V0.8
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Cobalt Digital 2005
Overview
The 5821-D is a high quality 10-bit, HD down-converter with SD pass-through and individual
ARC controls for HD and SD inputs. The 5821-D bridges SMPTE 292 high definition (HD) and
259M-C standard definition (SD) signal formats; allowing high density and low power
conversion of HD signals. Conversion densities can be as high as 12 cards (conversions) per 2U
frame.
The 5821-D will down-convert HD to SD serial component digital and analog composite video.
This unit can re-aspect the image with separate rules for HD vs. SD inputs and adds 3:2 pull-
down to 23.98 p/sF or i inputs. In addition, safe area reticule overlays, 4x3 and 16x9, full
aperture for 4x3 and center cross can be selected on the SD-SDI and/or composite outputs.
The image processing is full 10-bit using a 24-tap spatial filter. Down-conversions of HD to SD
signals are de-jittered to reduce chroma phase jitter of SD analog signals. The analog output is
encoded at 12-bits to preserve the 10-bit video signal.
The input and outputs of the 5821-D are the following. One dual-rate HD/SD serial digital input,
two reclocked copies of the input, two SDI of down-converted HD or SD pass through or ARC’d
digital outputs and one SD Analog composite output.
