IEEE 1394
This was meant to be an enabling technology that would allow all things in your home theater to connect using this compressed digital interface. IEEE1394 (aka FireWire) makes allowances for 5C which would allow original broadcasters the ability to choose which type of copy control they want to use. The options given to broadcasters are: Allow copying; allow copying only once; or no copying allowed.

Illuminated Remote
A remote that has backlights for easy viewing in the dark. This is an especially nice feature when watching movies or television at night or in a dark room because you can read the buttons on the remote without having to turn a light on in the room. Many remotes that are not actually ‘illuminated’ do glow after being placed in a bright light and will glow for some time after, but don’t actually have a backlight in the remote itself.

In Stock
Denotes if the specific product is currently available in stock at the specific retailer and is ready for shipment when you place the order.

Interlaced
HDTV is scanned in two different ways, one being progressive and the other being interlaced. Interlaced scanning is when the TV uses two separate passes to make an image on the TV. The first pass will display the odd horizontal lines such as 1, 3, 5, 7 and so on. On the next pass it displays the even lines such as 2, 4, 6, 8 and so on. Since this is done so fast the human eye sees this as being one picture instead of two. After the second pass the third will go back to displaying the odd lines, then even again and so on.

INVAR Shadow Mask
This is a feature that improves the quality of your picture on a Cathode Ray Tube television. Usually, as a TV gets hotter, a perforated metal called the shadow mask expands, causing the picture to blur. More expensive TVs use an alloy called Invar that does not lose its shape as it gets hotter.

IRD
Integrated Receiver Decoder. This is your the same thing as your DSS receiver.

ISF
The Imaging Science Foundation is in the Display Standards industry, and is dedicated to improving the quality of electronic imaging. ISF calibration is when you use an ISF technician to calibrate your television so that the image is as clear as it can possibly be on your TV.