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TECHNOLOGY TERMINIATION
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 DVI specification.
DVI
Digital Visual Interface. Connection standard developed by Intel for connecting computers to digital
monitors such as fl at panels and DLP projectors. A consumer electronics version, not necessarily
compatible with the PC version, is used as a connection standard for HDTV tuners and displays.
Transmits an uncompressed digital signal to the display. The latter version uses HDCP copy
protection to prevent unauthorized copying.
HDCP
High-Bandwidth Digital Content Protection. Created by Intel, HDCP is used with HDTV signals over
DVI and HDMI connections and on D-Theater D-VHS recordings to prevent unauthorized duplication
of copy written material.
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).
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.
RS-232
Recommended Standard 232. This is the de facto standard for communication through PC serial
ports. It can refer to cables and ports that support the RS232 standard.
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.
