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4723120 |
Method and apparatus for constructing and operating multipoint communication networks utilizing point-to point hardware and interfaces
The invention permits multiple secondary stations to be connected in a multipoint communication network to a single primary station utilizing point-to-point interfaces such as the standard RS-232...
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4718005 |
Distributed control of alias name usage in networks
Computer systems linked to nodes in a communication network communicate directly with each other to establish name associations for entities (e.g. programs, storage files, etc.) susceptible of...
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4716410 |
CATV data transmission method
A CATV data transmission method in which data is transmitted to terminal units having their own addresses by addressing. Each terminal unit has a memory storing its own address and a plurality of...
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4712104 |
Remote control blind system
A remote control system for window blinds including a control unit provided for each of a plurality of blinds which are opened and closed freely, each blind further including rotatable slats. The...
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4707694 |
Telephone system port communication method and apparatus
There is disclosed a port communication method and apparatus for controlling system controller communications with port circuits of the system. The port communication apparatus generates commands...
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4706080 |
Interconnection of broadcast networks
A process is disclosed for effecting transmission over a generally cyclic communication system comprising numerous networks interconnected by gateway pairs. Each gateway of each pair implements a...
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4706085 |
Apparatus and method for generating multi-digit codes
A radio apparatus, particularly a personal transceiver, includes a manual keypad for keying numerical data, read and write function keys, and a data processor. The processor is programmed to store...
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4706272 |
Paging communication system
A paging communication system is configured so that a plurality of receivers are called by group in response to a paging signal transmitted from a base station. The base station is provided with...
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4703451 |
Data relay system
A data relay system includes a plurality of data relays. Addresses are transmitted in one direction serially to each data relay and data is transmitted in the other direction serially through the...
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4701908 |
Network system utilizing plural station addresses
There is disclosed a communication network system in which the token or communication right is transferred among plural stations. In this system the different stations have different frequencies of...
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4692761 |
Adaptive communication network and method
A communication system for use in a network of interconnected communication paths such as electrical power lines utilized for distributing electrical power. The system includes two or more remote...
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4689786 |
Local area network with self assigned address method
A local area network is disclosed including apparatus and methods for transferring data between a plurality of data processing resources ("agents") coupled to a cable. In the preferred embodiment,...
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4688035 |
End user data stream syntax
Disclosed is a communication transport message format for carrying control information, relevant only to a transport system and end user data. The end user data is prefixed by a length field. The...
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4684941 |
Method of communications between register-modelled radio devices
A register-modelled radio system comprising a plurality of register-modelled processors having addressable registers for modelling the virtual state of the processor; a serial bus, interconnecting...
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4683531 |
Polling method for data processing system
A method for polling a plurality of remote processing units includes establishing a table of active and inactive remote processing units, sequentially polling each of the active processing units,...
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4682168 |
Time-slot addressed, system keyed multiplex device
A time-slot addressed, system keyed multiplex device is taught. Briefly stated, a ribbon cable provides a power and ground lead and a clock and data signal lead. A microcomputer or master...
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4682167 |
Data transfer system for numerically controlled equipment
A data transfer system transfers, bit by bit, serial data sent from first equipment (10) to predetermined bits of a predetermined address in a RAM (300) of second equipment (30). Each bit of the...
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4680583 |
Terminal address assignment in a broadcast transmission system
In a broadcast transmission system, in which in normal operation messages and terminal addresses are transmitted between a master station and a plurality of terminals each having an assigned...
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4679045 |
Sequencing data transmission process
In a data transmission system wherein data are transferred between a control station and a plurality of tributary stations under the control of the control station, the tributary stations are...
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4679192 |
Arrangement for transmitting digital data
For the orderly transmission of digital data between stations S 1 -S n connected to a common communication path B, it is useful to provide an access and addressing procedure. According to the...
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4675668 |
Data transmission system over building wiring
A data transmission method over building wiring includes a plurality of transmission sections. One of these sections is selected from the plurality of transmission sections to be a data...
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4672602 |
Control and routing system
A telemetry system connects with a telephone system for communication of data via subscriber telephone lines to a provider of data services. Connection of multiplexing circuitry to a set of...
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4667193 |
Addressing system for simultaneously polling plural remote stations
In a contention polling arrangement wherein polling messages are transmitted by a central controller for simultaneously polling a group of remote stations, the polling message contains an address...
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4667191 |
Serial link communications protocol
An optimized method of bus contention comprising monitoring the bus for an idle or busy bus condition and either attempting an asynchronous bus access if the bus is idle or synchronously attempting...
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4667323 |
Industrialized token passing network
A communications network is comprised of two or more stations which share mastership of the network by passing a token between them. While a station holds the token it may send low or high priority...
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4661951 |
Communication network in which at least one station comprises a determination-type message filtering device
Device for determination-type filtering of messages at the input of a station is connected to a communication network. A preferred embodiment of the device comprises a read/write memory which can...
