Patent ID: 9558526
Date: 2017-01-31
CPC Classifications: G06F,G06T,G10L,H04H,H04L,H04N

Claim:
1. A method for detecting a change in arrangement of sections of a content, comprising: receiving a multimedia content; extracting at least two watermark messages from the multimedia content; determining a separation between a first one of the at least two extracted watermark messages and a second one of the at least two extracted watermark messages within the multimedia content; using the payloads of the at least two extracted watermark messages to retrieve metadata associated with the at least two watermark messages; and processing the retrieved metadata in conjunction with the determined separation to detect a change in arrangement of the multimedia content sections, wherein each watermark message enables recovery of at least a first field and a second field, the first field including an identical value for each watermark embedded in a plurality of segments of the multimedia content, and the second field including different values in different segments of the multimedia content and wherein processing the metadata in conjunction with the determined separation includes one or both of: