Matches 1 - 45 out of 45
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7366123 Power source based sleep mode  
A device and method to allocate a secondary power supply to a Fiber-to-the-Home subscriber is disclosed. The present invention employs methods to selectively accept or rejects packets in order to...
7363400 Data transfer switch  
When the capacity availability of buffer memory provided to an output port of a frame to be transferred is exceeding a predetermined value, a crossbar switch is used for path change of the frame....
7219174 Inter-demux communication through a point to point interface  
A method and apparatus in which a plurality of demux processors propagates respective received sample streams to adjacent demux processors via an inter-demux bus; and wherein a final one of the...
7188292 Data mirroring system  
Hitless Switching provides a method of delivering data to a remote point in a reliable fashion. However, no guarantee or acknowledgement is provided that data has been written to a remote storage...
6697364 Statistical multiplexing in a telecommunications network  
A method carries out statistical multiplexing in a telecommunications network comprising a transmitting unit for transferring channels containing information from at least two traffic sources, a...
6161207 Communications unit and method of communicating having efficient packet acknowledgement  
A communications unit (10) with a packet subdivider operable on a data packet (200) and an error detecting code generator. An acknowledgement message (NAK) is generated including error detecting...
6098124 Arbiter for transferring largest accumulated data block output from data buffers over serial bus  
An improved system and method for transferring data over a serial bus. Incoming data is stored into data buffers with a dynamically variable size. The size of each data buffer may be adjusted as...
5793949 Information processing unit, device and method  
There is provided an information processing device having information processing units between which data can be transferred via a bus provided therebetween. A data requested unit which is one of...
5479403 Communication apparatus  
A data communication apparatus includes a transmitter that is operable in either a memory transmission mode, wherein data converted by a data converter is transmitted to a destination, or in...
5349654 Fault tolerant data exchange unit  
A data exchange system for use in a system that includes a plurality of redundant channels (12). A data exchange unit (30) is provided to process data, ensuring that consistent data are used by...
5343480 System for detecting loss of message  
A system and method for detecting a loss of a message transmitted between first and second address spaces of a computer system. The system includes a first sequence number adding part adding a...
5235595 Packet switching  
This invention is concerned with packet switching techniques, protocols, networks, and equipment for use on a local area or wide area scale. Packets which include a fixed-length data field and...
5224105 Transfer of data without loss over a noisy channel  
A system is provided for communicating high bandwidth data from a remotely operated semi-submersible vehicle to a mothership surface vessel. The data transmitted from the remotely operated vehicle...
5153876 Communication protocol for statistical data multiplexers arranged in a wide area network  
A network topography and associated protocol for exchanging data and control information between stations arranged in a daisy-chain wide-area-network (WAN) and a local-area-network (LAN). The...
4920534 System for controllably eliminating bits from packet information field based on indicator in header and amount of data in packet buffer  
Buffer memory overflow control is realized by controlling the amount of packet data being inputted to the buffer memory in response to the amount of packet data stored in the buffer memory....
4887269 Apparatus for the reception of radio broadcasted digital signals  
Digital characters are broadcast by grouping the characters into a series of blocks, and providing each block with a synchronization character and an identifying prefix to form a digital package....
4839640 Access control system having centralized/distributed control  
The access control system according to the present invention provides for the centralized control of the system operating parameters, including all times, access codes, alarms, error messages, and...
4833671 DTDM multiplexing circuitry  
A multiplexer for multiplexing a plurality of relatively sparsely occupied DTDM bit streams into a single more densely occupied DTDM bit stream at the same bit rate is disclosed. The multiplexer...
4730348 Adaptive data compression system  
A data compression system for increasing the speed of data transmission system over a communication channel with a predefined data transmission rate. The system has two data compression units--one...
4727537 Flow control arrangement for the transmission of data packets to a communication network  
A data transmission flow control arrangement for controlling the flow of data packets to a network as tramsmitted by one or more data transmitting and receiving devices via an interface is...
4710956 Cable television system  
A cable television system and method in which each subscriber's converter is located outside the subscriber's premises in an external control unit ("ECU") which also includes several other...
4700184 One-way data packet transmission system for processing data arranged in groups  
A field of useful data is split into a number of basic entities, called "data groups". Each data group is, in turn, split into smaller basic entities or "data blocks". Each resulting data block is...
4684980 System for controlling communications on a cable television network  
A system for controlling a cable television network includes a headend, a plurality of addressable external control units having subscriber converters located off the subscribers' premises, and one...
