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据“日经ュしトロニタス”83年2月第311号报道:美国的闭路电视业界正在为节目被非法偷看而烦恼。为防止这种违法现象继续发生,Time/Life公司的Home BoxOffice(HBO)正在实施卫星线路上信号的加密计划。HBO在建设中的闭路电视台设置置乱器供卫星上行线路使用。去乱器设在CATV业界卫星下行线路接收机和电缆线路前置末端(head end)之间。这种置乱器的名称叫Video～Cypher,由M/A—Com Link-abit公司设计,采用美国商务部标准局的DES加密算法。置乱器上使用Intel和Advanced
According to “The Nikkei Trombonit” Report No. 311 of February 83: The U.S. CCTV industry is experiencing worries about the program being illegally peeped. To prevent such violations continue, Time / Life’s Home BoxOffice (HBO) is implementing encryption schemes for signals on satellite lines. HBO sets up a scrambler on the building’s CCTV for satellite uplink use. The scrambler is located between the CATV satellite satellite downlink receiver and the cable head-end. The scrambler called Video ~ Cypher, designed by M / A-Com Link-abit, DES encryption algorithm US Bureau of Commerce Standards Bureau. Use Intel and Advanced on the shuffle