Information security – Protection of hardware
Reexamination Certificate
2007-04-10
2007-04-10
Barron, Jr., Gilberto (Department: 2132)
Information security
Protection of hardware
C369S053100, C720S719000
Reexamination Certificate
active
10606788
ABSTRACT:
A recording-medium management system comprising: a reproduction part; a recording part; and a control part. The control part performs a first through fourth control. The first control is to obtain a first data line from an authentication region of a recording medium by making the reproduction part read the authentication region, the authentication region including a first data pattern of a RAM bit and a ROM bit, the first data line being corresponding to the first data pattern, the RAM bit being over-writable of data at least once by a first writing condition, and the ROM bit being not over-writable of data by the first writing condition. The second control is to make the recording part overwrite predetermined data to the RAM bit. The third control is to obtain a second data line from the recording-medium, the second data line being corresponding to a second data pattern of the over-written RAM bit and the ROM bit. The fourth control is to perform an authentication with regard to the recording medium in reference to the first and second data lines.
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Kamata Yoshiyuki
Naito Katsuyuki
Sakurai Masatoshi
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