Video Processing Description - Cobalt Digital Inc 9902-DC-4K Product Manual

Introduction

Video Processing Description

9902DC4K-OM (V1.5)
The 9902-DC-4K precisely combines four quadrant-divided or 2SI individual
SDI feeds into a combined SDI image directly suitable for broadcast
production usage or monitoring purposes. The combined SDI output can be
scaled to 3G/HD-SDI. An HDMI output is also furnished which is directly
usable by a monitor. The 9902-DC-4K features input select, timing alignment,
and quadrant combining/scaling functions as described below.
Input Video Select Function
The input select function flexibly allows the up to four quadrant SDI inputs to
be assigned to each of the four image quadrants comprising the overall
combined-output raster. This function also allows setting the card for 4K
quadrant-division or 2SI input modes. Using this function, the up to four
inputs can be rearranged if necessary and as desired to correlate the quadrant
inputs to the combined-image output.
Output Format (Scaler/Combiner) Function
This function provides conversion of each quadrant input to match a common
user-selected format, resulting in images that are format-matched and suitable
for combining into a single combined image. The combined output can be
converted to 1080p or 1080i SDI formats, with user selection of 50, 59.94, or
60 Hz frame rates.
Quad Timing Alignment Function
Option provides for frame alignment control of the up to four quadrant
+FS
inputs using either one of two external
distributed with the card frame,
(free-run) as a reference source. As such, the card can accommodate
asynchronous program video inputs.
This function also allows frame offset delay to be added between the output
video and the frame sync reference.
Selectable failover allows alternate reference selection should the initial
reference source become unavailable or invalid.
9902-DC-4K PRODUCT MANUAL
9902-DC-4K Functional Description
FRAME REF IN (1,2)
as a frame reference, or internal
Input A
reference signals
1-7