Cobalt Digital FUSION 3G 9901-UDX 3G_HD_SD Up Down_Cross Converter - Manual (Page 13)

9901-UDX-OM (V1.15) 9901-UDX PRODUCT MANUAL 1-9
Introduction
9901-UDX Functional Description
Ancillary Data (ANC) Extract/Processing
This function extracts and preserves VANC and HANC data prior to scaling,
and in turn allows the data to be re-inserted in the output SDI. The card
monitors SDI program video (and, where applicable, analog Y-channel VANC
and the reference signal) for the following ANC data and reports status and
line number:
• Closed Captioning
• VBI Dolby ® Metadata
• SMPTE embedded video timecode
This function allows insertion enable/disable of the ANC data items, as well
as output line control and prioritization selection for timecode formats. The
various ANC data items are forwarded to related functional blocks within the
card where the ANC items are applied to perform their functions (for
example, closed captioning waveform-to-packet translation/regeneration
using the extracted closed captioning ANC).
Following the scaler function, the processed ANC data is reintegrated into the
SDI stream in accordance with the ANC control performed within this block.
Scaler Function
The scaler function provides up, down, and cross-conversions (UDX)
between multiple standard SD and HD video formats, multiple frame rates,
and cross-conversion between interlaced and progressive formats.
Table 1-3 lists the 9901-UDX conversion choices available for various input
formats and frame rates. To use the table, locate the input format on the
respective
Input Format row in the far left column. Valid conversions are
shown in Scaler Output Selections columns to the right. Where an X appears,
this denotes a conversion that is not available for a given input format.
Note: In no case is the Scaler capable of converting from a clock standard to a dif-
ferent unrelated standard (e.g., 59.94 Hz NTSC to 50 Hz PAL).
The scaler function also provides aspect ratio conversion that provides a
choice from several standard aspect ratios. Additionally, user defined and
“Follow AFD Settings” conversion can be applied. User defined settings
allow custom user-defined H and V aspect ratio control. “Follow AFD
Settings” sets the output aspect ratio to track with AFD (Active Format
Description) settings embedded in the received video signal.