权
标题翻译：网络管理中单向拓扑发现的装置和方法
公开(公告)号：US07957415B2
公开(公告)日：2011-06-07
申请号：US10916597
申请日：2004-08-12
申请人： Kim K. Banker , Christopher Alan Del Signore , Gavin Bowlby , Richard Karl Feldman , Farivar Farzaneh , Michael Timothy Kauffman
发明人： Kim K. Banker , Christopher Alan Del Signore , Gavin Bowlby , Richard Karl Feldman , Farivar Farzaneh , Michael Timothy Kauffman
IPC分类号： H04J3/16
CPC分类号： H04L45/02 , H04L25/4908 , H04L41/0213 , H04L41/046 , H04L41/12 , H04L45/04
摘要： A system for reducing the cost of network management by using a proxy agent and subchannel communications so fewer SNMP licenses and fewer protocol stacks are needed. Subchannel communication is achieved in a plurality of different embodiments. Embodiments having single subchannel transceivers, multiple transceivers, single multiplexer and multiple multiplexers are disclosed. An NMS process using routing table CRC to automatically detect when the NMS topology information is incorrect and automated topology discovery is disclosed. A process for automated discovery of redundant cables during automated topology discovery is disclosed.
摘要翻译：通过使用代理代理和子通道通信来降低网络管理成本的系统，因此需要更少的SNMP许可证和更少的协议栈。在多个不同的实施例中实现子信道通信。公开了具有单个子信道收发机，多个收发器，单个多路复用器和多个多路复用器的实施例。使用路由表CRC自动检测NMS拓扑信息何时不正确并自动拓扑发现的NMS过程。公开了在自动拓扑发现期间自动发现冗余电缆的过程。

3. 发明授权

US06693917B1 Digital subchannel transceiver for transmitting data 失效
标题翻译：用于传输数据的数字子信道收发器
公开(公告)号：US06693917B1
公开(公告)日：2004-02-17
申请号：US09384496
申请日：1999-08-27
申请人： Richard Karl Feldman , Farivar Farzaneh , Michael Timothy Kauffman
发明人： Richard Karl Feldman , Farivar Farzaneh , Michael Timothy Kauffman
IPC分类号： H04J102
CPC分类号： H04L25/4908
摘要： A system for transmitting subchannel data over the same media as high speed data, especially DC balanced high speed data. A digital transmitter receives subchannel data and modulates it onto a subchannel carrier as the host signal in the preferred embodiment using frequency shift keying. The FSK subchannel carrier is added by superposition to the high speed data signal. At the receiver, a low pass filter filters out the subchannel carrier frequency components which are then amplified and subjected to a two-pole anti-aliasing filter to remove the third and fifth harmonics. Analog-to-digital conversion is followed by a digital mix down to remove the subchannel carrier component using a local oscillator at the subchannel carrier frequency. An FIR low pass filter having a triangular time domain response performs anti-aliasing and leaves as an output only frequency components at the positive and negative deviation frequency for Mark and Space. Mark and space detectors then determine the relative magnitude of the signal received at the positive and negative deviation frequencies in the complex phasor domain to determine when Mark and Space frequencies are being received. Because of the ability to have very narrow bandwidths for the passbands of the digital IF filters, the receiver is more sensitive and less susceptible to the need for tuning to accomodate manufacturing variations in the rise times of the high speed data signals.
摘要翻译：用于通过与高速数据，特别是直流平衡高速数据相同的介质上发送子信道数据的系统。数字发射机在使用频移键控的优选实施例中接收子信道数据并将其调制到子信道载波上作为主机信号。通过叠加到高速数据信号来添加FSK子信道载波。在接收机处，低通滤波器滤除子信道载波频率分量，然后将它们放大并经受两极抗混叠滤波器以去除第三和第五谐波。模数转换之后是数字混合，以在子信道载波频率处使用本地振荡器去除子信道载波分量。具有三角形时域响应的FIR低通滤波器执行抗锯齿，并将其作为输出，仅在Mark和Space的正和负偏差频率处输出频率分量。然后，标记和空间检测器确定在复相量域中在正和负偏差频率处接收的信号的相对幅度，以确定何时接收标记和空间频率。由于能够对数字IF滤波器的通带具有非常窄的带宽，所以接收机更灵敏，并且不太需要调谐以适应高速数据信号的上升时间内的制造变化。

4. 发明授权

US07664142B2 Digital subchannel transceiver for transmitting data 有权
标题翻译：用于传输数据的数字子信道收发器
公开(公告)号：US07664142B2
公开(公告)日：2010-02-16
申请号：US10684873
申请日：2003-10-15
申请人： Richard Karl Feldman , Farivar Farzaneh , Michael Timothy Kauffman
发明人： Richard Karl Feldman , Farivar Farzaneh , Michael Timothy Kauffman
IPC分类号： H04J1/02
CPC分类号： H04L25/4908
摘要： A system for transmitting subchannel data over the same media as high speed data, especially DC balanced high speed data. A digital transmitter receives subchannel data and modulates it onto a subchannel carrier as the host signal in the preferred embodiment using frequency shift keying. The FSK subchannel carrier is added by superposition to the high speed data signal. Because of the ability to have very narrow bandwidths for the passbands of digital IF filters, the receiver is more sensitive and less susceptible to the need for tuning to accommodate manufacturing variations in the rise times of the high speed data signals.
摘要翻译：用于通过与高速数据，特别是直流平衡高速数据相同的介质上发送子信道数据的系统。数字发射机在使用频移键控的优选实施例中接收子信道数据并将其调制到子信道载波上作为主机信号。通过叠加到高速数据信号来添加FSK子信道载波。由于能够为数字IF滤波器的通带提供非常窄的带宽，所以接收机更灵敏，不太需要调谐以适应高速数据信号上升时间的制造变化。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式