Abstract: A communication system, network interface and communication port is provided that includes a media local bus. The local bus is connected between a controller and one or more multimedia devices located within a node of the communication system. The controller periodically broadcasts sync signals to the source device, or devices, to synchronize data transmission partitioned into time slots. Each time slot represents is dedicated to a particular data type. Thus, time slot 1 can accommodate packetized data, time slot 2 can accommodate synchronous data, time slot 3 can accommodate control data, and time slot 4 can accommodate isochronous data. Various combinations and variations of those time slots can occur where fewer than four data types can be present within a frame or all four data types can be present. The local bus includes a signal line and one or more data lines.

Abstract: A dual-axis RAID system includes a plurality of X-axis ordinal series of disks, configured to store parity data and a tape drive, and a Y-axis ordinal series of parity disks. The Y-axis series is smaller than the X-axis series, because the X-axis series contains an extra disk configured as a segment journal disk. The RAID system communicates with clients on a network a network via an SCI network interface.

Abstract: A computer system comprises a plurality of modules and a shift register having a plurality of slots connected in series, wherein each of the plurality of slots is coupled to one of the plurality of modules. In one embodiment, an output of a last slot of the plurality of slots is coupled to an input of an initial slot of the plurality of slots to form a ring. Each slot of the shift register corresponds to a time slot on the ring, and each of the time slots is assigned to one of the modules. At least two of the modules are configured to independently generate frames for transmission on the ring. In another embodiment, at least one of the modules comprises a bridge module coupled to communicate with other bridge modules separate from the plurality of modules.

Abstract: A ring-mesh network architecture is provided for increasing the working/protection bandwidth ratio (W/PBR) of transport networks. The ring-mesh network has mesh connections between some nodes, the traffic on the mesh connections being unprotected. This increases the W/PBR from the current 1:2 value to (n?2)/(n?1), where n is the number of nodes, (n?1) is the number of connections on each node and (n?2) is the number of working connections on each node for one direction of traffic. Ring-mesh networks with add/drop multiplexers in the mesh connection are also provided.

Abstract: A distribution of location information in IP networks by intelligent endpoints is presented. The network comprises an intelligent endpoint operably coupled to a plurality of clients. A first one of the clients registers with the intelligent endpoint that stores location information of the first client. A second one of the clients may also register with the intelligent endpoint that stores the location information of the second client. The intelligent endpoint automatically presents the location information of the first client to the second client and of the second client to the first client. The first client can then directly communicate with the second client. Either client can also be an intelligent endpoint.

Abstract: A method and apparatus for a configuration ring is described. The method and apparatus include a configuration ring including a master, a first target, and a second target, the master coupled to the first target through a ring, the first target coupled to the second target through the ring, and the second target coupled to the master through the ring. The method and apparatus also include a method of using the configuration ring including originating a packet, passing the packet, decoding the packet, and utilizing the packet.

Abstract: The present invention provides a protection protocol for fault recovery, such as a ring wrap, for a network, such as a two line bi-directional ring network. An embodiment of the present invention works in conjunction with a ring topology network in which a node in the network can identify a problem with a connection between the node and a first neighbor. The present invention provides 1 protection protocol which simplifies the coordination required by the nodes in a ring network. The nodes do not need to maintain a topology map of the ring, identifying and locating each node on the ring, for effective protection. Additionally, independently operating ring networks can be merged and the protection protocol will appropriately remove a protection, such as a ring wrap, to allow the formation of a single ring.

Abstract: Methods and devices provide for remote management of a local computer by transferring screen frames produced by the local computer for viewing at a remote computer. A digital video signal from a local computer may be duplicated and scaled so that screen frame data corresponding to the screen frames produced by the local computer is passed through a network, such as the Internet, to the remote computer where the remote computer produces a display that contains the screen frames being transferred.

Abstract: A method for transmitting the time-critical data over Ethernet. The method can tolerate at least 50% of packet-drop without affecting the quality of transmission. Ethernet network is considered a connectionless network, so the packet-drop is not avoidable. Therefore, the key to transmitting the time-critical data over Ethernet is not to prevent the packet-drop, but to control and to tolerate the packet-drop. To tolerate the packet-drop, we have to carry redundant data in each Ethernet packet so that we can recover the lost information from the redundant data when packet-drop occurs. An easy way of carrying the redundant data is as follows. Every packet carries two parts of data. The first part is the required data, and the second part is the redundant data. The required data is the data that the packet is supposed to carry in the case without redundant data. The redundant data is the required data of the next packet.

