Specifications
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ambient light
This is the light surrounding
your display.
It may be normal window light,
sunlight, incandescent light, fluorescent light,
and so on. The ambient light makes a difference
in the way colors appear on the screen.
chrominance
This component of the picture
information contains only the color and no
picture detail.
CIE (Commission International de
l’Eclairage)
CIE is the International
Commission on Illumination. The standards
defined by the CIE are specified in terms of the
year they were created. For example, the 1931
CIE color model is the standard created in 1931.
ColorSync
This is a system extension that
provides color-conversion capabilities and
improves color consistency. ColorSync translates
the colors used on one device, such as the
AppleVision 1710AV Display, so that they match
the colors displayed on another display, or
printed on a color printer.
ColorSync profile
This is the profile for the
display that is automatically installed as part of
the display software. You can create a ColorSync
profile that describes the white point setting for
each individual display. You can use this profile
with any display that supports Apple’s
ColorSync color matching system.
Energy Saver
Energy Saver 1.1 is an energy
conservation control panel that allows you to tell
the display to conserve energy after a specified
period of inactivity. If you turn on Energy Saver,
the screen dims when the keyboard or mouse has
been inactive for a specified period of time. You
can access the Energy Saver panel from Control
Panels in the Apple (
) menu.
Energy Star
When the display detects the loss
of certain signals from the CPU, it goes into a
low-energy sleep mode. The U.S. Environmental
Protection Agency recently initiated a
certification program called Energy Star to
recognize products that support this
power-saving mode.
The EPA Energy Star logo
on the display indicates that it complies with the
EPA’s Energy Star program.
fixed-frequency displays
Also known as
single-mode displays, these displays are capable
of supporting only one frequency or resolution.
The Apple RGB 13” display is an example of this
type of display. See also
multiple-scan displays
.
gamma correction
This is a technique that
adjusts the
gamma curve
to compensate for the
loss of detail in dark objects.
gamma curve
This is the relationship between
color intensity (
chrominance
) and light
(
luminance
). With a low gamma curve, colors are
washed out. With a high gamma curve, colors
have more contrast.
gamut
The full range of colors the display can
produce on the screen. Sometimes referred to as
the color gamut.
Kelvin
A temperature scale used in scientific
applications. Used to measure white point in the
color display.
luminance
This component of the picture
information is responsible for detail, shapes, and
shadings.
MovieTalk
Apple’s trademark for a network
protocol designed to handle audio and video
data streams efficiently. It is part of QuickTime
Conferencing. The MovieTalk protocol
establishes a set of rules for setting up,
maintaining, and breaking down a connection
and for delivering media data. It consists of a
media stream protocol and a connection control
channel protocol. The MovieTalk protocol is
platform and media independent.
multiple-scan displays
These displays can
support a range of frequencies and resolutions,
for example the AppleVision 1710AV and 1710
Displays. See also
fixed-frequency display
s.
Glossary
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