InFocus Genesis P130 Manual De Instrucciones página 65

Glosario de términos
Term Description
Horizontal Period of time it takes to refresh an image on a screen, usually
Scan Rate measured in Hertz (cycles per second). Computer monitors typically
have scan rates starting at 60Hz going to 85Hz.
Hue Hue or tint is the parameter of colour that allows us to distinguish
between colours.
Hz Hertz. Also called cycles per second and in video displays is the rate
at which an image is refreshed.
IEEE 1394 Also called FireWire or iLink. A serial bus which can address up to 63
devices, communicating at up to 400Mbps but is limited to a cable
length of 4.5 meters. Its content copy protection scheme is called
DTCP or 5C. Most DV camcorders have a IEEE 1394 port as well as
D-VHS VCRs and some set-top boxes for cable and satellite.
Infra-red An infra-red (IR) remote control transmits in the spectrum of infra-
Remote red light, such as a television remote. Unlike RF remotes, IR remotes
must point at the receiver (line of sight) or reflect the IR from the
screen to the receiver.
Most projectors have an IR sensor in both the front and rear of the
projector, whereas, flatpanels generally have a single IR sensor in
the front of the unit. When working at or near the maximum distance,
pointing right at the receiver will give better results.
Input Lag Input lag is the delay between your video source sending a frame to your
projector and the projector actually displaying that frame. This is a very
important aspect of gaming, where an input lag of 40ms or less is preferred.
Interactive Interactive projectors became popular in 2010 and come in many
Projector variations. This technology encompasses any solution that enables
active participation by the user with the projected content, rather
than just the passive viewing of content.
Typically the presenter is allowed to interact with either the projected
image, the projector, or in some cases another device, using either an
electronic pen, a mechanical pen or even a finger. These Interactive
Projectors essentially create an electronic whiteboard on any surface
where the image is projected allowing the presenter to interact with the
projected image using a stylus that may be electronic or mechanical.
Some interactive projectors allow user generated information to be captured
and replayed, printed, or copied with or without the original projected image.
Interlaced A process where a video image is delivered in two fields each
containing half the video image rather than a single frame that
contains the entire image. The first field contains all the odd lines and
the second field contains all the even lines. For example, each 480i
frame is made up of two fields of 263 and 262 lines of resolution and
updated at 60Hz. 480 deNOTAs the active picture area; however, the
total frame size is actually 525 lines. 480i and 1080i are interlaced
signals whereas 720p is a progressive signal where each video image
is delivered in a single frame. Interlaced video was introduced with
the first televisions because of bandwidth limitations.
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