發(fā)布時(shí)間：2018-05-18 16:11

  本文選題：機(jī)頂盒 + 廣告系統(tǒng)�。� 參考：《電子科技大學(xué)》2014年碩士論文

【摘要】：隨著國(guó)家數(shù)字電視整體轉(zhuǎn)換平移力度的加強(qiáng),各省,市以及各級(jí)廣電部門已完成了數(shù)字平移并積累了豐富的系統(tǒng)搭建、運(yùn)營(yíng)等方面的經(jīng)驗(yàn)。但數(shù)字電視平移項(xiàng)目投入成本相當(dāng)高,尤其終端機(jī)頂盒投入巨大,而目前的收入只有電視收視費(fèi),如何做好增值業(yè)務(wù),成為了廣電的一道難題。因此圖文廣告成為了廣電部門的重要收入來(lái)源之一。廣告系統(tǒng)的推出一方面有助于進(jìn)一步挖掘數(shù)字電視平臺(tái)的增值潛力,另一方面可以提升企業(yè)的競(jìng)爭(zhēng)力。本文主要圍繞著機(jī)頂盒廣告系統(tǒng)軟件功能設(shè)計(jì)與實(shí)現(xiàn)進(jìn)行討論。文中首先介紹了數(shù)字電視在國(guó)內(nèi)外的發(fā)展歷史和現(xiàn)狀,也介紹了機(jī)頂盒和機(jī)頂盒廣告系統(tǒng)對(duì)于目前數(shù)字電視業(yè)務(wù)推廣的重大意義和其特點(diǎn)。其次,介紹了與本系統(tǒng)相關(guān)的數(shù)字電視技術(shù)和標(biāo)準(zhǔn),包括DVB標(biāo)準(zhǔn),MPEG2標(biāo)準(zhǔn),PSI/SI標(biāo)準(zhǔn)。特別是對(duì)表的結(jié)構(gòu)、段、描述符以及MPEG2的私有段作了很詳細(xì)的說(shuō)明,這一部分是PSI/SI標(biāo)準(zhǔn)的重點(diǎn)。然后,基于本人對(duì)數(shù)字電視技術(shù)和標(biāo)準(zhǔn)的理解,深入研究了機(jī)頂盒的硬件結(jié)構(gòu)和軟件層次。對(duì)于組成機(jī)頂盒的主要硬件模塊的功能作了說(shuō)明,在此之上總結(jié)了機(jī)頂盒工作的原理,特別是解復(fù)用流程。軟件部分,首先對(duì)機(jī)頂盒軟件為何要分層實(shí)現(xiàn)做了說(shuō)明,然后詳細(xì)介紹了各層軟件模塊的功能。緊接著,詳細(xì)描述了本課題所實(shí)現(xiàn)的廣告系統(tǒng)的原理、分類展現(xiàn)形式及其特點(diǎn)。并且按數(shù)據(jù)接收和解析、任務(wù)管理、數(shù)據(jù)存儲(chǔ)和圖片顯示功能對(duì)系統(tǒng)進(jìn)行了模塊劃分。也對(duì)各系統(tǒng)模塊的調(diào)用關(guān)系、功能作用和接口分類做了比較全面的描述。廣告系統(tǒng)的實(shí)現(xiàn)部分,先是對(duì)系統(tǒng)的主要數(shù)據(jù)類型定義和數(shù)據(jù)結(jié)構(gòu)做了描述,然后詳細(xì)說(shuō)明了廣告系統(tǒng)數(shù)據(jù)的接收、更新、存儲(chǔ)和顯示是如何實(shí)現(xiàn)的。最后還列舉了廣告系統(tǒng)在實(shí)現(xiàn)以及實(shí)現(xiàn)測(cè)試中發(fā)現(xiàn)的問(wèn)題及解決辦法。本課題所設(shè)計(jì)并實(shí)現(xiàn)的廣告系統(tǒng)具有占用FLASH空間小、系統(tǒng)穩(wěn)定、圖片呈現(xiàn)快、支持任意時(shí)段播放的特點(diǎn),目前已批量生產(chǎn),并得到了諸多廣電的認(rèn)可。同時(shí)該系統(tǒng)已被長(zhǎng)虹、國(guó)芯、海爾和富士通等機(jī)頂盒生產(chǎn)廠商集成,具有很高的可移植性和較高的知名度。
[Abstract]:With the strengthening of the overall conversion and translation of national digital television, various provinces, cities and radio and television departments at all levels have completed digital translation and accumulated rich experience in system construction and operation. But the cost of digital TV translation project is very high, especially the terminal set-top box investment is huge, but the current income only TV viewing fee, how to do a good job of value-added services, has become a problem for radio and television. As a result, graphic advertising has become an important source of revenue for radio and television departments. The introduction of advertising system helps to tap the potential of digital TV platform, on the other hand, it can enhance the competitiveness of enterprises. This paper mainly focuses on the design and implementation of software function of set-top box advertising system. This paper first introduces the development history and present situation of digital TV at home and abroad, and also introduces the great significance and characteristics of set-top box and set-top box advertising system for the promotion of digital TV business. Secondly, this paper introduces the digital TV technology and standards related to this system, including DVB standard MPEG2 standard and PSI / SI standard. In particular, the structure, segments, descriptors and private segments of MPEG2 are described in detail, which is the focus of the PSI/SI standard. Then, based on my understanding of digital TV technology and standards, the hardware structure and software level of set-top box are deeply studied. The functions of the main hardware modules of the set-top box are explained, and the working principle of the set-top box, especially the demultiplexing process, is summarized. In the software part, the paper first explains why the STB software should be implemented in layers, and then introduces the function of each layer software module in detail. Then, the thesis describes the principle, classification and characteristics of the advertising system. The system is divided into modules according to the functions of data receiving and parsing, task management, data storage and picture display. It also describes the call relation, function and interface classification of each system module. In the implementation part of the advertising system, the main data type definition and data structure of the system are described, and then how to receive, update, store and display the advertisement system data is described in detail. Finally, the problems and solutions found in the implementation and test of advertising system are listed. The advertising system designed and implemented in this paper has the characteristics of small FLASH space, stable system, fast picture presentation, and can be played at any time. At present, the advertisement system has been produced in batches and has been recognized by many radio and television stations. At the same time, the system has been integrated by STB manufacturers such as Changhong, CCM, Haier and Fujitsu, with high portability and high visibility.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN949.197;TP311.52

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前2條

1 董博;新一代數(shù)字電視相關(guān)軟件的研究與實(shí)現(xiàn)[D];天津大學(xué);2007年

2 李遠(yuǎn)遠(yuǎn);數(shù)字電視機(jī)頂盒中EPG的研究與實(shí)現(xiàn)[D];電子科技大學(xué);2008年

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本文編號(hào)：1906512