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

Claim 30:
31. A method of providing data for validating a content memory device storing content, comprising:
reading a unique data pattern from a region of the content memory device, the unique data pattern being a written data pattern altered by known content memory device inherent random physical manufacturing defects in the region to which it is written by a validation entity, the known content memory device inherent random physical manufacturing defects in the region being identified in a defect map stored in the content memory device;
transmitting the unique data pattern and the defect map to a playback device; and
transmitting the content to the playback device responsive to a content memory device validation performed using the transmitted unique data pattern and defect map;
wherein the inherent random physical manufacturing defects comprise content memory device physical manufacturing defects;
wherein the content memory device validation includes 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 computed by altering a known data pattern using the defect map.