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5949792 |
Method and apparatus for encoding a digital signal, recording medium used for storing the digital signal, and method and apparatus for transmitting the digital signal
A method for encoding a digital signal which is free from overflow and/or underflow of decoder buffer when video and audio data are reproduced while switching a plurality of bit streams from one to...
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5940401 |
Carrier extension for gigabit/second ethernet networks operable up to at least 200 m distances
Transmission rates of 1 Gb/sec. at up to at least 200 m diameter distances are achieved in an Ethernet environment by functionally decoupling frame size to network roundtrip time. This decoupling...
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5936948 |
System and method of multiplexing digitized calls on intersystem transmission circuits in a radio telecommunications network
A system and method of multiplexing a plurality of digitized data and packetized voice calls on an intersystem transmission circuit in a radio telecommunication system having a plurality of mobile...
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5920564 |
Method and apparatus for direct memory access on transmit complete
A method and apparatus are provided for processing data transmissions across data communications networks including ATM networks, for example, to support arbitrary user action on transmit...
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5917823 |
X.25 access to frame relay network
A packet switching network supporting X-series protocol access employs PVC (Permanent virtual connection) trunks as the backbone trunks for the network.
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5910954 |
Network switch
A network having at least one emulated local area network (LAN) therein includes groups of legacy LAN workstations, network switches and an ATM switch. The network switches are each connectable to...
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5900957 |
Optical packet-switched transmission network
In an optical packet-switched network provided with one or more nodes (1), a transmitter (6, 17) transmits polarized packet signals (P) over optical connections (4, 5). A polarized packet signal...
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5896386 |
Queue management method for wireless asynchronous transfer mode network interface card
A queue management method for a wireless asynchronous transfer mode Network Interface Card (NIC) for integrating computers and other electronic equipment to a Wireless Asynchronous Transfer Mode...
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5892770 |
Process for converting digital data streams having an ATM cell structure
A first data stream for a first data transmission system having a first data rate contains ATM data cells and structural data, which are distributed as spaced apart data in accordance with a...
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5875178 |
Digital signal organized in self-contained data containers, especially for data transmission to selective call receivers
A digital signal to be received by a plurality of receivers, particularly restricted-range receivers, and divided into signal frames of which at least some include both a main data channel...
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5857072 |
System and method for distributing data simultaneously to multiple computers on a network, with advanced notice to intended recipients
A system and method for distributing data to multiple computer locations associated with a computer network determines which of the multiple network computer locations are to receive a data...
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5848072 |
Method of and apparatus for communicating messages
A data-transmission system (100) including a master device (101) and at least one slave device (105) communicates messages having an address (1503, 1505) and data (1100) from the slave device (105)...
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5841764 |
Method and apparatus for permitting a radio to originate and receive data messages in a data communications network
In a packet-based communications system where each packet includes a header and an associated data portion, message packets are communicated between entities on a radio communications network...
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5822321 |
Minicell segmentation and reassembly
In a telecommunication system that uses asynchronous transfer mode (ATM) with the ATM adaption layer (AALm) protocol as a data transfer infrastructure, a method and apparatus for segmenting and...
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5815503 |
Digital simultaneous voice and data mode switching control
The voice over data component of a personal communications system enables the operator to simultaneously transmit voice and data communication to a remote site. This voice over data function...
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5812554 |
Efficiency of a network having a minimum data transmission time
Efficient communication in a network having a minimum data transmission time interval wherein a data packet is transmitted beginning at a start of the minimum data transmission time interval. An...
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5802048 |
Method and apparatus for accelerating arbitration in a serial bus by detection of acknowledge packets
Methods and circuitry for arbitrating for control of a serial bus are described. According to one embodiment, one or more nodes of a serial bus are provided with a mechanism for discriminating...
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5796736 |
ATM network topology auto discovery method
A network topology discovery method automatically recognizes the physical connection relationships of each ATM switch and each ATM terminal within an ATM network. Each ATM switch and ATM terminal...
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5793756 |
Method and apparatus for organizing and recovering information communicated in a radio communication system
A system controller (102) generates and transmits a radio signal having long messages in data frames (370), and short and long messages in control frames (360). A set of selective call radio...
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5793767 |
ATM communication device and ATM communication network system with terminal devices having uniquely assigned virtual channel identifiers
An asynchronous transfer mode (ATM) communication network system is constructed by connecting a plurality of ATM terminal communication devices to each other through connections. Each ATM terminal...
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5790554 |
Method and apparatus for processing data packets in a network
A method and apparatus for filtering data packets from a network device, such as a LAN switch, onto a network coupled thereto based on the content of the data packets. A pattern is defined and a...
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5790544 |
ATM cell-to-frame reassembly method and apparatus for overrun avoidance
An ATM cell-to-frame reassembly method and apparatus are provided for overrun avoidance. For each END ATM USER connection a value defining a maximum number of ATM cells is provided. After receiving...
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5784362 |
Temporary frame identification for ARQ in a reservation-slotted-ALOHA type of protocol
Automatic repeat request (ARQ) functionality in a cellular mobile packet data communication system using a reservation slotted-ALOHA protocol is provided by assigning a temporary frame identity...
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5784277 |
Real-time audio packet layer encoder
A packet encoder includes various sources of data, a state machine and additional circuitry. The state machine provides an S-bit output signal. N of the output bits of the state machine, (N<S),...
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5781598 |
System and method of asynchronous data transfer through a plurality of modems
A system and method are disclosed for asynchronously transmitting data from an originating system to a receiving system over first and second channels. The system determines an originating data...
