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| Number | Title | Issue Date |
| 7995487 | Intelligent router for wireless sensor network Routing packets in a wireless security system. The system includes a network hub that wirelessly sends and receives packets, at least one sensor that wirelessly sends and receives packets to and from the network hub, and a packet router that monitors the packet comm... | 08/09/2011 |
| 7903567 | Method of testing the availability of a connection to a home authentication server prior to associating with a WLAN access point A method of determining availability of a connection between a wireless local area network and a home network of a mobile user device prior to initiating connection or authentication comprises selecting a network device; and sending a probe signaling message compris... | 03/08/2011 |
| 7602727 | Method and apparatus for resolving deadlock of auto-negotiation sequence between switches A transmission repeater has a function of recovery to normal out of the deadlock state of auto-negotiation sequence between switches. The switches exchange auto-negotiation configuration codes via first and second transmission repeaters for a state transition. The f... | 10/13/2009 |
| 7450519 | Auto-negotiation monitor system, repeating-transmission apparatus, and auto-negotiation monitor method used therefor Where each of switches opposed to each other detects optical-signal shutoff or optical-signal deterioration on the reception side of its port, the switch brings a link of the port down and outputs an auto-negotiation configuration code, as an LAN signal. Upon receiv... | 11/11/2008 |
| 7385929 | Method and system for detecting false packets in wireless communications systems Specific bits of an incoming transmission are compared against a predetermined bit pattern. If the selected bits do not match the predetermined bit pattern, then the incoming transmission is rejected as a false packet. The predetermined bit pattern can include legal... | 06/10/2008 |
| 7376079 | Backup cell controller A wireless local area network for data communications between a computer and mobile units is provided with at least two cell controllers connected to the computer and one or more rf ports each connected to a primary interface of one cell controller and to a backup i... | 05/20/2008 |
| 7366964 | Method, system, and apparatus for loopback entry and exit A loopback test to test a communication link for a layered interface where in a master agent programs the electrical parameters for the slave agent, such as, the offset, timing, and current compensation with a loopback control register. The slave and master agent to... | 04/29/2008 |
| 7327689 | Data processing equipment with multi-function trace message processor A data processing equipment having an input to receive an input stream of data frames. The data frames contain a repeating trace message, each instance of the trace message being divided in fragments distributed over a series of data frames. The data processing equi... | 02/05/2008 |
| 7310748 | Memory hub tester interface and method for use thereof A memory hub including a memory test bridge circuit for testing memory devices. Test command packets are coupled from a tester to the memory hub responsive to a test clock signal having a test clock frequency. The test bridge circuit generates memory device command,... | 12/18/2007 |
| 7286472 | Transmission efficiency determination To determine the transmission efficiency of a data communication network in order to raise the data throughput, the transmission-time, that means the time actually used for user data transmission, is determined. By building the ratio of the transmission-time and the... | 10/23/2007 |
| 7286843 | Identifying remote radio units in a communication system A method for identifying a remote radio unit in a communication system comprises a plurality of remote radio units communicating with a central unit and pattern providing means for providing information about dedicated gain change patterns of the remote radio units.... | 10/23/2007 |
| 7278060 | System and method for on-board diagnostics of memory modules A memory hub includes an on-board diagnostic engine through which diagnostic testing and evaluation of the memory system can be performed. The memory hub includes a link interface for receiving memory requests for access to memory devices of the memory system and a ... | 10/02/2007 |
| 7231003 | System and method for aligning data between local and remote sources thereof The communication system includes two communication channels for communication of protection and control information between two protective relays on a power line portion of an electric power system. A switch provided at the receiving relay connects one communicatio... | 06/12/2007 |
| 7212496 | Remote test unit A remote test unit (RTU) and method of operation are provided for utilizes the ability of an access matrix ability to route signals. The RTU can emulate a central Digital Subscriber Line Modem (DSLM-C) for testing customer premises equipment containing a remote Digi... | 05/01/2007 |
| 7174128 | Radio communication system and radio communication method In a service area of base station 101 is provided at least one relay station 102 that executes processing for non real time data repeat request from communication terminal 103 as a substitute for base station 101, thereby removing the pro... | 02/06/2007 |
| 7154856 | Multiplexing apparatus and cell discard method A multiplexing apparatus selectively performs cell discard processing in the case of congestion on the basis of a use state of the same connection formed by cells from the side of a switching unit and subscribers without installing UPC units, and the multiplexing ap... | 12/26/2006 |
| 7076694 | Method and device for establishing the network topology of a bus system To determine the network topology of a bus system having a number of bus users positioned on bus segments of a bus line interconnected by at least one diagnosis repeater, an initiating measuring telegram is first sent to each bus user. This telegram is answered by t... | 07/11/2006 |
| 7061872 | Managed HDSL repeater A repeater for HDSL transmission is presented. The repeater replaces the regenerator commonly used in HDSL by utilizing the activation/deactivation process in the HDSL specification. The repeater is adjusted to detect an activation/deactivation sequence, whereby a f... | 06/13/2006 |
| 7062235 | Testing of a radio transceiver The objective of this invention is to provide a test procedure that enables testing of not only the transceiver but also of the cable connecting the transmitters and receivers to the duplex filter and the duplex filter itself. The invention is based on the idea of u... | 06/13/2006 |
| 7058420 | Power automation system using trunked radio system network and control method thereof Disclosed are a power automation system using a TRS network and a control method thereof which can reduce the power failure time and power failure areas when an obstacle is raised by providing a pure radio transmission path using a TRS network, in which base transce... | 06/06/2006 |
