NTSC - (National Television System Committee technical standard) - This is analog TV invented in 1946. NTSC has 525 lines (483 visible) interlaced, 60 fields per second. This standard is in use in North America, Japan, South Korea, Burma, Taiwan, the Philippines, and much of South America.
Cropping factor - Many digital SLRs use an image sensor that is smaller than 35mm film. If you attach a lens to one of these cameras, its 35mm equivalency will be multiplied by the cropping factor-a manufacturer's specification. For example, if your digital SLR has a cropping factor of 1.6x, then a 50mm lens mounted on your camera will have a 35mm equivalency of 80mm. That is, the 50mm lens will yield the same field of view as an 80mm lens on a 35mm camera.
Set-top box (STB) - A box, similar to the familiar cable box, that is capable of receiving, decoding and sending to the associated television the picture and sound of the selected DTV broadcast. The use of an STB would allow the use of conventional televisions to receive DTB programs, but at reduced levels of resolution and with imperfections due to aspect ratio differences, leading to letterboxing or cropping of the sides of the picture.
Byte - A bundle of data containing eight bits. This is the common size unit for computer data.
Quick Set Record (QSR, QTR, XPR) - A one-touch button that allows instant recording for 30, 60 or 90 minutes. This feature eliminates the need to use the programming mode.
Artificial Intelligence Sound Level Control - Controls the volume level automatically to prevent wide variations in volume among different TV channels and types of programming.
Focal Length - A lens measurement (in millimeters) that determines how big an image will be. It's the focal length which determines the perspective, i.e., wide angle through telephoto.
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