#3747 NORM First D: Backlight too bright

Zarro Boogs per Child bugtracker at laptop.org
Mon Oct 22 22:05:50 EDT 2007


#3747: Backlight too bright
------------------------+---------------------------------------------------
  Reporter:  Hello1024  |       Owner:  mlj                                             
      Type:  defect     |      Status:  reopened                                        
  Priority:  normal     |   Milestone:  First Deployment, V1.0                          
 Component:  hardware   |     Version:  BTest-4 Hardware                                
Resolution:             |    Keywords:  backlight too bright white led backlighting ccfl
  Verified:  0          |  
------------------------+---------------------------------------------------

Comment(by AlbertCahalan):

 Agreed, the minimum is too bright for use in darkness.

 Humans have non-linear perception of light. The current step size is too
 small at high brightness, and too big at low brightness. Output would
 ideally be proportional to the input raised to the 1.8 power. Quadratic is
 close.

-- 
Ticket URL: <https://dev.laptop.org/ticket/3747#comment:3>
One Laptop Per Child <https://dev.laptop.org>
OLPC bug tracking system



More information about the Bugs mailing list