基于Windows CE的嵌入式開發研究 Research of Embedded Development Based on Windows CE 【摘要】 近年來基于嵌入式系統的數字化產品在全球范圍內得到了突飛猛進的發展，嵌入式技術已成為一個研究熱點和消費熱點。而Windows CE由于它的多任務、實時性、模塊化、強大的通信能力等特點，在嵌入式系統的諸多領域都有了廣泛的應用。本文首先探討了嵌入式系統的特點，分類，前景，然后對各種嵌入式操作系統和Windows CE的特點及開發工具進行分析比較，接著介紹一個我們在Microsoft Windows CE 5.0環境下基于eBoxII開發的智能家居安防保全系統eDog。eDog 可以通過攝像頭將采集到的實時視頻圖像進行運動檢測，當發現有運動產生時，通過撥打電話等多種方式自動向用戶發出警報，同時將實時捕獲的圖像上傳到ftp 服務器。文章的最后詳細闡述了eDog的圖像采集模塊，運動圖像檢測模塊，圖像壓縮模塊，FTP上傳模塊的實現過程，并對我們所提出的運動檢測算法，視頻捕捉算法等做了詳細的說明。
標簽： Windows Development Research Embedded
上傳時間： 2014-11-27
上傳用戶：zm7516678
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.
標簽： clock-based associated different confusing
上傳時間： 2015-12-02
上傳用戶：sssl
Jitter is extremely important in systems using PLL-based clock drivers. The effects of jitter range 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.
標簽： extremely PLL-based important drivers
上傳時間： 2014-11-25
上傳用戶：asddsd
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.
標簽： Semiconductor application generators PLL-based
上傳時間： 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 VISUAL INSPECTION SYSTEMS
標簽： IMPLEMENTATION REQUIREMENTS FPGA-BASED AUTOMATED
上傳時間： 2013-12-13
上傳用戶：litianchu
Fractal Explorer GUI-based program for exploring and studying the most common form of fractals, chaotic systems and fractional dimension systems
標簽： GUI-based exploring Explorer fractals
上傳時間： 2013-11-25
上傳用戶：ljmwh2000
Generates Rayleigh fading processes based on autoregressive models.
標簽： autoregressive Generates processes Rayleigh
上傳時間： 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 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
標簽： development acquisition introduced article
上傳時間： 2015-12-07
上傳用戶：lijianyu172
IPCAM Design document based on TI DaVinci
標簽： document DaVinci Design IPCAM
上傳時間： 2013-12-26
上傳用戶：songrui
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.
標簽： priority preemptive inversion problem
上傳時間： 2015-12-14
上傳用戶：氣溫達上千萬的
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