Abstract: A method of determining redistribution of objects among three or more containers in a network comprises determining an initial set of objects in each of the containers, identifying neighboring pairs of containers, determining a cost of moving objects between each of the neighboring pairs of containers, determining a desired change in occupancy of each container, and subsequently determining a desired total size of a set of objects to be moved between each identified neighboring pair of containers by solving a set of simultaneous linear equations. The objects are redistributed among the neighboring pairs of containers in accordance with the solution. The objects may be clock sinks and the containers clock nets on a chip, or the objects may be circuits to be placed in an integrated circuit and the containers regions of the chip, or the objects may be data files and the containers individual network server computers.

Abstract: A bus switch system having an adapter, a first input and first output register in cascade connection on a data transferring bus of bus switch that comprise input and output shift registers. There is also a bridge, the second input and second output registers are in a cascade connection on the first data transferring bus form a shift register. This allows data to be transferred to an adjacent adapter at one clock cycle, thereby the data transfer is made faster. The data transfer on the first and second data transferring buses is conducted in one direction and input/output control is optimally conducted by first and second control means so that switch control in data transfer is made easier.

Abstract: A simple and effective pre-processing step to reduce the complexity of solving p-cycle network design problems involving pre-selecting candidate cycles based on their topological score (TS) and a priori efficiency (AE) is disclosed. The disclosure contains a case study that examines joint optimization of working routes with placement of p-cycles.

Abstract: A method for initializing a computing system comprising a plurality of devices which communicate on a communication link comprising a plurality of independent point-to-point links is provided, each of the point-to-point links interconnecting a respective pair of the plurality of devices. The method includes a link initialization procedure comprising initially configuring each respective pair of devices to communicate on the respective interconnecting link using common communication parameters, including a common frequency and a common link width. The link initialization procedure also may include an optimization procedure for determining maximum communication parameters for each interconnected pair of devices. If the maximum compatible parameters differ from the common parameters for any pair of devices, then the pair of devices may be reconfigured to communicate on the interconnecting link using the maximum compatible parameters.

Abstract: Disclosed is an information network system which comprises a plurality of functional appliances, a plurality of relaying appliances each provided with respect to its corresponding functional appliance, a data transfer path for enabling the relaying appliances to be communicated with each other, an operation part for selecting a desired one from among the functional appliances so as to select a desired function from among a plurality of functions of the selected functional appliance, and a command conversion part provided between a predetermined one of the functional appliances and the relaying appliance corresponding thereto and having a command conversion table having stored therein function commands corresponding to the functions of the functional appliances.

Abstract: The present invention describes a method for configuring a station connected to a field bus, wherein a logical address is allocated to said station. The method comprises the steps of: transmitting said logical address from an address-allocation unit to said station; transmitting a physical address from said address-allocation unit to said station, said physical address corresponding to an assumed physical position of said station relative to said field bus; verifying said physical address being transmitted to said station based on an actual physical position of said station relative to said field bus; and storing said transmitted logical address in a memory of said station depending on the verification of said physical address.

Abstract: A single-chassis clustered network system (10) having internal connectors (14) that eliminate the need for wiring out the back of the chassis. Each main board (11) has a network interface card (12), an internal connector (14), an external connector (13), and an autosense circuit (15). The autosense circuit (15) detects when the internal connectors (14) are being used, and disables the external connectors (13), or vice versa.

Abstract: The invention provides a communication apparatus easy for use. A CPU registers a nickname, a sub-address signal and a transfer address corresponding to a ring type multi-address transmission number, also registers a sub-address signal and a communication specification corresponding to a memory box, further select the start of a ring type multi-address transmission, enters a password signal, discriminates at the reception of a sub-address signal in data reception whether the ring type multi-address transmission is designated by such sub-address signal, and changes the handling of the password signal according to the result of such discrimination.

Abstract: A moving image network system which has high response to a moving image transmission request and prevents interruption of a moving image signal. Upon transmitting moving image data from terminal 1 to terminal 2, controller 20 adds a transmitter terminal address, priority and a coding type of the moving image data to transmission load information received by transmission load information receiver 17, and outputs the data to transmission load information transmitter 16. The controller 20 encodes/decodes moving image data in accordance with transmission load information of the moving image data and adjusts transmission data amount corresponding to transmission load of a transmission path.

Abstract: It is an object to provide a ring-shaped network which can speedily perform initialization even when a plurality of data transmission apparatuses, each performing multi-valued transmission while assigning one or more bits of data as one data symbol to a signal level, are connected thereto, and a data transmission apparatus.

