PAL - (Phase Altering Line standard) - This alternative to NTSC has 625 lines, interlaced, 50 fields per second. It is used in most of Europe, Asia (except USSR), Africa, and Australia, and parts of South America.
Datacasting - Also known as "enhanced TV." Datacasting is the act of providing enhanced options offered with some digital programming to provide additional program material or non-program related resources. This allows viewers the ability to download data (video, audio, text, graphics, maps, services, etc.) to specially equipped computers, cache boxes, set-top boxes, or DTV receivers.
Baseband Video - Unmodulated analog video signal.
TCP/IP - " Transmission Control Protocol/Internet Protocol." TCP/IP is the method most commonly used in the Internet to transfer data, including streaming video and audio, between computers.
Digital Cable - A service provided by many cable providers, digital cable offers viewers more channels. Contrary to many consumers' beliefs, digital cable is not the same as High-Definition Television or digital television; rather digital cable simply offers cable subscribers the options of paying for more services. Digital Monitor - DTV monitors are televisions that can display a digital signal but lack an integrated tuner (unlike an integrated digital set), and thus cannot receive a digital broadcast signal without an additional set-top box.
Aspect ratio - The ratio of screen width to screen height. For TVs it is either 4:3 (1.33:1) or 16:9 (1.78:1). Theater film uses many different aspect ratios, some as high as 2.5:1.
Channel - A 6 MHz (bandwidth) section of spectrum for over-the-air broadcast (channels 2 - 69) or in TV cable that carries one analog NTSC program or one or more DTV programs.
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