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5559503 Communications device for initializing terminals in a signal distribution system  
Signal distribution systems, such as interactive cable television systems, wherein a central server that communicates with remote terminals wherein the server assigns a specific address to each...
5559803 Communication system using a bidirectional tree structure network  
A communication system includes a bidirectional tree network having a base end and a plurality of terminating ends, a central apparatus connected to the base end, a plurality of terminating...
5557612 Method and apparatus for establishing communication in a multi-tone data transmission system  
Apparatus and methods for informing the central unit of the transmission requirements of a remote unit in a bi-directional data transmission system that facilitates communications between a...
5555543 Crossbar switch apparatus and protocol  
A computer networking system includes a cross bar switch and a protocol for operating the same. The crossbar switch typically connects a plurality of ports one to another and the protocol...
5550830 Multiplex transmission apparatus and method  
The number of control nodes, of a plurality of control nodes distributed/connected to a common multiplex transmission path, which can exchange data with each other, is counted and data...
5530701 Network link controller  
A link controller for use in a node of a network includes a digital controller (102) that employs a knowledge-based control program (103). The device and method provide flexible master node...
5523748 Method and apparatus for interrupting communication control units in an exclusive mode  
A communication control method in which a communication control unit A2 in an exclusive communication mode with a communication control unit A1 receives a requesting frame of an exclusive...
5524107 Multiport multidrop digital system  
A polled digital multiport, multidrop system is described. The inbound frame for sending information from remote terminals to the host terminals is arranged such that a plurality of bytes are...
5519709 Two priority fair distribution round robin protocol for a network having cascaded hubs  
A two priority protocol is provided for selecting end nodes to send network packets over a network. Network packets are, for example, high priority network packets or normal priority network...
5517502 Upstream transmission using multiple transmission tags and downstream acknowledgements in conditional access packets  
Upstream transmissions in a two-way communications network are effected from subscriber terminals in upstream packets having one of a plurality of different separately acknowledgeable...
5500852 Method and apparatus for network variable aliasing  
A method and apparatus for resolving connection conflicts in a network is provide. A network connection point on a node cannot be added to a first network connection when it already belongs to a...
5488693 Protocol with control bits and bytes for controlling the order of communications between a master processor and plural slave processors  
A protocol controls communications between a master unit and a plurality (M) of slave units connected thereto. The master unit sends a downlink message over a first communication path to the M...
5481750 Process for allocating addresses to newly connected apparatus in a domestic network controlled by a master controller  
The process uses the technique of carrier currents between the emitter-receivers (2, 3 . .) called slaves comprising each a microcontroller (4, 5 . .), and a master controller (6) comprising a...
5479407 Channel utilization method and system for ISDN  
An ISDN gateway (GW, 100) dynamically allocates bandwidth by monitoring traffic at each destination queue and in response allocating or deallocating virtual B-channels. A long term allocation...
5473642 Data communication using single logical link for broadcast session  
In a data communication system having a sending station and multiple receiving stations interconnected by a satellite or a local area network, the sending station transmits a request signal...
5457560 Fiber optic telecommunication system employing continuous downlink, burst uplink transmission format with preset uplink guard band  
A fiber optic telecommunication system has master site linked to a plurality of subscriber interface sites by a single pair of optical fibers. Downlink messages are transmitted in a continuous TDM...
5457688 Signal processor having multiple paralleled data acquisition channels and an arbitration unit for extracting formatted data therefrom for transmission  
A system for acquiring data from a plurality of analog signal sources inces a multiple-channel asynchronously operating first-stage subsystem each channel of which outputs composite digital...
5457689 High speed polling protocol for multiple node network with sequential flooding of a polling message and a poll-answering message  
The invention is a multiple interconnected network of intelligent message-repeating remote nodes which employs a remote node polling process performed by a master node by transmitting a polling...
5452302 Protocol for asynchronous character communication  
A first module (10) sends a message comprising a plurality of data characters to a second module (20) provided, however, that upon sending an individual data character, the first module waits to...
5444704 Dial restoral method and apparatus  
In a multidrop data communication system operating at a first bit rate using the High-Level Data Link Control (HDLC) protocol, dial restoral of communications with a particular tributary at a...
5434865 Protocol for multiple node network  
The invention is a multiple interconnected network of intelligent message-repeating remote nodes which employs an antibody recognition message termination process performed by all remote nodes and...
5434861 Deterministic timed bus access method  
An improved timed deterministic bus access method and system for a bidirectional linear bus, a unidirectional linear bus, a star and a tree type of bus structure. The method employs a master...
5422631 Apparatus and method for interconnecting electronic products  
A switching network including a plurality of nodes, one node connected to a product of different electronic product groups on display. Each node includes a satellite node microprocessor and a...
5422880 Broadband switching fabric in a communication controller  
A method and apparatus for exchanging communication cells in a communication controller, wherein an arbiter determines transmission requests for each of a plurality of communication modules in the...
