7814UDX-4K Series
HD/3G/UHD Up/Down/Cross Converters
Revision 1.2
Page - 27
HDR Conversion
SDR to HDR conversions:
The input SDR is first scaled by the aperture compensation then the highlights are expanded to the output
target from the knee and above.
For SDR->HDR it is recommended that the aperture compensation be set between 3 and 5 for best results
for an HDR output of 300-500 nits. It is also recommended not to expand the highlights too much as the
results will become quite banded due to lack of dynamic range of the input.
Note:
For all the HDR standards such as HLG, HDR1092084) or SLOG3, the operation is the same.
Figure
5-6 : HDR to SDR Conversion Diagram
HDR to SDR Conversions:
The input HDR is first scaled by 1/aperture compensation then the highlights are compressed to the output
target from the knee and above.
Note:
All levels above the maximum input will be compressed to the target output.
Figure
5-7 : HDR to SDR Conversion Diagram
