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| Number | Title | Issue Date |
| 8169296 | Switch matrix A switch matrix module (600) includes programmable stub breakers (508-512, 514-518) which can break off the bus and isolate unused portion of the switch matrix. Using three-way stub breakers (508-512, 514-518) at the ... | 05/01/2012 |
| 7424011 | Rearrangeably nonblocking multicast multi-stage networks A rearrangeably nonblocking multicast network includes an input stage having r1 switches and n1 inlet links for each of r1 switches, an output stage having r2 switches and n2 outlet links for each of r2 | 09/09/2008 |
| 7356628 | Packet switch with multiple addressable components An integrated circuit on which are implemented a number of devices that conform to the Rapidio network architecture. Included in the integrated circuit are two addressed RapidIO devices and switching devices which provide 24 switching ports. The devices have a packe... | 04/08/2008 |
| 7336657 | Inter-nodal data transfer system and data transfer apparatus A plurality of inter-nodal control means are provided at a connection part between an inter-nodal crossbar switch for an inter-nodal data transfer and each node so as to process one inter-nodal transfer command, and an inter-nodal transfer capacity can be variably s... | 02/26/2008 |
| 7277428 | Multiple stage cross connect switch A cross connect switch has a plurality of stages. Each stage has a plurality of packers, a plurality of memory portions and a plurality of multiplexers. Each packer receives input data and provides the input data as a set of contiguous valid data. The multiplexers d... | 10/02/2007 |
| 7268642 | Universal switch A dimensionally flexible sparse matrix comprising multiple ports connected to a plurality of interconnected universal switches is disclosed. Each universal switch has at least three terminals and is switchable to connect any pair or all three terminals together. The... | 09/11/2007 |
| 7236084 | Crosspoint switch with switch matrix module A crosspoint switch including a switch matrix modules and programming features. A switch matrix modules include input lines tied to inputs of the switch through precompensation networks. The programming features include user initialization states and reduced and gro... | 06/26/2007 |
| 7190412 | Video switching systems and methods Systems and methods for performing video switching between multiple inputs and outputs are disclosed. In one embodiment, a system includes a video box coupled to one or more user interfaces, a plurality of video inputs, and a plurality of video outputs. The video bo... | 03/13/2007 |
| 7190677 | System and method for multiple test access in a communication network A method of providing multiple test access for test equipment in a communication network is provided. The method comprises the step of coupling test apparatus to a first communication line via a first communication circuit in the test apparatus wherein the first com... | 03/13/2007 |
| 7187672 | Connection rearrangement in communication switches A processor is programmed to reduce a problem of adding a new connection to a time-space-time (TST) switch of a communication network into a problem of graph theory, and to solve the problem using a heuristic instead of an exact algorithm. A solution, if provided by... | 03/06/2007 |
| 7158512 | System and method for scheduling a cross-bar The present invention is a system and a method for connection scheduling of crossbar switches having at least one ingress and at least one egress, each of the egresses is connected to at least one port, comprising at least one scheduler for scheduling matches betwee... | 01/02/2007 |
| 7151432 | Circuit and method for a switch matrix and switch sensing Aspects of a switch matrix circuit are provided. In accordance with a circuit aspect, a plurality of switches are organized in a row and column configuration. Coupled to the plurality of switches is a current sensing circuit. The current sensing circuit includes a t... | 12/19/2006 |
| 6995656 | Switching device comprising local decoding means The invention relates to a switching device comprising a plurality of inputs and outputs which are interconnected by a matrix of interconnection points for transmitting electric signals supplied from the inputs to the outputs via transmission lines in accordance wit... | 02/07/2006 |
| 6965299 | High-speed, low-power crossbar switch In a crosspoint switch, both input buses and output buses are driven at low swing. Self-timed, differential, push-pull, low swing driver circuits drive the input buses and are provided in the crosspoints to drive the output buses. Clocked, regenerative sense amplifi... | 11/15/2005 |
| 6958598 | Efficient switching architecture with reduced stub lengths A switching topology for communicating signals in an automatic test system includes a plurality of switching circuits each for selectively passing signals or crossing signals. Switching circuits are connected together such that each node of any switching circuit con... | 10/25/2005 |
| 6946948 | Crosspoint switch with switch matrix module A crosspoint switch including a switch matrix modules and programming features. A switch matrix modules include input lines tied to inputs of the switch through precompensation networks. The programming features include user initialization states and reduced and gro... | 09/20/2005 |
| 6943849 | Connection apparatus for CCTV systems A video signal connection apparatus comprises an array of individual video signal connector contacts arranged in a matrix having connector contact rows and connector contact columns, the individual video signal connector contacts extending in a first connection dire... | 09/13/2005 |
| 6937133 | Apparatus and method for resource arbitration An arbitration process sets the connections to be made between ingress and egress ports of a crossbar switch of a data switching system. A weight parameter is used for each pair of ingress and egress ports. Connection requests are generated indicating ingress ports ... | 08/30/2005 |
| 6882645 | Apparatus and method for sequencing memory operations in an asynchronous switch fabric One embodiment of the present invention provides a system that facilitates implementing a memory mechanism within an asynchronous switch fabric. The system includes a memory device, which does not preserve first-in, first-out semantics such as a random access memory... | 04/19/2005 |
