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12. Advanced Settings
Another value that is subject to alteration is the amplitude of the signal, resulting in an altered “Gain” of the signal (
“white level”
or
contrast
).
The alterations of the three color signals will happen independently i.e. the colors will end to be unbalanced, image 12-2
B
Black leve
0.7V
Image 12-1
Black leve
∆
G
∆Β
∆
R
R
G
B
Image 12-2
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 12-3
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).
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R5976672 SOLARIS LC40 01042004
Summary of Contents for R9004120
Page 1: ...MEDIA EVENTS SOLARIS LC40 R9004120 Events R9004125 Media OWNERS MANUAL 01042004 R5976672 03 ...
Page 4: ......
Page 14: ...2 Packaging and Dimensions 10 R5976672 SOLARIS LC40 01042004 ...
Page 32: ...4 Connections 28 R5976672 SOLARIS LC40 01042004 ...
Page 40: ...5 Getting Started 36 R5976672 SOLARIS LC40 01042004 ...
Page 46: ...7 Input Selection 42 R5976672 SOLARIS LC40 01042004 ...
Page 58: ...8 Image Settings 54 R5976672 SOLARIS LC40 01042004 ...
Page 62: ...9 Audio Settings 58 R5976672 SOLARIS LC40 01042004 ...
Page 67: ...10 PiP Settings Image 10 4 Positioning PiP window R5976672 SOLARIS LC40 01042004 63 ...
Page 68: ...10 PiP Settings 64 R5976672 SOLARIS LC40 01042004 ...
Page 70: ...11 Compact PC Control 66 R5976672 SOLARIS LC40 01042004 ...
Page 98: ...B Optional Mounting Equipment A Image B 10 A B Image B 11 94 R5976672 SOLARIS LC40 01042004 ...
Page 100: ...C Specifications 96 R5976672 SOLARIS LC40 01042004 ...