Methods and systems for password protection of defined spaces within a memory card

A memory device, comprising:

• a memory for storing data;
• and
• a controller operatively coupled to the memory via a memory interface, the controller configured to:
• receive a data block from a host device, the data block comprising at least (a) a user-defined current password, (b) a user-defined new password, (c) a password length of the user-defined current password, (d) a password length of the user-defined new password, and (e) a user-defined address range field including a start address and an end address of a defined space in the memory device;
• match the password length of the user-defined current password and a current password length of a current password for the defined space already stored in the memory;
• compare the user-defined current password and the current password of the defined space;
• and
• reset the current password of the defined space with the user-defined new password based on a result of the match and a result of the comparing.

A memory card system, comprising:

• a memory card comprising a memory for storing data;
• and
• a control means operatively coupled to the memory by way of a memory interface, wherein the control means comprises means for:
• receiving a data block via a card interface, wherein the data block comprises at least (a) a user-defined current password, (b) a user-defined new password, (c) a password length of the user-defined current password, (d) a password length of the user-defined new password, and (e) a user-defined address range field including a start address and an end address of a defined space in the memory,
• matching the password length of the user-defined current password and a current password length of a current password for the defined space already stored in the memory,
• comparing the user-defined current password and the current password of the defined space, and
• replacing the current password of the defined space with the user-defined new password based on a result of the match and a result of the comparing.