Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8179788 | Protection switching method and apparatus for use in ring network A protection switching method and apparatus for use in a ring network are provided. At least two switching request signals are received from a network device neighboring a link in which a failure occurs. A switching operation is performed in response to a first rece... | 05/15/2012 |
| 8116196 | Shared mesh signaling method and apparatus In a mesh network, a network element for providing protection switching in a 1:N shared mesh protection scheme having a first protection path associated with a pair of working paths selected from the N working paths is disclosed. The network element comprising: (a) ... | 02/14/2012 |
| 8050175 | Distributed packet group identification for network testing There is disclosed a method, an apparatus, a computing device, and a storage medium for testing a network. A plurality of packets may be received. A packet group identification number for each packet may be determined by extracting two or more packet group identific... | 11/01/2011 |
| 7944816 | System and method for detecting and isolating a remote loop A system and method are provided for enabling a first network to detect a loop in a second network connected thereto. The first network runs a first instance of a Spanning Tree Protocol and the second network runs either a different instance or no instance. The meth... | 05/17/2011 |
| 7864668 | Communication apparatus and path switching method In a communication apparatus on a network having ring topology and connecting plural communication apparatuses such that adjacent communication apparatuses are connected through plural lines, a first detecting unit detects failure occurring in a line included in a r... | 01/04/2011 |
| 7706258 | System and method for detecting loops in a customer-provider bridge domain A loop detection system and method operable in an Ethernet network having a provider network and a customer network. In one embodiment, a provider edge (PE) entity is operable to generate a test frame with at least one of a destination address (DA) and source addres... | 04/27/2010 |
| 7633858 | Providing embedded protection in a network cross-connect device for SONET networks A system and method for providing embedded UPSR protection for SONET networks is described. The STS channels for working and protection rings of a SONET network are input to a SONET overhead processor. The overhead processor comprises a monitor circuit for each stan... | 12/15/2009 |
| 7532570 | Fault tolerant network traffic management A system and apparatus for transmitting transit data through a network with first and a second rings coupling two or more nodes. In one aspect, when the first ring is intact and the second ring has a fault between two nodes, transit data may be wrapped from a second... | 05/12/2009 |
| 7529182 | Communication device with 1:1 protection A communication method for a network where a plurality of communication devices are interconnected and a plurality of pairs of working channels and backup channels are set in two paths between adjacent communication devices to perform 1:1-protection communications. ... | 05/05/2009 |
| 7518989 | Method and apparatus for recovery from faults in a loop network A method and apparatus for recovery from faults in a loop network (500) is provided. The loop network (500) has a plurality of ports (520, 530, 532, 534) serially connected with means for bypassing the ports (520, 530, 532, 534) from the ... | 04/14/2009 |
| 7515531 | Apparatus and methods for the communication and fault management of data in a multipath data network An apparatus and methods are provided for the communication of a data stream and management of faults in a multipath data network having a protected ring-in-ring network architecture. The data stream is communicated over redundant paths between various nodes located... | 04/07/2009 |
| 7450497 | Shared mesh signaling method and apparatus In a mesh network, a network element for providing protection switching in a 1:N shared mesh protection scheme having a first protection path associated with a pair of working paths selected from the N working paths is disclosed. The network element comprising: (a) ... | 11/11/2008 |
| 7443788 | Method and apparatus for improving performance of a loop network A method and apparatus for improving performance of a loop network, in particular a Fiber Channel Arbitrated Loop. The loop network has two loops and a plurality of dual-ported devices each with one port on each loop. The method includes selectively bypassing redund... | 10/28/2008 |
| 7433302 | Ethernet network implementing redundancy using a single category 5 cable A method for providing redundancy in a daisy chain local area network employing Category 5 cabling for connecting network devices uses the normally unused twisted wire pairs in the single Cat 5 cable connecting adjacent network devices. The method includes forming i... | 10/07/2008 |
| 7421203 | Method for transmitting packet in wireless access network based on wavelength identification code scheme A method for transmitting a packet in a wireless access network based on a wavelength identification code scheme. The method comprises the steps of connecting n number of RNCs (Radio Network Controllers) to one sub-ring where the “n” is a positive integer, and a... | 09/02/2008 |
| 7394758 | Method for supporting SDH/SONET APS on Ethernet An Ethernet MAC APS Control sublayer is provided for supporting SDH/SONET APS standard functionality in Ethernet Networks. In accordance with one embodiment, an Ethernet MAC APS Control sublayer is provided for processing Ethernet MAC APS Control frames. The MAC APS... | 07/01/2008 |
| 7372840 | Filtering of dynamic flows Methods and correspondent nodes to filter IP communications through firewalls in scenarios where dynamic pinholes are created to ensure an appropriate level of security is disclosed. The invention is based on creating a secure and authorized anchor for communication... | 05/13/2008 |
| 7370119 | Scalable MPLS fast reroute switchover with reduced complexity A Fast Reroute implementation suitable for use in a label switched router. Reroute from protected tunnels to backup tunnels may be achieved in constant time irrespective of the numbers of protected forwarding equivalence classes and protected tunnels. ... | 05/06/2008 |
| 7359331 | Alarm transfer method and wide area Ethernet network An alarm transfer method for use in a wide area Ethernet network has the steps of generating a plurality of fixed-length frames from an Ethernet frame sent from a client terminal, generating capsules each comprised of each of the fixed-length frames, a type field fo... | 04/15/2008 |
| 7355978 | Method for implementing an OAM function by exchanging request-reply packets between stations of a RPR network, and corresponding packet frames Described is a method extending the OAM functionality in the RPR networks through a new OAM loopback procedure of request-reply type together with the definition of a new RPR OAM loopback frame. The OAM loopback function allows any RPR station to check the reachabil... | 04/08/2008 |