| 7050401 | Monitoring system and method implementing test result display logic A channel plan with a corresponding test plan are implemented in connection with a plurality of nodes that communicate signals. The channel plan has one or more predefined specifications for each of one or more signal channels on each of the nodes. The channel plan ... | 05/23/2006 |
| 7034545 | Apparatus and method for monitoring transmission systems using off-frequency signals A monitoring system for an transmission line, such as a multi-channel television broadcasting antenna feed line, gathers data about the physical and electrical condition of the line in real time. The system can detect and localize deterioration and other time-depend... | 04/25/2006 |
| 7035208 | Reverse statistical multiplexing to achieve efficient digital packing with link protection An asynchronous transfer mode network, in accordance with the present invention, includes a plurality of remote terminals remotely disposed relative to a central office. The remote terminals are connected by a ring with two paths. The ring transfers signals thereon ... | 04/25/2006 |
| 7010782 | Interactive automatic-test GUI for testing devices and equipment using shell-level, CLI, and SNMP commands A test manager software program includes an interactive test graphical-user-interface (GUI) for testing network devices using high-level networking commands. The test GUI allows the test engineer user to enter high-level commands such as Simple Networking Management... | 03/07/2006 |
| 6992977 | Transmission apparatus and a method for transmitting data in a data transmission system A transmission apparatus includes a reception line selecting unit, a communication confirming frame transmitting unit, a communication confirming table, and a reception line deciding unit. The reception line selecting unit selects one of several reception lines each... | 01/31/2006 |
| 6980739 | Method for gain control of fiberoptic repeating system A method of gain control in a fiberoptic repeating system is disclosed. By the present invention, the signal levels of an optical cable can be frequently monitored without affecting the control operations of the base station. Thus, damped signal levels can effective... | 12/27/2005 |
| 6925578 | Fault-tolerant switch architecture A computer network employs a fault-tolerant or redundant switch architecture. The network includes redundant data paths coupling end nodes and switches. Fault-tolerant repeaters (FTRs) can be stand-alone devices or can be incorporated into the switches. Using error ... | 08/02/2005 |
| 6842426 | Fault detection for subscriber loop repeaters Systems and methods are described for fault detection for subscriber loop repeaters. A method includes monitoring an upstream signal on a digital subscriber loop for a fault detection signal that is added to said upstream signal at a repeater; and determining if a f... | 01/11/2005 |
| 6785473 | WDM network and WDM network device Disclosed is a WDM network which has: a lightwave path which connects between clients and each of which is provided with an overhead, and a sub-network which is defined by dividing the WDM network. In this WDM network, the sub-network has a partial lightwave path to... | 08/31/2004 |
| 6691167 | Method and apparatus for network problem segment isolation Method and Apparatus for Network Problem Segment Isolation. The present invention provides a method for characterizing network segment quality for a segment transmitting messages from a first endpoint to a second endpoint on a network. The method includes... | 02/10/2004 |
| 6618358 | Method and apparatus for switching a clock source from among multiple T1/E1 lines with user defined priority A clock selection controller is shown which allows a user to assign a priority scheme to recovered clock signals obtained from communication facilities. The clock selection controller also receives a plurality of alarm signals corresponding to the communi... | 09/09/2003 |
| 6590868 | Method and apparatus for restart communication between network elements A method and apparatus for the restart communication between network elements are described. In one embodiment, a method for restarting communication between a first network element and a second network element in a network comprises transmitting a modifi... | 07/08/2003 |
| 6430158 | Wireless communication method, wireless communication apparatus and wireless communication control apparatus A method and apparatus for ensuring wireless transmission among respective communicating apparatuses when constructing a local area network with a plurality of wireless communicating apparatuses. Under the control of a control station (10), a wireless sig... | 08/06/2002 |
| 6298037 | Network data filtering An electronic filter has an input connector adapted for electrical connection to a complimentary output connector of an asymmetrical digital subscriber line. The input connector has an input voltage node for providing electrical input signals to the elect... | 10/02/2001 |
| 6272112 | Repeating unit testing system and communication apparatus as well as communication method In a repeating unit testing system, a first tester includes first packet transmission means for transmitting a plurality of packets, whose transmission destination address is a second repeating unit, to a first repeating unit for a fixed period of time, a... | 08/07/2001 |
| 6272108 | Apparatus and method to allow a frame check sequence to determine the updating of adaptive receiver parameters of a high speed communication device A DSL device performs a frame check sequence operation in a digital signal processor (DSP), i.e., layer one of the OSI seven layer model, heretofore performed only in layer two of the OSI seven layer model. Performing the layer two framing and calculating... | 08/07/2001 |
| 6181676 | System protection switching A radio communication network comprising a plurality of communication terminals and a plurality of repeaters intermediate the communication terminals, with wayside communication paths being established between pairs of the repeaters via two radio channels... | 01/30/2001 |
| 6154444 | Source routing method for fast connection re-establishment in response to early-arriving trouble report messages In a connection-oriented network, a route table and a network resource table are provided in a source node which updates the network resource table in response to a topology state message which is flooded through the network whenever there is a change in ... | 11/28/2000 |
| 6041062 | High-speed synchronous multiplexing apparatus A high-speed sprchronous multiplexing apparatus has a low-speed device and a high-speed device and employs electrical signals to interface the devices with each other. The low-speed device is connected to a low-speed digital circuit. The high-speed device... | 03/21/2000 |
| 6038229 | Tree switching with fast reconfiguration This invention relates to the fast reconfiguration of tree switches. In particular, on-chip parallel control signals are time staggered so that they track the propagation of data or information bits. As a result, it is unnecessary to stop the flow of data... | 03/14/2000 |
