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  • 基于Windows CE的嵌入式開發(fā)研究 Research of Embedded Development Based on Windows CE 【摘要】 近年來基于嵌入式系統(tǒng)的數(shù)字化產(chǎn)品在

    基于Windows CE的嵌入式開發(fā)研究 Research of Embedded Development Based on Windows CE 【摘要】 近年來基于嵌入式系統(tǒng)的數(shù)字化產(chǎn)品在全球范圍內(nèi)得到了突飛猛進(jìn)的發(fā)展,嵌入式技術(shù)已成為一個(gè)研究熱點(diǎn)和消費(fèi)熱點(diǎn)。而Windows CE由于它的多任務(wù)、實(shí)時(shí)性、模塊化、強(qiáng)大的通信能力等特點(diǎn),在嵌入式系統(tǒng)的諸多領(lǐng)域都有了廣泛的應(yīng)用。本文首先探討了嵌入式系統(tǒng)的特點(diǎn),分類,前景,然后對(duì)各種嵌入式操作系統(tǒng)和Windows CE的特點(diǎn)及開發(fā)工具進(jìn)行分析比較,接著介紹一個(gè)我們?cè)贛icrosoft Windows CE 5.0環(huán)境下基于eBoxII開發(fā)的智能家居安防保全系統(tǒng)eDog。eDog 可以通過攝像頭將采集到的實(shí)時(shí)視頻圖像進(jìn)行運(yùn)動(dòng)檢測(cè),當(dāng)發(fā)現(xiàn)有運(yùn)動(dòng)產(chǎn)生時(shí),通過撥打電話等多種方式自動(dòng)向用戶發(fā)出警報(bào),同時(shí)將實(shí)時(shí)捕獲的圖像上傳到ftp 服務(wù)器。文章的最后詳細(xì)闡述了eDog的圖像采集模塊,運(yùn)動(dòng)圖像檢測(cè)模塊,圖像壓縮模塊,F(xiàn)TP上傳模塊的實(shí)現(xiàn)過程,并對(duì)我們所提出的運(yùn)動(dòng)檢測(cè)算法,視頻捕捉算法等做了詳細(xì)的說明。

    標(biāo)簽: Windows Development Research Embedded

    上傳時(shí)間: 2014-11-27

    上傳用戶:zm7516678

  • There are many different (and often confusing) terms associated with clock-based devices. This appl

    There are many different (and often confusing) terms associated with clock-based devices. This application note attempts to clarify these terms, and hence serves as a comprehensive reference on clock terminology. This application note can be divided into two sections. The first section describes and distinguishes between various clock sources available today. The second section defines and distinguishes between various parameters used to describe clocks. This section also provides methods of measuring some of these parameters.

    標(biāo)簽: clock-based associated different confusing

    上傳時(shí)間: 2015-12-02

    上傳用戶:sssl

  • Jitter is extremely important in systems using PLL-based clock drivers. The effects of jitter range

    Jitter is extremely important in systems using PLL-based clock drivers. The effects of jitter range from not having any effect on system operation to rendering the system completely non-functional. This application note provides the reader with a clear understanding of jitter in high-speed systems. It introduces the reader to various kinds of jitter in high-speed systems, their causes and their effects, and methods of reducing jitter. This application note will concentrate on jitter in PLL-based frequency synthesizers.

    標(biāo)簽: extremely PLL-based important drivers

    上傳時(shí)間: 2014-11-25

    上傳用戶:asddsd

  • Cypress Semiconductor makes a variety of PLL-based clock generators. This application note provides

    Cypress Semiconductor makes a variety of PLL-based clock generators. This application note provides a set of recommendations to optimize usage of Cypress clock devices in a system. The application note begins with recommended termination techniques for clock generators. Subsequently, power supply filtering and bypassing is discussed. Finally, the application note provides some recommendations on board layout.

    標(biāo)簽: Semiconductor application generators PLL-based

    上傳時(shí)間: 2013-12-20

    上傳用戶:水中浮云

  • AN FPGA-BASED IMPLEMENTATION FOR MEDIAN FILTER MEETING THE REAL-TIME REQUIREMENTS OF AUTOMATED VIS

    AN FPGA-BASED IMPLEMENTATION FOR MEDIAN FILTER MEETING THE REAL-TIME REQUIREMENTS OF AUTOMATED VISUAL INSPECTION SYSTEMS

    標(biāo)簽: IMPLEMENTATION REQUIREMENTS FPGA-BASED AUTOMATED

    上傳時(shí)間: 2013-12-13

    上傳用戶:litianchu

  • Fractal Explorer GUI-based program for exploring and studying the most common form of fractals, c

    Fractal Explorer GUI-based program for exploring and studying the most common form of fractals, chaotic systems and fractional dimension systems

    標(biāo)簽: GUI-based exploring Explorer fractals

    上傳時(shí)間: 2013-11-25

    上傳用戶:ljmwh2000

  • Generates Rayleigh fading processes based on autoregressive models.

    Generates Rayleigh fading processes based on autoregressive models.

    標(biāo)簽: autoregressive Generates processes Rayleigh

    上傳時(shí)間: 2015-12-06

    上傳用戶:無聊來刷下

  • The development of a data acquisition card based on USB bus is introduced in this article.It first d

    The development of a data acquisition card based on USB bus is introduced in this article.It first describes the configuration and principle of this card in the part of hardware design,and then the application program and device driver in the part of software design.Data acquisition program in firmware is also discussed.Finally,this data acquisition card is tested and evaluated in a program developed by Lab Windows CVI,which shows that this car is stable and reliable

    標(biāo)簽: development acquisition introduced article

    上傳時(shí)間: 2015-12-07

    上傳用戶:lijianyu172

  • IPCAM Design document based on TI DaVinci

    IPCAM Design document based on TI DaVinci

    標(biāo)簽: document DaVinci Design IPCAM

    上傳時(shí)間: 2013-12-26

    上傳用戶:songrui

  • In a preemptive priority based RTOS, priority inversion problem is among the major sources of deadl

    In a preemptive priority based RTOS, priority inversion problem is among the major sources of deadline violations. Priority inheritance protocol is one of the approaches to reduce priority inversion. Unfortunately, RTOS like uC/OS can’t support priority inheritance protocol since it does not allow kernel to have multiple tasks at the same priority. Although it has different ways to avoid priority inversion such as priority ceiling protocol, developers still have some difficulties in programming real time applications with it. In this paper, we redesign the uC/OS kernel to provide the ability to support round robin scheduling and implement priority inheritance semaphore on the modified kernel. As result, we port new kernel with priority inheritance semaphore to evaluation board, and evaluate the execution time of each of the kernel service as well as verify the operations of our implementation.

    標(biāo)簽: priority preemptive inversion problem

    上傳時(shí)間: 2015-12-14

    上傳用戶:氣溫達(dá)上千萬的

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