1803 results about "Loopback" patented technology

A phased array mm-wave device includes a substrate, a mm-wave transmitter integrated onto the substrate configured to transmit a mm-wave signal and/or a mm-wave receiver integrated onto the substrate and configured to receive a mm-wave signal. The mm-wave device also includes a phased array antenna system integrated onto the substrate and including two or more antenna elements. The phased array mm-wave device also includes one or more dielectric lenses. A distributed mm-wave distributed combining tree circuit includes at least two pairs of differential transconductors with regenerative degeneration and accepts at least two differential input signals. Two mm-wave loopback methods measure the phased array antenna patterns and the performance of an integrated receiver transmitter system.

Network topography may be discovered by a network element on an Ethernet network by collecting connectivity check messages periodically issued by other network elements on the network and using the information gleaned from those messages to build a topography database. Since the connectivity check messages may be link level or service instance based, the topography database may include network topography as well as service topography on the Ethernet network. Ethernet OAM loopback frames may also be used to cause network elements on the Ethernet network to issue response frames directed to the initiating network element. By collecting responses from the responding network elements, the initiating network element can build a topography database of network elements on the Ethernet network. This topography database may show the overall network topography or service instances on the network, and may provide visibility within one or more domains.

A system for delivering broadcast and communications services, wherein said services comprise provision of one or more Internet media streams; the system comprising one or more gateways which provide connections to external communications networks and nodes and internal loopbacks from which said services are obtained, each of said gateways comprising: a selection system to selectively establish communication channels with said external communication nodes networks and said loopbacks to establish an individual bidirectional channel between each node network and allow recipients to obtain the communication channel of their choice; a processing system comprising non-blocking matrix switching or routing system, buffering, packeting, and addressing systems; processing said channels containing services into digitized packaged data format and said addressing systems identifying, storing and updating the location of each recipient, and applying routing information to each packet of digitized packaged data to enable packets to be correctly routed through the system.

A disk drive is disclosed for connecting to a host, the host comprising loopback circuitry operable to loop a pattern received from the disk drive back to the disk drive. The disk drive comprises interface circuitry including a transmitter driver operable to transmit transmission signals at a transmission amplitude, and a receiver driver operable to receive reception signals. The transmitter driver is configured to transmit at an initial transmission amplitude, and a calibration pattern is transmitted to the host through the transmitter driver. The reception signals received by the receiver driver are monitored to detect a loopback pattern representing a loopback of the calibration pattern. The loopback pattern is processed to detect an error, and the transmission amplitude is adjusted in response to the error.

In a telecommunications network, a broken connection can be detected and located by the next-hop loopback technique. The next hop loopback technique involves generating, sending, and analyzing specific data packets attempting to traverse a telecommunications connection node by node. It is then possible to determine whether a connection has been disconnected based on the fact that data packets cannot properly traverse the link, notify the network management system of the location of the disconnected connection, and determine whether to authorize appropriate action so that the network operator can make the data Reroute to bypass that part of the network. In addition, the next-hop loopback technique can be initiated by the end user on an "as needed" basis rather than on a periodic basis, thereby saving network time and resources.

Maintenance entities may be defined between customer and provider flow points to allow performance management to take place on an Ethernet network. The maintenance entities may be defined for access link, intra-domain, and inter-domain, and may be defined on a link or service basis. The maintenance entities may be used to monitor performance within a network or across networks, and may be used to monitor various performance parameters, such as frame loss, frame delay, frame delay variation, availability, errored frame seconds, service status, frame throughput, the number of frames transmitted, received or dropped, the status of a loopback interface, the amount of time a service has been unavailable, and many other parameters. Several management mechanisms may be used, and the measurements may be collected using a solicited collection method, in which a responses are required and collected, or an unsolicited collection method in which a response is not required.

A system for originating connectivity fault management (CFM) frames on non-CFM aware switches is disclosed. In the disclosed system, an OAM (Operations Administration and Management) proxy networking device connected to a core Ethernet network operates with one or more CPE (Customer Premises Equipment) devices to which it is communicably connected to support CFM out to the CPE devices without requiring that the CPE devices themselves implement CFM functionality. The OAM proxy networking device generates Connectivity Check (CC) frames, Loopback reply frames, and Linktrace reply frames for MEPs (Maintenance End Points) or MIPs (Maintenance Intermediate Points) contained in communication ports on the CPEs. These CFM frames generated by the OAM proxy networking device are then sent within messages from the OAM proxy networking device to the appropriate CPE. When the CPE device receives a message from the OAM proxy networking device containing one of these CFM frames, it checks the operability of a communication port indicated by the message. If the port is operable, the CPE device extracts the CFM frame from the message and originates it through the OAM proxy networking device into the core Ethernet network. The OAM proxy networking device further operates to process Connectivity Check frames received from the core Ethernet network and addressed to the CPE devices by maintaining an MEP connectivity database. As a result, these received Connectivity Check frames are dropped without forwarding to the CPE devices.

A duplex holder for an optical loopback assembly includes a clip adapted to receive and hold an optical loopback assembly. The clip is mounted in an elongated cover which provides a handle for manipulating the holder. A release latch pivotally mounted to the clip engages release arms on the loopback assembly. An elongated member is pivotally connected to the release latch and extends beyond the rear end of the cover so that it is accessible by a user from the rear of the cover. When the elongated member is translated, it rotates the release latch to move the latch arm of the loopback assembly to a release position so that the loopback assembly can be removed from its associated mating connector by convenient manipulation of the holder.