Abstract: A communication method and a bus design for interconnecting a plurality of components in a ring configuration with segments of the bus chaining from one component to another so as to reduce the amount of global wiring between components. One of the components serves as a beginning and end of the ring and controls the operation of the bus by injecting command, address, and write data, at the beginning of the ring and gathering read data at the end of the ring. By chaining components, no bus signal needs to travel further than a single component-to-component hop in any bus cycle. The bus includes unidirectional signal lines that carry data objects and tags in one direction, and carry flow control in the opposite direction. Tags accompany each data object and determine how a component interprets the data object when received.

Abstract: A SCI controller manages responses and requests between SCI interconnection rings and memory access controllers. The SCI controller includes a request activation queue that stores information about the requests until the SCI rings have the resources to handle the requests. The controller also has a response activation queue that stores information about the responses until the memory access controller is accessible. The queues do not store the request and response packets, but rather store information that is used to construct the request and response packets. The SCI controller also has a contents addressable memory or CAM that checks for an address match between the current requests and responses and previous requests and responses. A table stores more specific information about the previous requests.

Abstract: The invention relates to a communicating system comprising a data terminal, a wireless communication device, and data transmission means for setting up a local data transmission connection between the data terminal and the wireless communication device. The data transmission means comprise a data transmission means of the data terminal and a data transmission means of the wireless communication device. The data terminal comprises means for running application software, an application software connection, means for controlling the data transmission means of the data terminal, and a first connection interface for data transmission between the application and the application programming interface. The data transmission system comprises also a data adapter, a second connection interface for data transmission between the application programming interface and the data adapter, and one or several media interfaces for data transmission between the data adapter and the data transmission means of the data terminal.

Abstract: A customer premises network includes a plurality of terminal adapters, which are interconnected by a double daisy chained bus, preferably an optical fiber bus. One bus is used in each data transmission, i.e., one bus for downstream transmission of data and the other bus for upstream transmission of data. Interconnecting the terminal adapters to form a daisy chain means that the transmitted data is regenerated at each terminal adapter. The customer premises network is preferably a home network or a small company network. It may also interface an access network via a network interface.

Abstract: A stackable network unit which can form a ring with other units has a master mode in which it can place packets on the ring, so that they can be ultimately forwarded from other units, and a repeat mode in which it can make a request for transfer of mastership of the ring, inserting bits in a header of an arbitration packet. If a master unit has completed the transmission of a packet and, preferably, after the required inter-packet gap has elapsed, it has not yet received an arbitration header to permit the making of an arbitration decision it can transmit a subsequent packet. The header information of this packet indicates to the other units that this subsequent packet is part of a burst of packets and the other units should not set requests in the header of this packet because this packet would not be used for arbitration.

Abstract: The invention is to provide a method for increasing the transmit and receive efficiency of an embedded Ethernet controller, which is applicable to an embedded Ethernet controller connected with a local area network and a wide area network respectively for handling packet processing by utilizing a direct memory access structure via an independent data bus, the said method includes the steps of mapping each said receive buffer into a plurality of fixed size packet storage spaces each providing individually separated memory spaces in four-byte alignment to store packet header, packet CRC and packet data, as well as mapping a surplus memory space from a preceding packet, such that it is only necessary to move and change the packet header in the receive packet and then insert a required protocol header into the said surplus memory space to convert the receive packet into a transmit packet.

Abstract: The present invention is directed to a system and method for establishing a point to multipoint communication network. Preferable, the point to multipoint communication network is established in the environment of a home of small office, and the invention is realized through a computer that may dynamically establish both LAN and WAN communications. Broadly, the system and method of the present invention are realized by a computer that is configured to assume a role as either a Master or a Slave on a LAN. If the computer is the first (or only) computer powered up on the LAN, then it assumes the role of Master. In this role, the computer establishes a communication link with a WAN (such as with an Internet Service Provider), and directs all WAN communications over the WAN, using a WAN frequency and protocol (such as DSL). As other computers join the LAN, then WAN communications from those computers are relayed through the Master to the WAN.

Abstract: A system, apparatus and method for transmitting data on a private network in blocks of data without using TCP/IP as a protocol are provided. When data is to be transmitted on a private network, the data is divided into a plurality of packets and a MAC header is added to each packet. The header contains hardware addresses of the transmitting and receiving hosts as well as parameters of the data being transmitted. The hardware addresses are used to route the packets through the private network therefore obviating the use of TCP/IP to perform the same task. The data is ordinarily stored in contiguous sectors of a storage device; thus, ensuring that almost every packet will either contain data from a block of sectors or is a receipt acknowledgement of such packet.

Abstract: Systems and methods are provided for network connected computing systems that employ functional multi-processing to optimize bandwidth utilization and accelerate system performance. In one embodiment, the network connected computing system may include a switch based computing system. The system may further include an asymmetric multi-processor system configured in a staged pipeline manner. The network connected computing system may be utilized in one embodiment as a network endpoint system that provides content delivery.

