427 results about "Ethernet protocol" patented technology

Described is a process and system for providing an extensible forwarding plane data communications channel adapted to selectively support operations, administration and maintenance (OAM) activity within one or more different domains of an Ethernet transport network. The data communication channel is established using Ethernet protocol data units forwarded within the forwarding plane, between network elements. The Ethernet protocol data units can be Ethernet OAM frames modified to include an OpCode indicative of a maintenance communication channel. The OAM frames are generated at a selected one of the network elements (source), forwarded along the same network path as the Ethernet frames, and terminate at another network element (destination) associated with a maintenance level identified within the OAM frame. The source and destination network elements can reside on a domain boundary using the Ethernet OAM frames flowing therebetween to relay maintenance communications channel messages.

An interface module for use in a process monitoring and control system has an Ethernet port, a controller, and at least one segment I / O module. The Ethernet port is adapted to send and receive signals in an Ethernet protocol over a cable comprising a plurality of wires and to receive a voltage potential from at least one pair of the plurality of wires. The controller is coupled to the Ethernet port and powered from the received voltage potential. The at least one segment I / O module is coupled to the controller and is adapted to couple to an associated field device segment with at least one attached field device. The at least one segment I / O module is adapted to interact with the at least one attached field device on the associated field device segment.

A method of supporting multiple quality of service (QoS) levels for data being transmitted between two networking devices, such as customer equipment (CE), that use Ethernet and Asynchronous Transfer Mode (ATM). The method supports multiple QoS services in a network where a first CE is connected to a first edge device (interworking unit) using the Ethernet protocol and a second CE is connected to a second edge device using the ATM protocol. The edge devices may be directly connected together or they may be connected through a network backbone using any generally accepted network protocol. The first CE may be connected to the first edge device using a single Ethernet port, multiple Ethernet ports, a single virtual local area network (VLAN), or multiple VLAN's. The second CE is connected to an edge device using a single virtual circuit connection (VCC), a single virtual path connection (VPC), or multiple VCC's. The method ensures QoS for data transmitted between the first and the second CE via the Ethernet protocol to the ATM protocol and vice versa.

According to an example embodiment, a method includes communicating between redundant Flight Control Computers (FCCs) using Cross-Channel Data Links (CCDLs) that operate in accordance with an IEEE standard Ethernet protocol.

Distributed CMTS device for a HFC CATV network serving multiple neighborhoods by multiple individual cables, in which the QAM modulators that provide data for the individual cables are divided between QAM modulators located at the cable plant, and remote QAM modulators ideally located at the fiber nodes. A basic set of CATV QAM data waveforms may be transmitted to the nodes using a first fiber, and a second set of IP / on-demand data may be transmitted to the nodes using an alternate fiber or alternate fiber frequency, and optionally other protocols such as Ethernet protocols. The nodes will extract the data specific to each neighborhood and inject this data into unused QAM channels, thus achieving improved data transmission rates through finer granularity. A computerized “virtual shelf” control system for this system is also disclosed. The system has high backward compatibility, and can be configured to mimic a conventional cable plant CMTS.

The intelligent gateway device for vehicle controller LAN includes LAN bus interface, Ethernet interface, radio network interface, data back-up module, intelligent microcontroller, bus, other bus interface, vehicle control unit, phonetic and display interface and real-time data analyzing module. The device realizes the conversion between modularized LAN protocol and other network protocols, WWW web page browsing, display, phonetic prompt, etc; has running data analysis, record, control and other vehicular computer functions; and may be used widely in running state monitoring, data record, fault treatment, etc. of vehicle with LAN interface.

A method for transferring information between a first network comprising first-network-stations operating under an Ethernet protocol and a second network comprising second-network-stations operating under a Fibre Channel (FC) protocol, including grouping the first-network-stations into virtual local area networks (VLANs) which each transfer a respective VLAN-data-frame within the VLAN, and grouping the second-network-stations into FC zones which each transfer a respective zone-data-frame within the zone. The method further includes coupling the networks together using a gateway to convey data between the networks, configuring the gateway with an association mapping a primary VLAN and a primary zone, and translating in the gateway between a primary VLAN-data-frame and a primary zone-data-frame, responsive to the association, so as to convey primary-data between the primary VLAN and the primary zone via the gateway.

