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簡(jiǎn)介：分類號(hào)分類號(hào)TN30423TN30423,TN306TN306單位代碼單位代碼1011010110學(xué)號(hào)S20070496S20070496中北大學(xué)碩士學(xué)位論文基于基于GAASHEMTGAASHEMT嵌入式嵌入式懸臂梁懸臂梁質(zhì)量塊結(jié)質(zhì)量塊結(jié)構(gòu)的力敏特性研究構(gòu)的力敏特性研究碩士研究生碩士研究生侯婷婷侯婷婷指導(dǎo)教師指導(dǎo)教師薛晨陽薛晨陽學(xué)科專業(yè)學(xué)科專業(yè)微納技術(shù)及儀器微納技術(shù)及儀器20102010年3月2525日基于基于GAASHEMTGAASHEMT嵌入式嵌入式懸臂梁懸臂梁質(zhì)量塊結(jié)構(gòu)的力敏特性研究質(zhì)量塊結(jié)構(gòu)的力敏特性研究中北大學(xué)中北大學(xué)侯婷婷侯婷婷中北大學(xué)學(xué)位論文原創(chuàng)性聲明本人鄭重聲明本人鄭重聲明所呈交的學(xué)位論文所呈交的學(xué)位論文，是本人在指導(dǎo)教師的指導(dǎo)下是本人在指導(dǎo)教師的指導(dǎo)下，獨(dú)立進(jìn)行研究所取得的成果立進(jìn)行研究所取得的成果。除文中已經(jīng)注明引用的內(nèi)容外除文中已經(jīng)注明引用的內(nèi)容外，本論文不包含本論文不包含其他個(gè)人或集體已經(jīng)發(fā)表或撰寫過的科研成果其他個(gè)人或集體已經(jīng)發(fā)表或撰寫過的科研成果。對(duì)本文的研究作出重要貢對(duì)本文的研究作出重要貢獻(xiàn)的個(gè)人和集體獻(xiàn)的個(gè)人和集體，均已在文中以明確方式標(biāo)明均已在文中以明確方式標(biāo)明。本聲明的法律責(zé)任由本人本聲明的法律責(zé)任由本人承擔(dān)承擔(dān)。論文作者簽名論文作者簽名日期日期關(guān)于學(xué)位論文使用權(quán)的說明關(guān)于學(xué)位論文使用權(quán)的說明本人完全了解中北大學(xué)有關(guān)保管本人完全了解中北大學(xué)有關(guān)保管、使用學(xué)位論文的規(guī)定使用學(xué)位論文的規(guī)定，其中包括其中包括①學(xué)校有權(quán)保管學(xué)校有權(quán)保管、并向有關(guān)部門送交學(xué)位論文的原件與復(fù)印件并向有關(guān)部門送交學(xué)位論文的原件與復(fù)印件；②學(xué)校學(xué)?？梢圆捎糜坝∫圆捎糜坝?、縮印或其它復(fù)制手段復(fù)制并保存學(xué)位論文縮印或其它復(fù)制手段復(fù)制并保存學(xué)位論文；③學(xué)?？稍试S學(xué)學(xué)?？稍试S學(xué)位論文被查閱或借閱位論文被查閱或借閱；④學(xué)校可以學(xué)術(shù)交流為目的學(xué)?？梢詫W(xué)術(shù)交流為目的，復(fù)制贈(zèng)送和交換學(xué)位復(fù)制贈(zèng)送和交換學(xué)位論文論文；⑤學(xué)?？梢怨紝W(xué)位論文的全部或部分內(nèi)容學(xué)?？梢怨紝W(xué)位論文的全部或部分內(nèi)容（保密學(xué)位論文在解密保密學(xué)位論文在解密后遵守此規(guī)定后遵守此規(guī)定）。）。簽名日期日期導(dǎo)師簽名導(dǎo)師簽名日期日期

