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14. Image
B
Black level
0.7V
Image 14-16
Black level
Δ
G
ΔΒ
Δ
R
R
G
B
Image 14-17
One can conclude here that a good color tracking can only be met by using three previously (input) balanced
color signals
Analog Digital Conversion
The analog color signals must pass through an Analog/Digital conversion circuit prior to any digital processing in the PMP.
A typical ADC transforms the analog value into an 8 bit coded digital signal.
The graphic shows that when converting a signal containing a DC offset component the range of the converter is not optimally used.
Black level
Δ
R
ADC
0
255
i1 : superfluous information
i2 : video information
Image 14-18
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).
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R5906730 HDF WLP SERIES 01/08/2017
Содержание HDF-W30LP
Страница 1: ...HDF WLP series User and Installation manual R5906730 05 01 08 2017...
Страница 4: ......
Страница 10: ...Table of contents 6 R5906730 HDF WLP SERIES 01 08 2017...
Страница 78: ...8 Input Communication 74 R5906730 HDF WLP SERIES 01 08 2017...
Страница 90: ...9 Getting started 86 R5906730 HDF WLP SERIES 01 08 2017...
Страница 94: ...10 Software upgrade Image 10 5 90 R5906730 HDF WLP SERIES 01 08 2017...
Страница 95: ...10 Software upgrade Image 10 6 R5906730 HDF WLP SERIES 01 08 2017 91...
Страница 98: ...10 Software upgrade Image 10 11 94 R5906730 HDF WLP SERIES 01 08 2017...
Страница 99: ...10 Software upgrade Image 10 12 R5906730 HDF WLP SERIES 01 08 2017 95...
Страница 100: ...10 Software upgrade Image 10 13 10 Clear the history log 96 R5906730 HDF WLP SERIES 01 08 2017...
Страница 108: ...11 Quick set up adjustment 104 R5906730 HDF WLP SERIES 01 08 2017...
Страница 172: ...15 Layout 168 R5906730 HDF WLP SERIES 01 08 2017...
Страница 180: ...16 Laser The Current light output panel is displayed Image 16 13 176 R5906730 HDF WLP SERIES 01 08 2017...
Страница 224: ...17 Alignment 220 R5906730 HDF WLP SERIES 01 08 2017...
Страница 258: ...18 Projector Control 254 R5906730 HDF WLP SERIES 01 08 2017...
Страница 272: ...19 Service 268 R5906730 HDF WLP SERIES 01 08 2017...
Страница 282: ...21 Maintenance procedures 278 R5906730 HDF WLP SERIES 01 08 2017...
Страница 300: ...C Standard source files 296 R5906730 HDF WLP SERIES 01 08 2017...
Страница 304: ...D DMX chart 300 R5906730 HDF WLP SERIES 01 08 2017...
Страница 310: ...E Stacking HDF WLP series projectors 306 R5906730 HDF WLP SERIES 01 08 2017...