| 摘要 |
A movie playing system which utilizes a system for the playing of movies (sound and video). The movie is encrypted and stored on a computer in an ordered sequence of segments. The computer decrypts each segment in series and plays that decrypted segment on the movie playing system. When the segment is nearly, or fully, complete, the computer decrypts the next segment and deletes the prior decrypted segment. The newly decrypted segment is then played and the process continues until the entire movie has been played. Security is provided through the use of a physical identifying key which the computer uses in the decrypting process and the system monitors for recording mechanisms.
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