Patent ID: 7995754

Claim:
A method of writing to a recordable medium, comprising: receiving a data range from a host device, wherein the data range is indicative of a portion of a memory of the recordable medium to be recorded with encrypted data; receiving a write command from the host device, the write command including at least one data block to be written to the recordable medium and a memory address indicative of a start address where the at least one data block is to be written on the recordable medium; comparing the memory address and the data range to determine whether the at least one data block falls within the data range; checking an encryption indicator in the at least one data block to determine whether the data on the at least one data block is encrypted; and if the encryption indicator indicates that the data in the at least one data block is encrypted and if the at least one data block falls within the data range, setting an encryption bit associated with the at least one data block.