Here are some terms to know if you're shopping for a high-definition TV:
ASPECT RATIO:
It refers to the width/height ratio on the screen. Wide screens are 16:9 and traditional sets are 4:3.
Cathode ray tube, the conventional technology for TV sets, as opposed to plasma and other, newer types.
DIRECT-VIEW TV:
These high-definitions sets look like traditional conventional sets with a cathode ray tube.
Digital light processing, a display technology that uses a chip and thousands of tiny mirrors to create the image.
Liquid crystal display, a flat-panel display.
LCoS:
Liquid crystal on silicon, a display chip technology.
EDTV:
Enhanced Definition Television, which displays a digital 480p image, but not the 720p or 1080i resolution for high definition.
HDTV:
High Definition Television, which displays 720p or 1080i or higher resolutions.
HDTV-READY:
High-definition sets that don't include a built-in tuner. They require a cable, satellite or set-top tuner to receive digital signals.
PLASMA:
A flat-panel display technology that uses tiny tubes filled with gas that glow to create the image, they can be up to 80 inches.
PROJECTION SYSTEM:
A display technology in which an image is cast onto a reflective screen. There are two choices: front or rear projection. Consumers can choose between having everything in a single unit and a system that uses separate projectors.
SDTV:
Standard Definition Television, which display better pictures than an analog TV but not as good as EDTV.
