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486 results about "Command response" patented technology

High-speed optical fiber bus and realization method for redundance topological structure thereof

The invention discloses a high-speed optical fiber bus based on a command response type high-speed optical fiber bus protocol. The structure comprises an optical fiber bus, a network controller, a plurality of network terminals and a plurality of remote terminals, wherein the network controller is connected to the optical fiber bus, the network terminals are hooked on the optical fiber bus through a plurality of optical fiber couplers, and the remote terminals are connected to the optical fiber couplers through bridging equipment. The invention also discloses a realization method for a redundance topological structure of the high-speed optical fiber bus, which comprises the following steps of: closing an optical link, and detecting the connectivity of the optical link in real time; mutually serving as a backup by reverse double loops, and selecting the other link when one link fails; and utilizing a network monitor as redundance equipment of the network controller. By adopting the invention, the optical fiber bus can meet the requirement of various application environments, such as aerospace and the like for high speed, real time and high reliability, easily isolate single-point failures and support various topological structures, the communication rate can reach 2.5Gbps, wires are convenient to lay, the equipment used by a system is simple, and the reliability is high.
Owner:BEIJING TASSON SCI & TECH CO LTD

Remote automatic control method and system of water-saving irrigation system

The invention discloses remote automatic control method and system of a water-saving irrigation system. The method comprises the following steps of utilizing a GSM (Global System for Mobile Communication)/GPRS (General Packet Radio Service)/CDMA (Code Division Multiple Access) wireless communication network to transfer a command of a control center to an electromagnetic valve in a remote field, and remotely controlling opening and closing of the electromagnetic valve to enable the irrigation system to automatically carry out irrigation, thereby reaching an unattended state; and feeding back opening and closing signals of the electromagnetic valve in the remote field to the control center through the GSM/GPRS/CDMA wireless communication network so that an operator of the control center can know whether the electromagnetic valve in the remote field receives the command signal. The invention has the advantages of high control accuracy, high control hit rate, rapid sending command response, high automation degree and the like. The operator can preset an irrigation plan of a whole irrigation period, and the system can automatically carry out irrigation according to the irrigation plan and can reach the unattended state.
Owner:遵义群建塑胶制品有限公司

Command queueing engine

The present invention includes a Command Queuing Engine (CQE) that is a firmware-assist block which processes some of the firmware tasks related to command and context management preferably for SCSI. When enabled, CQE will decode SCSI commands as they arrive, and determine if DMA contexts can be automatically configured and started to transfer the data for those commands. CQE can also program DMA contexts to automatically return status information either after the disk has completed a transfer (as in non-cached writes) or after the DMA transfer is completed (as in reads or cached writes). CQE also utilizes a buffer-based linked-list to queue the SCSI commands as they arrive for future DMA context configuration. The present invention provides automated recognition and linking of commands belonging to a common thread, i.e., are sequential. The present invention also provides extensive thread boundary information and flexible firmware control for reordering commands. Automatic TE entry generation and storage to buffer memory, and automatic TE retrieval from the buffer memory and execution of entire command threads are further features provided by the present invention. As a result, bus command response latency is decreased by reducing the delay for the command to be started and at the end of the data transfer for status to be send. Disk efficiency is increased by reducing the latency to back-fill or empty a buffer memory segment of data that will be transferred. Furthermore, the present invention is a low-cost trade-off between hardware and firmware functionality.
Owner:BROADCOM INT PTE LTD
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