Patent ID: 9324361
Filing Date: 2016-04-26
CPC Classification: G06F,G11B

Claim Text:
1. A method of processing data internal to a computing device comprising: determining, at a data storage controller, a specific portion of data to modify based on a request from a host computer to store data associated with a specific logical block address; in response to determining the specific portion is to be modified, retrieving, via the data storage controller, encrypted selected data from a disc data storage medium, the encrypted selected data including the specific portion and another portion of data that is not associated with the request, where the specific portion and the another portion are both located in a same track of the disc data storage medium; decrypting, via the data storage controller, the encrypted selected data to reveal the specific portion and the another portion; modifying, via the data storage controller, the specific portion to produce a changed portion, while not modifying the another portion; encrypting, via the data storage controller, the changed portion and the another portion to produce encrypted changed selected data; and storing the encrypted changed selected data to the disc data storage medium.