A communication device that includes a femtocell base station and a mobile station transmitter/receiver. The femtocell base station may provide bidirectional internet protocol (IP) communication for one or mobile devices to a cellular network. The femtocell base station may be operable to communicate with the cellular network using a wide area network. The mobile station transmitter/receiver may be coupled to the femtocell base station (in a same housing). The mobile station transmitter/receiver may be operable to perform radio frequency (RF) wireless communication with the cellular network, e.g., to detect and/or report environmental parameters, performing testing (e.g., loopback testing), and/or provide communication for the one or more mobile devices (e.g., when the wide area network is down), among others.

Systems, methods, and apparatus for providing contextual and social awareness in search results through a layer approach are herein disclosed. Awareness in search results is provided through one or more search layers, result operational layer, an interactive result layer, and loopback feedback among embodied layers. Specifically, the system provides collective and contextual intelligence to the presentation of search results. The present invention establishes end-user awareness by way of user layer, contextual awareness by way of session layer, and group awareness by way of group layer. Each layer can work independently of one another or can be integrated for further utility. Further provided are methods of search layer lens, search layer bins, and search layer funneling. The present invention also provides an apparatus providing contextual and/or social awareness for search to be utilized by methods disclosed herein.

A multi-participant videoconference system incorporating a back-channel connection and a client video mixer is disclosed. The multi-participant videoconference system includes a client component and a server component. The server component provides a composite conference video signal to the client component. A region is defined in the composite conference video signal and the size and coordinates of the region are communicated to the client component by the server component over the back-channel. The client component captures local video and mixes local video into the composite conference video signal using the size and coordinates received from the server component for display.

An ATM switching architecture for a wireless telecommunications network includes two separate units having different functionality. The first unit performs mobility control, wherein a virtual path which contains all virtual channels of a mobile terminal is switched from a first port associated with a first access point, to a second port connected to a first port of the second unit. The second unit performs a switching operation, wherein the virtual channels of the mobile terminal are distributed from the first port of the second unit to different destination ports of the second unit. In one embodiment, the two units may be dedicated hardware components, and in another embodiment, one single hardware component is functionally separated into two separate units connected by a loopback link.

A broadband access node includes a port for connection with a Digital Subscriber Line and a processor to run code that implements a virtual maintenance end point (vMEP). The vMEP translates an IEEE 802.1ag Loopback Message (LBM) received from a device on an Ethernet access network into a legacy operations and maintenance (OAM) message that is transmitted to a residential gateway (RG) device. The legacy OAM message determines a link-level connectivity status between broadband access node and the RG device. The vMEP also transmits a reply message back to the device on an Ethernet access network in compliance with the IEEE 802.1ag specification. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

If the communication partner of a client node (A1a) is an encryption communication target node (C1), a DNS Proxy unit (A12a) in the client node rewrites a response to a name resolution request for the communication partner node of an application from the actual IP address of the communication partner node to a loopback address that changes depending on the communication partner. On the basis of the destination loopback address of a data packet transmitted from the application, a communication encryption module (A13a) in the client node identifies the communication partner and the encryption communication path to be used for communication with the communication partner. Hence, encryption communication can simultaneously be executed directly with a plurality of communication partner nodes by using the communication encryption module that operates as an independent process.

A method for enabling virtual data loopback in a computing system may include forwarding a data packet from a first device to a second device; the second device identifying from the data packet egress interface information indicating a first interface for forwarding the data packet out of the computing system; based on the first interface identified from the egress interface information, automatically determining a second interface to the first interface; inserting into the data packet ingress interface information that indicates the second interface; forwarding the data packet, including the ingress interface information, back to the first device; and the first device identifying the ingress interface information indicating the second interface; such that the data packet is looped back to the first device without being communicated via the first or second interface, and such that from the perspective of the first device the data packet was received via the second interface.

The invention relates to a method and system for synchronization of relational databases. The method for synchronization of the relational databases comprises the following steps of: creating a data synchronization task aiming at varied data among a plurality of databases; analyzing the data synchronization task; capturing varied data in an original database; and carrying out the data synchronization task according to schedules. In the technical scheme provided by the invention, a synchronization rule among the databases is created into a task to be carried out, a database agency is used for shielding heterogeneity among the databases, the varied data is captured through a trigger and a capture table, loopback write-in is avoided, and timing and/or multi-threading implementation of the data synchronization task is realized through a scheduler. The method and the system have the advantages of simplicity and easiness in use, flexibility and high efficiency.

A specialized processing block for a programmable logic device incorporates a fundamental processing unit that performs a sum of two multiplications, adding the partial products of both multiplications without computing the individual multiplications. Such fundamental processing units consume less area than conventional separate multipliers and adders. The specialized processing block further has input and output stages, as well as a loopback function, to allow the block to be configured for various digital signal processing operations.

A synchronous localization and mapping method for vision-inertia-laser fusion mainly relates to the technical fields of multi-sensor fusion, SLAM and the like. In order to solve a problem that single sensor SLAM has low precision and is easy to lose in localization and mapping, the invention provides a robust high precision vision, inertia, laser radar fusion SLAM system. A tightly-coupled visual inertia odometer is further optimized through laser radar scanning and matching so as to obtain a more accurate localization result. And when a camera or a laser radar degenerates, and a visual inertia module or a scanning and matching module can not work normally, a system automatically integrates remaining workable modules to maintain stable pose estimation. In order to remove cumulative errors, loopback detection based on an appearance and neighboring matching based on point cloud are added, and then six-degree-of-freedom pose optimization is performed to maintain global consistency. In the invention, robust high-precision localization and mapping effects can be obtained.