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

Claim 39:
40. A content memory device, comprising:
a connector of the content memory device communicatively coupleable to a playback device;
a content memory device processor communicatively coupled to the connector and configured to interact with the playback device by:
reading a unique data pattern from a region of the content memory device, the unique data pattern being a written data pattern written by a validation entity and altered by known content memory device inherent random physical manufacturing defects in the region identified by a defect map identifying known content memory device inherent random physical manufacturing defects, the defect map stored in the content memory device;
transmitting the unique data pattern and the defect map to the playback device; and
transmitting content to the playback device responsive to a validation of the content memory device performed using the transmitted unique data pattern and defect map;

wherein the content memory device inherent random physical manufacturing defects comprise content memory device physical manufacturing defects;
wherein the validation comprises a comparison of the unique data pattern to an expected data pattern, the expected data pattern computed at least in part according to the defect map and the written data pattern; and
wherein the expected data pattern is a written data pattern altered by the defect map.