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The FS-HDR can be configured to operate with one of a variety of references,
including genlock to the signal from the Reference input connector, genlock to
the current video input signal, or Free Run. Your choice of reference needs to
meet your individual facility requirements, and must be accounted for when you
configure an FS-HDR video output format.
HDR and WCG Background
High Dynamic Range (HDR) and Wide Color Gamut (WCG) are relatively new ways
to present video programming that gives brighter highlights, more detailed
shadows, and enhanced colors with smoother gradients. HDR and WCG are
display oriented features, dependent on the capabilities of the device presenting
the video material.
Standards have been developed to help manage HDR signal flows, including:
• HDR-10 (for HDMI) - Uses a Perceptual Quantizer (PQ) curve that accounts for
the human visual response to maximize coding efficiency. This standard also
uses static metadata to communicate signal characteristics to the monitor so
it can optimize its display characteristics to match the signal.
• Hybrid Log Gamma (HLG) - Uses a combination log and gamma curve to
achieve coding efficiency of HDR signals while also allowing the same signal
to be shown on both standard and HDR displays. No metadata is required.
Other standards exist, or are in development, including some that have dynamic
metadata, which can be used by displays to adjust for the best possible picture
from scene to scene.
Retained Settings
The FS-HDR stores the current value of each operational parameter in non-
volatile memory so that the system returns to the same state after a power cycle.
Most of the settings for Single Channel mode are stored separately from those for
Four Channel Mode, and vice-versa. These separate settings for each mode can
be changed only when operating in that mode.
The FS-HDR also stores independent values for many settings, so that if the unit
is configured for one operation, changed to a different operation, and then
returned to that prior operation, the settings for that prior operation are restored.
For example, changing the Video Input selection automatically selects new values
for Proc Amp parameters and RGB Proc Amp parameters. This is referred to as
Source Memory.
Each video source remembers its own Proc Amp settings.
Similarly, changing the Output Format selection automatically selects new values
for H & V timing parameters. This is referred to as Output Timing Memory. Each
Output Format mode remembers its own H & V timing settings.
As another example, Output Format Mapping stores the Output Format selected
for any of the frame rates. That Mapped Output Format is recalled if the frame
rate selection is changed.
Presets can also be used to restore the FS-HDR to a previous state. Many
parameters can be individually reset to factory values using individual menus, or
the entire FS-HDR can be reset to defaults (with the PRESET, Factory Preset menu).
Presets for Single Channel mode are separate from those for Four Channel Mode.
Preset changes made in one mode will not affect settings for the other mode.
FS-HDR Frame Synchronizer/Converter/HDR-WCG Processor v1.0r1
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