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8. Image Menu
B
Black level
0.7V
Image 8-32
Black level
∆
G
∆Β
∆
R
R
G
B
Image 8-33
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
∆
R
ADC
0
255
i1 : superfleous information
i2 : video information
Image 8-34
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 allow 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).
R5976817 RLM H5 17/01/2005
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Summary of Contents for R9010300
Page 1: ...RLM H5 Owners manual R9010300 R5976817 00 17 01 2005...
Page 4: ......
Page 8: ...Table of contents 4 R5976817 RLM H5 17 01 2005...
Page 14: ...1 Packaging and Dimensions 10 R5976817 RLM H5 17 01 2005...
Page 54: ...5 Getting used with the menu structure 50 R5976817 RLM H5 17 01 2005...
Page 60: ...6 Source selection 56 R5976817 RLM H5 17 01 2005...
Page 64: ...7 General Menu Image 7 7 60 R5976817 RLM H5 17 01 2005...
Page 91: ...8 Image Menu Image 8 46 R5976817 RLM H5 17 01 2005 87...
Page 92: ...8 Image Menu 88 R5976817 RLM H5 17 01 2005...
Page 102: ...9 Tools Menu 98 R5976817 RLM H5 17 01 2005...
Page 122: ...12 Image Files Menu 118 R5976817 RLM H5 17 01 2005...
Page 136: ...13 Display Setup 132 R5976817 RLM H5 17 01 2005...
Page 146: ...14 Installation menu 142 R5976817 RLM H5 17 01 2005...
Page 158: ...A Standard Image Files 154 R5976817 RLM H5 17 01 2005...