Focus: A usable & effective approach to OLED display power management

Tan Kiat Wee, Tadashi Okoshi, Archan Misra, Rajesh Krishna Balan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

48 Citations (Scopus)

Abstract

In this paper, we present the design and implementation of Focus, a system for effectively and efficiently reducing power consumption of OLED displays on smartphones. These displays, while becoming exceedingly common still consume significant power. The key idea of Focus is that we use the notion of saliency to save display power by dimming portions of the applications that are less important to the user. We envision Focus being especially useful during low battery situations when usability is less important than power savings. We tested Focus using 15 applications running on a Samsung Galaxy S III and show that it saves, on average, between 23 to 34% of the OLED display power with little impact on task completion times. Finally, we present the results of a user study, involving 30 participants that shows that Focus, even with its dimming behaviour, is still quite usable.

Original languageEnglish
Title of host publicationUbiComp 2013 - Proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing
Pages573-582
Number of pages10
DOIs
Publication statusPublished - 2013
Event2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing, UbiComp 2013 - Zurich, Switzerland
Duration: 2013 Sep 82013 Sep 12

Publication series

NameUbiComp 2013 - Proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing

Conference

Conference2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing, UbiComp 2013
Country/TerritorySwitzerland
CityZurich
Period13/9/813/9/12

Keywords

  • Mobile games
  • Power management
  • Tone mapping

ASJC Scopus subject areas

  • Software

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