Non-volatile memory device, control method for information processing device, and information processing device
AssigneeKabushiki Kaisha Toshiba
InventorDaisuke HASHIMOTO
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Abstract
A storage device for a host device includes a non-volatile semiconductor memory and a control section configured to execute a delete process in response to a command from the host device to delete data stored at locations in the non-volatile semiconductor memory corresponding to a selected logical address included in the command. The delete process includes determining a selected mapping and at least one prior mapping of the selected logical address to physical addresses of the non-volatile semiconductor memory, and erasing or overwriting the data stored at the physical addresses.
Claims20
A storage device for a host device, comprising:
- a non-volatile semiconductor memory;
- and
- a control section configured to execute a delete process in response to a command from the host device to delete data stored at locations in the non-volatile semiconductor memory corresponding to a selected logical address included in the command, the delete process including
- determining a selected mapping and at least one prior mapping of the selected logical address to physical addresses of the non-volatile semiconductor memory, and
- erasing or overwriting the data stored at the physical addresses.
A method of deleting data in a storage device for a host device having a non-volatile semiconductor memory and a control section, in response to a command from the host device to delete data stored at locations in the non-volatile semiconductor memory corresponding to a selected logical address included in the command, the method comprising:
- determining a selected mapping and at least one prior mapping of the selected logical address to physical addresses of the non-volatile semiconductor memory;
- and
- erasing or overwriting the data stored at the physical addresses.
Dependencies are inferred from the claim text.