
CAT-5
Category 5 cable, commonly known as Cat 5, is an unshielded twisted pair type cable
designed for high signal integrity. The actual standard defines specific electrical properties
of the wire, but it is most commonly known as being rated for its Ethernet capability of 100
Mbit/s. Its specific standard designation is EIA/TIA-568. Cat 5 cable typically has three
twists per inch of each twisted pair of 24 gauge copper wires within the cable.
CAT-5e
Similar to Cat 5 cable, but is enhanced to support speeds of up to 1000 megabits per
second.
DDC
Short form for Display Data Channel. It is a VESA standard for communication between
a monitor and a video adapter. Using DDC, a monitor can inform the video card about its
properties, such as maximum resolution and color depth. The video card can then use
this information to ensure that the user is presented with valid options for configuring the
display.
DDWG
Digital Display Working Group DDWG are the creators of the HDMI specification.
HDMI
TheHigh-Definition Multi-mediaInterface(HDMI)is an industry-supported,uncompressed,
all-digitalaudio/video interface. HDMIprovidesan interfacebetweenany compatible digital
audio/video source, such as a set-top box, DVD player, andA/V receiver and a compatible
digital audio and/or video monitor, such as a digital television (DTV).
HDCP
High-Bandwidth Digital Content Protection. Created by Intel, HDCP is used with HDTV
signals over HDMI and HDMI connections and on D-Theater D-VHS recordings to prevent
unauthorized duplication of copy written material.
HDTV
High-DefinitionTelevision.Thehigh-resolutionsubsetof our DTV system.TheATSCdefines
HDTVasa16:9imagewithtwice the horizontal and vertical resolution ofourexistingsystem,
accompanied by 5.1 channels of Dolby Digital audio. The CEAdefines HDTV as an image
with 720 progressive or 1080 interlaced active (top to bottom) scan lines. 1280:720p and
1920:1080i are typically accepted as high-definition scan rates.
VESA
VideoElectronic StandardsAssociation,aconsortium of manufacturersformedto establish
andmaintainindustry wide standardsforvideo cards andmonitors.VESAwas instrumental
in the introduction of the Super VGA and Extended VGA video graphics standards with
a refresh rate of 70 Hz, minimizing flicker and helping to reduce user eyestrain and
fatigue.
TERMINOLOGY
9