Cobalt Digital COMPASS 9381 HD_SD-SDI Timecode Inserter - Manual (Page 11)

9381-OM (V4.3) 9381 PRODUCT MANUAL 1-7
Introduction
9381 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.
The function can monitor both the SDI video input and an analog VITC input
of the card for supported timecode formats, and then select and prioritize
among analog VITC, SDI VITC, SDI ATC_VITC, and SDI ATC_LTC
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. Bidirectional transfer and conversion
between VBI formats over SDI and audio LTC, as well as RS-485 LTC is also
accommodated. Audio LTC can be received or sent over an RS-485 port, or as
digital audio over a selected embedded audio channel input/output.
The function also provides conversion between various timecode formats and
provides independent insertion and line number controls for each SDI
timecode output format.
Figure 1-2 Timecode Processor
AFD Inserter
This function provides for assignment and insertion of AFD codes into the
SDI output video. Using this function, AFD codes in accordance with the
standard 4-bit AFD code designations can be applied to the output video.
Analog VITC
Detect/Extract
Analog
Video
Input
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
Audio LTC
Select/Extract
Audio/
RS-485 LTC
Audio/RS-485
LTC Generate Audio LTC Out
RS-485 LTC Out
HD/SD–SDI
(From Video Proc)