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Power Management in Mobile Devices
book

Power Management in Mobile Devices

by Findlay Shearer
April 2011
Intermediate to advanced content levelIntermediate to advanced
336 pages
13h 59m
English
Newnes
Content preview from Power Management in Mobile Devices
165
www.newnespress.com
Batteries and Displays for Mobile Devices
Figure 5.14 indicates the system level components contribution to the power
consumption. Note the po
wer consumed by the backlight.
There are many techniques employed to conserve energy consumed by a display
system. Ambient luminance affects the visibility of LCD TFT panels. However, by
taking account of this, backlight autoregulation [4] can also reduce the average energy
Main memory
address bus
LCD controller
136
LCD panel
380
LCD panel bus
233
Frame buffer
memory
Frame buffer memory
data bus
102
Frame buffer memory
address bus
83
Main memory data
bus
Main memory 82
Backlight
1200
CPU 32
83
9
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Publisher Resources

ISBN: 9780750679589