| 7355965 | Apparatus and method for rapid detection of unidirectional breaks in a network ring Normal 802.3 Ethernet requires a tree topology. If a ring or a loop exists, then packets will be forwarded around the ring indefinitely. If the ring is broken, then there is no possibility of packets being propagated forever. This invention shows how to quickly impo... | 04/08/2008 |
| 7352692 | Resource reservation scheme for path restoration in an optical network A method for reserving resources for restoration of a failed virtual path in a mesh optical network is defined. The method in one embodiment, defines multiple classes of service for the virtual path by allocating certain path performance, path implementation and pat... | 04/01/2008 |
| 7349329 | Network system, data transmitter-receiver and failure location/compensation method A data transmitter-receiver 30 arranged on a ring network to form a node includes a normal-direction data transmit/receive unit 19, a reverse-direction data transmit/receive unit 20, a buffer control unit 13, a controller 14, and c... | 03/25/2008 |
| 7349450 | Multi-stage high speed bit stream demultiplexer chip set having switchable master/slave relationship A bit stream demultiplexer that couples a high-speed bit stream media to a communication Application Specific Integrated Circuit (ASIC). The bit stream multiplexer performs its demultiplexing function staged within at least two integrated circuits. The first Integra... | 03/25/2008 |
| 7342877 | Method and system for providing a loop-free ring topology A method for preventing loops in a ring topology of a computer network is disclosed. The method includes receiving a packet at a node on a shared packet ring and inserting a header containing an ID identifying the node at which the packet was received on the ring as... | 03/11/2008 |
| 7343423 | Enhanced switchover for MPLS fast reroute A Fast Reroute implementation where switchover time to backup tunnels upon failure of a protected network element is independent of a number of entries corresponding to forwarding equivalence classes forwarding over LSPs using that element. During normal operation o... | 03/11/2008 |
| 7339887 | Multipoint protected switching ring Normal 802.3 Ethernet requires a tree topology. If a ring or a loop exists, then packets will be forwarded around the ring indefinitely. If the ring is broken, then there is no possibility of packets being propagated forever. This invention shows how to quickly impo... | 03/04/2008 |
| 7334070 | Multi-channel memory architecture for daisy chained arrangements of nodes with bridging between memory channels Multiple memory channels of a multi-channel memory architecture are effectively bridged together to enable data traffic associated with various nodes in daisy chain arrangement to be communicated over both memory channels. For example, a daisy chain arrangement of n... | 02/19/2008 |
| 7327672 | Signal routing in a node of a 1:N automatic protection switching network Automatic protection switching is implemented by channel devices in a data communication system node. Each channel devices includes input and output ports, a data receive port, a data send port, and a signal routing arrangement controlled by a processor element. The... | 02/05/2008 |
| 7327960 | Receiver transponder for protected networks A receiver transponder to be used in an optical add and drop multiplexer connected in short haul type networks receives light signals from two opposite directions on input fibers (21, 23). The optical input signals are converted to electrical signals by O/E c... | 02/05/2008 |
| 7317681 | Redundancy for dual optical ring concentrator A novel and useful mechanism for optical ring networks providing concentrator redundancy in the event of a failure of a concentrator. The nodes in a network are connected to dual concentrators to form bi-directional dual counter-rotating optical rings. The failure o... | 01/08/2008 |
| 7315903 | Self-configuring server and server network A self-configuring server system is disclosed. In this system, a plurality of nodes are linked together in a primary loop. Each node includes an external communication interface coupled to the loop, a command module for controlling the node and an internal interface... | 01/01/2008 |
| 7311570 | Automatic system for adjusting the trim of a motor boat The present invention is a system for automatically controlling the trim of a boat drive thrust on a boat by controlling the trim motor which adjusts the trim angle of the boat drive thrust by pivoting the boat drive thrust relative to the boat. The system includes ... | 12/25/2007 |
| 7308612 | Fast port failover in a network switch A network switch comprises a plurality of ports that exchange frames of data with one or more network devices. A transfer circuit transfers the frames of the data between the ports. At least one of the ports includes a loopback circuit that sends to the transfer cir... | 12/11/2007 |
| 7301895 | Virtual path restoration scheme using fast dynamic mesh restoration in an optical network A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alterna... | 11/27/2007 |
| 7301953 | Method and system for transporting a secondary communication signal with a primary communication signal The method and system provide for transporting a secondary communication signal from a secondary carrier network with a primary communication signal from a primary carrier network. The method and system load the overhead from the secondary communication signal into ... | 11/27/2007 |
| 7289432 | High speed switching router using APS and method for switching the same In a method of switching a current use communication line between first and second communication lines provided between first and second units, link data is previously held in a first physical interface for the first communication line as the current use communicati... | 10/30/2007 |
| 7283740 | Optical ring network with optical subnets and method An optical network includes a plurality of subnets. The subnets each include a plurality of add/drop nodes coupled to the optical ring and operable to passively add and drop traffic to and from the optical ring. The network further includes a plurality of gateway no... | 10/16/2007 |
| 7283739 | Multiple subnets in an optical ring network and method An optical network includes an optical ring and at least three subnets. Each subnet includes a plurality of add/drop nodes coupled to the optical ring. The add/drop nodes are operable to passively add a first traffic stream in a first direction on the optical ring a... | 10/16/2007 |
| 7277779 | Real-time emergency control in power systems The present invention is concerned with a method for real-time emergency control of power transmission networks, based on a modification of the model predictive control (MPC) approach. Following the detection of a contingency at time tc only one nominal t... | 10/02/2007 |