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簡(jiǎn)介：上海交通大學(xué)碩士學(xué)位論文基于DCT的CFC人臉識(shí)別算法在嵌入式系統(tǒng)上的研究與實(shí)現(xiàn)姓名汪偉申請(qǐng)學(xué)位級(jí)別碩士專業(yè)模式識(shí)別與智能系統(tǒng)指導(dǎo)教師楊新20050101上海交通大學(xué)碩士學(xué)位論文2005年1月II上海交通大學(xué)學(xué)位論文版權(quán)使用授權(quán)書本學(xué)位論文作者完全了解學(xué)校有關(guān)保留使用學(xué)位論文的規(guī)定同意學(xué)校保留并向國(guó)家有關(guān)部門或機(jī)構(gòu)送交論文的復(fù)印件和電子版允許論文被查閱和借閱本人授權(quán)上海交通大學(xué)可以將本學(xué)位論文的全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫進(jìn)行檢索可以采用影印縮印或掃描等復(fù)制手段保存和匯編本學(xué)位論文保密在解密后適用本授權(quán)書本學(xué)位論文屬于不保密請(qǐng)?jiān)谝陨戏娇騼?nèi)打?qū)W位論文作者簽名汪偉指導(dǎo)教師簽名楊新日期2005年1月14日日期2005年1月14日

簡(jiǎn)介：北京郵電大學(xué)碩士學(xué)位論文基于COMIP與ΜCLINUX的嵌入式系統(tǒng)研究姓名單甪申請(qǐng)學(xué)位級(jí)別碩士專業(yè)機(jī)械設(shè)計(jì)及理論指導(dǎo)教師鄧中亮20060326J塞塑皇查堂旦塞生笙壅董王璺魚堂堡皇匹I堅(jiān)笪壁壘壅至竺塑塑壅RESEARCHONTHEEMBEDDEDSYSTEMBASEDONCOMIPANDPCLINUXOSABSTRACTW1MTHERAPIDDEVELOPMENTOFCOMMUNICATIONSTECHNOLOGY,THEPROCESSINGCAPABILITY,EMCIENCYANDREALTIMEPERFORMANCEOFCOMMUNICATIONSSYSTEMWILLBEHI曲ERANDHIGHER．NEHIGHPOWEREDEMBEDDEDPROCESSOR,PERIPHERALMODULEANDEMBEDDEDOSARENEEDEDINCOMMUNICATIONSSYSTEM．THEEMBEDDEDSYSTEMTHATISBASEDON“COM口”ANDPCLINUX0SWASDISCUSSEDASTHEOBJECTINTHISDISSERTATION．BASEDONTHIS，THEMETHODANDTHOUGHTOFCONSTRUCTINGTHEHARDREAL．TIMEEMBEDDEDSYSTEMWERERAISED．IN吐LISDISSERTATION．THECHARACTERISTICOFEMBEDDEDSYSTEMWASANALYSED，ANDTHEDESIGNOFSYSTEMFRAMEWORKANDHARDWARETHATWASBASEDUPONREQUIREMENTOFSYSTEMANDHIGHCAPABILITY,HI曲INTEGRATINGDEGREEANDMULTIFUNCTIONOFCO姍WASACCOMPLISHED．衛(wèi)1EPROBLEMABOUTIMPEDANCEDISCONTINUITYBETWEENSUBBOARDANDMOTHERBOARDANDASSIGNMENTOFPOWERSUPPLYWERESOLVED．111EREDUCTION，CONFIGURATIONANDPORTINGOFTHESTANDARDIXCLINUXKERNELANDTHEBOOTLOADERWEREACCOMPLISHEDCONSIDERINGHARDWARECONSTRUCTUREOFSYSTEM．THEGCLINUXKEMELWASRECONSTRUCTEDTOIMPROVEREAL．TIMEPERFORMANCEINORDERTOFULFILTHEDEMANDOFREALTIMEPERFORMANCEINTHECOMMUNICATIONSYSTEM，ANDTHEMETHODANDTHOUGHTOFCONSTRUCTINGHARDREALTIMEKERNELTHATWASCOMPOSEDBYREALTIMESCHEDULERBASEDONTHE‘‘BITMAP”ALGORITHM,THEPREEMPTIONFUNCTIONANDTHETHREADMANAGEMENTMODULEWERERAISED．