Completed projects: Multimedia on demand

Projects: Multimedia on Demand

2002 – 2003 – TVoD.

• Coordinator: Wilson Vicente Ruggiero
• Description: TVoD: Multimedia on Demand system for the distribution of digital material from educational TVs. Duration: 24 months. Partner: TV Cultura São Paulo; Funder: CNPq; Value: R$ 100,000.00. Educational TVs play a fundamental role in recording and disseminating scientific, technical, and educational information. These institutions, whether directly related to a university or not, fulfill their role, also seeking to preserve this invaluable collection. Traditional systems used for the mass distribution of this material employ "Broadcast" techniques (real-time or simultaneous distribution). However, these collections constitute a rich source of research material that could be available 24 hours a day, seven days a week, and not only in the daily programming of the TVs. Metropolitan high-speed networks (REMAVs), implemented with the support of CNPq and RNP, enable the deployment of studio-quality on-demand multimedia transmission systems. This eliminates the temporal simultaneity imposed by traditional television transmission, providing enormous gains in applications that need to adapt to the availability of the user. On-demand multimedia systems allow geographically distributed users to access material at any time. Typically, these systems must distribute a huge amount of audio and video content stored in a three- or more-level memory hierarchy. This continuous media material must be intelligently stored ("streaming") in the system's memory hierarchy to allow multiple users to simultaneously access these programs, obtaining a result with quality and operation similar to that of a local video exhibition [BRUB1996].

1997 – 2001 – LDMD.

• Coordinator: Wilson Vicente Ruggiero
• Description: Research Project: Distributed Multimedia on Demand Laboratory (LDMD) Duration: 2 years; Partner: INCOR; Funding Agency: FAPESP - Multi-user Project; Value: R$ 750,000.00 The continuous evolution of communication and data processing technology has made it possible to apply computer systems in areas that until recently were not viable. Not only have existing applications become faster, but, mainly, new applications have been made available, expanding the areas of application of these new technologies. In this context, applications that manipulate multimedia content, such as data, voice, and image, have emerged. Concomitantly, there has been an expansion in the use of computers interconnected through networks, in the most diverse environments such as: research, education, commerce, and industry. This context of multiple interconnected autonomous systems has given rise to new programming paradigms, such as the client/server model, the object-oriented model, the distributed object model, P2P, among others. The combination of these technological developments has fostered the emergence of sophisticated distributed processing environments and high-speed data communication, necessitating the integration of multimedia services. Simply deploying these services in isolation is insufficient to allow modern processing systems to fully meet their requirements. The infrastructure available for these applications must be capable of providing these services in an integrated manner with guaranteed levels of performance and quality of service (QoS). Relevant research questions can be formulated that fully justify investigating the problems of production, processing, distribution, storage, management, and security of distributed applications that handle multimedia content.