Patent ID: 9514505
Filing Date: 2016-12-06
CPC Classification: G06T,G10L,H04N

Claim Text:
1. A method of detecting a watermark embedded in a content stream, the watermark having a watermark pattern and a payload encoded in the watermark pattern, a payload encoded in the watermark pattern in a first segment of the content stream being different from a payload encoded in the watermark pattern in a second segment of the content stream, the payload in the second segment of the content stream having a predetermined relationship with the payload in the first segment of the content stream, the method comprising: selecting a point in the content stream as an end of the first segment and a beginning of the second segment, sampling the content stream to obtain a first set of samples that is before the selected point and a second set of samples that is after the selected point, and detecting the watermark on a combination of the first set and a transformation of the second set, where the transformation exploits the relationship that exists between the different payloads in the first and second segments.