Optimizing mobile display brightness by leveraging human visual perception

Matthew Schuchhardt, Susmit Jha, Raid Ayoub, Michael Kishinevsky, Gokhan Memik

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

5 Scopus citations

Abstract

Modern smartphones and tablets are battery-constrained by their mobility; this constraint is heavily factored into any design decision made on the device. Furthermore, the display is one of the most power-consuming subsystems. Adaptive display brightness systems attempt to address this high display power consumption by setting the brightness depending on the surrounding ambient light levels. In this work, we run a series of user studies aimed at gauging the accuracy of these adaptive brightness models. These studies compare subjective satisfaction and readability metrics on a common smartphone display and find that the adaptive brightness system isn't well-tuned to user preferences. We also find that subjective ratings and readability are closely correlated with one another across different display brightness levels, which can be used to give a better understanding of how screen brightness levels impact users. Additionally, we note that operating systems need to reduce the power envelope of the device for a variety of reasons. This is done without understanding the impact of these decisions on user satisfaction, and can significantly degrade user experience. In this work, we propose a user-aware method of reducing display power consumption, which allows display power to be throttled while understanding the resulting impact on the user. By considering this impact on the user, we devise an optimal dimming scheme which can reduce the time-weighted readability degradation by upwards of 21.5%.

Original languageEnglish (US)
Title of host publication2015 International Conference on Compilers, Architecture and Synthesis for Embedded Systems, CASES 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages11-20
Number of pages10
ISBN (Electronic)9781467383202
DOIs
StatePublished - Nov 10 2015
EventInternational Conference on Compilers, Architecture and Synthesis for Embedded Systems, CASES 2015 - Amsterdam, Netherlands
Duration: Oct 4 2015Oct 9 2015

Publication series

Name2015 International Conference on Compilers, Architecture and Synthesis for Embedded Systems, CASES 2015

Other

OtherInternational Conference on Compilers, Architecture and Synthesis for Embedded Systems, CASES 2015
Country/TerritoryNetherlands
CityAmsterdam
Period10/4/1510/9/15

Keywords

  • Brightness
  • Mobile communication
  • Organic light emitting diodes
  • Organizations
  • Pressing

ASJC Scopus subject areas

  • Hardware and Architecture
  • Computer Science Applications

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