摘要:
A mechanism for providing point-to-point and point-to-multipoint connections in an ATM network converts VPI/VCI information at an ingress ATM device on incoming cells from a source endpoint to internal VP/VCI information that is used to switch the cells through an ATM network to an egress ATM device. At the egress ATM device, the internal VPI/VCI information is converted back to the source VPI/VCI information for transmission of cells to the destination endpoint. In such a manner, an ATM switch network is able to provide point-to-point connections without requiring individual configuration of VPI/VCI information at the ingress and egress ATM devices.
摘要:
A system and method for fast and reliable failure notification and accelerated switchover for path protection in a communications network having several overlapping areas of nodes interconnected by communications links is described. Upon a failure event involving one of the communications links, a failure message is broadcast identifying the failed link, the broadcast being confined within the areas which include the failed link. A reliable transmission protocol is provided wherein at one or more of the nodes, a LAPD protocol unnumbered information frame containing the failure message is sent to connected nodes. The failure message is resent in another unnumbered information frame after a time interval unless an unnumbered acknowledgment frame containing or referencing the failure message is received from the connected node. A method of path protection includes establishing plural working paths through the nodes. For each working path, an associated protection path is precalculated. A priority is assigned to each working path and associated protection path. A protection path is precalculated for each area through which a particular working path traverses. Upon a failure event, working paths that include the failed link are switched to their respective protection paths. Higher priority protection paths can preempt lower priority paths that share at least one link. At each node, linked lists for protection path activation, working path deactivation and path preemption are implemented upon a failure event.
摘要:
A video program is displayed for viewing by an individual on a video player device. The individual viewing the program can enter clues discovered in the video program content into a program application running on either a communication device local to the individual or running in device that is remote from the individual. The program application operates to determine whether or not the individual has enter a correct number of valid clues, and if so the individual is permitted to participate in an activity run by the program application.
摘要:
In one embodiment, content is delivered to a customer over a communication network and written to a storage medium. The customer may be authorized to make additional copies of the content. The delivered content and copies are tracked in support of rental, sale or resale applications.
摘要:
An apparatus comprising system memory and a cache memory maintain system coherency for data stored in a subset of memory elements utilizing software coherency control, while system coherency for all remaining memory elements is maintained utilizing hardware coherency control.
摘要:
In one embodiment, content is delivered to a customer over a communications network and written to a storage medium. The customer may be authorized to make additional copies of the content. The delivered content and copies are tracked in support of rental, sale or resale applications.
摘要:
An apparatus for measurement of force exerted by the tongue or the lips. The apparatus comprises a sensor assembly having a force-receiving element, a force transducer providing a sensor signal, and a shaft mechanically coupling the force applied to the force-receiving element to the force transducer. An apparatus for providing isometric or resistive treatment to increase the strength and motility of the tongue or the lips. The apparatus comprises an isometric assembly or a resistive assembly having a force-receiving element providing an isometric barrier or a resistive force, respectively, a support structure, and a shaft connecting the force-receiving element to the support structure.
摘要:
A communications network gateway receives a stream of information formatted to be compatible with a first sub-network and it receives a stream of information formatted to be compatible with a second sub-network. The frames in the second stream are extracted and modified to be compatible with the transmission format of the first sub-network. The two streams of information are then aggregated for transmission over a logical network link in a manner that optimizes the bandwidth utilization of the overall communications network.
摘要:
A communication system includes plural nodes interconnected with an optical transmission medium capable of carrying plural bands of optical channels. A device at each node is coupled to the medium for dropping one or more bands, adding one or more bands, and passively transmitting other bands such that a pair of nodes can communicate directly using a band common to the respective bands. One band of the bands associated with each of a first set of nodes overlaps with one band of the bands associated with each of a second set of nodes. Multiple overlapping bands provide a high level of wavelength termination diversity. An optical management bus system and method connects plural hybrid optical/electrical cables between transmission equipment and optical modules which connect to network fibers to provide a set of electrical connections that can be used to determine optical interconnections in an optical shelf configuration. A particular optical module can be identified as the root of an optical branching tree at a node and thereby the unique termination point of a network fiber such that a physical fiber topology can be associated with the logical fiber topology.
摘要:
A trusted relationship service includes a certificate authentication server and a secure file host. The certificate authentication server operates to receive requests from a supplier and a customer to register with the service, verifies the identities of the supplier and the customer and sends digital certificates to both the supplier and the customer. The supplier can send information to the trusted relationship service where it is posted in a secure file host. The supplier can solicit the customer to visit the trusted relationship service web site to view the supplier information stored there, whereupon the customer can use their digital certificate to access the trusted relationship service site and is granted permission by the site to view the supplier information.