发明名称 MULTICAST DOWNLOADING OF SOFTWARE AND DATA MODULES AND THEIR COMPATIBILITY REQUIREMENTS
摘要 A system for downloading different versions of software or data modules into a plurality of terminals having different compatibility interfaces includes an authoring component for generating the different module versions, a downloading source including a descriptor table which associates each module version with a list of compatibility requirements needed to download the module, and a plurality of terminals coupled to the downloading source. The downloading source transmits the descriptor table to each terminal and also continuously transmits the modules over the network. Each terminal extracts the descriptor table and, based on a match between an entry in the descriptor table and an internally stored table determines which version of a particular module should be downloaded. The system avoids the need for two-way communication between each terminal and the downloading source.
申请公布号 EP0880857(B1) 申请公布日期 2002.05.02
申请号 EP19970902864 申请日期 1997.01.13
申请人 POWERTV, INC. 发明人 MACINNIS, ALEXANDER, G.
分类号 A63F13/12;G06F9/445;H04L29/06;H04L29/08;H04N5/44;H04N7/16;H04N7/173;H04N21/235;H04N21/443;H04N21/45;H04N21/454;H04N21/6547;H04N21/81;H04N21/84 主分类号 A63F13/12
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