发明名称 ELECTRONIC BOOK SELECTION AND DELIVERY SYSTEM HAVING ENCRYPTION AND SECURITY FEATURES
摘要 The invention, an electronic book selection and delivery system, distributes text to subscribers. The system includes a subsystem for placing text in a video signal format and a subsystem for receiving and selecting video format text. The system contains an operations center, a video distribution system, a home subsystem, and a billing and collection system. The operation center and/or video distribution points perform the functions of manipulation of text data, security and coding of text, cataloging of books, message center, and uplink functions. The home subsystem connects to a video distribution system, generates menus and stores text, and transacts through communicating mechanisms. A portable book-shaped viewing device is used for viewing the text. The billing system performs the transaction, management, authorization, collection and payments utilizing the telephone system.
申请公布号 CA2458317(C) 申请公布日期 2010.04.13
申请号 CA19942458317 申请日期 1994.12.02
申请人 DISCOVERY COMMUNICATIONS, INC. 发明人 HENDRICKS, JOHN S.
分类号 G06F13/00;G06F3/00;G06F3/06;G06F3/14;G06F15/00;G06F17/30;G06F19/00;G06Q20/00;G06Q30/00;G06Q50/00;G09F19/00;H04L9/28;H04L9/32;H04L12/16;H04M3/493;H04M11/06;H04M11/08;H04N5/00;H04N5/445;H04N7/025;H04N7/03;H04N7/035;H04N7/08;H04N7/088;H04N7/10;H04N7/16;H04N7/173;H04N7/24;H04N7/26;H04N19/89;H04N21/235;H04N21/2543;H04N21/41;H04N21/426;H04N21/435;H04N21/443;H04N21/472;H04N21/61;H04N21/6334;H04N21/643;H04N21/658;H04N21/81 主分类号 G06F13/00
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