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8. Image Menu
B
Black level
0.7V
Image 8-37
Black level
∆
G
∆Β
∆
R
R
G
B
Image 8-38
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 : superfluous information
i2 : video information
Image 8-39
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 02/06/2006
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Summary of Contents for RLM H5
Page 1: ...RLM H5 Owners manual R9010300 R5976817 03 02 06 2006...
Page 4: ......
Page 8: ...Table of contents 4 R5976817 RLM H5 02 06 2006...
Page 14: ...1 Packaging and Dimensions 10 R5976817 RLM H5 02 06 2006...
Page 54: ...5 Getting used with the menu structure 50 R5976817 RLM H5 02 06 2006...
Page 60: ...6 Source selection 56 R5976817 RLM H5 02 06 2006...
Page 64: ...7 General Menu Image 7 7 60 R5976817 RLM H5 02 06 2006...
Page 93: ...8 Image Menu Image 8 51 R5976817 RLM H5 02 06 2006 89...
Page 94: ...8 Image Menu 90 R5976817 RLM H5 02 06 2006...
Page 104: ...9 Tools Menu 100 R5976817 RLM H5 02 06 2006...
Page 134: ...13 Display Setup 130 R5976817 RLM H5 02 06 2006...
Page 144: ...14 Installation menu 140 R5976817 RLM H5 02 06 2006...