Matches 51 - 100 out of 154 < 1 2 3 4 >
Match Document Document Title
5151554 High speed switch scanning apparatus  
A key matrix scanning apparatus is provided. The key matrix comprises a plurality of switches which are arranged at intersections of a plurality of input signal lines and a plurality of output...
5095480 Message routing system for shared communication media networks  
A plurality of disparate communication network systems communicate with each other through the use of different physical media protocols. Each of the systems has at least one input and one output....
5067076 Circuit arrangement for serial data transfer  
A circut arrangement for serial data transfer has a transmitting device with several bit-parallel input information units, a serial data transfer line and a receiving device via which the...
5051720 Remote control system using power line of remote site  
A system for controlling power at a remote site includes a two channel modem having a first channel dedicated for transmitting power controlling messages to power control modules and a second...
5050166 Transfer of messages in a multiplexed system  
A method and apparatus for transmitting variable length messages on a network in fixed length slots including the provision of a source identifier field in the header of each slot, the source...
5018133 Network system comprising a plurality of LANs using hierarchical routing  
In a network system according to the hierarchical routing method, in which at least one main LAN and a plurality of sub-LANs are connected hierarchically through bridges, bridge IDs having the...
4901004 Apparatus and method for mapping the connectivity of communications systems with multiple communications paths  
An apparatus and method, using a computer, for the efficient generation of a wiring map of the connectivity between two sets of terminals at different locations which have established communication...
4873521 Address administration unit of a multi-processor central control unit of a communications switching system  
An address management unit is provided for the conversion of logical addresses contained in a program into physical addresses for a multi-processor central control unit of a computer-controlled...
4821258 Crosspoint circuitry for data packet space division switches  
An electronics space-division packet switch is disclosed in which each switch crosspoint includes digital logic capable of resolving simultaneous contentions for the source output buss medium. In...
4817082 Crosspoint switching system using control rings with fast token circulation  
A switching arrangement comprising a crossbar array of crosspoint elements where each column of crosspoint elements, is associated with its own control ring mechanism. The enabling of the...
4807184 Modular multiple processor architecture using distributed cross-point switch  
A modular switching system for connecting a plurality of digital computers to a plurality of computer memories, employing interconnecting digital switching modules. Each module has the capability...
4807149 Measuring arrangement with a plurality of measuring units  
The measuring units of a measuring system are combined in groups each with a respective selecting unit. A cable, into which the measuring and selecting units are integrated, connects these one with...
4761747 Switching network for monitoring stations  
An engineer, who is monitoring signals on oscilloscopes, can use one of a set of pushbuttons to select a specific channel for further monitoring on one or more other instruments. The switching...
4740956 Linear-space signalling for a circuit-switched network  
A circuit-switched local area network relies on a star topology for data transfer. Signalling information is confined to a single common signalling link or channel. Contention on the signalling...
4716407 Trunked communication system true priority channel scan  
While receiving a lower priority message, a remote transceiver unit in a trunked radio communication system is diverted immediately to a priority channel when a priority message is generated. In a...
4617642 Select switch responsive to a break code  
Apparatus whereby a single component of electrical apparatus may be disconnected from one of a group of components and connected to another of the group in response to a break code. The apparatus...
4597104 Selective call signal detection circuit for multi-channel access type radio receiving station  
A selective call signal detection circuit comprises a channel free/busy state detection circuit for scanning a plurality of communication channels to determine their respective free/busy states, a...
4542300 High frequency signal switching device  
An improved high frequency signal changeover switch is provided for use especially as a horizontal-vertical selection switch in an artificial satellite broadcast receiving system for the purpose of...
4530051 Program process execution in a distributed multiprocessor system  
A method and apparatus for executing parts of a program process on two processors of a multiprocessor system. A home process resides in a home processor and is the destination process of all...
4484325 Four way selector switch for a five port module as a node asynchronous speed independent network of concurrent processors  
A four way selector switch for a five port module as a node in an asynchronous speed independent network of concurrent processors, each port of the module including an input selector switch and an...
4484314 Cop switch-position encoder, method and apparatus  
A pulse is applied sequentially to each geophone input line to the stator of a CDP switch. A pulse detector is connected to the first output line of the CDP Switch cursor. A counter counts the...
4482996 Five port module as a node in an asynchronous speed independent network of concurrent processors  
A five port module as a node in an asynchronous speed independent network of concurrent processors, each port of the module including an input selector switch and an output selector switch such...
4475188 Four way arbiter switch for a five port module as a node in an asynchronous speed independent network of concurrent processors  
A four way arbiter switch for a five port module as a node in an asynchronous speed independent network of concurrent processors, each port of the module including an input selector switch and an...
4468664 Non-home run zoning system  
Zone indication is provided for a facility monitoring and control system by providing the system's sensors and control unit with counters which are simultaneously incremented with clock pulses...
