Cobalt Digital COMPASS 9068 Upconverter - Manual (Page 12)

1
9068 Functional Description
1-8 9068 PRODUCT MANUAL 9068-OM (V4.2)
Timecode Processor
(See Figure 1-2.) This function provides for extraction of timecode data from
the input video, and in turn re-insertion of timecode data into the output SDI.
In this manner, timecode data can be preserved, even after format conversion.
The function can monitor the SDI video input of the card for supported
timecode formats, and then select and prioritize among SDI VITC, and
SDI ATC VITC timecode sources. If the preferred format is detected, the
preferred format is used by the card; if the preferred format is not detected,
the card uses other formats (where available) as desired.
The function also provides conversion between various timecode formats and
provides independent insertion and line number controls for each SDI
timecode output format.
Option +LTC allows bidirectional transfer and conversion
between VBI formats over SDI and RS-485 LTC.
Figure 1-2 Timecode Processor
Closed Captioning Processor
This function provides support for closed captioning setup. The function also
allows the selection of the ancillary data line number where the ancillary
closed caption data is stored when the output is HD.
SDI VITC
Detect/Extract
SDI ATC_VITC
Detect/Extract
Priority/
Select
SDI
Video
Input
VITC Waveform
Timecode
Proc/Embed
ATC_VITC
Timecode
Proc/Embed
Video Output
(to Processed
SDI DA)
Insert
Control
Line
Number
Control
Buffer/
Format
HD/SD–SDI
(from Scaler)
LTC Select/
Extract
RS-485 LTC In
LTC Generate RS-485 LTC Out