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5781552 |
Automatic address setter capable of determining a network address of a host station
In a method of determining an assigned network address of a host station connected to a local area network, a predetermined routing information signal, such as an RIP packet, which is periodically...
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5781554 |
Method and apparatus for communicating between nodes in a communications network
A method and apparatus for communicating over a communications network includes determining a time delay between transmission and reception of data block between nodes in the network and...
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5764645 |
IP/ATM network adaptation
A digital communications network comprises a plurality of network hosts connected to communicate using an ATM network. Each network host uses policies (configured by the network administrator) to...
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5754553 |
Packet conversion apparatus and system
A packet conversion apparatus includes a detector for detecting heads of transmission packet signals, a packetizer responsive to the detecting means for packetizing the transmission packet signals...
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5740448 |
Method and apparatus for exclusive access to shared data structures through index referenced buffers
A method and an apparatus for hardware and software interaction in data transfers of shared data structures in memory. The method and apparatus decreases the number of mutex lockings required to...
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5717689 |
Data link layer protocol for transport of ATM cells over a wireless link
The present invention is a reliable data link layer protocol to transport ATM cells over a wireless point-to-point link. The protocol ensures that the cells are transported reliably by use of a...
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5710766 |
Method and apparatus for sharing a common bandwidth between two protocols in a radio communication system
In a radio communication system a method and apparatus enables sharing a bandwidth between two protocols that can support different maximum numbers of subchannels (510-516, 602-614) in the...
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5703878 |
Method of transferring structured data of constant bit rate traffic in an ATM network
A method and an apparatus for transferring structured data of a constant bit rate traffic in an ATM network. The method uses the recurrence of alignment of the structured data field of length N in...
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5691984 |
Compact, adaptable brouting switch
The compact brouting switch allows communication between external systems with differing or same protocols. The compact brouting switch includes switch ports which receive and transfer data between...
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5675642 |
Variable length data switch and a variable length data relaying method using the variable length data switch
A variable length data switch and a variable length data relaying method using the variable length data switch are suited for accommodating an ATM-LAN or the like in a frame relay switch as the...
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5671223 |
Multichannel HDLC framing/deframing machine
A high speed multichannel HDLC framing machine (112) cycles through Time Division Multiplexed (TDM) channels identifying a channel table (188) for each channel. HDLC state, data to be framed, and a...
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5640400 |
Mutual connecting apparatus between networks
A gateway as one example of a mutual connecting appraratus between networks virtually provides an address of a mini manufacturing automation protocol (miniMAP) device to a mechatronics network...
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5638367 |
Apparatus and method for data packing through addition
A scalable packing circuit used to byte pack data transferred from a first storage element to a second storage element. The packing circuitry comprises a word packing circuit which receives data...
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5629940 |
Transmitting and receiving long messages in a wireless one-way communication system while reserving selected slots for short messages
A receiver operates in both a first polling protocol and in a selectable data acquisition protocol to both conserve power while quickly read long messages in wireless one-way communication systems....
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5629935 |
Signal multiplexing apparatus using multiconnection
A signal multiplexing apparatus using multiconnection, comprising an input signal interface circuit for inputting a DS1 (or DS1E) signal, a video signal and an ATM cell signal, an input signal...
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5617419 |
Adapting switch port and work station communication adapters to data frame types with disparate formats and data rates
This invention relates to "clear pipe" communication networks meaning the nodes and links handle a variety of data frame types depending on their communication protocols such as Token Ring,...
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5615211 |
Time division multiplexed backplane with packet mode capability
An integrated TDM-based/packet-based telecommunications backplane system includes a multi-bit backplane bus, a plurality of TDM data modules and packet based data modules coupled to the backplane...
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5608730 |
Bi-directional communication system
There is disclosed a communication system using a bi-directional bus, which includes a plurality of devices (e.g., TV image receiver or video tape recorder, etc.) connected to each other. Each...
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5602853 |
Method and apparatus for segmentation and reassembly of ATM packets using only dynamic ram as local memory for the reassembly process
An Asynchronous Transfer Mode (ATM) network adapter having a receiver portion, the receiver portion capable of receiving a first plurality of ATM cells and assembling the first plurality of ATM...
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5603064 |
Channel module for a fiber optic switch with bit sliced memory architecture for data frame storage
A channel module has an interchangeable port intelligence system at a front end which is connected to a memory interface system at a back end. Each port intelligence system provides one or more...
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5602849 |
Communication bus system and station for use in such system
A multistation single-channel communication bus system accommodating master stations and slave stations, with any master performing arbitration, arbitration outcome detection, and, upon winning the...
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5598581 |
Variable latency cut through bridge for forwarding packets in response to user's manual adjustment of variable latency threshold point while the bridge is operating
A variable latency cut through bridge (210) for selectively forwarding data packets (10) within a network (310) of computers (312), the variable latency cut through bridge (210) employing a...
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5594728 |
Realtime addressing for high speed serial bit stream
The invention includes indirect addressing which is the realtime calculation of the location of variably offset fields in a frame in a high speed medium. Data frames in a communication medium,...
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5592468 |
Wireless local area network system with improved transfer efficiency and data transfer method for same
A pair of stations are associated with each other so that a data frame is transmittable from either to the other, the data frame including as basic fields thereof a header field, a data field with...
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5592486 |
System and method for efficiently monitoring information in a network having a plurality of repeaters
A method and apparatus for efficiently transferring a data packet on a network. The efficient transfer of data includes compressing the data as the data packet is transmitted from a repeater to a...
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