Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7945042 | Method for switching active calls A method and apparatus for switching active calls from one entity to another on a network device. The method includes the steps of collecting the call information, designating a second, or target, entity to receive the call, and switching the call. If compression is... | 05/17/2011 |
| 7120328 | Scalable, modular, strictly non-blocking electro-optical cross connect core An OXC core uses electronic and/or optical switch elements as building blocks and a three stage interconnection architecture according to Clos theorem (Clos configuration), to achieve the strictly non-blocking condition. The hardware architecture of the OXC core is ... | 10/10/2006 |
| 6985577 | Device for optimizing the circuit switching capacity of a switching center The invention relates to a device for circuit switching connections, which are led outside a switching center, with a plurality of peripheral devices that can be addressed under a common HW address by the message distribution system of the switching center. Accordin... | 01/10/2006 |
| 6982975 | Packet switch realizing transmission with no packet delay In a packet switch structured by connecting unit switches in multi-stages which is capable of transmitting packets without delay and accommodating high-speed lines, unit switches at the first stage assign, to an input packet, a sequence number according to a destina... | 01/03/2006 |
| 6940851 | Scheduling the dispatch of cells in non-empty virtual output queues of multistage switches using a pipelined arbitration scheme A pipeline-based matching scheduling approach for input-buffered switches relaxes the timing constraint for arbitration with matching schemes, such as CRRD and CMSD. In the new approach, arbitration may operate in a pipelined manner. Each sub-scheduler is allowed to... | 09/06/2005 |
| 6885663 | Time/space switching component with multiple functionality A time/space switching component is provided with multiple functionality that includes a time switching unit, of a space switching unit of a data channel sequence correction unit and of a control unit. As a result of corresponding mode selection, the different funct... | 04/26/2005 |
| 6714537 | Switch fabric architecture and techniques for implementing rapid hitless switchover A switch is provided that receives user information through a plurality of framer circuits, which group the user information into frames. The frames are fed to a switch fabric including an array of switch elements, each having a switch matrix for routing each frame ... | 03/30/2004 |
| 6643368 | Distributed control exchange A distributed control exchange according to the present invention is provided with a plurality of sections for executing, in the form of a distributed process, a call process for a call occurred at an individual line. When a call has occurred at a certain... | 11/04/2003 |
| 6614904 | Apparatus and method for effecting a communication arrangement between switch arrays An apparatus is disclosed for effecting a communication arrangement of a plurality of communication circuits between first connection loci of a first switch array and second connection loci of a second switch array. The apparatus comprises: (a) a first co... | 09/02/2003 |
| 6567516 | Method and device for controlling affiliation of remote line-collection device with switch A method of controlling affiliation of a remote line-collection device with a plurality of switches connected via a network includes the steps of providing each switch with a backup-storage area in advance in addition to a normal storage area, and transfe... | 05/20/2003 |
| 6430179 | Three stage router for broadcast application A multi-stage signal router includes a clocked storage element connected to each output of each stage of the router. Each clocked storage element is responsive to a trigger event of a clock signal to capture a signal level present at the output to which i... | 08/06/2002 |
| 6265842 | Cross-connect method and apparatus A remotely controlled cross-connection switching matrix, particularly suited for telephone systems, has a jumper pin picker and placement mechanism selectively movable along each of three axes under the control of a single drive motor translating a single... | 07/24/2001 |
| 6101167 | Path switching system A path switching apparatus which performs high-speed switching for quick recovery of an entire network is provide. The apparatus in advance stores information on possibility that an error affects other paths and, upon detecting an error, investigates a po... | 08/08/2000 |
| 6031349 | Cross-connect method and apparatus A remotely controlled cross-connection switching matrix, particularly suited for telephone systems, has a jumper pin picker and placement mechanism selectively movable along each of three axes under the control of a single drive motor translating a single... | 02/29/2000 |
| 5945922 | Widesense nonblocking switching networks A multirate network is Wide Sense Non Blocking with a new routing algorithm classifying requests into large, load greater than 1/(1+p), and small groups, where B is the upper load bound of any given request and p=.left brkt-bot.1/B.right brkt-bot.. Where ... | 08/31/1999 |
| 5801641 | Controller for a non-blocking broadcast network A controller for a nonblocking broadcast switching network comprising an input stage, an output stage, and a middle stage. The input stage has N1 or n1 r1 input ports and r1 switches, where n1 ࣙ2 an... | 09/01/1998 |
| 5686905 | Input/output switching apparatus having virtual control An input/output switching apparatus which can construct the system more flexibly as compared with the conventional system. The input/output switching apparatus is configured so that a user can manage the connection state of a physically-existing switching... | 11/11/1997 |
| 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 |
| 5459718 | Cross connection by using a switch request flag in a digital signal fails before supply to cross connected switch units In a cross connecting network wherein a branching device branches a group of digital signals into duplexed groups for supply to two switch matrix devices, each including switch elements in foremost through last stages, at least three in number, to cross s... | 10/17/1995 |
