The direct satellite broadcasting of digital TV signals provides a convenient means of distributing video and audio content over a broad geographical area and overcomes the difficulties involved in ...deploying cable-based systems in mountainous areas, remote rural regions, off-lying islands, and so forth. Furthermore, since digital TV signals can be distributed over wired and wireless networks in the same way as any other form of digital data, the potential exists to combine digital TV services with conventional Internet and telephony services in order to provide end-users with an integrated entertainment / communications package. This study proposes a framework for a multicast digital television service in which a DSM server is used to multicast the digital TV signals received via a satellite dish to a group of 8~10 clients connected to the server via a SONET optic-fiber Intranet. The paper describes the major hardware and software components of the proposed framework and discusses the various management and Conditional Access (CA) mechanisms implemented within it. Overall, the framework presented in this study represents an ideal solution for the provision of a cost-effective, secure and value-added digital TV service to small groups of local subscribers located within close physical proximity of one another, e.g. within a hotel, an apartment block, a school dormitory, and so forth.
Multicast Services of Digital Television in a New Management Framework Ming-Ju Yang; Wen-Chung Chang; Kao-Feng Yarn ...
2008 International Workshop on Education Technology and Training & 2008 International Workshop on Geoscience and Remote Sensing,
2008-Dec., Volume:
2
Conference Proceeding
The direct satellite broadcasting of digital TV signals provides a convenient means of distributing video and audio content over a broad geographical area and overcomes the difficulties involved in ...deploying cable-based systems in mountainous areas, remote rural regions, off-lying islands, and so forth. Furthermore, since digital TV signals can be distributed over wired and wireless networks in the same way as any other form of digital data, the potential exists to combine digital TV services with conventional Internet and telephony services in order to provide end-users with an integrated entertainment / communications package. This study proposes a framework for a multicast digital television service in which a DSM server is used to multicast the digital TV signals received via a satellite dish to a group of 8~10 clients connected to the server via a SONET optic-fiber Intranet. The paper describes the major hardware and software components of the proposed framework and discusses the various management and Conditional Access (CA) mechanisms implemented within it. Overall, the framework presented in this study represents an ideal solution for the provision of a cost-effective, secure and value-added digital TV service to small groups of local subscribers located within close physical proximity of one another, e.g. within a hotel, an apartment block, a school dormitory, and so forth.
Current tabletop systems are designed to sense 2D interactions taken place on the tabletop surface, such as finger touches and tangible objects. The ability to interact above the tabletop surface ...makes it possible to support 3D interactions. For example, an architect can examine a 2D blueprint of a building shown on the tabletop display while inspecting 3D views of the building by moving a mobile display above the tabletop. Recent approaches to localize objects in 3D requires visible markers or the use of embedded sensors Song et al. 2009. The use of visible markers often interferes with the content users are focusing on, limiting its usefulness and applicability.
i-m-Tube Lin, Jin-Yao; Chen, Yen-Yu; Ko, Ju-Chun ...
Proceedings of the 17th ACM international conference on Multimedia,
10/2009
Conference Proceeding
In this paper we introduce a tubular interface, the i-m-Tube, which provides convenient user interaction with multimedia content by multi-touch input and multi-resolution display. With its tubular ...surface, the i-m-Tube is suitable for displaying panoramic image content like the Chinese scroll painting "Along the River During the Ch'ingming Festival" which has been regarded as a national treasure and widely known by its extraordinary width and its various details. The strength of our system is that it is not just suitable for displaying panoramic content, but also possible to create an intuitive and natural context for user interaction with multimedia content displayed on the i-m-Tube by multi-finger touch. It also provides a high resolution area on demand, which is projected by a steerable projector in a Full-HD resolution. We have developed our system as an interface which can be applied adaptively to different applications, having the features of multi-touch and multi-resolution interactivity on a tubular display. In this work, we have implemented several prototypes designed for different applications, like "Tetris360" aiming on co-op arcade gaming, and "Panoramic Cover Flow" for interactive digital signage, to show the capabilities and opportunities of the i-m-Tube display system. With our preliminary experiments on the i-m-Tube, it is exciting to see the potential of the i-m-Tube as a new interface for people to meet the interactive multimedia touch in this generation.
