Modular framework support for context-aware mobile cinema Andreas Schrader Darren V. Carlson Dominik Busch (International School of New Media, University of Luebeck, Germany) Personal and Ubiquitous Computing (Volume 12, Issue 4, April 2008) Summarized by Babar Tareen, IDS Lab., Seoul National University Presented by Babar Tareen, IDS Lab., Seoul National University

Copyright  2007 by CEBT Mobile Cinema (Concept)  User specific and context-aware distribution of interactive content on mobile devices  Classical cinema content is not suitable for small screens  Mobile users view content while still perceiving the world  Video on mobile devices has to be classified as augmented reality 2

Copyright  2007 by CEBT Introduction  Mobile cinema offers new possibilities for enhancing social interactions in yet unknown dimensions  Features and story enhancements based on the physical surroundings of the mobile viewer  Aladin – framework for ubiquitous computing  Student teams designed projects for context-aware handheld computers 3

Copyright  2007 by CEBT Context Detection 4  Achieved through portable WorkSPACE IrDA Beacons Aladin plugins  Aladin framework receives beacon identifiers  Beacon identifiers are used to obtain service behavior from remote server  Context detection plugins for WLAN, Bluetooth RFID.

Copyright  2007 by CEBT Film Project Details  Separate Aladin services for each team  Film teams were responsible for application state maintenance  Used Aladin framework to bind film to infrared beacon 5 Simplified mobile cinema example environment

Copyright  2007 by CEBT Film Project Details (2)  Film can be started by clicking its entry in Aladin list  Some of the projects Autophobia – Horror movie with context becons placed on objects like printer, telephone etc. Chill Pill – Film clips of room interiors which could be seen through closed doors. Confusion – logic puzzles which must be solved in order to discover location of next beacon. Connections – student interviews regarding life on campus Library’s Memories – about misusage of library at different location points. 6

Copyright  2007 by CEBT Modular ubiquitous computing framework  Existing approaches are complex Provide limited means for adopting these issues  Aladin Flexible plug-in mechanism Designed to integrate ubiquitous computing functionality into a broad range of devices. 7

Copyright  2007 by CEBT Aladin framework objectives  Minimize dependencies on Context-detection mechanisms Context interpretation mechanisms Service presentation mechanisms  Provide an open and scalable environment for context -aware services 8

Copyright  2007 by CEBT Aladin – Abstraction Layers  Aladin has been architectured to allow key framework components to be installed or exchanged during runtime  Key areas of abstraction Context detection Context interpretation Service presentation 9

Copyright  2007 by CEBT Software Architecture  Aladin is designed to operate as a library within a hosting application  Hosting application is responsible for state management 10

Copyright  2007 by CEBT Conclusions  Placing the viewer physically within a film project’s context makes the mobile cinema experience intense  Aladin opens up many possibilities for developing new types of context-aware services  Plug-in mechanisms allow Aladin devices to be adapt ed to specific hardware configurations and physical environments  Ability to rapidly create context-aware services 11