Information processing apparatus and data erasure method for use in the same

• US 20040268073A1
• Filed: 04/07/2004
• Published: 12/30/2004
• Est. Priority Date: 06/26/2003
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Morisawa, Toshikazu
• Application Number:
  US10/819,204
• Publication Number:
  US 20040268073A1
• Time in Patent Office: Days
• US Class Current: 711/164
• CPC Class Codes: G06F 21/80 in storage media based on magnetic or optical technology, e.g. disks with sectors preventing unauthorised reproduction or copying of disc-type recordable media G11B20/00
• CPC Class Codes: G06F 2221/2143 Clearing memory, e.g. to prevent the data from being stolen

Abstract

An information processing apparatus includes a storage device that stores an operating system and user data. The information processing apparatus further includes a memory configured to store a plurality of functions including an erasure function for erasing storage content in the storage device, and an erasure function activation unit configured to activate the erasure function in a state in which the operating system is not executed.

Claims

1. An information processing apparatus comprising:

a storage device configured to store an operating system and user data;

a memory configured to store a plurality of functions including an erasure function for erasing storage content in the storage device; and

an erasure function activation unit configured to activate the erasure function in a state in which the operating system is not executed.

2. The information processing apparatus according to claim 1, wherein the erasure function activation unit includes:

means for determining whether predetermined key data is input from an input device of the information processing apparatus at a time of power-on of the information processing apparatus;

means for activating the operating system when the predetermined key data is not input;

means for displaying a menu screen for selecting a function that is to be executed, when the predetermined key data is input; and

means for activating the erasure function when the erasure function is selected on the menu screen.

3. The information processing apparatus according to claim 1, wherein the storage device includes a reserved area that stores a recovery image for restoring the content of the operating system to the original state, and

the information processing apparatus further comprises means for setting the erasure function between a first mode for erasing all storage areas of the storage device including the reserved area, and a second mode for erasing storage areas other than the reserved area.

4. The information processing apparatus according to claim 1, wherein the storage device includes a first disk storage device that is built in the information processing apparatus, and

the information processing apparatus further comprises means for setting, when a second disk storage device is mounted in the information processing apparatus, the erasure function between a first mode for erasing storage content of the first disk storage device, a second mode for erasing storage content of the second disk storage device, and a third mode for erasing storage contents of the first disk storage device and the second disk storage device.

5. The information processing apparatus according to claim 1, further comprising:

a memory device configured to store verification data;

an input device;

means for comparing verification data that is input from the input device and the verification data that is stored in the memory device; and

means for prohibiting activation of the erasure function when the input verification data and the verification data that is stored in the memory device are non-coincident.

6. The information processing apparatus according to claim 1, further comprising:

a memory device configured to stores verification data;

an input device; and

means for comparing verification data that is input from the input device and the verification data that is stored in the memory device,

wherein the erasure function activation unit includes;

means for displaying, when the input verification data and the verification data that is stored in the memory device are coincident, the plurality of functions including the erasure function on a menu screen for selecting a function that is to be executed; and

means for prohibiting display of the erasure function on the menu screen, when the input verification data and the verification data that is stored in the memory device are non-coincident.

7. The information processing apparatus according to claim 1, further comprising:

a memory device configured to store verification data;

an input device;

means for determining whether the verification data is stored in the memory device at a time of power-on of the information processing apparatus;

means for executing, when the verification data is stored in the memory device, a verification process for determining whether use of the information processing apparatus by a user is permitted, on the basis of verification data that is input from the input device and the verification data that is stored in the memory device;

means for enabling, when the use of the information processing apparatus is permitted, the erasure function activation unit to activate the erasure function; and

means for deleting the verification data that is stored in the memory device, when the storage content of the storage device is erased by the activated erasure function.

8. An information processing apparatus comprising:

a storage device configured to store an operating system and user data;

an erasure program storage device configured to store an erasure program that erases storage content in the storage device;

an erasure program activation unit configured to activate the erasure program in a state in which the operating system is not executed;

a memory device configured to stores verification data;

an input device;

means for determining whether the verification data is stored in the memory device at a time of power-on of the information processing apparatus;

means for executing, when the verification data is stored in the memory device, a verification process for determining whether use of the information processing apparatus by a user is permitted, on the basis of verification data that is input from the input device and the verification data that is stored in the memory device;

means for enabling, when the use of the information processing apparatus is permitted, the erasure program activation unit to activate the erasure program; and

means for deleting the verification data that is stored in the memory device, when the storage content of the storage device is erased by the activated erasure program.

9. A method of erasing storage content of a storage device that is provided in an information processing apparatus, the storage device storing an operating system and user data, the method comprising:

activating an erasure function that stored in a memory that is provided in the information processing apparatus, in a state in which the operating system is not executed; and

erasing the storage content of the storage device by the activated erasure function.

10. The method according to claim 9, wherein the activating of the erasure function includes:

determining whether predetermined key data is input from an input device of the information processing apparatus at a time of power-on of the information processing apparatus;

activating the operating system when the predetermined key data is not input;

displaying a menu screen for selecting a function that is to be executed, when the predetermined key data is input; and

activating the erasure function when the erasure function is selected on the menu screen.

11. The method according to claim 9, wherein the storage device includes a reserved area that stores a recovery image for restoring the content of the operating system to the original state, and

the method further comprises setting the erasure function between a first mode for erasing all storage areas of the storage device including the reserved area, and a second mode for erasing storage areas other than the reserved area.

12. The method according to claim 9, wherein the storage device includes a first disk storage device that is built in the information processing apparatus, and

the method further comprises setting, when a second disk storage device is mounted in the information processing apparatus, the erasure function between a first mode for erasing storage content of the first disk storage device, a second mode for erasing storage content of the second disk storage device, and a third mode for erasing storage contents of the first disk storage device and the second disk storage device.

13. The method according to claim 9, further comprising:

comparing verification data that is input from an input device of the information processing apparatus and verification data that is stored in the information processing apparatus; and

prohibiting activation of the erasure function when the input verification data and the verification data that is stored in the information processing apparatus device are non-coincident.

14. The method according to claim 9, further comprising:

comparing verification data that is input from an input device of the information processing apparatus and verification data that is stored in the information processing apparatus,

wherein the activating of the erasure function includes;

displaying, when the input verification data and the verification data that is stored in the information processing apparatus are coincident, a plurality of functions including the erasure function on a menu screen for selecting a function that is to be executed; and

prohibiting display of the erasure function on the menu screen, when the input verification data and the verification data-that is stored in the information processing apparatus are non-coincident.

15. The method according to claim 9, further comprising:

determining whether verification data is stored in the information processing apparatus at a time of power-on of the information processing apparatus;

executing, when the verification data is stored in the information processing apparatus, a verification process for determining whether use of the information processing apparatus by a user is permitted, on the basis of verification data that is input from an input device of the information processing apparatus and the verification data that is stored in the information processing apparatus;

enabling, when the use of the information processing apparatus is permitted, said activating of the erasure function to activate the erasure function; and

deleting the verification data that is stored in the information processing apparatus, when the storage content of the storage device is erased by the activated erasure function.