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Definition of "DigiCipher HDTV system" |
a high-definition television (HDTV) digital transmission television system proposed to the FCC by the American Television Alliance composed of General Instruments and Massachusetts Institute of Technology. The DigiCipher HDTV proposal submitted to the FCC in August of 1991 was the first system to provide an all digital television system that promised spectrum compatibility with the existing television channel allocation. The system used quadrature amplitude modulation (16-QAM) digital transmission at a 4.88 MHz symbol rate. |
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