US 12,114,017 B2
Media bitstream having backwards compatibility
Martin Pettersson, Vallentuna (SE); Rickard Sjöberg, Stockholm (SE); and Mitra Damghanian, Upplands-Bro (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Feb. 23, 2023, as Appl. No. 18/113,147.
Application 18/113,147 is a continuation of application No. 17/279,333, granted, now 11,595,695, previously published as PCT/EP2019/075713, filed on Sep. 24, 2019.
Claims priority of provisional application 62/736,002, filed on Sep. 25, 2018.
Prior Publication US 2023/0199225 A1, Jun. 22, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/70 (2014.01); H04N 19/463 (2014.01); H04N 19/597 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/463 (2014.11); H04N 19/597 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of generating a backwards compatible bitstream, the method comprising:
including in a container, E, of the bitstream a first box, A, having a first version of a feature defined by a first version of a media bitstream syntax specification; and
including in the container, E, of the bitstream a second box, B, having a second version of the feature defined by an updated version of the media bitstream syntax specification, wherein
the media bitstream syntax specification is a first version of ISO/IEC 14496-12,
the updated media bitstream syntax specification is an updated version of ISO/IEC 14496-12, and
the container, E, contains information indicating that i) the second version of the feature is an update to the first version of the feature or ii) the second version of the feature is an extension of the first version of the feature.