Backlight dimming in power-aware mobile displays

This paper presents a temporally-aware backlight scaling (TABS) technique for video streams. The goal is to maximize energy saving in the display system by means of dynamic backlight dimming subject to a user-specified tolerance on the video distortion. The video distortion itself comprises of (i) a...

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Bibliographic Details
Published in:2006 43rd ACM/IEEE Design Automation Conference pp. 604 - 607
Main Authors: Iranli, Ali, Lee, Wonbok, Pedram, Massoud
Format: Conference Proceeding
Language:English
Published: New York, NY, USA ACM 24.07.2006
IEEE
Series:ACM Conferences
Subjects:
Algorithms
Backlight scaling
Control systems
Encoding
Energy consumption
Hardware
Hardware > Communication hardware, interfaces and storage > Displays and imagers
Human Factors
Human Visual System
Humans
Lamps
LCDs
Liquid crystal displays
Measurement
Pixel
Streaming media
Visual system
human visual system
LCDs
backlight scaling
ISBN:1595933816, 9781595933812
ISSN:0738-100X
Online Access:Get full text
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Summary:This paper presents a temporally-aware backlight scaling (TABS) technique for video streams. The goal is to maximize energy saving in the display system by means of dynamic backlight dimming subject to a user-specified tolerance on the video distortion. The video distortion itself comprises of (i) an intra-frame (spatial) distortion component due to frame-sensitive backlight scaling and transmittance function tuning and (ii) an inter-frame (temporal) distortion component due to large-step backlight dimming across multiple frames and modulated by the physiological characteristics of the human visual system. The proposed backlight scaling technique is capable of efficiently computing the flickering effect online and subsequently using a measure of the temporal distortion to appropriately adjust the slack on the intra-frame spatial distortion. The proposed technique has been implemented on the Apollo Testbed II hardware platform. Actual current measurements on this platform demonstrate the superiority of TABS compared to previous backlight dimming techniques.
Bibliography:SourceType-Conference Papers & Proceedings-1
ObjectType-Conference Paper-1
content type line 25
ISBN:1595933816
9781595933812
ISSN:0738-100X
DOI:10.1145/1146909.1147064