Method and an apparatus to control copying from a data providing device to a data receiving device
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United States of America Patent
Stats
-
Feb 19, 2002
Grant Date -
N/A
app pub date -
Mar 31, 1997
filing date -
Jan 8, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An MPEG board 6 issues the key data generated by the board to a DVD drive 4. The DVD drive 4 generates enciphering key data on the basis of the key data, enciphers the provided data read from a DVD 2 on the basis of the key data, and sends it to the MPEG board 6. The MPEG board 6 deciphers the enciphered provided data using the key data generated by the board.
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