81 results about "Fast Ethernet" patented technology

A system for protocol processing in a computer network has a TCP / IP Offload Network Interface Device (TONID) associated with a host computer. The TONID provides a fast-path that avoids protocol processing for most large multi-packet messages, greatly accelerating data communication. The TONID also assists the host for those message packets that are chosen for processing by host software layers. A communication control block for a message is defined that allows DMA controllers of the TONID to move data, free of headers, directly to or from a destination or source in the host. The context is stored in the TONID as a communication control block (CCB) that can be passed back to the host for message processing by the host. The TONID contains specialized hardware circuits that are much faster at their specific tasks than a general purpose CPU. A preferred embodiment includes a trio of pipelined processors with separate processors devoted to transmit, receive and management processing, with full duplex communication for four fast Ethernet nodes.

Method and apparatus for transporting Ethernet data packets via radio frames in a wireless metropolitan area network. A terminal includes a data packet receiver for receiving data packets for communication over a wireless link wherein not every data packet has a same length; a data packet formatting apparatus for formatting the data packets according to radio frames wherein the radio frames each have a same length and wherein the data packets are formatted into the radio frames such that boundaries for the data packets are not necessarily aligned with boundaries for the radio frames; and a wireless transceiver for communicating the radio frames over the wireless link. The packets can be Fast Ethernet packets. The terminal does not convert the Ethernet data packets into a telephony communication protocol or into an asynchronous transfer mode (ATM) protocol prior to communication of the radio frames over the wireless link. The terminal can include a data packet synchronizer for synchronizing the data packets to a clock signal associated with the radio frames. The data packets can be time-division multiplexed into the radio frames. According to another aspect, a method of transporting Ethernet data packets via radio frames includes steps of receiving Ethernet data packets wherein each data packet includes a preamble and a start-of-frame delimiter, stripping off the preamble and start-of-frame delimiter, formatting the packet data according to radio frames, including appending a synch field to the packet data, and appending a length field to the packet data.

The system of the present invention provides data transmission speeds at or in excess of 10 gigabits per second between one or more source devices and one or more destination devices. The system comprises a media access control (MAC) interface to facilitate receipt and transmission of packets over a physical interface. A first field programmable gate array is coupled to the MAC interface and operative to receive packets from the MAC interface and configured to perform initial processing of packets, which are dispatched to a first memory. A second field programmable gate array is operative to retrieve packets from the first memory and configured to compute an appropriate destination, which is used to dispatch packets to a backplane. A third field programmable gate array is provided that is operative to receive packets from the backplane and configured to organize the packets for transmission, which are dispatched to a second memory. A fourth field programmable gate array is coupled to the MAC interface and operative to retrieve packets from the second memory and configured to schedule the transmission of packets to the MAC interface for transmission to one or more destination devices.

A digital network video and audio monitoring system includes a real time digital video and audio processing unit, a fast Ethernet switching unit and a self-protecting and alarming unit. The real time digital video and audio processing unit has multiple audio and video processing modules each made of an interface card and connected to a video and audio monitor. The fast Ethernet switching unit is connected to the real time digital video and audio processing unit and further connected to TCP / IP network. Therefore, monitoring signals from the video and audio monitor can be sent to the network. Further, the self-protecting and alarming unit is connected between an external AC power source and outputs of the video and audio monitors to detect whether any abnormal signals occur. The present invention can directly connect to one or more video and audio monitors and send the monitoring signals over the network.

The present invention provides scalable and rapid Ethernet fault detection which eliminates the requirement to contiguously send heartbeat frames at regular intervals to detect connectivity faults for each Ethernet Path. The present invention generates Continuity Check Message (CCM) frames only when a fault occurs, continues generating CCM frames while the fault remains, and discontinues when the fault clears. The present invention can be utilized with Ethernet Protection Switching to rapidly detect faults. Additionally, the present invention can be used in any Ethernet topology including point-to-point, rings, and the like.

