US 12,267,511 B2
Compact network abstraction layer (NAL) unit header
Martin Pettersson, Vallentuna (SE); Rickard Sjöberg, Stockholm (SE); and Mitra Damghanian, Upplands-Bro (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/620,000
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed May 8, 2020, PCT No. PCT/SE2020/050476
§ 371(c)(1), (2) Date Dec. 16, 2021,
PCT Pub. No. WO2020/256613, PCT Pub. Date Dec. 24, 2020.
Claims priority of provisional application 62/863,363, filed on Jun. 19, 2019.
Prior Publication US 2022/0303558 A1, Sep. 22, 2022
Int. Cl. H04N 19/169 (2014.01); H04N 19/184 (2014.01); H04N 19/30 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/188 (2014.11) [H04N 19/184 (2014.11); H04N 19/1887 (2014.11); H04N 19/30 (2014.11); H04N 19/70 (2014.11)] 17 Claims
OG exemplary drawing
 
1. A method performed by a video decoder, the method comprising:
obtaining a network abstraction layer (NAL) unit having a particular NAL unit type, the obtained NAL unit comprising a NAL unit header, the NAL unit header of the obtained NAL unit comprising at least a first part comprising N bits;
obtaining NAL unit header (NUH) extension information that indicates whether or not the NAL unit header further comprises a second part that comprises M bits; and
determining a NAL unit type value specifying the particular NAL unit type of the obtained NAL unit based on a first codeword included in the first part of the NAL unit header, a second codeword included in the second part of the NAL unit header, and a third codeword included in the first part of the NAL unit header.