发明名称 INTERACTIVE TELEVISION SECURITY THROUGH TRANSACTION TIME STAMPING
摘要 A system for providing security on an interactive television system. Two sets of interactive data, with time stamps, are separately sent to a remote location. At the remote location, the time stamps are checked against a remote clock, a time difference being noted for both sets of data. The two time differences are compared to determine if one set of data has been delayed as compared to the other. Non-delayed data can be used to update a game score for an interactive game. After the game is completed, the remote clock is compared to a central clock. The difference between the two clocks are compared to the time difference for non-delayed data to determine whether the entire aggregate of interactive data was delayed.
申请公布号 EP0746941(A4) 申请公布日期 1997.03.12
申请号 EP19950903134 申请日期 1994.11.16
申请人 ZING SYSTEMS, L.P. 发明人 LAPPINGTON, JOHN, P.;MARSHALL, SUSAN, K.;YAMAMOTO, WAYNE, Y.;WILSON, CAMERON, A.;BERKOBIN, ERIC, C.;SIMONS, RICHARD, S.
分类号 A63F13/12;G09B7/06;H04H20/31;H04H20/38;H04H60/14;H04H60/33;H04N7/088;H04N7/14;H04N7/16;H04N7/173;H04N21/235;H04N21/41;H04N21/435;H04N21/4363;H04N21/4722;H04N21/475;H04N21/81;H04N21/854;H04N21/8545 主分类号 A63F13/12
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