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| Number | Title | Issue Date |
| 7245606 | Switching device comprising a common voltage reference path The invention relates to a switching device comprising a plurality of inputs and outputs which are interconnected by an interconnection point matrix for transmitting electric signals supplied from the inputs to the outputs via transmission lines in accordance with a... | 07/17/2007 |
| 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 |
| 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 |
| 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 |
| 6525650 | Electronic switching matrix A high density electronic switching matrix (ESM) includes several splitting modules (200) arranged along a first axis, each including a signal input (202) and several splitter outputs (204). The ESM (500, 600) further includes several switching modules (4... | 02/25/2003 |
| 6157638 | High density packet switch with high speed interfaces and method for using same A high speed packet switch (100) is provided which uses a fabric size of 128×128 and operates at a 2.5 Gbps rate. Parallel data transport techniques are used to obtain the 2.5 Gbps data rate while operating internal switches (160) at slower rates. The pa... | 12/05/2000 |
| 6122249 | Add-drop multiplexing apparatus An add drop multiplexing (ADM) apparatus has a simple and compact structure. The ADM apparatus has high-order interfaces connected to a high-order network, path setting units each for setting a path for a signal according to path data and inserting or dro... | 09/19/2000 |
| 5905723 | System for achieving scalable router performance A network interconnection device having a router connected by a plurality of links to at least one multiport switch is presented. Each of the plurality of links is connected between one port of the router and one port of the multiport switch such that eac... | 05/18/1999 |
| 5847660 | Method for avoiding interference in a cable telephony system Carriers (51) in a cable telephony system (10) are prioritized (70) according to their usability. A local access manager (LAM) (27) creates a frequency list that ranks the carriers (51) based upon their frequency. When a cable fixed access unit (CFAU) (44... | 12/08/1998 |
| 5818349 | Switch composed of identical switch modules A crosspoint switch having M input terminals and N output terminals has (M/m) times (N/n) crosspoint switch modules each having m input conductors and n output conductors. (M/m) of the crosspoint switch modules have their input conductors connected to the... | 10/06/1998 |
| 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 |
| 5621650 | Programmable logic device with internal time-constant multiplexing of signals from external interconnect buses A method and on-chip architecture are disclosed for multiplexing signals from selected external interconnect buses to chip internal buses such that bus rerouting can be implemented programmably without substantially affecting timing relations between time... | 04/15/1997 |
| 5475383 | Cross-point type switch using common memories A cross-point type switch includes a plurality of basic elements arranged in rows and columns so as to form a matrix arrangement of the basic elements. Each of the basic elements includes a plurality of input ports, output ports, expanded input ports and ... | 12/12/1995 |
| 5430442 | Cross point switch with distributed control A communications network including several ports where each port is connected to at least one data processing system element. The ports are interconnected by an information bus. Additionally, the ports are connected to a matrix switch that has the capabil... | 07/04/1995 |
| 5237565 | Multiple path, self-routing switching network for switching asynchronous time division multiplex cells A multiple path, self-routing switching network for switching asynchronous time division multiplex data cells includes input ports (pi1, pi64 . . . ), output ports (po1, po64 . . . ) and switching elements (TSi1, TSi16 . . . ) arranged in a number of stag... | 08/17/1993 |
| 5182554 | Third party evavesdropping for bus control A communication system for providing a communication path between two of a plurality of devices. A first port is provided that is connected to at least one device. A second port is provided connected to a second device. A switch is provided connecting the... | 01/26/1993 |
| 4978953 | Device for monitoring multiple digital data channels A device for switching data channel signal lines of each of a number of data channels through modules having interconnection switching matrices, to a further device adapted to monitor the signal lines, including a module decoder for selective activation o... | 12/18/1990 |
| 4975695 | High speed communication processing system A communications node for handling circuit and packet switching and capable of expansion to include multiple switching matrices, multiple network processors and multiple packet processors is disclosed. Each switch matrix has multipile I/O ports and commun... | 12/04/1990 |
| 4837855 | Non-blocking optical space switch An optical space switch is formed in such a manner that switch elements having two inputs and two outputs are arranged in an n×n matrix form and optical signals from n input highways are switched to n output highways. The switch elements are connected in... | 06/06/1989 |
| 4800383 | Data processing arrays and a method of producing them A notional two-dimensional array of processors is subdivided into a plurality of identical sub-arrays constituted by respective sub-array boards arranged in a stack in which the order of the sub-array boards is determined as if they had been arranged, as ... | 01/24/1989 |
| 4763124 | Signal distribution system hybrid relay controller/driver A hybrid controller is used to control a plurality of relays, within a switching matrix, for effecting connection of an equipment under test to at least one of a plurality of test instruments. To do so, the hybrid controller utilizes latch drivers which a... | 08/09/1988 |
| 4719459 | Signal distribution system switching module The signal distribution function in a signal distribution system is performed in a switching matrix under the control of a hybrid controller. With respect to the switching matrix, there are approximately 120-140 available interface I/O connections such th... | 01/12/1988 |
| 4630046 | Broadband switching network in matrix form A broadband switching network in matrix form composed of a plurality of rows and a plurality of columns, and including a plurality of crosspoint switching circuits each having an input and an output and each associated with a respective row and a respecti... | 12/16/1986 |
| 4605928 | Fault-tolerant array of cross-point switching matrices A cross-point switch comprising an array of cross-point matrices 60, 62, 64, 65 in which the internal lines 22-32 are connected to external lines 45-54 by tri-state buffers 36-44. The external lines can connect different switching matrices. Redundant matr... | 08/12/1986 |
| 4539564 | Electronically controlled interconnection system An all electronic interconnect system having high flexibility, low cost, and higher reliability. A central matrix is formed from a multiplicity of solid state analog switches in which each switch is controlled by a digital address. Each switch can connect... | 09/03/1985 |
| 4491838 | Starloop communication network and control system therefor A starloop communication network for intraestablishment communication in a multiterminal processing system includes a digital switch as its central terminal. In the basic mode, the switch is configured so that the input from each terminal is switched back... | 01/01/1985 |
| 4351985 | Coupling system for a telecommunication exchange installation A coupling system for a telecommunication exchange installation is described having a plurality of interconnected binary switching matrices. Each switching matrix has at least two row and two column lines with means for connecting row lines to column line... | 09/28/1982 |
| 4198546 | Time division multiplex switching network A time division multiplex (TDM) switching network having TDM switching units which, through time position conversion, selectively assign time slots on connected TDM lines is described. The TDM lines are formed into a matrix, the crosspoints of which are c... | 04/15/1980 |
| 4075608 | Multiple-channel data switch A data switch which can rapidly configure and reconfigure multiple channels between computer equipments for digital data transmitted at a rate in excess of 10 megabits per second. The switch includes a switch matrix connected between an input and an outpu... | 02/21/1978 |
| 4024352 | Cross-point switch matrix and multiswitching network using the same A plurality of cross-point matrices each having a plurality of holding circuits respectively associated with a corresponding cross point are arranged in multiple stages, which are linked with each other to form a multi-stage switching network. Each switch... | 05/17/1977 |
| 3983331 | Switch having a matrix of relays Switch comprising a matrix of relays, each providing a connection point between a horizontal input and a vertical input, and auxiliary control relays, at least one per vertical input, fulfilling the horizontal and vertical input control functions and the ... | 09/28/1976 |