Abstract: A system and method for implementing a data link layer protocol (e.g., SRP) in a network node having multiple network interface circuits or devices. A single device driver may be executed to operate all of the network interface devices. Separate, interconnected device soft state data structures may be implemented for each network interface device. Link layer functionality (e.g., for encapsulating or receiving a packet) may be embedded in the device driver, thereby avoiding the need for a separate link layer Streams module. In an SRP network, the node periodically conducts a topology discovery process and generates a topology map (e.g., a doubly linked list) reflecting the results. A routing table indicating which ring to use for each other network node, depending on hop count, can then be constructed.

Abstract: A server transmits an open command which orders to open ports when data is transmitted to terminals. The open command is formed with a plurality of bits so as to have flags corresponding to each port of the terminals. Among a plurality of the bits, only the bits corresponding to the ports to be opened are set to be, for example, 1 and the rest is set to be, for example, 0. In each of the terminals, each of the receivers receives the open command, and judges whether the bits corresponding itself in the open command is, for example, 1 or not. When the bit is 1, the terminal opens the port.

Abstract: A backup CRF VLAN arrangement provides an alternate, redundant path for traffic between undistributed Concentrator Relay Functions (CRFs) located on separate switches interconnected by trunk links of a distributed token ring bridge. The backup CRF virtual local area network (VLAN) arrangement defines a backup network path which may be utilized if a primary active path is not a valid path to a backup network. Notably, the backup network comprises a special type of CRF that is distributed among the switches, but that has only one port active at any given time.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: The present invention discloses a multi-priority media access control method for a multi-channel slotted ring network. In the slotted ring networks, each node has one tunable transmitter and one fixed receiver for data channels, and is able to inspect slot status on all channels. The header slot format defines the slot priorities on ring networks and limits which packets can be transmitted through the slots. By assigning slot priority based on two thresholds to raise and lower slot priority, multiple priority packets can be transmitted.

Abstract: A Totem ring network (100) includes Totem rings (102, 104) which are geographically separated by relatively long distances. Time latencies between the geographically separated Totem rings (102, 104) are minimized by providing each Totem ring with a dedicated router (122, 132) located geographically proximate to a respective Totem ring. Each router (122, 132) is joined together through point-to-point links (106, 108), and each server (124, 126, 128, 132, 134, 136) on a local area network (120, 130) of a respective ring (102, 104) is joined to the respective Totem ring (102, 104) and router (122, 132).

Abstract: The invention relates to a local area network operating according to the asynchronous transfer mode (ATM) for transmitting cells, comprising a plurality of network interfaces. At least two ring systems are provided which comprise each two network interfaces (85, 89; 86, 90) and respective bridge connections (83, 84; 87, 88). A first network interface (85) of a first ring system and a first network interface (86) of a second ring system are coupled via first bridge connections (83, 84) to the two ring systems for transporting the cell stream to the two ring systems, and a second network interface (89) of the first ring system and a second network interface (90) of the second ring system are coupled via second bridge connections (87, 88) for transporting the cell stream to the two ring systems.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: An electronic control unit (ECU) and a tester are connected to exchange a CAN message through full duplex communication. A CAN communication control unit included in the ECU executes processings such as CAN message reception, response data generation, and CAN message transmission. A buffer management unit included in the ECU is equipped with a plurality of buffers that has uninterrupted ring address structure. The buffer stores reception and transmission data in common with a state sign. The state sign is attached by the CAN communication control unit to indicate a state currently executed in the buffer. The CAN communication control unit selects to use one of the buffers based on the state sign of the buffer when the reception of the request data or the transmission of the response data is executed.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: N shared data registers are provided for N+1 processors, respectively. For allowing all the processors to read the same data from the shared data registers, the processors are connected by interprocessor communication channels. The processors are classified into a master processor and subordinate processors. All data writing into the shared data registers are executed from the master processor. Further, data writing into the shared data registers from the subordinate processor is executed from the master processor after a write request is sent to the master processor.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.

Abstract: Systems and methods are provided for implementing: a rings architecture for communications and data handling systems; an enumeration process for automatically configuring the ring topology; automatic routing of messages through bridges; extending a ring topology to external devices; write-ahead functionality to promote efficiency; wait-till-reset operation resumption; in-vivo scan through rings topology; staggered clocking arrangement; and stray message detection and eradication. Other inventive elements conveyed include: an architectural overview of a packet processor; a programming model for a packet processor; an instruction pipeline for a packet processor; and use of a packet processor as a module on a rings-based architecture.