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Backlight usability

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==Need for proper usage of Backlight==
 
==Need for proper usage of Backlight==
 
An application should make optimal use of backlight because it costs  
 
An application should make optimal use of backlight because it costs  
[http://wiki.forum.nokia.com/index.php/Optimizing_battery_life battery usage].<BR><BR>
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[[Optimizing battery life|battery usage]].<BR><BR>
[[Image:Backlight.jpg]]
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[[File:Backlight.jpg]]
  
 
== Some guidelines for backlight usability ==
 
== Some guidelines for backlight usability ==
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== Related link ==
 
== Related link ==
  
* [http://wiki.forum.nokia.com/index.php/How_to_check_if_the_backlight_is_off_and_how_to_turn_it_on How to turn on the backlight]
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* [[How to check if the backlight is off and how to turn it on|How to turn on the backlight]]
  
* [http://wiki.forum.nokia.com/index.php/Detecting_user_inactivity_in_Symbian_OS Detecting user inactivity in Symbian]
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* [[Detecting user inactivity in Symbian OS|Detecting user inactivity in Symbian]]
  
* [http://wiki.forum.nokia.com/index.php/How_to_keep_backlight_on Keep backlight on in Python]
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* [[How to keep backlight on|Keep backlight on in Python]]
  
* [http://wiki.forum.nokia.com/index.php/TSS000268_-_How_to_get_a_notification_of_user_activity_when_the_device_has_been_idle%3F How to get user activity notice when device has been idle]
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* [[TSS000268 - How to get a notification of user activity when the device has been idle?|How to get user activity notice when device has been idle]]

Revision as of 06:30, 19 May 2011

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Contents

What is BackLight ?

Backlight is a form of illumination used in liquid crystal displays (LCDs).They are used in small displays(like mobile) to increase readability in low light conditions.

Need for proper usage of Backlight

An application should make optimal use of backlight because it costs battery usage.

Backlight.jpg

Some guidelines for backlight usability

  • Backlight should be turned off when the application is idle.
  • When the application is moved to background, the backlight should turn off after a while.
  • The default backlight settings should not be modified.
  • Backlight timeout period should be low.
  • Backlight behavior should be consistent in case of Voip applications vis-a-vis cell calls, i.e. if profile is silent on incoming cell calls the backlight blinks, the same should happen in the case of Voip calls also.
  • The user inactivity timer should not be tampered with unless there is a valid reason so to do, as this can impact the battery performance and stop the screen saver from coming on.

Related link

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