Grass Valley 4300 Krystal Reference Manual v.3.1 - Manual (Page 27)

Krystal 4300 Reference 1-15
Physical Description
Module Descriptions
CAUTION Modules in Krystal systems cannot be hot-swapped safely. Always power down
Krystal frames before removing or inserting Krystal modules.
■ Serial Input and Output I/O modules — Serial Input modules convert
incoming serial digital component video signals to parallel format for
internal processing by the Video Processor frame. The Serial Output
modules convert parallel video back to serial digital format.
■ Effect Manager CPU and I/O modules — The Effect Manager module
calculates the parameters required, and stores these effects parameters.
It passes these parameters to the Video Processor CPU which uses them
to control the video processing electronics. Multi-channel systems use
a different type of Effect Manager, and in these systems the Effect Man-
agers are located in the System Controller frame.
■ Video Processor CPU and I/O modules — Each Video Processor CPU
module controls the operation of the modules and options installed in
a single Video Processor frame. It receives the parameters to produce an
effect from the Effect Manager and passes them to the video modules in
that frame. Two different Video Processor I/O modules are available,
one for single channel Krystal systems and one for pooled Krystal sys-
tems.
■ Reverse Address Generator (RAG) module — This module continually
calculates the source pixel address for each output pixel in the trans-
formed video.
■ Post Transform module — Using addresses from the RAG module, this
module generates offset addresses for key and video drop shadows. It
also generates perspective fade, blur, and dim effects.
■ Interpolator modules — Using addresses generated by the RAG and
Post Transform modules, these modules look at the source video and
determine the pixel values to be used in the transformed video output.
■ Filter Control module — This module uses transform information to set
up filter control factors (for each input pixel) to control the Filter
module.
■ Filter module — This module provides anti-aliasing filtering for effects.
It also provides motion detect functions, an embossed video function,
and a key processor for mixing video with defocused video and/or
mattes.
■ Source Effects module — This module provides a number of functions,
including external mask processing, mask pattern generation, self and
external key processing, rectangular and pattern crops, coring, video
bitmap, hue rotation, and picture border generation.
■ Reference Generator module — This module generates internal syncs
and clocks from the facility reference (color black).