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There has long been a need for portable ultrasoundsystems that have good Resolution at affordable costpoints. Portable systems enable healthcare providersto use ultrasound in remote locations such asdisaster zones, developing regions, and battlefields,where it was not previously practical to do so.
標簽：
Xilinx
便攜式
超聲系統
器件
上傳時間：
2013-10-26
上傳用戶：liulinshan2010
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很多不同的廠家生產各種型號的計算機，它們運行完全不同的操作系統，但TCP.IP協議族允許它們互相進行通信。這一點很讓人感到吃驚，因為它的作用已遠遠超出了起初的設想。T C P / I P起源于6 0年代末美國政府資助的一個分組交換網絡研究項目，到9 0年代已發展成為計算機之間最常應用的組網形式。它是一個真正的開放系統，因為協議族的定義及其多種實現可以不用花錢或花很少的錢就可以公開地得到。它成為被稱作“全球互聯網”或“因特網(Internet)”的基礎，該廣域網（WA N）已包含超過1 0 0萬臺遍布世界各地的計算機。本章主要對T C P / I P協議族進行概述，其目的是為本書其余章節提供充分的背景知識。
TCP.IP協議 縮略語
ACK (ACKnowledgment) TCP首部中的確認標志
API (Application Programming Interface) 應用編程接口
ARP (Address Resolution Protocol) 地址解析協議
ARPANET(Defense Advanced Research Project Agency NETwork) (美國)國防部遠景研究規劃局
AS (Autonomous System) 自治系統
ASCII (American Standard Code for Information Interchange) 美國信息交換標準碼
ASN.1 (Abstract Syntax Notation One) 抽象語法記法1
BER (Basic Encoding Rule) 基本編碼規則
BGP (Border Gateway Protocol) 邊界網關協議
BIND (Berkeley Internet Name Domain) 伯克利I n t e r n e t域名
BOOTP (BOOTstrap Protocol) 引導程序協議
BPF (BSD Packet Filter) BSD 分組過濾器
CIDR (Classless InterDomain Routing) 無類型域間選路
CIX (Commercial Internet Exchange) 商業互聯網交換
CLNP (ConnectionLess Network Protocol) 無連接網絡協議
CRC (Cyclic Redundancy Check) 循環冗余檢驗
CSLIP (Compressed SLIP) 壓縮的S L I P
CSMA (Carrier Sense Multiple Access) 載波偵聽多路存取
DCE (Data Circuit-terminating Equipment) 數據電路端接設備
DDN (Defense Data Network) 國防數據網
DF (Don’t Fragment) IP首部中的不分片標志
DHCP (Dynamic Host Configuration Protocol) 動態主機配置協議
DLPI (Data Link Provider Interface) 數據鏈路提供者接口
DNS (Domain Name System) 域名系統
DSAP (Destination Service Access Point) 目的服務訪問點
DSLAM (DSL Access Multiplexer) 數字用戶線接入復用器
DSSS (Direct Sequence Spread Spectrum) 直接序列擴頻
DTS (Distributed Time Service) 分布式時間服務
DVMRP (Distance Vector Multicast Routing Protocol) 距離向量多播選路協議
EBONE (European IP BackbONE) 歐洲I P主干網
EOL (End of Option List) 選項清單結束
EGP (External Gateway Protocol) 外部網關協議
EIA (Electronic Industries Association) 美國電子工業協會
FCS (Frame Check Sequence) 幀檢驗序列
FDDI (Fiber Distributed Data Interface) 光纖分布式數據接口
FIFO (First In, First Out) 先進先出
FIN (FINish) TCP首部中的結束標志
FQDN (Full Qualified Domain Name) 完全合格的域名
FTP (File Transfer Protocol) 文件傳送協議
HDLC (High-level Data Link Control) 高級數據鏈路控制
HELLO 選路協議
IAB (Internet Architecture Board) Internet體系結構委員會
IANA (Internet Assigned Numbers Authority) Internet號分配機構
ICMP (Internet Control Message Protocol) Internet控制報文協議
IDRP (InterDomain Routing Protocol) 域間選路協議
IEEE (Institute of Electrical and Electronics Engineering) （美國）電氣與電子工程師協會
IEN (Internet Experiment Notes) 互聯網試驗注釋
IESG (Internet Engineering Steering Group) Internet工程指導小組
IETF (Internet Engineering Task Force) Internet工程專門小組
IGMP (Internet Group Management Protocol) Internet組管理協議
IGP (Interior Gateway Protocol) 內部網關協議
IMAP (Internet Message Access Protocol) Internet報文存取協議
IP (Internet Protocol) 網際協議
I RTF (Internet Research Task Force) Internet研究專門小組
IS-IS (Intermediate System to Intermediate System Protocol) 中間系統到中間系統協議
ISN (Initial Sequence Number) 初始序號
ISO (International Organization for Standardization) 國際標準化組織
ISOC (Internet SOCiety) Internet協會
LAN (Local Area Network) 局域網
LBX (Low Bandwidth X) 低帶寬X
LCP (Link Control Protocol) 鏈路控制協議
LFN (Long Fat Net) 長肥網絡
LIFO (Last In, First Out) 后進先出
LLC (Logical Link Control) 邏輯鏈路控制
