针对嵌入式机器视觉系统向独立化、智能化发展的要求，介绍了一种嵌入式视觉系统--智能相机。基于对智能相机体系结构、组成模块和图像采集、传输和处理技术的分析，对国内外的几款智能相机进行比较。综合技术发展现状，提出基于FPGA+DSP模式的硬件平台，并提出智能相机的发展方向。分析结果表明，该系统设计可以实现脱离PC运行，完成图像获取与分析，并作出相应输出。 Abstract: This paper introduced an embedded vision system-intelligent camera ，which was for embedded machine vision systems to an independent and intelligent development requirements. Intelligent camera architecture， component modules and image acquisition， transmission and processing technology were analyzed. After comparing integrated technology development of several intelligent cameras at home and abroad， the paper proposed the hardware platform based on FPGA+DSP models and made clear direction of development of intelligent cameras. On the analysis of the design， the results indicate that the system can run from the PC independently to complete the image acquisition and analysis and give a corresponding output.
上传时间： 2013-10-24
上传用户：bvdragon
为了在CDMA系统中更好地应用QDPSK数字调制方式，在分析四相相对移相（QDPSK)信号调制解调原理的基础上，设计了一种QDPSK调制解调电路，它包括串并转换、差分编码、四相载波产生和选相、相干解调、差分译码和并串转换电路。在MAX+PLUSⅡ软件平台上，进行了编译和波形仿真。综合后下载到复杂可编程逻辑器件EPM7128SLC84-15中，测试结果表明，调制电路能正确选相，解调电路输出数据与QDPSK调制输入数据完全一致，达到了预期的设计要求。 Abstract: In order to realize the better application of digital modulation mode QDPSK in the CDMA system， a sort of QDPSK modulation-demodulation circuit was designed based on the analysis of QDPSK signal modulation-demodulation principles. It included serial/parallel conversion circuit, differential encoding circuit, four-phase carrier wave produced and phase chosen circuit, coherent demodulation circuit, difference decoding circuit and parallel/serial conversion circuit. And it was compiled and simulated on the MAX+PLUSⅡ software platform,and downloaded into the CPLD of EPM7128SLC84-15.The test result shows that the modulation circuit can exactly choose the phase，and the output data of the demodulator circuit is the same as the input data of the QDPSK modulate. The circuit achieves the prospective requirement of the design.
上传时间： 2014-01-13
上传用户：qoovoop
通过分析流水线结构和单周期结构的片上网络路由器，提出了一种低延时片上网络路由器的设计，并在SMIC 0.13um Mixed-signal/RF 1.2V/3.3V工艺进行流片验证。芯片测试结果表明，该路由器可以在300 MHz时钟频率下工作，并且在相同负载下，与其他结构的路由器相比较，其能够在较低延时下完成数据包传送功能。
上传时间： 2014-12-28
上传用户：bakdesec
The Tri-Mode Ethernet MAC (TEMAC) UltraController-II module is a minimal footprint,embedded network processing engine based on the PowerPC™ 405 (PPC405) processor coreand the TEMAC core embedded within a Virtex™-4 FX Platform FPGA. The TEMACUltraController-II module connects to an external PHY through Gigabit Media IndependentInterface (GMII) and Management Data Input/Output (MDIO) interfaces and supports tri-mode(10/100/1000 Mb/s) Ethernet. Software running from the processor cache reads and writesthrough an On-Chip Memory (OCM) interface to two FIFOs that act as buffers between thedifferent clock domains of the PPC405 OCM and the TEMAC.
上传时间： 2013-10-26
上传用户：yuzsu
友善之臂的QtEmbedded实例教程 第一章 LINUX 图形用户界面 GUI 介绍.....................................................................................1 1.1 常用 GUI 介绍...................................................................................................................1 1.2 关于 Qt...............................................................................................................................2 1.3 Qt/Embedded 简介.............................................................................................................4 1.4 Qtopia 介绍.........................................................................................................................4 第二章 QT的安装..........................................................................................................................6 2.1 Qt X11 的安装....................................................................................................................6 2.2 Qt/Embedded 安装..............................................................................................................9 2.3 Qtopia 编译.......................................................................................................................11 第三章 QT的编程........................................................................................................................12 实验一 “Hello word！ ”Qt初探............................................................................................12 实验二 创建一个窗口并添加按钮.......................................................................................17 实验三 对象间通信：Signal 和 Slot 机制........................................................................20 实验四 菜单和快捷键...........................................................................................................29 实验五 工具条和状态栏.......................................................................................................38 实验六 鼠标和键盘事件.......................................................................................................48 实验七 对话框.......................................................................................................................63 实验八 Qt 中的绘图..............................................................................................................75 实验九 Qt 中的多线程编程..................................................................................................85 实验十 Qt 中的网络编程......................................................................................................97 第四章 QT常用工具的介绍...................................................................................................... 111 4.1 Qt 设计器（Qt Designer）............................................................................................ 111 4.2 Tmake..............................................................................................................................113 4.3 Qvfb ................................................................................................................................114
标签： QtEmbedded 教程
上传时间： 2013-12-21
上传用户：laozhanshi111
SYNC 引脚可以用来输出一个同步信号（synchronization signal），也可以在应用使来控制一个LED 灯的输出状态。：SYNC 端通过一个三极管或门电路来控制LED。
上传时间： 2013-11-11
上传用户：maizezhen
The C8051F020/1/2/3 devices are fully integrated mixed-signal System-on-a-Chip MCUs with 64 digital I/O pins (C8051F020/2) or 32 digital I/O pins (C8051F021/3). Highlighted features are listed below; refer to Table 1.1 for specific product feature selection.
上传时间： 2013-11-08
上传用户：lwq11
Linear Technology offers some of the highest performance RF and signal chain solutions for wireless and cellularinfrastructure. These products support worldwide standards including, LTE, WiMAX, GSM,W-CDMA, TD-SCDMA,CDMA, and CDMA2000. Other wireless systems include broadband microwave data links, secure communications,satellite receivers, broadband wireless access, wireless broadcast systems, RFID readers and cable infrastructure
上传时间： 2013-11-04
上传用户：kiklkook
Abstract: This application note describes system-level characterization and modeling techniques for radio frequency (RF) and microwavesubsystem components. It illustrates their use in a mixed-signal, mixed-mode system-level simulation. The simulation uses an RF transmitterwith digital predistortion (DPD) as an example system. Details of this complex system and performance data are presented.
上传时间： 2013-12-18
上传用户：onewq
提出了一种基于PIC16F877A微控制器和CC2500射频收发器芯片的低功耗、低成本RFID（Radio Frequency Identification， 无线射频识别）局域定位系统设计方法，介绍了系统的定位工作原理、主要硬件电路模块及定位算法的设计和实现。采用基于序列号对时隙数运算的排序算法有效解决了多标签识别碰撞的问题，基于射频辐射强度（Received Signal Strength Indication， RSSI）和圆周定位算法实现了基于RFID多标签系统的平面定位。实验测试表明，这种射频定位方法能够实现一定精度下的无线局域定位的功能。
上传时间： 2013-11-06
上传用户：weareno2
