US 12,267,567 B2
Watermarking multimedia fragments into two or more variants
Jacobus Panis, Cheseaux-sur-Lausanne (CH)
Assigned to NAGRAVISION S.A., Cheseaux-sur-Lausanne (CH)
Filed by Nagravision S.A., Cheseaux-sur-Lausanne (CH)
Filed on Dec. 19, 2023, as Appl. No. 18/544,544.
Application 18/544,544 is a continuation of application No. 17/629,022, granted, now 11,889,164, previously published as PCT/EP2020/071008, filed on Jul. 24, 2020.
Claims priority of application No. 19188058 (EP), filed on Jul. 24, 2019.
Prior Publication US 2024/0137624 A1, Apr. 25, 2024
Prior Publication US 2024/0236444 A9, Jul. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04H 60/32 (2008.01); H04N 21/8358 (2011.01); H04N 21/845 (2011.01); H04N 21/472 (2011.01)
CPC H04N 21/8358 (2013.01) [H04N 21/8456 (2013.01); H04N 21/47202 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of processing a multimedia fragment into two or more variants of the multimedia fragment, the method comprising:
fragmenting a multimedia content into a sequence of fragments;
watermarking a plurality of the fragments to create two or more variants of each of the plurality of the fragments, wherein the two or more variants of one fragment are watermarked using different watermarks; and
adjusting a length of the two or more variants for at least one of the fragments to a same adjusted length, wherein the adjusted length is indicative of a temporal position of the two or more variants of the at least one of the fragments compared to variants of other fragments in the sequence of fragments, wherein the temporal position is defined as a position within a limited number of possible positions that is repeated in time, and wherein the adjusted length reflects the position of a variant having the adjusted length within the limited number of possible positions.