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Class 714/717 - Loop or ring configuration


Subclass of Class 714 - Error detection/correction and fault detection/recovery
Definition: Subject matter in which a plurality of transmission stations
No. of patents: 134
Last issue date: 03/10/2009


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NumberTitleIssue Date
7502975Data transmission apparatus and method
A data transmission apparatus comprises an estimation device to estimate a transmission condition of the transmission channel in the transmitter based on at least Jitter information or a packet loss rate obtained from the receiver, and a controller to change at leas...
03/10/2009
7500159Data transmission apparatus and method
A data transmission apparatus comprises an estimation device to estimate a transmission condition of the transmission channel in the transmitter based on at least Jitter information or a packet loss rate obtained from the receiver, and a controller to change at leas...
03/03/2009
7496807Data transmission apparatus and method
A data transmission apparatus comprises an estimation device to estimate a transmission condition of the transmission channel in the transmitter based on at least Jitter information or a packet loss rate obtained from the receiver, and a controller to change at leas...
02/24/2009
7444558Programmable measurement mode for a serial point to point link
A serial point to point link that communicatively couples an integrated circuit (IC) device to another IC device is initialized by transferring a training sequence of symbols over the link. Registers of the IC device are programmed, to set a symbol data pattern and ...
10/28/2008
7437628Data transmission apparatus and method
A data transmission apparatus comprises an estimation device to estimate a transmission condition of the transmission channel in the transmitter based on at least Jitter information or a packet loss rate obtained from the receiver, and a controller to change at leas...
10/14/2008
7404115Self-synchronising bit error analyser and circuit
A self-synchronising data bus analyser comprising a generator LFSR, a receiver LFSR and a comparator wherein the generator LFSR generates a first data set which is transmitted through a data bus to the comparator; and wherein the comparator...
07/22/2008
7398437Method and system for multi-user channel allocation for a multi-channel analyzer
Multiple channels of a multi-channel analyzer are allocated among multiple users such that each user can initiate and retrieve the results of separate diagnostic sessions or strategies. Each analyzer channel includes an input connection port, a trace buffer memory a...
07/08/2008
7398438Method and apparatus for improved routing in connectionless networks
The invention includes a method and apparatus for determining a routing table for use in a network comprising a plurality of type-one nodes and a plurality of type-two nodes where the type-two nodes use respective type-two routing tables having one next-hop node ass...
07/08/2008
7380152Daisy chained multi-device system and operating method
A multi-device system having a daisy chain system bus structure and related method of operation are disclosed. A reference signal having a defined oscillation period is communicated around the daisy chain bus structure. Total signal transmission time around the dais...
05/27/2008
7373577CAN system
Provided is a CAN system that can generate an error signal without requiring hardware for generating an error signal to be connected to a bus. A protocol processing part within a CAN controller incorporates error data into receive data or send data, based on error d...
05/13/2008
7362755Process for implementing a switched full-duplex ethernet type communication network with redundancy
A process for implementing a redundant switched full-duplex Ethernet type communication network including at least two independent elementary networks, each elementary network including at least one source subscriber equipment and at least one destination subscriber...
04/22/2008
7359831Diagnostic context
A diagnostic context can be associated with a request and the diagnostic context can be used for determining whether to do diagnosis functions at predetermined points. ...
04/15/2008
7356028Redundant switched full-duplex Ethernet type communication network
A redundant switched full-duplex Ethernet type communication network including at least two independent elementary networks, each elementary network including at least one source subscriber equipment and at least one destination subscriber equipment, connected to ea...
04/08/2008
7355965Apparatus 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
7352744Switched full-duplex ethernet type communication network and implementation process for this network
A switched full-duplex Ethernet type communication network including at least one source subscriber equipment and at least one destination subscriber equipment connected to each other through at least one physical link through at least one switch and at least one vi...
04/01/2008
7339887Multipoint 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
7324068Chained image display apparatus having mutual examining function
A chained image display apparatus having a mutual examining function where a plurality of image display apparatuses, controlled by a central control unit and connected in series, recognize interruption of power to an image display apparatus and correspondingly notif...
01/29/2008
7321593Fibre channel SERDES with elastic transmitter FIFO
A data transfer system having a method and computer program therefor comprises a buffer adapted to receive parallel data according to a first clock signal, and to transmit the parallel data according to a second clock signal, wherein the buffer comprises a plurality...
01/22/2008
7287201Data transmission apparatus and method
A data transmission apparatus comprises an estimation device to estimate a transmission condition of the transmission channel in the transmitter based on at least Jitter information or a packet loss rate obtained from the receiver, and a controller to change at leas...
10/23/2007
7283485Communication system
A communications system in which a first node is connected to a plurality of second nodes for controlling the operation of the second nodes. The plurality of second nodes is arranged in one or more logical interconnects, the topology of the one or more logical inter...
10/16/2007
7275097System and method for analyzing input/output activity on local attached storage
A system, method and computer program product for analyzing file I/O activity on local attached storage devices within a computer network is provided. In an embodiment, a software agent executes on one or more servers within the network, and monitors the I/O activit...
