LGC-DVS: Local Gamma Correction-Based Dynamic Voltage Scaling for Android Smartphones With AMOLED Displays
| Autor: | Seongwoo Hong, Suk-Won Kim, Young-Jin Kim |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Power management
Engineering local gamma correction 02 engineering and technology 01 natural sciences human visual system law.invention law AMOLED display 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electronic engineering OLED Dynamic voltage scaling Android smartphone user study Electrical and Electronic Engineering Android (operating system) 010302 applied physics business.industry 020206 networking & telecommunications Electronic Optical and Magnetic Materials Active matrix AMOLED Gamma correction Embedded system Human visual system model lcsh:Electrical engineering. Electronics. Nuclear engineering business lcsh:TK1-9971 Biotechnology |
| Zdroj: | IEEE JOURNAL OF THE ELECTRON DEVICES SOCIETY(5): 6 IEEE Journal of the Electron Devices Society, Vol 5, Iss 6, Pp 432-444 (2017) |
| ISSN: | 2168-6734 |
| DOI: | 10.1109/jeds.2017.2745680 |
| Popis: | Recently, the use of active matrix organic light emitting diode (AMOLED) displays is increasing for smartphones which have been widely used and their battery lifetime is very important for users. Due to frequent interactions between users and smartphones, the power management of AMOLED displays is crucial. To this end, dynamic voltage scaling (DVS) is most effective and a lot of studies on it have been made. However, no work of DVS on smartphones with AMOLED displays can be found in the literature. In this paper, we propose the first practical DVS scheme for AMOLED displays on Android smartphones, aiming both human visual system (HVS)-awareness and high power saving. It combines automated battery-aware DVS with local gamma correction and effective smoothing using a novel metric which can evaluate the balance between power saving and HVS-awareness from a user study. In extensive experiments with an implementation of an Android platform, the proposed scheme saves power consumption by up to 62% and extends battery lifetime by about 15% over a normal mode. Moreover, it achieves better HVS-awareness as well as better power saving than the power-saving mode in a smartphone, which restricts some device functions for much power saving intentionally. |
| Databáze: | OpenAIRE |
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