FINALLY,THECAPABILITIESOFTHREADPROCESSINGANDSEMAPHOREPROCESSINGOFHARDREALTIMEUCLINUXKERNELWERETESTED，ANDCOMPAREDWITHTHESTANDARDILCLINUXKERNELANDVXWORKSTOGETIMPERSONALEVALUATIONOFHARDREALTIMEKERNEL．KEYWORDSEMBEDDEDSYSTEMCOMIPIXCLINUXPORTINGREALTIMEPERFORMANCE111

簡(jiǎn)介：I上海交通大學(xué)碩士學(xué)位論文上海交通大學(xué)碩士學(xué)位論文基于基于ARM的嵌入式的嵌入式H264軟解碼器的實(shí)現(xiàn)與優(yōu)化軟解碼器的實(shí)現(xiàn)與優(yōu)化碩士姓名曹麗麗專業(yè)電路與系統(tǒng)學(xué)號(hào)1070349005研究方向嵌入式系統(tǒng)設(shè)計(jì)指導(dǎo)導(dǎo)師戎蒙恬教授上海交通大學(xué)電子信息學(xué)院2009年12月III基于基于ARM的嵌入式的嵌入式H264軟解碼器的實(shí)現(xiàn)與優(yōu)化軟解碼器的實(shí)現(xiàn)與優(yōu)化摘要H264是ITUT國(guó)際電信聯(lián)盟和ISO國(guó)際標(biāo)準(zhǔn)化組織聯(lián)合推出的新一代視頻編碼標(biāo)準(zhǔn)。該標(biāo)準(zhǔn)采用了許多不同于以往標(biāo)準(zhǔn)的先進(jìn)技術(shù)，在追求更高的編碼效率和簡(jiǎn)潔的表達(dá)形式同時(shí)，也提供了非常好的視頻質(zhì)量，是當(dāng)前最高效的視頻壓縮方法。目前，H264編解碼器在硬件資源有限的嵌入式環(huán)境下的優(yōu)化實(shí)現(xiàn)已成為科研領(lǐng)域和產(chǎn)業(yè)界關(guān)注的熱點(diǎn)問題。本文在研究H264編碼標(biāo)準(zhǔn)和ARM處理器系統(tǒng)架構(gòu)的基礎(chǔ)上，以H264基本檔次和主要檔次解碼器為主要研究對(duì)象，在基于ARM處理器的嵌入式開發(fā)平臺(tái)上開展了優(yōu)化實(shí)現(xiàn)方面的研究。本文首先在ARM平臺(tái)上構(gòu)建起嵌入式系統(tǒng)環(huán)境和視頻播放系統(tǒng)，其次進(jìn)行H264的解碼移植，實(shí)現(xiàn)了嵌入式環(huán)境下的H264解碼播放。然而，H264編解碼效率的提高是以運(yùn)算復(fù)雜度的增大為代價(jià)的，對(duì)硬件資源有限的嵌入式環(huán)境，移植后的解碼器不能滿足實(shí)時(shí)解碼的要求。本文經(jīng)過仔細(xì)的測(cè)試分析，總結(jié)出未經(jīng)優(yōu)化的解碼器在嵌入式環(huán)境下的性能瓶頸和優(yōu)化思路。然后根據(jù)ARM處理器的架構(gòu)特點(diǎn)，以減少內(nèi)存搬移和精簡(jiǎn)指令數(shù)量為目標(biāo)，從C代碼層面和匯編層面對(duì)整個(gè)程序的結(jié)構(gòu)和各個(gè)功能模塊進(jìn)行優(yōu)化。同時(shí)，本文針對(duì)ARM存儲(chǔ)器特點(diǎn)，進(jìn)行了內(nèi)存的合理安排，提出了一種“窗口數(shù)據(jù)讀取方式”，實(shí)現(xiàn)各模塊間數(shù)據(jù)的內(nèi)部傳遞，實(shí)驗(yàn)證明這種方法進(jìn)一步提高了解碼

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