本文選題：嵌入式 + 機(jī)頂盒　； 參考：《成都理工大學(xué)》2012年碩士論文

【摘要】：隨著計(jì)算機(jī)技術(shù)及集成電路技術(shù)的發(fā)展,嵌入式系統(tǒng)無(wú)疑是當(dāng)今最熱門最有發(fā)展?jié)摿Φ腎T應(yīng)用領(lǐng)域之一，已經(jīng)深入到我們生活的各個(gè)方面。各種各樣的嵌入式產(chǎn)品層出不窮，像我們手中常見的手機(jī)、MP3播放機(jī)、可視電話、機(jī)頂盒等等都是典型的嵌入式系統(tǒng)設(shè)備，給我們的生活和工作帶來(lái)了很大的便利。 數(shù)字電視機(jī)頂盒是一種依靠電視網(wǎng)絡(luò)終端提供綜合信息服務(wù)的家電設(shè)備，它是模擬電視向數(shù)字電視過(guò)渡的重要媒介，目前機(jī)頂盒除了能夠?qū)?shù)字信號(hào)轉(zhuǎn)換成模擬信號(hào)為模擬電視提供可靠的聲音、圖像使用戶能在現(xiàn)有電視機(jī)上觀看數(shù)字電視節(jié)目之外，還能夠通過(guò)網(wǎng)絡(luò)進(jìn)行交互式數(shù)字化娛樂、教育和商業(yè)化活動(dòng)。 現(xiàn)實(shí)中的機(jī)頂盒不僅功能強(qiáng)大，而且交互能力極強(qiáng)，對(duì)數(shù)據(jù)的需求也是越來(lái)越大。在沒有將數(shù)據(jù)庫(kù)的思想引入到機(jī)頂盒之前，對(duì)于數(shù)據(jù)的處理都是建立文件系統(tǒng)或者是通過(guò)鏈表來(lái)處理的，建立文件系統(tǒng)需要頻繁的對(duì)FLASH進(jìn)行操作，這樣不僅速度慢，而且多次擦除還會(huì)影響到FLASH的壽命。對(duì)于建立鏈表的方式，當(dāng)數(shù)據(jù)量很大的時(shí)候，特別是數(shù)據(jù)關(guān)系比較復(fù)雜的時(shí)候，維護(hù)是一個(gè)很大的問題。所以在機(jī)頂盒中引入數(shù)據(jù)庫(kù)的思想是很有必要的，可以將研發(fā)人員從數(shù)據(jù)的管理中解脫出來(lái)。SQLite作為高性能小型嵌入式數(shù)據(jù)庫(kù)的典型代表，植入機(jī)頂盒中是一個(gè)不錯(cuò)的選擇。 本人通過(guò)對(duì)目前常用機(jī)頂盒的了解與研究，介紹了功能強(qiáng)大的機(jī)頂盒的軟硬件架構(gòu)，重點(diǎn)介紹了軟件架構(gòu)，對(duì)上層應(yīng)用，，中間件的設(shè)計(jì)做了比較全面的分析。深入分析了數(shù)據(jù)庫(kù)在機(jī)頂盒中的應(yīng)用，成功的將SQLite3植入機(jī)頂盒中并將一些常用的接口進(jìn)行了解析，擴(kuò)展并優(yōu)化，從而使應(yīng)用更加的方便。 本論文研究的SQLite3在機(jī)頂盒中的應(yīng)用，經(jīng)個(gè)人和專業(yè)機(jī)構(gòu)的嚴(yán)格測(cè)試。達(dá)到預(yù)期。
[Abstract]:With the development of computer technology and integrated circuit technology, embedded system is undoubtedly one of the most popular and potential IT application fields, which has penetrated into every aspect of our life. A variety of embedded products emerge in endlessly, such as our common mobile phone MP3 player, videophone, set-top box and so on are typical embedded system equipment, Digital TV set-top box is a kind of household appliance equipment which relies on TV network terminal to provide comprehensive information service. It is an important medium for the transition from analog television to digital television. At present, in addition to converting digital signals into analog signals to provide reliable sound for analog television, the set-top box enables users to watch digital television programs on existing television sets, as well as interactive digital entertainment through the network. Education and commercial activities. The real set-top box is not only powerful, but also very strong interactive ability, the demand for data is also growing. Before the idea of database is introduced to the set-top box, the processing of the data is to establish file system or to process it by linked list. The establishment of file system requires frequent operation of flash, which is not only slow. And multiple erasures will also affect the life of flash. When the amount of data is very large, especially when the data relationship is complex, maintenance is a big problem. So it is very necessary to introduce the idea of database in the set-top box. We can free the R & D personnel from the data management. SQLite is the typical representative of the high performance small embedded database. Implantation of set-top box is a good choice. Through the understanding and research of the commonly used set-top box, this paper introduces the software and hardware architecture of the powerful set-top box, especially the software architecture, and the application to the upper layer. The design of middleware is analyzed comprehensively. The application of database in STB is deeply analyzed, and SQLite3 is implanted into STB successfully, and some commonly used interfaces are parsed, expanded and optimized to make the application more convenient. It has been strictly tested by individuals and professional organizations. Live up to expectations.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TP311.138;TP368.1

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