A method of communicating a packet sent from a sending processing element to a recipient processing element over a fast Ethernet network is provided, wherein an offload engine is used to process portions of the Ethernet protocol functions. The offload engine is a field-programmable gate array in communication with a switched fabric, and can send “fake” acknowledgements of a received packet to the sending processing element. If acknowledgement of receipt of the packet is not received by the offload engine prior to expiry of a timer, the offload engine will request the sending processing element resend the packet.

The invention discloses a general signal processing board card based on a multi-core DSP (digital signal processor). An FPGA (field programmable gate array) serves as a master control core, and two multi-core DSP chips are connected through a high-speed serial bus and supportable to SRIO (serial rapid input / output) and PCIE (peripheral component interconnect express) protocols. Each DSP is connected with an expandable external memory and a gigabit Ethernet interface, and the DSPs are connected mutually through the high-speed serial bus and supportable to Hyperlink, SRIO and PCIE protocols. The FPGA and a VPX connector are mutually connected through a gigabit transceiver and supportable to SRIO, PCIE and Ethernet protocols. Mounting positions of an external memory chip, a DSP chip and an FPGA chip on a printed board of the general signal processing board card are compatible positions allowing placement of other chips in the series respectively and accord with 6U standards in size. The problems of poor universality, small data throughput, low storing rate and low processing speed of existing signal processing board cards are solved, and the general signal processing board card has the advantages of quickness in processing, high storing rate, large data throughput and high universality and can be widely applied to fields of communication, radar, guided missiles, remote sensing, image processing and the like.

A method of supporting multiple quality of service (QoS) levels for data being transmitted between two networking devices, such as customer equipment (CE), that use Ethernet and Frame Relay (FR). The method supports multiple QoS services in a network where a first CE is connected to a first edge device (interworking unit) using the Ethernet protocol and a second CE is connected to a second edge device using the FR protocol. The edge devices may be directly connected together or they may be connected through a network backbone using any generally accepted network protocol. The first CE may be connected to the first edge device using a single Ethernet port, multiple Ethernet ports, a single virtual local area network (VLAN), or multiple VLAN's. The second CE is connected to an edge device using a single data link connection (DLC), or multiple DLC's. The method ensures QoS for data transmitted between the first and the second CE via the Ethernet protocol to the FR protocol and vice versa.

Distributed CMTS device for a HFC CATV network serving multiple neighborhoods by multiple individual cables, in which the QAM modulators that provide data for the individual cables are divided between QAM modulators located at the cable plant, and remote QAM modulators ideally located at the fiber nodes. A basic set of CATV QAM data waveforms may be transmitted to the nodes using a first fiber, and a second set of IP / on-demand data may be transmitted to the nodes using an alternate fiber or alternate fiber frequency, and optionally other protocols such as Ethernet protocols. The nodes will extract the data specific to each neighborhood and inject this data into unused QAM channels, thus achieving improved data transmission rates through finer granularity. A computerized “virtual shelf” control system for this system is also disclosed. The system has high backward compatibility, and can be configured to mimic a conventional cable plant CMTS.

Software in MPU builds united message model to realize protocol conversion in application layer among MODBUS / TCP industrial Ethernet, DeviceNet field bus and Profibus DP field bus. Corresponding interface module and communication adapter modules at main nodes realize their relevant protocols. Through an internal bus, protocol conversion device built from a MPU is connected to industrial Ethernet interface module, DeviceNet communication adapter module at main node, Profibus DP communication adapter module at main node and a SRAM. Through a serial peripheral interface, MPU is connected to an electrically erasable memory. The invention solves converting protocols based on different standards. One communication frame is compatible to multiple industrial communication networks so as to meet requirements of network real-time at low-layered devices as well as high rate and large capacity of network on information layer.

