Digital TV(DTV):
Television delivered and displayed using radio frequency waves that containing information that is digitally encored for improved quality and efficiency. DTV comes in three levels of pictures.

Standard Definition TV(SDTV):
Basic digital television transmission that may be displayed with fewer than 480 progressively scans lines (480p) in 16x9 or 4x3 format. 480 interlaced (480i) is the quality of today’s analog TV system.

Enhanced Definition TV(EDTV):
A better digital television transmission that SDTV with at least 480p in a 16x9 or 4x3 display and Dolby Digital surround sound. 480p is the quality by most DVD players.

High-Definition TV(HDTV):
The best quality digital picture, widescreen (16x9) display with at least 720 progressively scanned lines (720p) or 1080 interlaced lines and Dolby digital surround sound.

HDTV Monitor (sometime called HDTV ready):
A set that can display HDTV programming if you have a separate HDTV tuner, HD cable set-top box or HD Satellite Set-top box.

HDTV Tuner:
A device capable of receiving and outputting HDTV signals for display, may be stand alone or integrated in the set.

Integrated HDTV:
An HDTV that has the digital tuner built into the set. It does not need a separate set-top box to receive over the air DTV signals.

Plug-and-Play or Digital Cable Ready:
A DTV or other device for cable customers that plugs directly in to the cable jack and does not require a separate box. Plug-and-Play Tv owners must obtain a Cable Card from their cable company in order to view scrambled programming services.

Interlace Scan:
A way to scan vertical lines onto a TV picture by scanning all the odd lines first, then filling in the even lines (this happens instantaneously)

Progressive Scan:
A way to scan vertical lines onto a TV picture by scanning all the lines consecutively (Progressively)

Aspect ratio:
4x3 Traditional TV ‘Aspect ratio” that is, the screen’s width as compatred to its width as compared to its height. 16x9 Widescreen TV “Aspect Ratio” that is more like a movie screen than a traditional TV. For example, a 32” TV screen would be 28 inchen wide and 16 inches tall.

Digital Television(DTV):
This is an entirely new technology that will ultimately replace todays analog TV’s. Digital signals are transmitted using computer code- ones and zeroes which means they are less susceptible to interface and provide video a higher quality picture and sound than analog.

High-Definition TV(HDTV):
This is the best quality DTV. HDTV’s surround=d sound and picture quality are many time better than today’s analog TV. DTV also can be standard definition (SD) or enhanced definition.(ED)

What you need to watch DTV:
DTV is available over the air using a standard antenna or via digital cable or satellite. No matter how you receive your TV signal you will need DTV equipment to watch the DTV programming.

DTV equipment may be purchased as an all in one or component solution:
Integrated DTV with built in tuners are an all in one solution for DTV- they include a digital tuner to receive over the air DTV broadcasts and a monitor to display the programming.

A “Component” Solution; includes a DTV monitor (screen) without a DTV tuner. Monitors must be paired with a cable or satellite set-top box, or stand-alone DTV tuner.


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