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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 5526488 | Dynamic switching system for switching between event driven interfaces in response to switching bit pattern including in data frame in a data communications network A system is disclosed for the dynamic switching between a first Event Driven Interface and a second Event Driven Interface based upon inband information contained in the data frames of a data communications network. This enables the selective realtime tra... | 06/11/1996 |
| 5523997 | Communication network with dynamic intraswitching A communication network (10) includes a constellation of satellites (12) in orbit around the earth. Gateways (14) communicate with the satellites (12), reside on the surface of the earth, and interface the network (10) to the local PSTN (18). User units (... | 06/04/1996 |
| 5521591 | Switching networks with expansive and/or dispersive logical clusters for message routing A class of switching networks is comprised of expansive logical clusters and/or dispersive logical clusters. These clusters are of low degree. The class of networks include multibutterfly networks as well as multi-Benes networks. These networks provide fo... | 05/28/1996 |
| 5519697 | ISDN-served cell-site stations with means for distributing calls to mobile switching systems In a cellular communication system where mobile telephone switching offices (MTSO) are connected to an ISDN, traffic data is sent from each MTSO at intervals to cell-site base stations via ISDN, indicating a volume of calls received during a predetermined... | 05/21/1996 |
| 5519694 | Construction of hierarchical networks through extension A switching network incorporates expander graphs such as multibutterflies but avoids the wiring complications resulting from the randomness of such graphs. The network includes metanodes, each having plural routers. Channels of multiple interconnections a... | 05/21/1996 |
| 5519696 | Method of and facility for randomly selecting one out of N nodes, as well as a switching element, a switching network, and an exchange therewith A random distribution of a traffic stream to several traffic streams is carried out by a cyclic shifting and swapping of elements of an allocation list with at least one random operation. A switching element is implemented according to this approach, wher... | 05/21/1996 |
| 5508999 | Method and system for designing least cost local access networks A method and system is provided for use in cooperation with a computer having a memory for generating an optimized transition plan for the placement and interconnection of carrier hubs in a local access network having a plurality of Central Offices (COs),... | 04/16/1996 |
| 5502816 | Method of routing a request for a virtual circuit based on information from concurrent requests A method of routing a requested virtual circuit in a network advantageously uses information about concurrent requests for other virtual circuits. Each virtual circuit request in a set of concurrent requests is specified by one or more parameters and each... | 03/26/1996 |
| 5502714 | Method for selecting a free link and an arrangement herefor A method and an arrangement for link allocation which provide selecting a free link for a requested connection from a plurality of available route coordinated links according to a particular resource requirement of the requested connection and depending o... | 03/26/1996 |
| 5499377 | Multi-computer access switching system A switching system is provided to enable selective access from a work center W to any of a plurality of computers PC1-PC16. Connections are provided from .the work center W including a video monitor, a keyboard and a mouse through a selector S proximate t... | 03/12/1996 |
| 5497368 | Routing method for a hierarchical communications network, and a hierarchical communications network having improved routing A method and apparatus for selecting routes in a hierarchical communications network wherein a number of mutually isolated areas are provided at a first level, which areas are mutually linked at a second level. In the network, routing devices are provided... | 03/05/1996 |
| 5493564 | Method and apparatus for global routing of electronic messages A method and apparatus for global routing of electronic messages includes maintaining external and internal address information for each user of a messaging system, along with means for associating the external and internal address for any given user. Upo... | 02/20/1996 |
| 5491689 | Method and apparatus for augmenting listening capacity of a signal destination Listening capacity of a signal destination is augmented through the provision of a master switching center (207) and a slave switching center (209) linked via a dedicated communication port (203). Under direction of the master switching center (207), the ... | 02/13/1996 |
| 5481673 | Method for cluster routing in direct link using two associated routing tables at node or signaling transfer point Method and apparatus for cluster routing and management of information from a remote node of a communications network to a network cluster in the presence of at least one direct linkset extending between the remote node and the cluster. The communications... | 01/02/1996 |
| 5467343 | Method and device for consolidation of preferential resource constraints A novel resource constraint merge scheme combines the requested and acceptable resource constraint sets for an efficient solution to the problem of consolidating preferential resource constraints. This solution is particularly useful in consolidation of p... | 11/14/1995 |
| 5465251 | Network addressing Described is a network addressing scheme in which a message sent from a source node to a destination node includes a path address which defines the path over which the message should travel to reach the destination node. At each node along the path betwee... | 11/07/1995 |
| 5463735 | Method of downloading information stored in an arching device to destination network controller through intermediate network controllers in accordance with routing information A network system having a wide variety of applications and particularly applicable to facilities management systems includes network controllers which continuously process data related to building and industrial, environmental, security and other automate... | 10/31/1995 |
| 5459717 | Method and apparatus for routing messagers in an electronic messaging system A method and apparatus for routing a message embodied in a signal received by an electronic messaging system includes formatting a search key using address codes parsed from a user address specified in the message, where each of the address codes correspo... | 10/17/1995 |
| 5452294 | Method and apparatus for adaptive route selection in communication networks An apparatus and method for adaptive route selection between a source and a destination node where multiple routes are available. Link state variables are monitored and updated when call termination requests or call arrival requests are received. When a c... | 09/19/1995 |
