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What is the DECODER (EIA IS-15) port on the back of the set?

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What is the DECODER (EIA IS-15) port on the back of the set?

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[color=blue]Electronic Industries Association Interim Standard 15[/color]: The Television Receiver Committee of the EIA proposed a baseband interface standard, IS-15 for improving the compatibility between TV receivers and cable TV (CATV) decoder systems. The advantage of using this standard is the ability to integrate tuning, intermediate frequency, and remote control systems for both TV and CATV applications. As a result, the RF converter can be eliminated and descrambling can be achieved in the baseband. It’s a stillborn attempt at a North American standard for controlling cable/satelite boxes, based on the successful European SCART/Peritel system. Invented by E. Lykkegaard and K. R. Jensen of Bang & Olufsen, the hope was that cable boxes and other external decoders could be controlled by the TV set itself, changing the channels as necessary for timer recordings, etc. Nothing ever supported it.

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