4673976 Cable television system data verification apparatus  
In a cable television system in which the individual subscriber's converter/tuner is located outside the subscriber's premises in an external control unit ("ECU") and controlled remotely via a...
4644472 Flow control between a data terminal and a host computer system  
A host computer system allowing the utilization of designated characters as flow control characters and also the utilization of the same designated characters as ordinary data. During the transfer...
4641263 Controller system or emulating local parallel minicomputer/printer interface and transferring serial data to remote line printer  
A remote line printer system is used for printing on a line-by-line printer at a remote location. Data stored in a minicomputer and fed in parallel format from a print port. The minicomputer, which...
4592012 Method of interfacing peripheral devices with a central processor  
A method of interfacing peripheral digital information gathering devices with a computer includes the positioning of an interface module with each peripheral device and obtaining information...
4584684 Data transmission method  
A data transmission method in which a signal receiving side produces a response code for requesting a text in response to a start request made by a signal transmitting side, and produces an...
4554660 One-way data transmission system  
According to this invention, a field of useful data is split into a number of basic entities, called "data groups". Each data group is, in turn, split into smaller basic entities or "data blocks"....
4527268 Structure of an access point toward a data pack broadcasting network  
The structure of an access point to a data packet broadcasting network comprises a plurality of couplers (Cx), a buffer memory (MTP) and a central control unit (MPC) interconnected by a main bus...
4497041 Parallel serial controller  
A computer-peripheral interface includes a latch to receive parallel data from a peripheral, such as a cash register, with a hardware mask to reject irrelevant data, a simple FIFO memory and a...
4472787 System for transferring words on a bus with capability to intermix first attempts and retrys  
A system is disclosed for transferring words from an input source to a computer bus which can issue an acknowledge or a negative acknowledge signal. The system includes registers for storing the...
4460993 Automatic framing in time division multiplexer  
A method and apparatus are described for automatically generating the frame that is used in a bit-interleaved time division multiplexer (TDM). The apparatus comprises a microprocessor, two random...
EP0106714A1 Access point structure for a data packet broadcasting network.  
Abstract not available for EP0106714 Abstract of corresponding document: US4527268 The structure of an access point to a data packet broadcasting network comprises a plurality of couplers (Cx), a...
4445213 Communication line interface for controlling data information having differing transmission characteristics  
There is disclosed an office communication system adapted to handle both bursty and continuous data transmission over a single transmission facility to a central switching network. A programmable...
4429382 Microprocessor multiplexer method and apparatus for bisynchronous data  
A microprocessor-controlled method and apparatus for handling transfer of data in bisynchronous protocol between a data source and a data transmission link. The apparatus responds to particular...
4410983 Distributed industrial control system with remote stations taking turns supervising communications link between the remote stations  
A control system for controlling an industrial process includes a plurality of remotely located process control units (remotes) each coupled to an associated input/output device(s) and adapted to...
4390947 Serial line communication system  
A serial line communication system is provided whereby a plurality of remote units are tied to a central site through a serial communication line. Each remote unit is provided with an automatic bit...
EP0078185A2 Broadcasted data packet receiver.  
Abstract not available for EP0078185 Abstract of corresponding document: US4554660 According to this invention, a field of useful data is split into a number of basic entities, called "data...
EP0077712A1 Data broadcasting system  
4377862 Method of error control in asynchronous communications  
Error control, in the form of a modulo 2 division remainder checksum is added to a packet of reformatted asynchronous characters prior to transmission over a data link connecting two data devices...
4324000 Termination circuit for FDM/TDM processors  
An interface circuit is provided to convert serial, 30 channel, compressed, sign magnitude FDM-PCM data provided by a pair of voice communication codecs (code/decode) into parallel, 60 channel,...
4304001 Industrial control system with interconnected remotely located computer control units  
A control system for controlling an industrial process includes a plurality of remotely located process control units (remotes) each coupled to an associated input/output device(s) and adapted to...
4270205 Serial line communication system  
A serial line communication system is provided whereby a plurality of remote units are tied to a central site through a serial communication line. Each remote unit is provided with an automatic bit...
4187394 High-speed data link for moderate distances and noisy environments  
A full duplex, high-speed data link comprising identical modules at each site for communication over coaxial cables, each module having a DFM transmitter with an FIFO data buffer for data from a...
Matches 1 - 45 out of 45