A network for connecting a plurality of devices and the components used in constructing the network. The network includes at least one fan-out device for connecting the devices to each other. The fan-out device includes a controller, a top port and a plurality of downstream ports. The controller monitors messages received by the ports and generates messages that are sent via the ports. The network also includes a plurality of network cables, one per port. The network preferably utilizes a cabling system that includes twisted pairs for communicating the messages via the Ethernet protocol and power conductors for distributing power to the various network devices. The fan-out device includes one power component associated with each of the ports. Each power component provides connections between the power lines in the network capble and the ports of the fan-out device. The power components are used to power the devices on the network and to monitor the power lines for problems. Switching circuitry in the power components allows the fan-out device to isolate cable runs connected thereto that have shorts or other problems. The fan-out device preferably stores a device identification number that the controller transmits on all of the ports in response to a message received on one of the downstream ports. The controller also generates a signal on the top port that causes any device connected to the fan-out device via the top port to ignore the message. One embodiment of the fan-out device provides a hub that is transparent to Ethernet protocols while not introducing the jitter into the signals associated with the re-transmission and synchronization functions performed by conventional hubs.

A method and system for creating an ethernet-formatted packet from an upstream DOCSIS packet. The upstream packet is first received along with packet characteristic data that is contained in physical layer prepend data and in the packet header. A packet tag is then created, based on the packet characteristic data. The packet characteristic data includes identifiers for the transmitting remote device and the channel over which the transmission is sent. Packet characteristic data also includes information about the physical characteristics of the transmission signal, such as the power level and time offset. The packet characteristic data also includes administrative information, such as the minislot count at which the packet is received and whether the packet was received in contention. The packet tag is appended to the payload of the upstream packet. Also appended to the payload is an encapsulation tag, and source and destination address headers. The result is a packet in an ethernet format. The resulting packet can therefore be sent using the ethernet protocol. The packet includes information that characterizes a DOCSIS packet. In a distributed cable modem termination system, this additional characterizing information can be used by processes further upstream, such as packet classification. An analogous operation can take place with respect to packets going downstream. Here, a DOCSIS packet is formed at an intermediate node, on the basis of a received ethernet-formatted packet.

Distributed and highly software reconfigurable CMTS (CMRTS) device, based on MAC and PHY units with FPGA and DSP components, for a HFC CATV network. The various CATV RF modulators, such as QAM modulators, may be divided between QAM modulators located at the cable plant, and remote QAM modulators ideally located at the fiber nodes. A basic set of CATV QAM data waveforms may optionally be transmitted to the nodes using a first fiber, and a second set of IP / on-demand data may be transmitted to the nodes using an alternate fiber or alternate fiber frequency, and optionally using other protocols such as Ethernet protocols. The nodes will extract the data specific to each neighborhood and inject this data into unused QAM channels, thus achieving improved data transmission rates through finer granularity. A computerized “virtual shelf” control system for managing and reconfiguring the FPGA and DSP based CMTRS units is also disclosed.

The invention discloses a smart factory-based multi-function data acquisition device, acquisition system and method. The acquisition device comprises a microprocessor as well as a power supply module, a 485 transceiver chip, a 232 transceiver chip, an IO signal conversion circuit and two Ethernet protocol stack chips which are connected with the microprocessor, wherein the 485 transceiver chip and the 232 transceiver chip are respectively provided with an RS-485 Interface and an RS-232 interface which are used for connecting external devices and acquiring device data, the Ethernet protocol stack chips are provided with Ethernet interfaces and are used for connecting upper computers or other acquisition devices and transmitting data, and the IO signal conversion circuit is provided with an IO port and is used for connecting external devices, acquiring signals or controlling the devices. The data acquisition device can be configured to a master station mode or a slave station mode, and is flexible in interfacing, and therefore, the data acquisition device can read data of field devices and scattered acquisition points more economically, conveniently and efficiently and provide complete and accurate bottom data for the establishment of a smart factory.

The invention discloses a simulation system of simulating switched Ethernet clock synchronization. The simulation system comprises an Ethernet protocol instruction database, a timer, nodes, a link attribute configuration module, a synchronization topology generation module, a state management module, a state conversion module, a data processing module, a fault detection and processing module, a clock correction module and a result output module. The Ethernet protocol instruction database and the timer satisfy an IEEE802.3ISO / IEC8802-3 standard specification and instruction and state association information indicated in SAEAS6802. The nodes and the link attribute configuration module are used to carry out simulation role configuration so as to obtain a synchronization topology structure. Then, state role management is performed on each node in the synchronization topology structure and different state roles are used to carry out data processing, clock correction and fault detection. And then a state and clock correction result is output. Compared to the current simulation system, by using the simulation system of the invention, strong scalability is showed on an aspect of network model establishment, which is convenient to carry out an effective analysis on a clock synchronization process.

