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.
HDTV - (High Definition TV) - A TV that displays 1280x720 pixels or better.
OAR - (original aspect ratio) - Also called Letterbox format, OAR means that none of the image is clipped or squeezed. Unused parts of the screen are usually black.
Letterbox - The full display of a wide aspect ratio 16 - 9 picture on a display of aspect ratio 4 - 3 will result in black bars above and below the picture. This arrangement is referred to as "Letterbox" and is often seen during movies shown on television.
8VSB modulation technique - (8-level vestigial sideband) - DTV stations in the U.S. use 8VSB modulation. This is an AM mode wherein the carrier is multiplied by an 8-level digital signal, and then a filter is used to remove all but the carrier and 6 MHz of the upper sideband. ("8VSB" is often used as a synonym for OTA.)
Composite Video - An analog video signal (NTSC, PAL or SECAM) that includes both luminance (brightness) and chrominance (color) signals encoded together to form a single signal.
Analog TV - Analog technology has been in use for the past 50 years to transmit conventional TV signals to consumers. "Standard" television broadcasts in analog TV. Analog signals vary continuously, creating fluctuations in color and brightness.
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