LOGICAL-TO-PHYSICAL ADDRESS TRANSLATION FOR A REMOVABLE DATA STORAGE DEVICE

摘要

A method for making memory more reliable involves accessing data stored in a removable storage device by translating a logical memory address provided by a host digital device to a physical memory address in the device. A logical memory address is received from the host digital device. The logical memory address corresponds to a location of data stored on the removable storage device. A physical memory address corresponding to the local address is determined by accessing a lookup table corresponding to the logical zone.

主权项

1. A removable storage device comprising:
memory configured to store encrypted data at physical memory addresses; a processor coupled with the memory, the processor configured to:
receive logical addresses from a host device;determine the physical memory addresses corresponding to physical memory addresses via a lookup table; anddecrypt the encrypted data using a decryption key corresponding to the encrypted data stored at the physical memory addresses, wherein different decryption keys correspond to encrypted data stored at different physical memory addresses in the memory; and an interface coupled with the processor, the interface configured to communicate the decrypted data to the host device.