A multiprotocol encapsulation method and system for transporting different protocols over Ethernet are disclosed. The method includes receiving frames from an optical interface and identifying a protocol of the frame. The frames are multiprotocol and include storage network interface protocols. The frames are encapsulated into Ethernet protocol and transported over an Ethernet link.

A novel method of operating repeaters or other hub devices in a local area network, such as one conforming to Ethernet protocol, in which there are a plurality of repeater interfaces of respectively different data rates for communicating with a link partner on a network medium. The methodology comprises determining the data rate of operation of the link partner, and based on that data rate, automatically steering data between the network medium and a selected one of the repeaters. In a preferred embodiment, a network transceiver comprises one or more physical layer devices (PHY), and a plurality of shared data busses corresponding, respectively, to the speeds of operation of the repeaters, for interconnecting the repeaters and one or more of the physical layer devices. A multiplexer interconnects each of the one or more physical layer devices to a selected one of the plurality of busses, and an auto-negotiation unit controls the multiplexer to interconnect the physical layer devices to corresponding busses selected depending on the operating speed of the link partner.

A communication device for a target integrated circuit chip having a digital processor, an on-chip emulator for controlling the digital processor and for collecting operation data from the digital processor for communicating to off-chip circuitry, and a target on-chip universal serial bus interface connected to the on-chip emulator, the communication device including an Ethernet port, an universal serial bus port and a further integrated circuit chip having on-chip universal serial bus interface, the on-chip Ethernet interface being connected to the Ethernet port, the interfaces being connected to the processing circuitry for translating between Ethernet protocol data on an Ethernet bus connected to the Ethernet port and universal serial bus data for the target on-chip universal serial bus interface.

Certain aspects of a method and system for an adaptive cache for memory protection table (MPT), memory translation table (MTT) and TCP context are provided. At least one of a plurality of on-chip cache banks integrated within a multifunction host bus adapter (MHBA) chip may be allocated for storing active connection context for any of a plurality of communication protocols. The MHBA chip may handle a plurality of protocols, such as an Ethernet protocol, a transmission control protocol (TCP), an Internet protocol (IP), Internet small computer system interface (iSCSI) protocol, and a remote direct memory access (RDMA) protocol. The active connection context may be stored within the allocated at least one of the plurality of on-chip cache banks integrated within the multifunction host bus adapter chip, based on a corresponding one of the plurality of communication protocols associated with the active connection context.

A method of supporting multiple quality of service (QoS) levels for data being transmitted between two networking devices, such as customer equipment (CE), that use Ethernet and Frame Relay (FR). The method supports multiple QoS services in a network where a first CE is connected to a first edge device (interworking unit) using the Ethernet protocol and a second CE is connected to a second edge device using the FR protocol. The edge devices may be directly connected together or they may be connected through a network backbone using any generally accepted network protocol. The first CE may be connected to the first edge device using a single Ethernet port, multiple Ethernet ports, a single virtual local area network (VLAN), or multiple VLAN's. The second CE is connected to an edge device using a single data link connection (DLC), or multiple DLC's. The method ensures QoS for data transmitted between the first and the second CE via the Ethernet protocol to the FR protocol and vice versa.

The invention provides an information processing method based on an IoS (Internet of Scenes). The IoS comprises a first IoS terminal and a second IoS terminal connected with the first IoS terminal; and the first IoS terminal carries out communication with an Ethernet terminal. The method comprises the steps of: receiving first information stream output by the second IoS terminal through an IoS protocol; converting the first information stream into first standard information stream which can be identified by an Ethernet protocol; and sending the first standard information stream into the Ethernet terminal, wherein the Ethernet terminal is used for storing the first standard information stream. According to the invention, the process of converting the IoS first information stream into the Ethernet first standard information stream and the process of storing the first standard information stream can be implemented without using a video and audio acquisition card and are low in cost.