09/25/2007
7257746System for protection link supervision
In a transmission network utilizing link fault protection between nodes, a working and a standby transmission line are terminated at each node with termination boards. The termination boards are adapted to report faults to a link supervision block. The link supervis...
08/14/2007
7242683Switched full-duplex ethernet type communication network and implementation process for this network
This invention describes a switched full-duplex Ethernet type communication network comprising at least one source subscriber equipment (13) and at least one destination subscriber equipment (14) connected to each other through at least one physical li...
07/10/2007
7237169Cross-monitoring sensor system and method
Cross-monitoring sensor system and method in which a plurality of sensors each having a sensing element, circuitry for processing signals from the sensing element, an output interface for delivering processed signals, and an auxiliary input to which signals from ano...
06/26/2007
7230919Quality-of-service monitor for voice-over-Internet-protocol calls
During voice-over-Internet-protocol calls, data are gathered about packet loss on the path over the IP network. An algorithm (in the preferred embodiment, the Sliding Window Exponential Average Algorithm) is used to evaluate the packet loss. The Sliding Window Expon...
06/12/2007
7225467Active intrusion resistant environment of layered object and compartment keys (airelock)
A high level of security and fault tolerance is provided in a digital network by use of highly secure infrastructure of user transparent signalling for communicating detection of signals at a network node having characteristics of a potential attack to another node ...
05/29/2007
7200108Method and apparatus for recovery from faults in a loop network
A method and apparatus for recovery from faults in a loop network (400) is provided. The loop network (400) has a host means (402), a first loop and a second loop (406, 408), a plurality of ports (410) connected to each of the loop...
04/03/2007
7193973Data transmission apparatus and method
A data transmission apparatus comprises an estimation device to estimate a transmission condition of the transmission channel in the transmitter based on at least Jitter information or a packet loss rate obtained from the receiver, and a controller to change at leas...
03/20/2007
7191371System and method for sequential testing of high speed serial link core
A testing circuit for testing a series of at least three alternating transmitter and receiver links. The testing circuit including a built-in-self-test (BIST.) macro for generating test data and transmitting the test data to a first link of the series of transmitter...
03/13/2007
7154861Method and system for a virtual local area network to span multiple loop free network topology domains
A method and system is provided for a virtual local network to span multiple loop free network topology domains. According to one aspect of the invention, a network contains at least two loop free network topology domains and a virtual local area network spanning at...
12/26/2006
7152188Circuit arrangement for protected data transmission, particularly in ring-shaped bus systems
The present circuit arrangement allows data, which are necessary for building up fault-tolerant structures, to be transmitted on standard ring-shaped bus systems. Its implementation requires a monitoring unit and input and output units which transmit or receive data...
12/19/2006
7139824Method and system for isolating and simulating dropped packets in a computer network
An exemplary embodiment of the present invention is a method and system for isolating dropped packets in a computer network. A request for network analysis that includes a source node and a destination node is received by the invention. A map of the expected path be...
11/21/2006
7139925System and method for dynamic cluster adjustment to node failures in a distributed data system
A distributed system provides for separate management of dynamic cluster membership and distributed data. Nodes of the distributed system may include a state manager and a topology manager. A state manager handles data access from the cluster. A topology manager han...
11/21/2006
7106834Digital subscriber line diagnostic system
A communication device transmits very low frequency signals in order to help diagnose the cause of a communication problem in a DSL communication system. The communication problem may be, for example, the inability of a remote data transceiver unit (DTU-R) to succes...
09/12/2006
7102995Supporting SDH/SONET APS bridge selector functionality for ethernet
An Ethernet Automatic Protection Switching (APS) Bridge Selector is provided for supporting SDH/SONET APS standard functionality in Ethernet Networks. In accordance with one embodiment, an Ethernet APS Bridge Selector is provided for bridge, selector, and switchover...
09/05/2006
7096264Network analyzer having distributed packet replay and triggering
A system is described for monitoring and testing computer networks, such as enterprise networks that tend to have a number of geographically dispersed devices and interconnected sub-networks. The system includes a plurality of distributed agents coupled to a computi...
08/22/2006
7093027Fast connection protection in a virtual local area network based stack environment
A fast protection mechanism capable of maintaining end-to-end and fast local protection on the order of sub 50 ms for both VLAN only based connections and for connections that are based partially on VLAN technology and partially on MPLS technology. The present inven...
08/15/2006
7069362Topology for shared memory computer system
A dual ring topology for multiprocessing computer systems. The dual ring topology interconnects multiple building blocks (nodes) to each other, each node comprising processing elements, memory and IO devices. The topology allows for the dual rings to be temporarily ...
06/27/2006
7058844System and method for rapid fault isolation in a storage area network
A fault region identification system adapted for use in a network, such as a storage area network (SAN), includes logic and/or program modules configured to identify errors that occur in the transmission of command, data and response packets between at least one hos...
06/06/2006
7055068Method for validating operation of a fibre link
A method for validating operation of a fiber link when the fiber link is initialized includes the steps of entering a trial link up state upon receiving a command to initialize the fiber link so that normal commands to other devices within the fiber channel loop are...
05/30/2006
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