Memory device having secure non-volatile locking functionality

Details Memory device having secure non-volatile locking functionality Memory device having secure non-volatile locking functionality

2011-06-14

2011-06-14

Shah, Sanjiv (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S164000, C713S193000

Reexamination Certificate

active

07962713

ABSTRACT:
A device and method is provided for maintaining, upon unlocking of a memory, the lock status of the memory prior to the memory being unlocked and recreating the lock status when power is turned on again. An information storage device, such as a memory card, performs unlocking of a memory in response to a command input from an information processing apparatus and stores lock status data prior to the memory being unlocked in a non-volatile memory (NVM). When the information storage device is turned off and then on, the information storage device recreates a lock status of the memory on the basis of the lock status data stored in the storage means and performs memory access control based on the recreated lock status.

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