Copyright control system
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United States of America Patent
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Oct 6, 1998
Grant Date -
N/A
app pub date -
Jul 5, 1996
filing date -
Jul 7, 1995
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A copyright control system for performing access control to copyright digital information. The copyright control system is equipped with an encryption/decryption hardware 11 which accepts encrypted copyright digital information from an option hardware 6 or an FDD unit 3 through a sub-data bus 23. The encryption/decryption hardware 11 decrypts the encrypted digital information using a decryption key obtained from a copyright control center for primary utilization of the encrypted digital information and inputted from an CPU 1.
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