NDLI: Fine-grained dynamic voltage scaling on OLED display

Content Provider	IEEE Xplore Digital Library
Author	Xiang Chen Jian Zeng Yiran Chen Wei Zhang Hai Li
Copyright Year	2012
Description	Author affiliation: Department of Electrical and Computer Engineering, University of Pittsburgh, PA, USA 15217 (Xiang Chen; Jian Zeng; Yiran Chen) \|\| Department of Electrical & Computer Engineering, Polytechnic Institute of NYU, Brooklyn, NY, USA 11201 (Hai Li) \|\| Division of Computing System, School of Computer Engineering, Nanyang Technological University, Singapore, 639798 (Wei Zhang)
Abstract	Organic Light Emitting Diode (OLED) has emerged as the new generation display technique for mobile multimedia devices. Compared to existing technologies OLEDs are thinner, brighter, lighter, and cheaper. However, OLED panels are still the biggest contributor to the total power consumption of mobile devices. In this work, we proposed a fine-grained dynamic voltage scaling (FDVS) technique to reduce the OLED power. An OLED panel is partitioned into multiple display areas of which the supply voltage is adaptively adjusted based on the displayed content. A DVS-friendly OLED driver design is also proposed to enhance the color accuracy of the OLED pixels at the scaled supply voltage. Our experimental results show that compared to the existing global DVS technique, FDVS technique can achieve 25.9%∼43.1% more OLED power saving while maintaining a high image quality measured by Structural Similarity Index (SSIM=0.98). The further analysis shows shat FDVS technology can also effectively reduce the color remapping cost when color compensation is required to improve the image quality of an OLED panel working at a scaled voltage.
Starting Page	807
Ending Page	812
File Size	413876
Page Count	6
File Format	PDF
ISBN	9781467307703
ISSN	21536961
e-ISBN	9781467307727
DOI	10.1109/ASPDAC.2012.6165066
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-01-30
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image color analysis Image quality Voltage control Active matrix organic light emitting diodes Power demand Humans
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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