6. Advanced
Black level
∆
G
∆Β
∆
R
R
G
B
Image 6-53
The objective of input balancing
The objective in input balancing is to “set” the same black level and the same white level for the three colors of a particular input
source.
Black level setting : brightness
White level setting : contrast
The same absolute black and white level for the three colors allows the same reference for Brightness and contrast control of the
picture !
These two references also set the range in which the ADC will work for that particular source ( this explains also why each input
balance setting is linked to a particular source and thus saved in the image file).
How can it be done ?
To balance the three color signals of a particular source there are conditions; in fact we must know the black and the white level of
the source i.e. :
1.
the source in question must be able to generate a white signal, ideally a 100% white (background) full screen pattern
2.
the source in question must be able to generate a black signal, ideally a 100 % black (background) full screen pattern
A
B
Image 6-54
White balance : In the projector, we will set the contrast for each color until we get a 100% light output picture when projecting a
100% white image (image A)
Black balance : In the projector, we will set the brightness for each color until we get a 0% light output picture when projecting a
100% black image (image B).
The changeover from min to max is indicated by the apparition of bright spots also called “digital noise”
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R5976874 ID PRO R600/R600+ 21/09/2006
Summary of Contents for iD PRO R600+
Page 1: ...iD PRO R600 R600 Owners Manual R9010350 R9010351 R5976874 01 21 09 2006 ...
Page 6: ......
Page 10: ...Table of contents 4 R5976874 ID PRO R600 R600 21 09 2006 ...
Page 32: ...4 Setup 26 R5976874 ID PRO R600 R600 21 09 2006 ...
Page 36: ...5 Getting started 30 R5976874 ID PRO R600 R600 21 09 2006 ...
Page 65: ...6 Advanced Image 6 48 R5976874 ID PRO R600 R600 21 09 2006 59 ...
Page 112: ...6 Advanced 106 R5976874 ID PRO R600 R600 21 09 2006 ...
Page 168: ...11 Standard Image Files 162 R5976874 ID PRO R600 R600 21 09 2006 ...
Page 172: ...12 Troubleshoot 166 R5976874 ID PRO R600 R600 21 09 2006 ...
Page 176: ...13 Maintenance 170 R5976874 ID PRO R600 R600 21 09 2006 ...