Data processing apparatus including data erasure in response...

Details Data processing apparatus including data erasure in response... Data processing apparatus including data erasure in response...

2005-09-22

2010-06-01

Henning, Matthew T (Department: 2431)

Information security

Prevention of unauthorized use of data including prevention...

C726S036000, C700S082000, C320S167000

Reexamination Certificate

active

07730541

ABSTRACT:
A data processing apparatus secures data from third parties in event of power loss by utilizing a backup power supply to provide power while data is erased from memory. The data is stored in a nonvolatile memory. A first voltage supply unit supplies voltage to the memory, and a second voltage unit supplies voltage to the memory when the first voltage supply unit is incapable of supplying voltage to the memory. When the first voltage supply unit becomes incapable of supplying voltage to the memory, the memory is controlled to erase the data stored therein using a selected one of a plurality of erasing processes depending on the status of processing of the data.

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