Nevion FSR-HD - Manual (Page 14)

FRS-HD Rev. G
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3.7 Video processing block
The video processing block consists of a gain and offset adjustment, and a video payload
legalizer.
3.7.1 Gain and offset
The gain and offset adjustment is done separately on the Y, Cb and Cr samples.
Range Gyda
Luma gain 0 – 32767 (0-4x, 1x = 8192)
Chroma gain 0 – 32767 (0-4x, 1x = 8192)
Luma offset (gain =1) -4095
– 4095
(-511.75
– 511.75 in sample values)
Chroma offset (gain = 1) -2047 – 2047
(-255.75 – 255.75 in sample values)
3.7.2 Video payload legalizer
The legalizer hard clips the upper and lower limit of the video payload. With the legalizer
enabled these limits are:
Upper limit Luma: 3ACh
Chroma: 3C0h
Lower limit Luma: 040h
Chroma: 040h
With the legalizer disabled, the video processing block hard clips both luma and chroma
to 3FBh and 004h.
3.8 EDH processing block
If enabled, the EDH processing block extracts the EDH package from the video, updates
the EDH flags according to SMPTE RP165 and inserts the EDH package into the
ancillary data of the video.
If disabled, The EDH processing block only reads, process and report the EDH package
without changing it in video stream.
3.9 Video output selection
The board has four outputs where two and two can be either routed directly from the re-
clocker or routed through the processing unit. In GYDA the direct path is labeled thru
and the processing path is labeled processed.
3.10 Audio blocks overview
Figure 8: Audio function blocks
Audio De-
embedder Audio
Delay Audio
Processing
Audio
Embedder
8 audio
pairs
video
video
Audio
Processing
Audio
DAC
AES
buffer
Analogue
Audio
AES