Thesis (M.S.)--Boston College, 2007. / Includes bibliographical references. Print copy also available. Also available via the World Wide Web.

Thesis (M.S.)--Humboldt State University, 2008. / Includes bibliographical references (leaves 64-67). Also available via Humboldt Digital Scholar.

Thesis (Ph. D.)--Oregon State University, 2009. / Printout. Includes bibliographical references (leaves 154-164). Also available on the World Wide Web.

An automatic system for supervision of the video and audio content in digital TV broadcasts was investigated in this master’s thesis project. The main goal is to find the best and most cost effective solution for Teracom to verify that the broadcast TV content as received by remote receivers is the same as that incoming to Teracom from content providers. Different solutions to this problem will be presented. The report begins with some background information about the Swedish terrestrial digital TV network and the MPEG-2 compression standard used to transport audio and video; including a description of the DVB Systems and Transport Stream protocol. It describes two current techniques for the supervision of the audio and video content, including an evaluation of these techniques. The first solution is to monitor the video and audio content either by detecting common errors such as frozen picture, visible artifacts, or by comparing the content from two different sources, i.e. a comparison of the output and the input content. The later could be done using video fingerprinting. The second solution monitors the video and audio content indirectly by analyzing the Transport Stream. This could be done either by comparing two Transport Streams to verify that the broadcast signal is identical to the received signal or by detecting common errors in the streams. Further two new potential solutions will be presented based on the research utilizing background knowledge of the MPEG-2 compression standard. The thesis ends with a summary with conclusions and evaluations of all four solutions and future work. / Ett system för automatisk övervakning av ljud- och bildinnehåll i digitala TV sändningar var undersökt i detta exjobb. Målet är att hitta bästa och mest kostnadseffektiva lösningen för Teracom för verifiering av TV innehållet som tas emot av fjärrmottagare är densamma som Teracom får från sina tjänsteleverantörer. Olika lösningar till detta problem blir presenterade. Presentationen startar med bakgrundsinformation om Sveriges marknät för digital TV och MPEG-2 komprimeringsstandarden som används för ljud- och bildsändningar. Den kommer att inkludera en kort beskrivning av DVB system och Transport ström protokoll. Två nuvarande tekniker för övervakningen av ljud- och bildinnehåll kommer att presenteras. Första lösningen handlar om att övervaka TV innehåller antigen genom att detektera vanligast förekommande fel såsom fryst bild, tydliga artefakter eller genom en jämförelse av innehållet från två olika källor, dvs. en jämförelse av ingångs och utgångssignal. Den senare kan åstadkommas genom att använda en så kallad video fingeravtryck. Andra lösningen övervakar ljud- och bildinnehåll indirekt genom att analyser Transport strömmen. Detta görs genom en jämförelse av två Transport strömmar för verifiering om signalen är densamma samt genom detektering av vanligast förekommande fel i strömmarna. Vidare, två nya potentiella lösningar kommer att presenteras med utgångspunkt från den backgrundskunskap om MPEG-2 komprimerings standard som getts. Presentationen avslutas med en sammanfattning och utvärdering av alla fyra lösningar och framtida arbeten.

<p>All digital-TV receivers that are existent on the market today include some sort of a multiplexer which filters the data, the sound and the picture from the digital stream. These de-multiplexers are rather complex and general. The purpose of this Master Thesis is to develop a de-multiplexer which would solely filter one specific type of information out of the data stream, in our case the name of the network.</p><p>The main task of this project contains a close study of MPEG2 and the transport streams in order to find a solution and create a static de-multiplexer. Another part of this project is to choose an adequate method for the control and data communication. We will study the bus protocols I2C and SPI.</p><p>Finally we will construct the entire circuit after having chosen the Development Environment, DE and considered all the different circuit designs suitable for our task as well as the working at a low production cost, which is of course an important factor and challenge. The first part of construction will be made in Very High Speed Integrated Circuit Hardware Description Language, VHDL, code and once the program is tested and working we will implement it and create the circuit. We will run a test of the final circuit test by filtering a near satellite signal and the get the name of the aimed network.</p>

All digital-TV receivers that are existent on the market today include some sort of a multiplexer which filters the data, the sound and the picture from the digital stream. These de-multiplexers are rather complex and general. The purpose of this Master Thesis is to develop a de-multiplexer which would solely filter one specific type of information out of the data stream, in our case the name of the network. The main task of this project contains a close study of MPEG2 and the transport streams in order to find a solution and create a static de-multiplexer. Another part of this project is to choose an adequate method for the control and data communication. We will study the bus protocols I2C and SPI. Finally we will construct the entire circuit after having chosen the Development Environment, DE and considered all the different circuit designs suitable for our task as well as the working at a low production cost, which is of course an important factor and challenge. The first part of construction will be made in Very High Speed Integrated Circuit Hardware Description Language, VHDL, code and once the program is tested and working we will implement it and create the circuit. We will run a test of the final circuit test by filtering a near satellite signal and the get the name of the aimed network.

This thesis deals with development and implementation of program which enables DVB transport stream service information analysis. Theoretical part is focused on MPEG2 source coding of video signal and multiplexing into DVB transport stream. Practical part deals with program’s individual software modules implementation, which are used for data reading, their processing and presentation in form of service information. The program enables analysis of service information from live terrestrial television broadcasting DVB-T by PC card TechniSat AirStar 2 usage.