| 6842104 | SYSTEM LSI AND A CROSS-BUS SWITCH APPARATUS ACHIEVED IN A PLURALITY OF CIRCUITS IN WHICH TWO OR MORE PAIRS OF A SOURCE APPARATUS AND A DESTINATION APPARATUS ARE CONNECTED SIMULTANEOUSLY AND BUSES ARE WIRED WITHOUT CONCENTRATION A cross-bus switch apparatus which establishes simultaneously two or more pairs of connections between (i) a source bus arbitrarily selected from a plurality of source buses connected to one or more source apparatuses and (ii) a destination bus arbitrarily selected ... | 01/11/2005 |
| 6771162 | Active cell crosspoint switch A high-speed, low distortion N×M crosspoint switch selectively routes input signals arriving at any of N input terminals to one or more of M output terminals. The crosspoint switch includes a switch cell array having N rows and M columns of switch cells. Each of N ... | 08/03/2004 |
| 6754175 | Hitless method and apparatus for upgrading a network This invention provides for a system and method for upgrading an ATM network to a new release of a vendor's ATM platform, or for converting an ATM network to a different vendor's ATM platform, preferably without experiencing any service disruptions. The system and m... | 06/22/2004 |
| 6737958 | Crosspoint switch with reduced power consumption A crosspoint switch architecture implements high-speed packet switches and incorporates a power-saving bias control circuit with each switch cell. Each switch cell is equipped with two memory cells and a bias control circuit. Power savings are obtained by controllin... | 05/18/2004 |
| 6696917 | Folded Clos architecture switching A novel folded Clos switch apparatus and method therefore for reducing the number of unemployed I/O terminals of a multistage Clos switching network by partitioning a crossbar switch to provide both the first (yth) and last (x-y+1th) stage of a multistage... | 02/24/2004 |
| 6639523 | Resistive keyboard with status keys An arrangement of a plurality of status keys in a keyboard for entering information in an electronic device. The keyboard comprises a plurality of regular keys connected to a resistive strip at a plurality of locations for providing a first signal when on... | 10/28/2003 |
| 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 |
| 6512447 | Bussing high frequency crosspoint switches Bussing high frequency crosspoint switches is achieved by extending an output transmission line bus through an integrated circuit (IC) upon which the crosspoint switch is laid. The internal portion of the output transmission line bus is coupled to an outp... | 01/28/2003 |
| 6510222 | Miniature connector array A line multiplier is formed of n upstream lines and m downstream lines where m>n by providing a micro-technology array of m×n crosspoints switches using, e.g., magnetic latching, wherein the latching magnets are heated to the Curie temperature to cause t... | 01/21/2003 |
| 6414953 | Multi-protocol cross connect switch The present invention relates to a cross connect switch which allows different protocols to be used. The switch is made up of two cross point modules, one for transmission and one for reception. I/O blocks corresponding to each station or network interfac... | 07/02/2002 |
| 6351258 | Switcher system and I/O switching method The present invention switches an input/output route for each signal, even if types of signals are increased, without installing additional switchers. The present invention provides a matrix-shaped switcher, including a group of a plurality of cross-point... | 02/26/2002 |
| 6307852 | Rotator switch data path structures Several rotator switch architectures are provided that enhance performance of a basic rotator switch. The rotator switches having double buffered tandem nodes, multiplexing two or more sources onto each tandem node, partitioning the rotator into two or mo... | 10/23/2001 |
| 6018523 | Switching networks having improved layouts Improved layouts for switching networks having N.multidot.log N switching circuits, and improved switches incorporating such layouts, are disclosed. An improved layout reduces grid-area requirements for Benes switching network to an area of less than 3N | 01/25/2000 |
| 5923868 | Methods for maximizing routability in a programmable interconnect matrix having less than full connectability Methods for designing a programmable interconnect matrix having reduced connectivity to achieve maximum routability for the reduced connectivity. An array of multiplexors, each having a multiplexor width wmux that is less than number of input c... | 07/13/1999 |
| 5910780 | Switched-transconductance multiplexer circuit with integrated T-switches A switched-transconductance circuit used in a multiplexer forming a part of a crosspoint switch includes integrated T-switches that are enabled when the transconductance stage is not enabled. The transconductance stage is selectively enabled by controllin... | 06/08/1999 |
| 5848066 | Methods for maximizing routability in a programmable interconnect matrix having less than full connectability Methods for designing a programmable interconnect matrix having reduced connectivity to achieve maximum routability for the reduced connectivity. An array of multiplexors, each having a multiplexor width wmux that is less than number of input c... | 12/08/1998 |
| 5721844 | Multifunctional data switch A multifunctional data switch including a switch, a first computer connector connected to a first computer, a second computer connector connected to a second computer, and a printer connector connected to a printer, wherein the switch can be controlled to... | 02/24/1998 |
| 5559971 | Folded hierarchical crosspoint array A hierarchical crosspoint array is formed by switch cells occupying separate rectangles in a common plane of an integrated circuit. The switch cells are arranged to form square subarrays which, along with a corresponding set of control cells form a compac... | 09/24/1996 |
| 5500753 | Method and system for connecting an optical network unit with a plurality of user sites A method and system to connect an optical network unit with a plurality of user sites. The invention includes the steps of and circuitry for connecting a plurality of line circuits to a cross-connect matrix. The optical network unit contains both the line... | 03/19/1996 |
| 5465087 | Broadband switch A broadband space switch matrix includes a parallel combination of individual switch modules each comprising a cascade of pass-transistor selectors, NAND gates, and inverters arranged into a multi-stage tree multiplexing configuration. The switching speed... | 11/07/1995 |
| 5436617 | Repeaters for digital data networks A multiport repeater for a data network operating on a CSMA or CSMA/CD protocol, for example an Ethernet local area network, has signals transmitted from port to port via a crosspoint switch or other appropriate switching means. The destination address of... | 07/25/1995 |