4408184 Keyboard switch circuit  
A keyboard switch circuit for directly obtaining binary coded signals. The keyboard has 2 m columns and two or more rows which are connected to a sequential timing source. The rows and columns are...
4404556 Bit expansion circuit  
A n-bit parallel output port of a programmable controller (22) is coupled to a bit expansion circuit (24). A plurality of channel-select bits are decoded by a multiplexer board (26) to select and...
4395772 Line protection switch controller  
An errorless line protection switching system utilizes a variable delay (29) in the spare channel (21-24, 26-29, 31-33) adjusted to provide data signal alignment with an impaired regular channel...
4375691 Method and device for frequency translation  
A digital communications system includes a plurality of master stations communicating with a plurality of terminals over a single communication line which carries a plurality of duplex...
4366479 Control information communication method and system through a common signal transmission line  
Transmission and communication of control information through a common signal transmission line are performed with a high transmission efficiency by the use of a control data signal including a...
4366478 Signal transmitting and receiving apparatus  
Disclosed is a signal transmitting and receiving apparatus for transmitting and receiving parallel-by-word data signals, converting the parallel-by-word data signal to serial-by-word data signal,...
4320518 Switching control system  
The present invention relates to a system in accordance with which switching signal produced in the one piece of equipment is transmitted to another piece of equipment through a digital/analog...
4298860 Monitor and control apparatus  
A monitor and control apparatus according to the present disclosure includes a configuration and environment monitor (CEM) connected to a plurality of remote station monitors of a computer system...
4271403 Coaxial cable switching circuit  
A coaxial cable switching circuit includes a differential comparator connected to a cable to be switched, for receiving a switching pulse therefrom. The output of the differential comparator is...
4231019 Remote control arrangement for a medical appliance  
In a remote control arrangement for a medical appliance, a transmitter and a receiver are provided. The transmitter has a frequency generator controllable by means of code words which generate...
4231015 Multiple-processor digital communication system  
A digital communication system is disclosed for communicating among two central consoles and a plurality of local controllers, such as may be used in a radiation and monitoring system and the like....
4110738 Anti-theft alarm with coded radio link  
At a protected site, intrusion sensors are connected to a radio transmitter which signals a remote receiver. In the transmitter, a code matrix is scanned in response to signals from a clock pulse...
3943488 Multiplex telemetering system  
A multiplex telemetering system for transmitting a group of data signals each representing a distinct analog value, over a common channel to a receiving terminal where the data signals are fed into...
3918002 Electronic channel selector system with preset-at-power-on feature  
An electronic channel selector system for television receivers having a "preset-at-power-on" feature comprised of a discriminator which produces from the power on increasing voltage transient a...
3886453 Card-programmed frequency control unit for a transceiver  
This relates to a marine type radiotelephone which is a frequency synthesized, autotuned high frequency single sideband transceiver. The channels with 100 Hz resolution in the high frequency...
3878463 AUTOMATIC CHANNEL SWITCHING SYSTEM  
An automatic protection switching system whose switching action is primarily controlled by a logic control circuit which has sections corresponding to the regular and protection channels of the...
3691631 METHOD OF MAKING A VOLTAGE ACTUATABLE SWITCH  
A voltage actuated switch comprises a conductor, an essentially defect-free layer of insulating material which has a portion thereof that overlies and engages at least a part of a surface of that...
3685023 SCANNING ARRANGEMENT FOR A MULTICHANNEL TOTALIZING SYSTEM  
Pulses received over a plurality of channels are stored in storage devices. These storage devices are scanned rapidly for the purpose of detecting the presence of stored pulses. When a stored pulse...
3675205 SYSTEM FOR SELECTION AND REMOTE CONTROL WITH SEQUENTIAL DECODING HAVING PLURAL DECODING STAGES  
A system is disclosed for selecting and controlling any one of a number of remotely-located, controllable subsystems. A decoding network establishes a direct link from the user to control circuitry...
3633163 PLURAL LEVEL HIGH-SPEED SELECTION CIRCUIT  
There is described a selection circuit for selecting one among a number of contending input signals for completing a circuit to the selected one of the inputs. The selection is done on a multilevel...
3485953 ASYNCHRONOUS TIME-SHARING OF MULTI-CARRIER CHANNELS  
3469151 MULTIPLE CHANNEL CUT-OFF MEANS  
3467785 ROUTE SEARCHING GUIDE WIRE NETWORKS  
3436484 MULTICHANNEL COMMUNICATION SYSTEM  
3432621 TRAFFIC LOAD EQUALIZATION ARRANGEMENT  
3422226 METHOD OF,AND EQUIPMENT FOR TIME-DIVIDED,ASYNCHRONOUS,ADDRESS-CODED TRANSMISSION OF INFORMATION IN MULTI-CHANNEL SYSTEMS  
Matches 51 - 100 out of 154 < 1 2 3 4 >