| 5451936 | Non-blocking broadcast network The present invention pertains to a nonblocking broadcast switching network. The network comprises an input stage. The input stage has N1 or n1 r1 input ports and r1 switches, where n1 ࣙ2 and r... | 09/19/1995 |
| 5404398 | Telephone exchange system A telephone exchange system useful for a bank or brokerage house speech system or the like, which can accommodate a large number of lines (or trunks) and permit improvement of the reliability and call connection processing capacity. The system comprises e... | 04/04/1995 |
| 5367518 | Self-routing switching element and fast packet switch A self-routing switching element in a packet switch functions in a packet synchronous mode in which a plurality of the incoming packet signals are switched by the switching element concurrently during a common time period. For each incoming packet signal ... | 11/22/1994 |
| 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 |
| 5313590 | System having fixedly priorized and grouped by positions I/O lines for interconnecting router elements in plurality of stages within parrallel computer A network and method for interconnecting a plurality of router elements in a parallel computer. The network forms a routing system for routing data from source processing elements to destination processing elements. The input lines and output lines of eac... | 05/17/1994 |
| 5307465 | System for updating network topology based on configuration obtained from subset configuration composition matrix and switching node connection matrix for the subset configuration In a reconfigurable communications system, circuit status bits are stored in a first matrix of rows associated respectively with predefined network configurations and columns associated, respectively, with predefined circuit configurations. Destination st... | 04/26/1994 |
| 5245603 | High-speed determining unit for prioritizing and arbitrating among competing input signals A determining unit in a computer, communication of other system for determining which one of a plurality of requests by competing input signals is to be honored. The determining unit includes a priority and an arbiter unit with a plurality of stages of ar... | 09/14/1993 |
| 5103220 | Method of expanding a three-stage regular switching array A method of expanding a regular three-stage switching array. Original switching blocks of the first and third stages having a smaller number of crosspoints are enlarged to switching blocks having a larger number of crosspoints, by combining the original s... | 04/07/1992 |
| 4983961 | Three stage non-blocking switching array A three-stage non-blocking switching array having twice the number of inputs and outputs for its sub-arrays of its input and output stages as the number of lines to be switched, and having one more sub-array in its intermediate stage than the minumum requ... | 01/08/1991 |
| 4944029 | Rearrangeable multiconnection switching networks constructed using combinatorial designs A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and i... | 07/24/1990 |
| 4922245 | Rearrangeable multiconnection switching networks constructed using combinatorial designs A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and i... | 05/01/1990 |
| 4914430 | Rearrangeable multiconnection switching networks constructed using combinatorial designs A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and i... | 04/03/1990 |
| 4821034 | Digital exchange switch element and network A method and apparatus for a multi-channel space-division switching network capable of providing dedicated line connections from a large number of inlets to a large number of outlets for either analog or digital communication. A flexible and highly modula... | 04/11/1989 |
| 4776006 | Multiplexed data channel controlled telephone system A multiplexed data channel telephone system comprising a master station (221) and one or more remote stations (222) is disclosed. Each station (221, 222) is bridged, in a parallel electrical connection, onto a wire-pair (201) that extends from the station... | 10/04/1988 |
| 4754478 | Method of adding additional subscribers and signals to existing connection After the initiation of the offering of additional telephone paths or audible signals, the existing telephone connection is reswitched onto two subscriber inputs of a conference or offering device provided with the conference switching matrix array and ar... | 06/28/1988 |
| 4573047 | Binary selector stage and a selector and selector system comprising such selector stages Contemporary communication networks, telephony exchanges in particular, are frequently provided with a central control. A consequence thereof is that they are very complex. The invention provides a communication network having a high degree of distributed... | 02/25/1986 |
| 4400627 | Telephone switching network An arrangement and method for interconnecting the stages of a space division switching network which provides simple and continuous growth from a small number of lines to the system's maximum number of lines. The switching network comprises up to M input ... | 08/23/1983 |
| 4349702 | Nodal switching network with binary order links A nodal switching network is disclosed wherein each node is connected to distant nodes by groups of links whose lengths are ordered to span distances definable by powers of a finite (preferably binary) integer. Starting at the calling node, a single idle ... | 09/14/1982 |
| 4320259 | Electronic selector for telecommunications switching An improved telephone system selector unit employing an electronic control arrangement is capable of directly replacing or being added on to existing electro-mechanical switching arrangements of the Strowger or other types which position themselves direct... | 03/16/1982 |
| 4197428 | Segmented matrix type switching device with simplified control Low-level, wide-band signals e.g. for use in telephone transmission are switched in a matrix device. The overall matrix is subdivided into elementary matrices of smaller size and each inlet of the overall matrix is provided with a selector for selecting t... | 04/08/1980 |
| 4188509 | Tone signalling arrangement for a telecommunications exchange A telecommunications exchange having a multiple stage switching network. Calls initiated within the exchange may be local calls to be completed internally, may be trunk calls to a central office or may be enquiry calls completed locally. For calls of the ... | 02/12/1980 |
