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protocol

protocol為進行網絡中的數據交換而建立的規則、標準或約定。用于不同系統中實體間的通信。兩個實體要想通信，必須有“同一種語言”，而且，對于通信內容，怎樣通信和何時通信，都必須遵守一定的規定，這些規定就是協議。亦可簡單地定義為：控制兩實體間數據交換的一套規則。在電子通訊連接中，各個不同的層次都有自己的協議。例如，在硬件設備層次和應用程序層次的數據交換都有自己的協議。在開放式系統互連（OSI）標準模式中，每個層都有一到兩種協議，發生通訊的兩個終端都必須能識別和遵守協議。協議通常以工業或國際標準的形式被描述。

基于ZigBee技術的無線智能家用燃氣報警系統

在研究傳統家用燃氣報警器的基礎上，以ZigBee協議為平臺，構建mesh網狀網絡實現網絡化的智能語音報警系統。由于傳感器本身的溫度和實際環境溫度的影響，傳感器標定后采用軟件補償方法。為了減少系統費用，前端節點采用半功能節點設備，路由器和協調器采用全功能節點設備，構建mesh網絡所形成的家庭內部報警系統，通過通用的電話接口連接到外部的公用電話網絡，啟動語音模塊進行報警。實驗結果表明，在2.4 GHz頻率下傳輸，有墻等障礙物的情況下，節點的傳輸距離大約為35 m，能夠滿足家庭需要，且系統工作穩定，但在功耗方面仍需進一步改善。 Abstract: On the basis of studying traditional household gas alarm system, this paper proposed the platform for the ZigBee protocol，and constructed mesh network to achieve network-based intelligent voice alarm system. Because of the sensor temperature and the actual environment temperature, this system design used software compensation after calibrating sensor. In order to reduce system cost, semi-functional node devices were used as front-end node, however, full-function devices were used as routers and coordinator，constructed alarm system within the family by building mesh network，connected to the external public telephone network through the common telephone interface, started the voice alarm module. The results indicate that nodes transmit about 35m in the distance in case of walls and other obstacles by 2.4GHz frequency transmission, this is able to meet family needs and work steadily, but still needs further improvement in power consumption.

標簽： ZigBee 無線智能家報警系統

上傳時間： 2013-10-30

上傳用戶：swaylong
XAPP708 -133MHz PCI-X到128MB DDR小型DIMM存儲器橋

The Virtex-4 features, such as the programmable IDELAY and built-in FIFO support, simplifythe bridging of a high-speed, PCI-X core to large amounts of DDR-SDRAM memory. Onechallenge is meeting the PCI-X target initial latency specification. PCI-X protocol Addendum tothe PCI Local Bus Specification Revision 2.0a ([Ref 6]) dictates that when a target signals adata transfer, "the target must do so within 16 clocks of the assertion of FRAME#." PCItermination transactions, such as Split Response/Complete, are commonly used to meet thelatency specifications. This method adds complexity to the design, as well as additional systemlatency. Another solution is to increase the ratio of the memory frequency to the PCI-X busfrequency. However, this solution increases the required power and clock resource usage.

標簽： PCI-X XAPP DIMM 708

上傳時間： 2013-11-24

上傳用戶：18707733937
Virtex-5 GTP Transceiver Wizar

The LogiCORE™ GTP Wizard automates the task of creating HDL wrappers to configure the high-speed serial GTP transceivers in Virtex™-5 LXT and SXT devices. The menu-driven interface allows one or more GTP transceivers to be configured using pre-definedtemplates for popular industry standards, or from scratch, to support a wide variety of custom protocols.The Wizard produces a wrapper, an example design, and a testbench for rapid integration and verification of the serial interface with your custom function Features• Creates customized HDL wrappers to configureVirtex-5 RocketIO™ GTP transceivers• Users can configure Virtex-5 GTP transceivers toconform to industry standard protocols usingpredefined templates, or tailor the templates forcustom protocols• Included protocol templates provide support for thefollowing specifications: Aurora, CPRI, FibreChannel 1x, Gigabit Ethernet, HD-SDI, OBSAI,OC3, OC12, OC48, PCI Express® (PCIe®), SATA,SATA II, and XAUI• Automatically configures analog settings• Each custom wrapper includes example design, testbench; and both implementation and simulation scripts

標簽： Transceiver Virtex Wizar GTP

上傳時間： 2013-10-20

上傳用戶：dave520l
BGP測試工具集的設計與實現

協議是互聯網絡的靈魂，而協議測試是確保網絡交互暢通無阻的守護神。尤其是當人們進入一個新的紀元，網絡通信成為信息流通的首選手段，與協議不符合的產品必將被淘汰，因而協議測試也越來越受到人們的重視。protocols are the soul of the Internet, and protocol Testing isa guarding deamon for the network transaction to be sound and strong.

標簽： BGP 測試工具

上傳時間： 2013-10-08

上傳用戶：zhyfjj
USB調試與開發

現在，您可在新的MCU項目中加入供連接多個器件和外設的USB接口，這比過去慣用的SPI和UART看起來要復雜些。參加本會議可以了解如何使用Beagle protocol Analyzer實施、分析和調試飛思卡爾MCU的USB系統。

標簽： USB 調試

上傳時間： 2013-11-06

上傳用戶：huaidan
Works a client and a server using UDP in asynchronous operation mode to implement the simple daytime

Works a client and a server using UDP in asynchronous operation mode to implement the simple daytime protocol, as described in RFC 867

標簽： asynchronous implement operation daytime

上傳時間： 2015-02-15

上傳用戶：秦莞爾w
OSERL (Open SMPP Erlang Library) is an erlang implementation of the Short Message Peer to Peer proto

OSERL (Open SMPP Erlang Library) is an erlang implementation of the Short Message Peer to Peer protocol, covering the entire specification (version 5.0). Forward and backward compatibilities guidelines were adopted.

標簽： Peer implementation Library Message

上傳時間： 2013-12-29

上傳用戶：dengzb84
Lachesis an IRCRPG combat engine written in a combination of C and C++. The combat engine is being w

Lachesis an IRCRPG combat engine written in a combination of C and C++. The combat engine is being written for a specific RPG, but most of the project should be useful to IRCRPGs in general. It includes a native interface to the IRC protocol to allow it to act as an IRC bot, for such uses as dice rolling and acting as a remote-controlled client (RPG NPC perhaps).

標簽： combat engine combination Lachesis

上傳時間： 2014-01-26

上傳用戶：firstbyte
AN2120, Connecting an M68HC08 Family Microcontroller to an Internet Service Provider (ISP) Using the

AN2120, Connecting an M68HC08 Family Microcontroller to an Internet Service Provider (ISP) Using the Point-to-Point protocol (PPP).

標簽： Microcontroller Connecting Internet Provider

上傳時間： 2013-12-17

上傳用戶：標點符號
Pocket SIP Messenger is a SIP instant messaging client for small devices that use Windows CE (iPAQ P

Pocket SIP Messenger is a SIP instant messaging client for small devices that use Windows CE (iPAQ Pocket PC, ...). The IM protocol is based on SIMPLE (IETF) working group s specification.

標簽： Messenger SIP messaging instant

上傳時間： 2015-03-13

上傳用戶：lyy1234

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