US 12,278,968 B2
Providing segment presence information
Martin Pettersson, Vallentuna (SE); Rickard Sjöberg, Stockholm (SE); and Mitra Damghanian, Upplands-Bro (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/762,011
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 19, 2020, PCT No. PCT/SE2020/050800
§ 371(c)(1), (2) Date Mar. 18, 2022,
PCT Pub. No. WO2021/061035, PCT Pub. Date Apr. 1, 2021.
Claims priority of provisional application 62/904,093, filed on Sep. 23, 2019.
Prior Publication US 2022/0368922 A1, Nov. 17, 2022
Int. Cl. H04N 19/14 (2014.01); H04N 19/169 (2014.01); H04N 19/70 (2014.01); H04N 19/89 (2014.01)
CPC H04N 19/14 (2014.11) [H04N 19/188 (2014.11); H04N 19/70 (2014.11); H04N 19/89 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A method performed by a decoder, the method comprising:
receiving a bitstream, wherein the bitstream comprises a first part; and
decoding, from the first part of the bitstream, Network Abstraction Layer (NAL) unit presence information from general constraint information syntax elements in one or more parameter sets, the one or more parameter sets comprising a first parameter set, the first parameter set being a decoder parameter set (DPS), a video parameter set (VPS), an sequence parameter set (SPS), or a picture parameter set (PPS), wherein
the NAL unit presence information indicates i) that at least NAL units of a first NAL unit type shall not be present in at least a portion of the bitstream or ii) that at least NAL units of a first NAL unit type may be present in at least the portion of the bitstream, and
the NAL units of the first NAL unit type are video coding layer (VCL) NAL units or comprise one of adaptation parameter set (APS) NAL units or access unit delimiter (AUD) NAL units.