InFocus Genesis P130 Manual De Instrucciones página 57

Glosario de términos
Term Description
Bandwidth The number of cycles per second (Hertz) expressed as the difference
between the lower and upper limits of a frequency band; also, the width
of a band of frequencies. Practically speaking, bandwidth is the amount
of data that can pass through a given connection per unit of time.
Barrel Distortion where screen image expands outward towards edges of
Distortion the screen. Instead of being square, edges are curved outward like
the edge of a barrel. Opposite of pincushion.
Bezel The frame or face of a device, such as, a projector grill, or CRT or
LCD display frame.
Black Level The darkest part of a picture. This can vary between display devices
and viewing environments. NTSC black is set at 7.5 IRE, which is
very slightly gray. The white level divided by the black level gives a
contrast ratio for a particular display device.
Blackboard Blackboard mode is a projector feature that allows the projector to detect
Mode the colour of the display surface such as a chalkboard of painted wall and
automatically adjust its output to optimize accurate colour reproduction.
Blanking The period of time that an electron gun is turned off to reposition
itself to paint the next part of the video onto the CRT screen.
Bleeding Video distortion where colour "bleeds" from an object onto other
parts of the image which are not supposed to be that colour.
Blue Laser Colour of the laser used with Blu-ray high definition DVDs. Blue laser
light has a shorter wavelength than red, which is why blue lasers can
retrieve and store more data in a given physical area.
BNC Bayonet Nut Connector or British Naval Connector. A high quality,
locking cable plug which is used extensively in professional video.
Bowing Video distortion where lines which should be straight are curved. See
barrel distortion and pincushioning.
Brightness Overall light output from an image. While a brightness control can
make an image brighter, it is best used to better define the black
level of the image.
Brightness The brightness of a projection system can be precisely measured
(Perceived) with a light meter. For example, a typical movie theater is setup to
deliver 16 foot-Lamberts. The higher the foot-Lamberts, the brighter
the image. A common misconception is that a projector with twice
the foot-Lamberts of another projector will be twice as bright. While it
is true that a light meter will detect it as twice as bright, your eye will
not. The perceived brightness will increase by about 50%. It will not
double because the human eye has a logarithmic respond to light.
BrilliantColor� Brilliant Color - a technology developed by Texas Instruments
DLP
green, blue, cyan, magenta, and yellow; thereby, allowing an increase
in the colour gamut.
Calibrate To adjust with reference to a standard.
Channel A separate signal or signal path.
®
projectors that produces six channels of colour including red,
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for its
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