An energy-efficient proposal for digital clocks in public display systems

Author(s):  
Agnish Mal ◽  
Aakash Biswas ◽  
Debasis Samanta
Author(s):  
Bernhard Wally ◽  
Alois Ferscha

Media façades, realized through projection systems, could be a promising technology for scalable public displays in urban spaces. With low requirements regarding the infrastructure and virtually no influence on the buildings’ fabric, projected façades offer exceptional flexibility and extensibility as well as easy maintenance. As cities are increasingly confronted with digital signage products besides other public display systems, a projector-based system offers the possibility to be switched off and restore the screen to its previous state in the blink of an eye. We present the prototypical implementation of a “Staged Façades Framework” leveraging a façade’s structure and ornamentation for dynamically adapting pieces of multimedia content.


2019 ◽  
Vol 2019 ◽  
pp. 1-18 ◽  
Author(s):  
Pedro Coutinho ◽  
Rui José

Digital public displays can represent a powerful medium for personal expression and situated communication. However, before they can actually serve as an effective communication medium, they need to move towards more open models, in which user-generated content can play a more prominent role in their relevance and value proposition. The key challenge, however, is how to share control with users while being able to guarantee that published content matches the social expectations of a place and the goals of the display owner. In this study, we explore a risk management methodology as a comprehensive approach to this issue. We propose a framework that supports the systematic elicitation of the risks involved, their prioritisation, and the selection of the specific combination of moderation techniques that is able to reduce risk to a level that is deemed acceptable, while minimising the moderation effort and the impact on the willingness of users to publish their content. With this overall framework, we expect to help display owners to reason about the moderation needs of their displays and the best mapping between those needs and various moderation techniques.


2003 ◽  
pp. 359-386 ◽  
Author(s):  
Julie A. Black ◽  
W. Keith Edwards ◽  
Mark W. Newman ◽  
Jana Z. Sedivy ◽  
Trevor F. Smith

2014 ◽  
Vol 2014 ◽  
pp. 1-17 ◽  
Author(s):  
Jorge C. S. Cardoso ◽  
Rui José

Public displays are becoming increasingly interactive and a broad range of interaction mechanisms can now be used to create multiple forms of interaction. However, the lack of interaction abstractions forces each developer to create specific approaches for dealing with interaction, preventing users from building consistent expectations on how to interact across different display systems. There is a clear analogy with the early days of the graphical user interface, when a similar problem was addressed with the emergence of high-level interaction abstractions that provided consistent interaction experiences to users and shielded developers from low-level details. This work takes a first step in that same direction by uncovering interaction abstractions that may lead to the emergence of interaction controls for applications in public displays. We identify a new set of interaction tasks focused on the specificities of public displays; we characterise interaction controls that may enable those interaction tasks to be integrated into applications; we create a mapping between the high-level abstractions provided by the interaction tasks and the concrete interaction mechanisms that can be implemented by those displays. Together, these contributions constitute a step towards the emergence of programming toolkits with widgets that developers could incorporate into their public display applications.


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