Patent ID: 9299356
Filing Date: 2016-03-29
CPC Classification: G10L

Claim Text:
1. A watermark decoder for providing binary message data in dependence on a watermarked signal, the watermark decoder comprising: a time-frequency-domain representation provider that provides a frequency-domain representation of the watermarked signal for a plurality of time blocks; a memory unit that stores the frequency-domain representation of the watermarked signal for a plurality of time blocks; a synchronization determiner that identifies an alignment time block based on the frequency-domain representation of the watermarked signal of a plurality of time blocks; a watermark extractor that provides binary message data based on stored frequency-domain representations of the watermarked signal of time blocks temporally preceding the identified alignment time block considering a distance to the identified alignment time block; and a redundancy decoder that provides binary message data of an incomplete message of the watermarked signal temporally preceding a message comprising the identified alignment time block using redundant data of the incomplete message.