Cobalt Digital COMPASS 9064 Up_Down_Cross Converter - Manual (Page 14)

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9064 Functional Description
1-10 9064 PRODUCT MANUAL 9064-OM (V4.1)
Closed Captioning Processor
This function provides support for closed captioning setup. The function
receives closed captioning data from the incoming SDI stream and outputs
closed captioning on a selectable VANC line number when the output is HD
(for an SD output, the line number is fixed at 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 9064. 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.