數(shù)字電視機頂盒關(guān)鍵技術(shù)研究與系統(tǒng)實現(xiàn)

數(shù)字電視機頂盒關(guān)鍵技術(shù)研究與系統(tǒng)實現(xiàn)摘要數(shù)碼TV體系替代模擬TV體系是必須的趨向。數(shù)碼TV是21世紀極具開發(fā)遠景的新式行業(yè)。中國當局還正在主動謀劃從模擬TV到數(shù)碼TV的轉(zhuǎn)變?；谖覈M電視的社會擁有量達到4億臺的國情，采用模擬電視加數(shù)字電視機頂盒收看數(shù)碼TV的樣式變成中國模擬TV往數(shù)碼TV轉(zhuǎn)變的過渡樣式。盡管中國數(shù)碼TV機上盒歷經(jīng)了十幾年的開發(fā)，然而在數(shù)碼TV整體機依舊沒有遍及的現(xiàn)在，對數(shù)碼TV機上盒的探究依舊擁有真實價值。另外，對數(shù)碼TV機上盒的開發(fā)也可推進多媒體處置器的開發(fā)。在該環(huán)境下，此文對數(shù)碼TV機上盒的有關(guān)技能與軟硬件策劃實施了詳盡的探究。此文關(guān)鍵描述了鑒于Hi2016芯片的數(shù)碼TV機上盒的策劃和完成，重點闡述了數(shù)碼TV機上盒的硬件策劃和完成。此文最先簡明描述了數(shù)碼TV在我國與海外的開發(fā)現(xiàn)況及數(shù)碼TV機上盒的效用和開發(fā)現(xiàn)況。第二章介紹了有線數(shù)字電視系統(tǒng)（DVB-C）的相關(guān)理論與MPEG-2傳輸標準。第三章闡述了數(shù)字電視機頂盒的基本功能、結(jié)構(gòu)及關(guān)鍵技術(shù)。接著第四章提出了機頂盒系統(tǒng)的總體設(shè)計方案，包括硬件模塊的芯片選型和軟件結(jié)構(gòu)的提出。第五章詳細介紹了機頂盒的各硬件模塊的實現(xiàn)過程，包括QAM信道解調(diào)模塊、基于Hi2016的主控模塊、存儲模塊和音視頻輸出模塊。最后對本文所作的工作進行了總結(jié)以及對今后機頂盒發(fā)展前景作了展望。關(guān)鍵詞：數(shù)字電視機頂盒MPEG-2Hi2016

AbstractItisthecertaintrendthattheanalogtelevisionsystemwillbereplacedbythedigitaltelevisionsystem.DigitalTVistheemergingindustrywhichhasthebestfutureinthe21stcentury.OurgovernmentispreparingfortheconveR-Sionfromanalogtelevisiontodigitaltelevisionactively.Therearemorethan4billionsofanalogTVsetsinChina,thereforeitisagoodchoicetouseexistinganalogTVsetsequippedwithSTB(SetTopBox)towatchdigitalTVprograms.STBhasbeendevelopedformorethanadecadeinChina,butitisusefultostudyonthedesignofSTBsincetheanalog-digitalhybridIDTV(IntegratedDigitalTelevision)isnotcomeintobeing.Meanwhile,studiesonSTBcanacceleratethedevelopmentofmultimedia.Againstthisbackground,thisthesisstudiesthecorrelationtechniqueontheSTBandthehardwareandsoftwaredesignindetail.ThethesismainlydiscussesDesignandimplementation,putstheemphasisonthedesignandimplementationofSTB.Firstly,thethesisintroducesthepresentofdevelopmentsituationofthedigitalTVandtheSTB.TherelatedtheoriesofDigitalVideoBroadcasting-Cable(DVB-C)andMPEG-2transportstandardsareintroducedinchaptertwo.Andthen,thethesisanalyzesthebasicfunctions,structureandkeytechnologiesofSTBinchapterthree.Afterthat,thethesisputsforwardablueprintofSTB,includingselectingchipsforhardwaremodulesandproposingsoftwarestructure.Theimplementationofeverymoduleisdiscusseddetailedinchapterfive.ThemodulesincludeQAMdemodulator,themaincontrolmodulebasedonHi2016,thememoryandA/Voutput.Finally,thethesissummarizestheworkhavebeendone,andprospectstheforegroundofSTB.Keywords:DigitalTVSTBMPEG-2Hi2016

目錄第一章緒論 致謝此文是在老師的用心教導(dǎo)與指引下實現(xiàn)的，文章從主題、思路到完稿全部滲入了導(dǎo)師的辛勞與血汗；