Instruction manual

Table Of Contents
70
Precautions for chroma boost function
The figure below shows the relationship between the Pb and Pr input signals and the display level
when the chroma boost function (×3) has been set to ON.
Bear in mind that if the result of multiplying the chroma signal value by 3 exceeds ±109%, a limit
will be imposed at ±109%.
Example: A 30% signal will be expanded to 90%, but when a 100% signal is multiplied by 3, it
will be increased to 109% only.
If Pb is a 30% signal and Pr a 100% signal, the result will be 90% for Pb and 109% for
Pr, causing the color balance to be changed entirely.
For GBR input signals, the chroma boost function works as a function for changing the B and R
gain.
×3
100%
Display level
100
0
109
0
109
100
Input level
-109
-100
-100
-109
36