LSRR (Loose Source and Record Route) 寬松的源站及記錄路由
MBONE (Multicast Backbone On the InterNEt) Internet上的多播主干網
MIB (Management Information Base) 管理信息庫
MILNET (MILitary NETwork) 軍用網
MIME (Multipurpose Internet Mail Extensions) 通用I n t e r n e t郵件擴充
MSL (Maximum Segment Lifetime) 報文段最大生存時間
MSS (Maximum Segment Size) 最大報文段長度
M TA (Message Transfer Agent) 報文傳送代理
MTU (Maximum Transmission Unit) 最大傳輸單元
NCP (Network Control Protocol) 網絡控制協議
NFS (Network File System) 網絡文件系統
NIC (Network Information Center) 網絡信息中心
NIT (Network Interface Tap) 網絡接口栓（S u n公司的一個程序）
NNTP (Network News Transfer Protocol) 網絡新聞傳送協議
NOAO (National Optical Astronomy Observatories) 國家光學天文臺
NOP (No Operation) 無操作
NSFNET (National Science Foundation NETwork) 國家科學基金網絡
NSI (NASA Science Internet) （美國）國家宇航局I n t e r n e t
NTP (Network Time Protocol) 網絡時間協議
NVT (Network Virtual Terminal) 網絡虛擬終端
OSF (Open Software Foudation) 開放軟件基金
OSI (Open Systems Interconnection) 開放系統互連
OSPF (Open Shortest Path First) 開放最短通路優先
PAWS (Protection Against Wrapped Sequence number) 防止回繞的序號
PDU (Protocol Data Unit) 協議數據單元
POSIX (Portable Operating System Interface) 可移植操作系統接口
PPP (Point-to-Point Protocol) 點對點協議
PSH (PuSH) TCP首部中的急迫標志
RARP (Reverse Address Resolution Protocol) 逆地址解析協議
RFC (Request For Comments) Internet的文檔，其中的少部分成為標準文檔
RIP (Routing Information Protocol) 路由信息協議
RPC (Remote Procedure Call) 遠程過程調用
RR (Resource Record) 資源記錄
RST (ReSeT) TCP首部中的復位標志
RTO (Retransmission Time Out) 重傳超時
RTT (Round-Trip Time) 往返時間
SACK (Selective ACKnowledgment) 有選擇的確認
SLIP (Serial Line Internet Protocol) 串行線路I n t e r n e t協議
SMI (Structure of Management Information) 管理信息結構
SMTP (Simple Mail Transfer Protocol) 簡單郵件傳送協議
SNMP (Simple Network Management Protocol) 簡單網絡管理協議
SSAP (Source Service Access Point) 源服務訪問點
SSRR (Strict Source and Record Route) 嚴格的源站及記錄路由
SWS (Silly Window Syndrome) 糊涂窗口綜合癥
SYN (SYNchronous) TCP首部中的同步序號標志
TCP (Transmission Control Protocol) 傳輸控制協議
TFTP (Trivial File Transfer Protocol) 簡單文件傳送協議
TLI (Transport Layer Interface) 運輸層接口
TTL (Ti m e - To-Live) 生存時間或壽命
TUBA (TCP and UDP with Bigger Addresses) 具有更長地址的T C P和U D P
Telnet 遠程終端協議
UA (User Agent) 用戶代理
UDP (User Datagram Protocol) 用戶數據報協議
URG (URGent) TCP首部中的緊急指針標志
UTC (Coordinated Universal Time) 協調的統一時間
UUCP (Unix-to-Unix CoPy) Unix到U n i x的復制
WAN (Wide Area Network) 廣域網
WWW (World Wide Web) 萬維網
XDR (eXternal Data Representation) 外部數據表示
XID (transaction ID) 事務標識符
XTI (X/Open Transport Layer Interface) X/ O p e n運輸層接口
標簽：
tcp
協議
上傳時間：
2013-11-13
上傳用戶：tdyoung
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針對飛行模擬器座艙數據采集的復雜性，設計了一種基于以太網分布式的數據采集控制系統，該系統是RCM5700微處理器模塊上的以太網應用。在系統的基礎上具體討論了PoE技術的應用，在傳輸數據的網線上同時提供電流，提出并實現了一種包括輔助電源在內的完整可靠的PoE供電方案。設計采用美國國家半導體的LM5073和LM5576并根據不同的負載情況，進行穩定可靠的電壓轉換，以滿足數據采集電路的要求。實驗結果表明：該設計穩定可靠，滿足低于13 W的采集節點供電要求，提高了模擬器信號采集系統的通用性和標準化程度，避免了以往數據采集節點單獨繁瑣的電源設計。
Abstract:
Aiming at the complexity of large avion simulation and controlling，the simulator cabin distribute data collecting and control system was designed. This system is the application of RCM5700 on Ethernet. Based on this system，PoE technique that makes Ethernet can also provide power were expounded with emphasis and included FAUX design the PoE Resolution was realized. To achieve the requirement of this system，LM5073 and LM5576 were used to DC-DC switch. From the data of experiment，the design filled the requirement of power-need of node whose power was lower than 13W. The application of the technique can advance the degree of simulation data collections currency and standardization and avoid designing additional power system.