The back-up system based on fast Ethernet bus includes main card, N line cards, kernel Ethernet exchange module, through which the line cards are connected to the main card, and Ethernet bus for interacting information between the main card and the kernel Ethernet exchange module and between one of the line cards and kernel Ethernet exchange module. The present invention is used in the back-up and rearrangement of both hardware and software during inserting and withdrawing line card and in case of failure. The present invnetion is used to replace parallel bus for the information interaction and can simplify back board design, raise the anti-jamming capacity and increase the transmission distance. The present invention adopts spot-to-spot connection mode to ensure the simultaneous data interaction between each of the line cards and the main card.

The invention discloses a smart power grid distribution type measurement and control synchronizing method. A test terminal with Ethernet networking and a GPS (Global Positioning System) synchronous sequence interface forms a hardware platform together with a server by a known rapid Ethernet exchanger, and the synchronous measurement and control of a distribution type power grid can be realized under the control of a synchronous acquisition and management program, wherein 128 terminals form a distribution type test system and are respectively connected at different parts of transformer substations or factories to complete the local data acquisition, control and processing, and meanwhile, each terminal is managed by a Workstation through a network so as to realize the synchronous control of the local test terminal and other terminals and the data processing by cooperation with the other terminals. According to the smart power grid distribution type measurement and control synchronizing method, the synchronous test between the remote test terminals of the power grid is realized, and the demands on the safety monitoring, grid-tied control and proper scheduling of each station by the distribution type power grid can be met.

The invention relates to an IP network-based integrated service switchboard (100), which is characterized by comprising an analogue user unit ASU (101), an analogue trunking unit ATU (102), a digital trunking unit DTU (103), an integrated service unit ISU (104), a main processing unit MPU (105), a service processing unit SPU (106), a voice resource unit VRU (107), a media resource unit MRU (108) and a fast Ethernet interface unit FEI (109), wherein the switchboard (100) realizes the integrated service switching function by operating system programs in the analogue user unit ASU (101), the analogue trunking unit ATU (102), the digital trunking unit DTU (103), the integrated service unit ISU (104), the main processing unit MPU (105), the service processing unit SPU (106), the voice resource unit VRU (107) and the media resource unit MRU (108). The switchboard can construct a multi-service integrated communication platform for enterprises by adopting advanced technology of TDM, VoIP and the like in the field of communication and combining the own Intranet network of the enterprises.

An Ethernet Optical Area Network (EOAN) system, and methods for implementing and using such an EOAN system, are disclosed. The EOAN system may be used to improve the speed and reliability of data communications networks for small to medium-sized companies in metropolitan area networks. The EOAN system provides end-to-end Ethernet protocol, enabling professionals to have high-speed data communications in real time. The EOAN system may be generally utilized for improving data communications between branch offices, home offices, campuses, and remote sites for a wide variety of industries. The present invention preferably includes a fiber optic ring, Network Operation Center (NOC), NOC architecture components, existing client equipment, and one or more Free Space Optic (FSO) devices, microwave communication technology, and / or data switching platforms to implement high-speed Ethernet-based connections such as within a specified metropolitan area. The preferred EOAN system preferably integrates a plurality of FSO, microwave, and / or fiber optic technologies with Ethernet protocol (Fast Ethernet, Gigabit Ethernet, 10 Gigabit, etc.) to provide data connection services.

A system and method of reducing the input and output pins used to interface a fast serial port Ethernet processing system using multiplexing. Using the system of the present invention, four pins can allow a plurality of Ethernet communication paths to be connected to a single processor on a substrate. These four connections include a clocking input as well as a strobe signal which coordinates the multiplexing and identifies the time period for a predetermined source. The physical layer and the processor are each provided with a multiplexor which is controlled by the strobe to select the network to be coupled at any given time. The multiplexor includes a counter which is incremented by the clocking input and reset by the strobe signal.