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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
Summary of Contents for HDF-W30LP
Page 1: ...HDF WLP series User and Installation manual R5906730 05 01 08 2017...
Page 4: ......
Page 10: ...Table of contents 6 R5906730 HDF WLP SERIES 01 08 2017...
Page 78: ...8 Input Communication 74 R5906730 HDF WLP SERIES 01 08 2017...
Page 90: ...9 Getting started 86 R5906730 HDF WLP SERIES 01 08 2017...
Page 94: ...10 Software upgrade Image 10 5 90 R5906730 HDF WLP SERIES 01 08 2017...
Page 95: ...10 Software upgrade Image 10 6 R5906730 HDF WLP SERIES 01 08 2017 91...
Page 98: ...10 Software upgrade Image 10 11 94 R5906730 HDF WLP SERIES 01 08 2017...
Page 99: ...10 Software upgrade Image 10 12 R5906730 HDF WLP SERIES 01 08 2017 95...
Page 100: ...10 Software upgrade Image 10 13 10 Clear the history log 96 R5906730 HDF WLP SERIES 01 08 2017...
Page 108: ...11 Quick set up adjustment 104 R5906730 HDF WLP SERIES 01 08 2017...
Page 172: ...15 Layout 168 R5906730 HDF WLP SERIES 01 08 2017...
Page 224: ...17 Alignment 220 R5906730 HDF WLP SERIES 01 08 2017...
Page 258: ...18 Projector Control 254 R5906730 HDF WLP SERIES 01 08 2017...
Page 272: ...19 Service 268 R5906730 HDF WLP SERIES 01 08 2017...
Page 282: ...21 Maintenance procedures 278 R5906730 HDF WLP SERIES 01 08 2017...
Page 300: ...C Standard source files 296 R5906730 HDF WLP SERIES 01 08 2017...
Page 304: ...D DMX chart 300 R5906730 HDF WLP SERIES 01 08 2017...
Page 310: ...E Stacking HDF WLP series projectors 306 R5906730 HDF WLP SERIES 01 08 2017...