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9. Image menu
One can conclude here that a good data conversion can only be met by using three previously (input) balanced
color signals
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
fi
le).
9.3.9.2
Adjusting the input balance
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 9-44
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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Summary of Contents for FLM HD20
Page 1: ...FLM HD20 User guide R59770180 00 11 07 2008...
Page 4: ......
Page 14: ...1 Safety 10 R59770180 FLM HD20 11 07 2008...
Page 46: ...5 Connections 42 R59770180 FLM HD20 11 07 2008...
Page 58: ...6 Getting started 54 R59770180 FLM HD20 11 07 2008...
Page 62: ...7 Start up of the Adjustment Mode 58 R59770180 FLM HD20 11 07 2008...
Page 72: ...8 Input menu 68 R59770180 FLM HD20 11 07 2008...
Page 97: ...9 Image menu Image 9 105 Image 9 106 Image 9 107 R59770180 FLM HD20 11 07 2008 93...
Page 98: ...9 Image menu 94 R59770180 FLM HD20 11 07 2008...
Page 112: ...10 Layout menu Image 10 56 108 R59770180 FLM HD20 11 07 2008...
Page 116: ...11 Lamp menu Image 11 11 Image 11 12 Image 11 13 112 R59770180 FLM HD20 11 07 2008...
Page 156: ...13 Projector control 152 R59770180 FLM HD20 11 07 2008...
Page 190: ...17 Removal of the projector covers 186 R59770180 FLM HD20 11 07 2008...
Page 194: ...18 Dimensions 190 R59770180 FLM HD20 11 07 2008...
Page 204: ...20 Troubleshooting 200 R59770180 FLM HD20 11 07 2008...
Page 212: ...21 Specifications 208 R59770180 FLM HD20 11 07 2008...
Page 214: ...22 Order information 210 R59770180 FLM HD20 11 07 2008...