標簽：
以太網
分布式
數據采集
控制系統
上傳時間：
2013-11-09
上傳用戶：xyipie
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The NCV7356 is a physical layer device for a single wire data linkcapable of operating with various Carrier Sense Multiple Accesswith Collision Resolution (CSMA/CR) protocols such as the BoschController Area Network (CAN) version 2.0. This serial data linknetwork is intended for use in applications where high data rate is notrequired and a lower data rate can achieve cost reductions in both thephysical media components and in the microprocessor and/ordedicated logic devices which use the network.The network shall be able to operate in either the normal data ratemode or a high-speed data download mode for assembly line andservice data transfer operations. The high-speed mode is onlyintended to be operational when the bus is attached to an off-boardservice node. This node shall provide temporary bus electrical loadswhich facilitate higher speed operation. Such temporary loads shouldbe removed when not performing download operations.The bit rate for normal communications is typically 33 kbit/s, forhigh-speed transmissions like described above a typical bit rate of83 kbit/s is recommended. The NCV7356 features undervoltagelockout, timeout for faulty blocked input signals, output blankingtime in case of bus ringing and a very low sleep mode current.
標簽：
CANBUS
7356
NCV
單線
上傳時間：
2013-10-24
上傳用戶：s藍莓汁
-
There has long been a need for portable ultrasoundsystems that have good Resolution at affordable costpoints. Portable systems enable healthcare providersto use ultrasound in remote locations such asdisaster zones, developing regions, and battlefields,where it was not previously practical to do so.
標簽：
Xilinx
便攜式
超聲系統
器件
上傳時間：
2015-01-01
上傳用戶：hfnishi
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This application note describes the implementation of a two-dimensional Rank Order filter. Thereference design includes the RTL VHDL implementation of an efficient sorting algorithm. Thedesign is parameterizable for input/output precision, color standards, filter kernel size,maximum horizontal Resolution, and implementation options. The rank to be selected can bemodified dynamically, and the actual horizontal Resolution is picked up automatically from theinput synchronization signals. The design has a fully synchronous interface through the ce, clk,and rst ports.
標簽：
XAPP
953
二維
濾波器
上傳時間：
2013-12-14
上傳用戶：逗逗666
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Frequently, voltage reference stability and noise defi nemeasurement limits in instrumentation systems. In particular,reference noise often sets stable Resolution limits.Reference voltages have decreased with the continuingdrop in system power supply voltages, making referencenoise increasingly important. The compressed signalprocessing range mandates a commensurate reductionin reference noise to maintain Resolution. Noise ultimatelytranslates into quantization uncertainty in A to D converters,introducing jitter in applications such as scales, inertialnavigation systems, infrared thermography, DVMs andmedical imaging apparatus. A new low voltage reference,the LTC6655, has only 0.3ppm (775nV) noise at 2.5VOUT.Figure 1 lists salient specifi cations in tabular form. Accuracyand temperature coeffi cient are characteristic ofhigh grade, low voltage references. 0.1Hz to 10Hz noise,particularly noteworthy, is unequalled by any low voltageelectronic reference.
標簽：
低噪聲
電壓基準
噪聲測量
上傳時間：
2013-10-30
上傳用戶：wxhwjf
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This application note discusses a variety of approaches for interfacing analog signals to 5V powered systems. Synthesizing a "rail-to-rail" op amp and scaling techniques for A/D converters are covered. A voltage-to-frequency converter, applicable where high Resolution is required, is also presented.
標簽：
微處理器
系統接口
上傳時間：
2013-10-12
上傳用戶：181992417
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C# Network Programming by Richard Blum ISBN:0782141765 Sybex ?2003 (647 pages) This book helps newcomers get started with a look at the basics of network programming as they relate to C#, including the language抯 network classes, the Winsock interface, and DNS Resolution.
標簽：
Programming
0782141765
Network
Richard
上傳時間：
2014-01-06
上傳用戶：WMC_geophy
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RW - Read & Write utility, for hardware engineers, firmware (BIOS) engineers, driver developers, QA engineers, performance test engineers, diagnostic engineers, etc., This utility access almost all the computer hardware, including PCI (PCI Express), PCI Index/Data, Memory, Memory Index/Data, I/O Space, I/O Index/Data, Super I/O, Clock Generator, DIMM SPD, SMBus Device, CPU MSR Registers, ATA/ATAPI Identify Data, ACPI Tables Dump (include AML decode), Embedded Controller, USB Information and LPT Remote Access. And also an Command Window is provided to access hardware manually.
Website1: http://rw.net-forces.com/
Website2: http://home.kimo.com.tw/ckimchan.tw/
Website3: http://jacky5488.myweb.hinet.net/
For best view, please change the screen Resolution to 1024 x 768 (or above) pixels.
標簽：
engineers
developers
firmware
hardware
上傳時間：
2013-12-22
上傳用戶：王楚楚