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4661950 |
Information transmission system in a local area network suitable for collision detection
An information transmission system in which a plurality of data terminal equipments (DTEs) are coupled with a communication medium through corresponding medium attachment units (MAUs). The DTE...
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4660141 |
Self configuring computer network with automatic bus exchange of module identification numbers and processor assigned module numbers
In a computer network having a system bus, a system processor connected to the system bus, and a plurality of local processors each connected to a respective local bus each having a plurality of...
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4654654 |
Data network acknowledgement arrangement
A method and apparatus for flexibly interconnecting the nodes of a local data network to achieve reliable internodal data transmission while minimizing the extra data processing load on the host...
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4654656 |
Off-line notification and communication network
The present invention relates to improvements in communication procedures, especially in networks which include at least one device which is capable of being manually switched to an off-line...
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H000241 |
Programmable telemetry word selector
A programmable telemetry word selector includes a scanning memory storing, or each of a number of analog outputs of the selector, a variable identifying tag and a data conversion code for the...
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4646358 |
Signaling arrangement for two-way radio communication
A radio transceiver includes a read only memory (ROM) for storing an origination code and a random access memory (RAM) for storing a destination code. The destination code may be manually entered...
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4644532 |
Automatic update of topology in a hybrid network
The disclosure provides improvements in effecting the routing function in a communication network operating under a distributed control protocol. Selected nodes (control nodes) have extended memory...
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4644351 |
Two way personal message system with extended coverage
A communications system for carrying messages via a radio channel between one central site of a plurality of central sites and a plurality of two-way remote data units is disclosed. Each central...
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4638313 |
Addressing for a multipoint communication system for patient monitoring
A method for dynamically assigning addresses to new modules as they are coupled to a communication system with a synchronous data link control (SDLC) bus is described. These modules communicate...
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4638298 |
Communication system having message repeating terminals
A system is provided for communicating between terminal units joined on a power distribution network. The terminal units in the system are capable of interfacing with external devices to which they...
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4638475 |
Router unit and routing network for determining an output port by detecting a part of an input packet
In a router unit (20) for use in supplying an input packet (PI) from an input port (I) to an output port (O) with reference to a destination bit series included in the input packet, each input...
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4636790 |
Addressable port telemetry system
An improved telemetry system for transferring data signals to and from a plurality of serially-connected, addressable data ports. The telemetry system includes a plurality of serially-connected...
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4636791 |
Data signalling system
A data signalling system for transmitting signals between at least one primary station and a plurality of secondary stations. The system is well adapted for use in multiple unit radio...
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4633247 |
Remote control system for selectively activating and inactivating equipment
Sixteen bit messages for selectively controlling receivers either to switch on an apparatus or to switch that apparatus off are transmitted on a format in which sixteen zeros are first transmitted,...
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4631534 |
Distributed packet switching system
A distributed packet switching system in which a centralized switch is not used and, instead, each transmitting port contains the intelligence required to derive and then insert the destination...
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4628315 |
Addressable transducer with improved address signal processing
An addressable transducer is disclosed for use in a monitoring system of the type including a central station and multiple addressable transducers for monitoring physical conditions. The transducer...
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4626846 |
Bus arrangement for addressing equipment units and a method therefor
A bus arrangement for providing equipment units with an address is disclosed. Each individual equipment unit achieves its address automatically according to its relative physical position within...
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4627048 |
Routing address bit selection in a packet switching network
A multi-stage packet switching network (100) includes a plurality of packet switching nodes (110) each included in one stage of a sequence of stages (101, 102, 103) of the network. Each node...
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4626847 |
Remote control transmitter system
A hand-held remote control transmitter for controlling a plurality of functions in a number of different devices includes a matrix keyboard comprising keys operating two independent switches with a...
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4621261 |
System for making a thermo-active device temperature dependent
A system for making a device temperature dependent whose operation is dependent on the local heating applied to a thermo-active material layer. The invention uses the heating electrodes of the...
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4613861 |
Processing system having distributed radiated emissions
A processing system (10) includes a backplane bus (13) that defines a plurality of locations (20-31) implemented as backplane slots each for connecting any option module (41) thereto. Each slot...
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4608561 |
Time division multiplexing load control system having manual switch for directly controlling loads
A time division multiplexing load control system having a central controller unit for controlling individual terminal units to connect and disconnect loads connected respectively thereto and manual...
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4608562 |
Address personalization of a remotely attached device
In a data transmission system comprising of a transmitting unit, a plurality of remote devices, and one or more serial communication links interconnecting the devices to the transmitting unit the...
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4607289 |
Facsimile transceiver capable of storing and relaying data
A facsimile transceiver having a data storing and relaying function in which facsimile data transmitted thereto from a remote facsimile station is stored for a moment and then transmitted to a...
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