Cobalt Digital COMPASS 9822 Downconverter - Manual (Page 13)

9822-OM (V4.1) 9822 PRODUCT MANUAL 1-9
Introduction
9822 Functional Description
Dolby ® Metadata Extractor/Re-inserter
This function extracts and preserves Dolby ® metadata from the input SDI, and
in turn allows the metadata to be re-inserted in the output SDI. This allows
format conversions without losing Dolby
® metadata. (The 9822 does not offer
Dolby ® decoding or encoding, but will pass Dolby ®
E and/or Dolby ®
Digital™ encoded signals and metadata intact.) The extracted metadata is
buffered and then output on a user-selectable line number on the SDI output.
Closed Captioning Processor
This function provides support for closed captioning setup. The function
receives closed captioning data from the incoming HD stream and outputs
closed captioning on SD standard line 21.
AFD Processor
This function provides aspect ratio controls and assignment of AFD codes to
the SDI output video.
Using this function, aspect ratios in accordance with the standard 4-bit AFD
codes can be applied to the output video. Additionally, custom aspect ratios
can be independently defined for any of the AFD codes.
Separate, independent AFD controls are provided for both 16:9 coded and 4:3
coded frames.
This function also provides AFD-controlled ARC by checking for any
existing AFD code within the received video input. If a code is present, the
code is displayed. With the Scaler function
Aspect Ratio Conversion set to
Follow AFD Settings , the H and V settings corresponding to the received code
are applied to the video by the 9822. The default, standard aspect ratio
described by the AFD code can be applied, or custom horizontal/vertical
scaling can be applied for a given code.
The function also allows the selection/changing of the AFD code ancillary
data line number for the outputted AFD code.
Audio Processor Description
The audio processor operates as an internal audio router. The router function
chooses from the following inputs:
• 16 channels of embedded audio from the SDI video input
• Four independent internal tone generators (described below)
• Down Mix Left (DM-L) and Down Mix Right (DM-R) (described
below)
• Digital silence (mute) setting