Cobalt Digital COMPASS 9067 Upconverter - Manual (Page 13)

9067-OM (V4.4) 9067 PRODUCT MANUAL 1-9
Introduction
9067 Functional Description
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,
SDI ATC_VITC, SDI ATC_LTC, and audio LTC timecode sources. Audio
LTC can be received over a selected embedded input. 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 audio LTC, as well as RS-485 LTC.
Audio LTC can be received or sent over a selected balanced analog audio
input, or as digital audio over a selected embedded or AES input.
Figure 1-2 Timecode Processor
SDI VITC
Detect/Extract
SDI ATC_LTC
Detect/Extract
SDI ATC_VITC
Detect/Extract
Priority/
Select
SDI
Video
Input
SDI VITC
Timecode
Proc/Embed
ATC_VITC
Timecode
Proc/Embed
ATC_LTC
Timecode
Proc/Embed
HD/SD–SDI
Video Output
Insert
Control
Line
Number
Control
Buffer/
Format
HD/SD–SDI
(From Video Proc)
Audio LTC
Select/Extract
Audio/
RS-485 LTC
Audio/RS-485
LTC Generate
Audio LTC Out
RS-485 LTC Out