5416777 High speed polling protocol for multiple node network  
The invention is a multiple interconnected network of intelligent message-repeating remote nodes which employs a remote node polling process performed by a master node by transmitting a polling...
5414858 System and method for dynamically varying between interrupt and polling to service requests of computer peripherals  
A system and method for managing service requests from peripherals connected to a personal computer or workstation by operating both in an interrupt mode and a polling mode, with selective...
5408468 Queueing system for switches having fast circuit properties  
A digital switch serves a number of terminal units for switching signal traffic therebetween, the traffic being logically divided into data time slots and control time slots with control packets....
5371739 Sequential polling bus access method for radio communication systems  
A radio communication system (600) having at least two radio interface devices (602) requires an access protocol for accessing a common information bus (605). The bus (605) is necessary for...
5365512 Multisite trunked RF communication system with reliable control messaging network  
A distributed switching network (switch) routes audio and control signals throughout the switch from various audio sources to one or more audio destinations. Audio sources such as mobile/portable...
5335221 Integrity mapping in data communication system  
A device for communicating with other devices over a communication system is disclosed which has the capability of being a segment reporter and if it is not a segment reporter, of determining when...
5329525 System and method applicable to automotive vehicles utilizing time division multiplex mode for communicating data between master and slave stations  
A time division multiplex communication system applicable to an automotive vehicle and a method for communicating data between a master station and a plurality of slave stations are disclosed in...
5323393 Method and apparatus for obtaining and for controlling the status of a networked peripheral  
Method and apparatus for controlling the same functions of a networked printer that can be manually selected from the front panel of the printer, but remotely through an interactive network board...
5319488 Terminal equipment and optical communication system using the same  
A terminal equipment is connected in a first optical network and connected, via a conductive path, to a predetermined one of a plurality of communication devices connected in a second optical...
5311505 Method and device for multiplexing  
The invention concerns a method for transferring data from a plurality of serial channels (1-6) on a parallel channel. To each serial channel is associated a buffer memory in which are stored the...
5291489 Interprocessor switching network  
A message transport network (10) is provided for high speed switching between processing elements (72, 80). Clusters of low speed processing elements (72) may be connected to the message transport...
5274841 Methods for polling mobile users in a multiple cell wireless network  
A method for communicating information bidirectionally between a wired network (1) and a wireless network. The wireless network is of the type that includes header stations (12) each having a...
5227778 Service name to network address translation in communications network  
A data communications network having a number of servers and a number of service providers employs an improved protocol for translating service names to network addresses. A server sends a...
5224097 Data communication system  
A data communication system which can eliminate the need for repeating equipment therein system, and allowing coexistence of an analog line and a digital line. The system also prevents generating...
5224095 Network control system and method  
A network control system for use in a communication network controls the receipt and transmission of messages between at least a pair of nodes of the network. Messages conveyed within the network...
5210530 Network management interface with internal DSD  
Apparatus for interfacing a network manager to a network of communication devices over a single communications channel of a plurality of signals is disclosed. Each communication device of the...
5202882 Method for checking transmission properties of a subscriber line circuit  
Given the prerequisite of a division of a subscriber line circuit into a high-voltage portion and a signal processor that defines the transmission-oriented properties, voltages arising at...
5185737 Method and apparatus for cyclic reservation multiple access in a communications system  
In a communications network comprising two counterflowing busses (folded bus or dual bus) and a number of stations (N1, N2, N3) connected between them, a cyclic reservation and access technique is...
5182744 Telecommunications network restoration architecture  
A restoration system is provided for enhancing the reliability of a telecommunications network such that particular traffic which is disrupted by, for example, a faulty link, may be quickly...
5177739 Multiport - multipoint digital data service  
In a Digital Data System (DDS) a method and apparatus for providing multipoint multiport service. Differences in time delays through the network are compensated by an alignment training wherein...
5170394 Host network communication with transparent connection devices  
A packet switched network has a system for providing an end-to-end connection for a communication or data transfer session between a host processor and a transparent connection device, which may...
5166675 Communication system carrying out polling for request and data simultaneously and in parallel  
A communication system containing a master station and a plurality of slave stations. The master station receives a request from one of the plurality of slave stations and memorizes one or more...
5161151 System and method for controlling multiplex communications between master station and slave stations  
A system and method for controlling multiplex communication between a master station and a plurality of slave stations, in which a predetermined signal (dummy signal) is transmitted to the...
5150114 Polling-type information transmission system  
A transmission system comprising an interrogator (1) and a number of transponders (2). The transponders (2) communicate with the interrogator (1) by means of individual addresses for reading...
5142532 Communication system  
A bidirectional broadband and telephony network is controllable from an exchange or head end of the network. An optical fiber (16 ) carries the telephone services to customers' premises (30, 31)...
5132680 Polling communication system with priority control  
A communication system including a master station, a plurality of slave stations each for communicating with the master station, a two-way transmission line connecting the master station and the...