OTA - (over the air) - There are about 1500 OTA (terrestrial) TV stations in the U.S.
Encryption - The process of coding signals so that a specific code or key is required by the viewer to recover the data so encrypted. Without this key, the data is meaningless. Encryption is used to provide conditional access for private television services.
SECAM - (Sequential Color And Memory standard) - This alternative to NTSC has 625 lines interlaced, 50 fields per second. It is used in the former USSR, France, and parts of Eastern Europe, the Middle East, and Africa.
Decoder - See "codec." A device or program that translates encoded data into its original format (i.e., it decodes the data.)
MTS - (Multi-channel Television Sound) - This refers to an analog NTSC TV equipped with stereo and SAP (separate audio program) features.
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.
Fps - Frames per Second. To give the illusion of motion, television actually transmits a series of snapshot pictures referred to as frames. Increasing the frame rate improves motion smoothness and may reduce flicker in some displays. In Canada both analog and digital television transmits 30 Fps.
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