Information recording/reproducing system
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United States of America Patent
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Feb 14, 2006
Grant Date -
N/A
app pub date -
Feb 7, 2000
filing date -
Feb 8, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An information recording medium 1 is provided with: a user data recording part 3 which records user data; a random-patter-information recording part 4 which records random pattern information from a random physical phenomenon; and an authentication data recording part 5 which records, as authentication data, medium identification information created on the basis of the random pattern information detected from the random-pattern-information recording part 4 and a digital signature for each manufacturer with respect to the medium identification information.
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