Patent ID: 9305590
Filing Date: 2016-04-05
CPC Classification: G06F,G11B,H04N

Claim Text:
1. A device comprising: a data storage medium adapted to store data content encrypted using an encrypted key and the encrypted key, wherein the encrypted key is encrypted using a root key; and a removable control circuit including a first key, wherein if the first key does not correspond to the root key, the removable control circuit prevents access to the data content wherein the data storage medium is further adapted to store unencrypted data content, wherein the removable control circuit is further adapted to prevent access to the unencrypted data content if the first key does not correspond to the root key, and wherein at least a portion of the data content is unencrypted data content and wherein the removable control circuit is further adapted to delete the unencrypted data content if the first key does not correspond to the root key.