Submitted by Kamila Costa (kamilavasconceloscosta@gmail.com) on 2015-06-18T18:45:56Z No. of bitstreams: 1 Tese-Rodrigo Ribeiro de Oliveira.pdf: 2799682 bytes, checksum: 60b9680a231c5e27560663458d4e673d (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-06-19T20:40:50Z (GMT) No. of bitstreams: 1 Tese-Rodrigo Ribeiro de Oliveira.pdf: 2799682 bytes, checksum: 60b9680a231c5e27560663458d4e673d (MD5) / Made available in DSpace on 2015-06-19T20:40:50Z (GMT). No. of bitstreams: 1 Tese-Rodrigo Ribeiro de Oliveira.pdf: 2799682 bytes, checksum: 60b9680a231c5e27560663458d4e673d (MD5) Previous issue date: 2015-03-27 / This PhD thesis presents a novel hardware reconfiguration methodology, which uses the digital TV broadcast signal for reconfiguring hardware modules in digital TV receivers. The proposed methodology allows hardware cores to be signaled, during the transport stream generation step, transmitted and then reassembled. At the receiver, the recovered cores are then used to reconfigure reprogrammable field programmable gate array (FPGA) devices, which are integrated into each receiver unit. Besides, content signaling allows receivers to choose between FPGA cores synthesized for different manufacturers, which enables receivers to select broadcast hardware cores related to the employed FPGA models. The results of the performed experiments, which were carried out during the development of this work, consist in a proof of concept and show the technical feasibility of this methodology, regarding reconfiguration of pre-synthesized hardware cores through the digital TV environment. Receiver manufacturers could benefit from this methodology for developing reconfigurable architectures, which would allow the incorporation of technological advances into receiver hardware and provide better control regarding product life cycle. As a result, future revisions of DTV standards could occur without the need for device replacement. / Esta tese de doutorado apresenta uma metodologia de reconfiguração de hardware, que utiliza o sinal da emissora de TV digital como base para atualizar módulos de receptores de TV digital. A metodologia proposta permite que núcleos de hardware sejam sinalizados, durante a geração do fluxo de transporte, transmitidos e posteriormente remontados. Desse modo, os núcleos recebidos são usados na reconfiguração de dispositivos baseados em lógica reprogramável (field programable gate array - FPGA), que estão integrados ao hardware de cada unidade receptora. Além disso, a sinalização de conteúdo permite a distinção entre núcleos sintetizados para FPGAs de diferentes fabricantes, o que habilita receptores de TV digital a selecionar somente núcleos de hardware relativos aos modelos de FPGA utilizados. Os resultados obtidos com os experimentos realizados, durante o desenvolvimento deste trabalho, consistem em uma prova de conceito e demonstram a viabilidade técnica do uso desta metodologia de transmissão e reconfiguração, para núcleos pré-sintetizados de hardware enviados em um ambiente de televisão digital. Fabricantes de receptores poderiam utilizar os benefícios desta metodologia para o desenvolvimento de arquiteturas reconfiguráveis, o que permitiria a incorporação de avanços tecnológicos às funções de hardware do receptor e um maior controle do ciclo de vida de produto. Como resultado, futuras revisões de normas de TV Digital não resultariam em troca de equipamento.

Video srauto šifravimas yra pagrindinis intelektinės nuosavybės užtikrinimo metodas šiuolaikinėse skaitmeninių teisių valdymo sistemose (DRM). Egzistuojantys šifravimo metodai užtikrina labai aukštą apsaugos lygį, bet tuo pat metu reikalauja labai didelių skaičiavimo resursų ir yra sunkiai pritaikomi ribotų skaičiavimo resursų mobiliems vartotojų įrenginiams. Šiame straipsnyje pristatomas dalinis MPEG-2 transporto srauto šifravimo metodas, kuris yra tinkamas tokiems ribotų resursų terminaliniams vartotojų įrenginiams. Siūlomo metodo eksperimentinio įvertinimo rezultatai rodo, kad šifravimo ir dešifravimo laikai, lyginant su standartiniu pilnu šifravimu, yra sumažinami apie 7 kartus, todėl šis metodas yra tinkamas ribotų skaičiavimo resursų dešifravimo įrenginiams. / Video stream encryption is the main method for the protection of intellectual property in modern digital rights management systems (DRM). Existing encryption methods ensure very high protection level of encrypted content, but at the same time are very resources demanding, making them hardly suitable for low processing power mobile end-user devices. This paper presents partial MPEG-2 transport stream encryption method, which is suitable for such low power user terminals. The experimental evaluation of proposed method show that encryption and decryption times, comparing with standard full encryption, are reduced about 7 times, making proposed method a good choice for low processing power decryption devices.

The purpose of this thesis is to detect errors in Digital Multimedia Broadcasting (DMB) transport stream. DMB uses the MPEG-4 standard for encapsulating Packetized Elementary Stream (PES), and uses the MPEG-2 standard for assembling them in the form of transport stream packets. Recently many research works have been carried out about video stream error detection. They mostly do this by focusing on some decoding parameters related to frame. Processing complexity can be a disadvantage for the proposed methods. In this thesis, we investigated syntax error occurrences due to corruption in the header of the video transport stream. The main focus of the study is the video streams that cannot be decoded. The proposed model is implemented by filtering video and audio packets in order to find the errors. The filters investigate some sources that can affect the video stream playback. The output from this method determines the type, location and duration of the errors. The simplicity of the structure is one of advantages of this model. It can be implemented by three simple filters for detecting errors and a “calculation unit” for calculating the duration of an error. Fast processing is another benefit of the proposed model.