Grass Valley Kalypso User Manual V.15.0 - Manual (Page 94)

94 Kalypso — User Manual
Section 2 — Concepts
is learned into an effect register, and can then be recalled at a later time with
a single button press. Effects can be edited after they have been learned,
and effect data can also be saved to and loaded from disk.
Work Buffer
The work buffer is a fundamental aspect of system operation. The work
buffer contains the current state of the system, specifying the sources
selected and the video processing applied to those sources. The work buffer
tracks all the system parameters, including those that do not have controls
delegated. As the operator delegates and alters control panel and menu set-
tings, the associated parameters in the work buffer change. If any altered
work buffer parameters affect the video outputs of the switcher, the
appearance of these outputs will change accordingly.
Keyframe
A single set of processing control settings can be called a keyframe. A key-
frame defines the state of all or a portion of the switcher. Keyframes are
stored in E-MEM effect registers. Two types of information are associated
with a keyframe:
• On/off settings, including source selections, and
• Parameter settings (variable adjustments).
For example, an effect can consist of a keyframe specifying source 1 on
M/E-1’s background A bus, source 2 on its background B bus, a horizontal
wipe transition type, and a border. These are button settings, as they can be
turned on and off. The border could be thick and colored red. These are
parameter settings because a range of continuous values are available.
Note that this effect could be learned as a 30 frame effect dissolve
(described later in this section), which also has a time value.
Effect Register, Work Buffer, and Current Effect
For clarity, the following description uses single keyframe effects. Multiple
keyframe effects are discussed later (see
page 96 ).
The Kalypso system has 100 E-MEM registers (numbered 0 - 99) able to
store operational settings for immediate recall. Effect register data must be
applied to the work buffer before these settings can affect the system. When
an effect register is recalled, keyframe data is loaded into the work buffer,
and that register number becomes the current effect (
Figure 70 ). The current
effect is an important concept, as it defines a relationship between the effect
registers and the work buffer. Only a current effect can be run or edited.