Title page for etd-0628114-120545


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URN etd-0628114-120545
Author Ming-kai Chen
Author's Email Address No Public.
Statistics This thesis had been viewed 5353 times. Download 19 times.
Department Electrical Engineering
Year 2013
Semester 2
Degree Master
Type of Document
Language English
Title High efficiency power management mechanism for display on mobile device
Date of Defense 2014-01-22
Page Count 54
Keyword
  • Human visual perception
  • Subjective quality assessment
  • Energy saving
  • Backlight scaling
  • Mobile device
  • Abstract In the last decade, mobile devices had been an important part of our life. With the advance in information and communication technology, mobile devices can achieve almost everything with proper apps. However, the durability of the mobile devices is still a problem. The major parts which consume most of the energy are the screen, communication unit and the computation unit arranged in descending order. Base on this fact, we focused on lower the power consumption of the screen by adjusting the backlight level, since the backlight system dominate the screen power requirement. So we proposed a backlight adjustments based on the subjective quality assessment. First of all, for collecting the basic data of human visual perception, series of quality assessment are performed. According to these data, this paper designed a backlight adjustment algorithm based on the luminance and contrast. In the end, for the balance between visual quality and energy saving, this algorithm has been assigned different parameters and performed the subjective quality assessment again. Experimental results demonstrate that the proposed algorithm could achieve better energy cost while preserving the visual quality in single image display.
    Advisory Committee
  • Min-Kuan Chang - chair
  • Po-Chyi Su - co-chair
  • Chih-Hung Kuo - co-chair
  • Chia-Hung Yeh - advisor
  • Files
  • etd-0628114-120545.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2014-07-28

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