| 5446730 | Method for dynamic connection management in integrated communication networks A method (800, 900, 1000) provides dynamic connection management in integrated communication networks such that an acceptable quality of service (QOS) over an entire duration of a connection is maintained. For example, the present invention facilitates ad... | 08/29/1995 |
| 5444700 | Switching element and method for controlling the same The invention relates to a switching element and method for controlling the same, for high-speed data traffic. The switching element comprises two input ports (I1, I2) and two output ports (01, 02), wherethrough data is transmitted in parallel form as dat... | 08/22/1995 |
| 5436888 | Communication path control method and communication device In a method for controlling communication paths multiplexed in a communication medium connecting first and second communication devices, each of which devices can simultaneously perform a plurality of works. It is determined whether a communication reques... | 07/25/1995 |
| 5408616 | System for redirecting output to either return bus or next module line upon the detection of the presence or absence of next module using ground line An electronic library system cabinet having a ring bus architecture with a high reliability backplane wherein the electronic library system includes a plurality of slots for receiving a plurality of modules therein. The modules capability of determining w... | 04/18/1995 |
| 5390242 | Rerouting in a distributed telecommunication system Routing calls using a new protocol message which is a redirect message in a telecommunication system having a number of switching nodes to avoid circular paths among the switching nodes and for rerouting calls in the event of failures or overload conditio... | 02/14/1995 |
| 5384768 | Tracing system for tracing transmission route in transmission network A tracing system displays a transmission route between multiplexers in a transmission network. The system includes a MUX map database of the states in which multiplexers in each of stations are connected to each other, a route map database of attributes o... | 01/24/1995 |
| 5375150 | Alarm guided critical function and success path monitoring The use of alarm indication on the overview (IPSO) display to initiate diagnosis of challenges to critical functions or unavailability of success paths, and further alarm-based guidance toward ultimate diagnosis.... | 12/20/1994 |
| 5371495 | Deterministic routing method for minimal switch circuits A deterministic routing method for switch matrices. The routed matrix receives N input signals and produces M output signals on M output columns. The method of the present invention has three steps. First, each of the M output columns in the switch matrix... | 12/06/1994 |
| 5371735 | Communication network with non-unique device identifiers and method of establishing connection paths in such a network A communication network having a service processor, a plurality of terminal nodes, and a network of switch nodes for switchably connecting the service processor to each terminal node by way of one or more connection paths. Each switch node in the communic... | 12/06/1994 |
| 5341368 | Digital switching system interconnecting buses with imcompatible protocols A digital switching system (10) in accordance with the invention includes a digital switching matrix (12) having an input bus and output bus; a plurality of information systems (18, 20 and 22) with each information system having an information bus for tra... | 08/23/1994 |
| 5331630 | Renewal method and apparatus for AU-4 and TU-3 pointers of synchronous digital hierarchy Pointer renewal apparatus for AU-4 and TU-3 at an NNI of SDH recommended by CCITT, G707-G709. The apparatus comprises a retiming block 1 for input data, a pointer-detecting block 2 for the TU-3 pointer from input data, a pointer-analyzing block 4, a main ... | 07/19/1994 |
| 5325090 | Three-stage, at least doubled atm switching network Three-stage, at least doubled ATM switching network. A method for expanding a three-stage, stretched and at least doubled ATM self-routing switching network, the switching matrices of the second switching stage can be respectively doubled in one redundanc... | 06/28/1994 |
| 5303383 | Multiprocessor computer system A multistage interconnect network (MIN) capable of supporting massive parallel processing, including point-to-point and multicast communications between processor modules (PMs) which are connected to the input and output ports of the network. The network ... | 04/12/1994 |
| 5295154 | Radio frequency local area network An apparatus and a method for routing data in a radio data communication system having one or more host computers, one or more intermediate base stations, and one or more RF terminals organizes the intermediate base stations into an optimal spanning-tree ... | 03/15/1994 |
| 5287103 | Method and apparatus for providing local area network clients with internetwork identification data An arrangement providing an internetwork identification in response to a broadcast message from a LAN client wherein the broadcast message comprises the LAN client's LAN address. The exemplary apparatus comprises a receiver for receiving a message from th... | 02/15/1994 |
| 5271007 | Network system having controlled access to available resources A network system in which a plurality of information devices connected to each other through a network are provided so that a resource is released to the information devices through the network, the system comprising: a storage device for storing an acces... | 12/14/1993 |
| 5184345 | Enhanced ISDN 800 service An enhanced "800" service automatically provides a second communications path between a customer and a business in order to provide additional product information, such as video information, to the customer. For example, upon receipt of a customer telepho... | 02/02/1993 |
| 5182550 | Inter-network connection system An inter-network connection system wherein a local signaling network including gateway offices of at least two signaling networks to be interconnected is configured between the signaling networks to be interconnected, and the inter-network connection is c... | 01/26/1993 |
| 5168572 | System for dynamic selection of globally-determined optimal data path A system for choosing a data path through a multi-processor array on a least time and path availability basis. In a preferred embodiment, each processor has an associated path selection element. The element associated with the data source sends out a sign... | 12/01/1992 |
| 5138657 | Method and apparatus for controlling a digital crossconnect system from a switching system This invention relates to apparatus and a method for controlling a Digital Access and Crossconnect System (DACS) from a connected toll switching system. All control messages from operations support systems (OSS) for making crossconnect changes in the DACS... | 08/11/1992 |
| 5073980 | Photonic switch employing shared data transmission facility An optical message distribution system is described which includes both a plurality of message sources and destinations. Each optical message includes a destination address portion and a data portion containing data signals. At a message source, an encode... | 12/17/1991 |
