Digital television applications

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Peng, Chengyuan 2012-02-10T09:36:28Z 2012-02-10T09:36:28Z 2002-11-15
dc.identifier.isbn 951-22-6172-3
dc.description.abstract Studying development of interactive services for digital television is a leading edge area of work as there is minimal research or precedent to guide their design. Published research is limited and therefore this thesis aims at establishing a set of computing methods using Java and XML technology for future set-top box interactive services. The main issues include middleware architecture, a Java user interface for digital television, content representation and return channel communications. The middleware architecture used was made up of an Application Manager, Application Programming Interface (API), a Java Virtual Machine, etc., which were arranged in a layered model to ensure the interoperability. The application manager was designed to control the lifecycle of Xlets; manage set-top box resources and remote control keys and to adapt the graphical device environment. The architecture of both application manager and Xlet forms the basic framework for running multiple interactive services simultaneously in future set-top box designs. User interface development is more complex for this type of platform (when compared to that for a desktop computer) as many constraints are set on the look and feel (e.g., TV-like and limited buttons). Various aspects of Java user interfaces were studied and my research in this area focused on creating a remote control event model and lightweight drawing components using the Java Abstract Window Toolkit (AWT) and Java Media Framework (JMF) together with Extensible Markup Language (XML). Applications were designed aimed at studying the data structure and efficiency of the XML language to define interactive content. Content parsing was designed as a lightweight software module based around two parsers (i.e., SAX parsing and DOM parsing). The still content (i.e., text, images, and graphics) and dynamic content (i.e., hyperlinked text, animations, and forms) can then be modeled and processed efficiently. This thesis also studies interactivity methods using Java APIs via a return channel. Various communication models are also discussed that meet the interactivity requirements for different interactive services. They include URL, Socket, Datagram, and SOAP models which applications can choose to use in order to establish a connection with the service or broadcaster in order to transfer data. This thesis is presented in two parts: The first section gives a general summary of the research and acts as a complement to the second section, which contains a series of related publications. en
dc.format.extent 107
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.haspart Chengyuan Peng and Petri Vuorimaa, A Digital Television Navigator, Proceedings of IASTED International Conference on Internet and Multimedia Systems and Applications, November 19-23, 2000, Las Vegas, Nevada, USA, pp. 69-74. [article1.pdf] © 2000 IASTED. By permission.
dc.relation.haspart Chengyuan Peng, Artur Lugmayr, and Petri Vuorimaa. A Digital Television Navigator, the International Journal of Multimedia Tools and Applications, Vol. 17, Issue 1, May of 2002, pp. 129-149. [article2.pdf] © 2002 Kluwer Academic Publishers. By permission.
dc.relation.haspart Chengyuan Peng and Petri Vuorimaa. A Digital Teletext Service, Proceedings of the 9th WSCG International Conference on Computer Graphics, Visualization and Computer Vision, Czech Republic, February 5-9, 2001, pp. 120-125. [article3.pdf] © 2001 WSCG. By permission.
dc.relation.haspart Chengyuan Peng and Petri Vuorimaa, Interactive Digital Teletext Service, Proceedings of the 6th world Multiconference on Systemics, Cybernetics and Informatics, July 14-18, 2002, Orlando, Florida, USA, Vol. X, pp. 181-186. [article4.pdf] © 2002 SCI. By permission.
dc.relation.haspart Chengyuan Peng and Petri Vuorimaa. Development of Java User Interface for Digital Television, Proceedings of the 8th WSCG International Conference on Computer Graphics, Visualization and Interactive Digital Media, February 2000, Czech Republic, pp. 120-125. [article5.pdf] © 2000 WSCG. By permission.
dc.relation.haspart Chengyuan Peng and Petri Vuorimaa, Decoding DVB Digital Television Subtitles, Proceedings of the 20th IASTED International Multi-conference on Applied Informatics, February 18-21, 2002, Innsbruck, Austria, pp. 143-148. [article6.pdf] © 2002 IASTED. By permission.
dc.relation.haspart Chengyuan Peng, Pablo Cesar, and Petri Vuorimaa, Integration of Applications into Digital Television Environment, Proceedings of the 7th International Conference on Distributed Multimedia Systems, September 26-28, 2001, Taipei, Taiwan, pp. 266-272. [article7.pdf] © 2001 Knowledge Systems Institute. By permission
dc.relation.haspart Chengyuan Peng and Petri Vuorimaa, Digital Television Application Manager, Proceedings of the IEEE International Conference on Multimedia and Expo 2001, Tokyo, Japan, August 22-25, 2001, pp. 685-688. [article8.pdf] © 2001 IEEE. By permission.
dc.subject.other Computer science en
dc.title Digital television applications en
dc.type G5 Artikkeliväitöskirja fi
dc.description.version reviewed en
dc.contributor.department Department of Computer Science and Engineering en
dc.contributor.department Tietotekniikan osasto fi
dc.subject.keyword interactive service en
dc.subject.keyword digital television en
dc.subject.keyword middleware en
dc.subject.keyword user interface en
dc.subject.keyword content en
dc.subject.keyword interactivity en
dc.subject.keyword Java en
dc.subject.keyword XML en
dc.identifier.urn urn:nbn:fi:tkk-001968
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en
dc.contributor.lab Laboratory of Telecommunications Software and Multimedia en
dc.contributor.lab Tietoliikenneohjelmistojen ja multimedian laboratorio fi

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