【摘要】：廣告的產(chǎn)生是商業(yè)發(fā)展的必然,它的出現(xiàn)極大的促進(jìn)了商業(yè)的繁榮。傳統(tǒng)的廣告業(yè)借助的媒介一般是報(bào)刊、廣播、電視或網(wǎng)絡(luò)。但隨著現(xiàn)代科技的迅猛發(fā)展,廣告機(jī)作為新的傳播媒介逐漸走入人們視野。廣告機(jī)以較低的成本和高效的展示方式,掀起了廣告業(yè)發(fā)展的新篇章。 本課題研究的是基于嵌入式Linux的廣告機(jī)系統(tǒng)。Linux是目前使用最廣泛的操作系統(tǒng)之一,由于它是開源的,這極大的降低了設(shè)計(jì)成本。而且Linux具有較強(qiáng)的可移植性,因此對(duì)于后續(xù)的開發(fā)也有較好的保證。 本文的主要研究?jī)?nèi)容為： (1)規(guī)劃了廣告機(jī)系統(tǒng)的設(shè)計(jì)方案。本設(shè)計(jì)采用Mini2440開發(fā)板作為系統(tǒng)的硬件開發(fā)平臺(tái),處理器S3C2440是基于ARM920T架構(gòu)的,具有速度快、功耗低、價(jià)格便宜等優(yōu)點(diǎn)。并且對(duì)軟件開發(fā)平臺(tái)做了詳細(xì)的介紹,包括Bootloader的選擇和嵌入式操作系統(tǒng)的選擇等。 (2)在Linux系統(tǒng)上建立了嵌入式交叉編譯環(huán)境,將編譯好的U-boot和嵌入式Linux內(nèi)核移植到開發(fā)板上。并建立了根文件系統(tǒng),移植了mplayer播放器,完成了廣告機(jī)系統(tǒng)應(yīng)用軟件開發(fā)平臺(tái)的搭建。 (3)本文設(shè)計(jì)的廣告機(jī)應(yīng)用程序采用了多線程編程技術(shù)。因此研究了多任務(wù)機(jī)制的特點(diǎn)以及為什么選擇多線程機(jī)制。并且學(xué)習(xí)了多線程的程序?qū)崿F(xiàn),包括線程的創(chuàng)建與終止、線程的互斥和同步。 (4)使用Qt編寫廣告機(jī)系統(tǒng)的應(yīng)用程序,并使用Qtopia編譯后移植到開發(fā)板上。結(jié)果表明,系統(tǒng)各模塊功能運(yùn)行正常,基本實(shí)現(xiàn)本文的設(shè)計(jì)目的。 本文設(shè)計(jì)的廣告機(jī)系統(tǒng)都是在Linux系統(tǒng)上進(jìn)行調(diào)試的,并最終在Mini2440開發(fā)板上實(shí)現(xiàn)。本論文研究的廣告機(jī)系統(tǒng),將廣告播放軟件移植到了嵌入式設(shè)備上,實(shí)現(xiàn)了對(duì)音視頻的播放,對(duì)解決傳統(tǒng)廣告形式成本過高的問題有實(shí)際的意義。
[Abstract]:Advertising is the inevitable development of business, it greatly promotes the prosperity of business. The traditional advertising industry usually relies on newspapers, radio, television or the Internet. However, with the rapid development of modern science and technology, advertising machine as a new media gradually into people's view. Advertising machine with low cost and efficient display, set off a new chapter in the development of advertising industry. This paper studies the advertising machine system based on embedded Linux. Linux is one of the most widely used operating systems at present. Because it is open source, this greatly reduces the design cost. Linux has strong portability, so it has a good guarantee for future development. The main contents of this paper are as follows: (1) the design scheme of advertising machine system is planned. The design adopts Mini2440 development board as the hardware development platform of the system. The processor S3C2440 is based on ARM920T architecture, which has the advantages of high speed, low power consumption and low price. The software development platform is introduced in detail, including the selection of bootloader and embedded operating system. (2) the embedded cross-compiling environment is established on Linux system. Transplant the compiled U-boot and embedded Linux kernel to the development board. The root file system is established, the mplayer player is transplanted, and the application software development platform of the advertisement machine system is built. (3) the application program of the advertisement machine designed in this paper adopts the multi-thread programming technology. Therefore, the characteristics of multitasking mechanism and why to choose multithreading mechanism are studied. And has learned the multithread program realization, including the thread creation and the termination, the thread mutual exclusion and the synchronization. (4) uses the QT to write the advertisement machine system application program, and uses the Qtopia compiles to transplant to the development board. The results show that the function of each module of the system is running normally and the design purpose of this paper is basically realized. The advertisement machine system designed in this paper is debugged on Linux system and finally implemented on Mini2440 development board. The advertisement machine system studied in this paper has transplanted the advertisement playing software to the embedded device, realized the audio and video playing, and has practical significance to solve the problem of the high cost of the traditional advertising form.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TP368.1;TP316.81

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