3-13
Switcher Module Description
Keyer Carrier Module (064804)
The Keyer Carrier Module accepts serial video signals and keys from the
Crosspoint Module and parallel keys and shaped video from the Chroma
Keyer Module for that M/E. The outputs are shaped video and clipped and
gained keys. Outputs are sent to the Mixer Interface Modules.
The Keyer Carrier Module does the following:
■Converts video from serial to parallel (not used with chroma key)
■Interfaces to the optional BORDERLINE Mezzanines (key layer only)
■Bypasses BORDERLINE mezzanine if not installed
■Interfaces to the Key Processor Mezzanines
■Can do a non additive mix with the other Keyer Module in that M/E
■Routes wipe and wash information from the Mix/Wipe Module to the
Key Processor Mezzanine Module
■Generates Box Mask for the Keyer Mezzanine Modules
■Transfers key and video fill information from Chroma Keyer Module
to Keyer Mezzanine Module
■Before being sent off the module, the video signals first have the
chrominance and luminance recombined.
There are two Keyer Carrier Modules for each M/E for a total of four
modules. Each Keyer Carrier Module has connectors for two Keyer
Mezzanine Modules and one BORDERLINE Mezzanine. There is circuitry
for interfacing to each of these mezzanine modules. The input signals for
each Keyer Carrier Module are the following:
Serial video from the Crosspoint Modules:
■One background video and its key source
■One key and its video fill