Paper Info
Title
A Backlight Optimization Scheme For Video Playback On Mobile Devices
Abstract
For a typical portable handheld device, the backlight accounts for a significant percentage of the total energy consumption (e.g., around 30% for a Compaq iPAQ 3650). Substantial energy savings can be achieved by dynamically adapting backlight intensity levels on such low-power portable devices. In this paper, we analyze the characteristics of video streaming services and propose an adaptive scheme called Quality Adapted Backlight Scaling (QABS), to achieve backlight energy savings for video playback applications on handheld devices. Specifically, we present a fast algorithm to optimize backlight dimming while keeping the degradation in image quality to a minimum so that the overall service quality is close to a specified threshold. Additionally, we propose two effective techniques to prevent frequent backlight switching, which negatively affects user perception of video. Our initial experimental results indicate that the energy used for backlight is significantly reduced, while the desired quality is satisfied. The proposed algorithms can be realized in real time.
Year
DOI
Venue
2006
10.1109/CCNC.2006.1593156
2006 3RD IEEE CONSUMER COMMUNICATIONS AND NETWORKING CONFERENCE, VOLS 1-3
Keywords
DocType
ISSN
thin film transistors,lighting,psnr,real time,mobile device,service quality,image quality,liquid crystal displays,satisfiability,negative affect,handheld device,brightness
Conference
2331-9852
Citations 
PageRank 
References 
6
0.67
3
Authors
5
Name
Order
Citations
PageRank
Liang Cheng1474.04
Shivajit Mohapatra222716.67
Magda El Zarki3937136.94
Nikil Dutt44960421.49
Nalini Venkatasubramanian523215.42