The invention discloses a method for describing a protocol by using an XML and a protocol resolving system built by the same, namely the method for describing the protocol by using the XML and a system which is built based on the method and is used for resolving an industrial Ethernet protocol. The method for describing the protocol by using the XML comprises two aspects, wherein one is the method for describing an Ethernet protocol format by using the XML and the other one is the method for describing a protocol suite relationship by using the XML. The system for resolving the industrial Ethernet protocol comprises two parts, namely a hardware system and a software system, wherein the hardware system comprises a network adapter and a host machine; and the software system comprises five units, namely a protocol load unit, a protocol library unit, a data capture unit, a protocol match unit and a data resolving unit. The method and the system can conveniently realize the modification and expansion of protocol contents, realize the screening, match and resolving of a multi-layer protocol, and have wide practical value and application prospect in the technical field of Ethernet.

A system for negotiating Ethernet link settings between interconnected nodes in a network having an Ethernet protocol stack that includes a PCS sub-layer with an auto-negotiation function. The system comprises connecting an intermediate device coupled between two network nodes via optical or copper interfaces, with the link settings between each node and the connected intermediate device being the same, thereby bypassing the auto-negotiation of the PCS sub-layer in the intermediate device. The intermediate device may transparently send negotiation messages from each node to the other during the link negotiation phase without interacting with those messages. Instead of the intermediate device, a single form pluggable (SFP) device may be connected between the two network nodes via optical or copper interfaces on the network side and via an SFP slot on the device side.

The present specification discloses a multimedia distribution system and method. The system and method has a producer workstation, a delivery server, a high-bandwidth one-way satellite transmission system, a terrestrial two-way communication system (including use of the Internet), a plurality of satellite affiliate workstations, and a plurality of terrestrial client workstations. The delivery server receives digital information (envelopes and associates media files) from the producer workstations for delivery of the information to the affiliate and client workstations addressed in the envelope. The affiliate and client workstations provide the delivery server with confirmation of delivery of each received envelope and its associated files. In the absence of receipt of confirmation of delivery, the delivery server re-sends the unconfirmed envelope and associated files to the non-confirming affiliate or client workstation by a two-way terrestrial connection or by a manual system, such as a dub-and-ship service. The delivery server has the ability to push content to affiliates, push-pull content to affiliate and clients, to conventionally pull content from the delivery server, and push the content to affiliates and clients by manual delivery services. The disclosed system and method utilize a unique envelope and addressing protocol and a unique broadcast file transfer protocol for distribution to affiliate workstations by one-way satellite broadcast. The disclosed system and method also make significant use of the TCP / IP, IGMP, and Ethernet protocols and information distribution techniques.

The invention belongs to data acquisition and analysis gateways, and discloses a coal mine electromechanical equipment data acquisition and analysis gateway. The coal mine electromechanical equipment data acquisition and analysis gateway comprises a device and a method. The device comprises a core processing module, a data memory module, a program memory module, a controller area network (CAN) bus module, a serial port communication module, an Ethernet protocol conversion module, a fiber interface module, an RJ45 interface module and a power module. The core processing module is simultaneously connected with the data memory module, the program memory module, the CAN bus module, the serial port communication module and the Ethernet protocol conversion module. The Ethernet protocol conversion module is simultaneously connected with the fiber interface module and the RJ45 interface module. The power module is connected with all the modules and supplies power sources to all the modules. The method is based on a data receiving module, a data analysis module, a data uploading module and a gateway setting module, wherein the four modules are implemented through software to control working processes and working modes of hardware. The coal mine electromechanical equipment data acquisition and analysis gateway has the advantages of being capable of setting corresponding equipment names, interface types and communication protocols and realizing in-place analysis, storage and retransmission of data.

The invention discloses a method for Ethernet package detection based on a 10Gb network card and field programmable gate array (FPGA) hardware calibration. The 10Gb network card comprises a 10Gb attachment unit interface (XAUI) module for achieving a physical layer protocol for Ethernet protocol data transmission, a 10Gb Ethernet media access controller (10GEMAC) module for achieving a data link layer protocol for Ethernet protocol data transmission, an interface time sequence conversion logic module for achieving interface conversion, an advanced extensible interface (AXI) Ethernet module for managing an Ethernet data package, an advanced extensible interface direct memory access (AXIDMA) module for data caching, an AXI Internet module for achieving routing control, a PCIeHardIp module for achieving the Ethernet data package unpacking and packing process and a checksum hardware logic module for achieving hardware checksum check logic of the Ethernet data package. According to the hardware achieving method, hardware calculation of checksum of the Ethernet data package, and the method has the advantages that the calculation speed is quick and stability and reliability of data transmission are high.