Patent ID: 11868170
Assignee: WARNER BROS. ENTERTAINMENT INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A playback device, comprising:
a port for coupling a content memory device;
a processor, communicatively coupled to the port, the processor configured to:
read a unique data pattern from a region of the content memory device, the region having known content memory device inherent random physical manufacturing defects identified in a defect map, the unique data pattern being a written data pattern altered by the content memory device inherent random physical manufacturing defects in the region identified in the defect map; and
validate the content memory device based at least in part upon the unique data pattern, the written data pattern, and the defect map;

wherein the written data pattern is stored in a device memory communicatively coupled to the processor and the processor is configured to access the device memory within the playback device and retrieve the written data pattern.