Cobalt Digital FUSION 3G 9931-EMDE 3G_HD_SD-SDI Embedder_De-Embedder - Manual (Page 16)

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9931-EMDE Functional Description
1-12 9931-EMDE PRODUCT MANUAL 9931-EMDE-OM (V1.15)
ARC Processor
(See Figure 1-3.) This function uses extracted Aspect Ratio Control (ARC)
data from the input video (in either AFD, WSS, or VI formats) and provides:
• Format translation between AFD, WSS, and VI ARC formats.
• H/V cross-conversion matrix in which a received code directs a same
or other user-selectable alternate H/V ratio on the output for any of
several H/V ratios.
The input video is checked for ARC formats and can be set to provide a
trigger upon when a selected ARC format is received, the code associated
with the received format can be applied to the output as a translated format
(for, example, from WSS to AFD). Received H/V codes can also be applied
through an H/V conversion matrix that allows alternate H/V ratios for a given
received input code. The ARC code format priority works in that AFD has
highest priority, with WSS or VI selectable as the next priority. In conjunction
with a user-accessible cross-matrix table, the received code then in turn
directs any of several user-selectable H/V settings to be inserted on the output
video as AFD, WSS, and/or VI codes. AFD, WSS and/or VI can be rejected
for input consideration.
Figure 1-4 ARC Processor
Closed Captioning Processor
This function provides support for closed captioning setup. When enabled,
the function allows passage of timecode data. The function also allows the
selection of the ancillary data line number where the ancillary closed caption
data is outputted when the output is HD.
Format
Detect/
Select
Output
ARC
Cross-
Matrix
Program
Video
Input
AFD Generate/
Insert Control
WSS Generate/
Insert Control
VI Generate/
Insert Control
AFD
WSS
VI
Program
Video
Output
Note: 1. Line number control available only for AFD
format. WSS and VI use fixed line numbers per
applicable standards.
2. Some AFD codes are not supported in VI and
WSS formats.