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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
The High-Definition Multi-media Interface (HDMI) is an industry-supported,
uncompressed, all-digital audio/video interface. HDMI provides an interface between
any compatible digital audio/video source, such as a set-top box, DVD player, and
A/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-Definition Television. The high-resolution subset of our DTV system. The ATSC
defines HDTV as a 16:9 image with twice the horizontal and vertical resolution of
our existing system, accompanied by 5.1 channels of Dolby Digital audio. The
CEA defines 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
Video Electronic Standards Association, a consortium of manufacturers formed to
establish and maintain industry wide standards for video cards and monitors. VESA
was 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