Cobalt Digital COMPASS 9391 3G_HD_SD-SDI Timecode Burn-In Inserter - Manual (Page 11)

9391-TCB-OM (V1.3) 9391-TCB PRODUCT MANUAL 1-7
Introduction
9391 Functional Description
Timecode Burn-In and SDI Output Insertion
(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 the SDI video input of the card for supported
timecode formats and convert the timecode to either or both ATC_LTC or
ATC_VITC for HD, and ATC_VITC or VITC waveform (with selectable odd/
even field line number control) for SD inputs. VITC waveform received on
the frame reference can be used as a source for all supported video formats.
Priority can be set to choose a particular received timecode format among any
received.
The card can also can receive LTC timecode from either of two RS-485 ports
for insertion as SMPTE embedded timecode formats onto the output video as
described above. A free-run generator selection provides a self-generated
timecode that can also be set as a count-down timecode, with selectable wrap
or halt upon reaching zero.
The timecode burn-in function allows input video SMPTE embedded or
RS-485 LTC as burn-in timecode in any of the following formats:
• seconds
• seconds : frame
• seconds : frame : field
Note: In the above selections, hours : minutes are always present.
The vertical/horizontal positioning and size of the timecode burn-in can be
user-configured.
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
Frame
Reference
Ref VITC
Waveform
Detect/Extract
Audio LTC
Select
RS-485 LTC IN
RS-485 LTC OUT