US 12,250,410 B2
Encoder, decoder and corresponding methods
Biao Wang, Shenzhen (CN); Semih Esenlik, Munich (DE); Elena Alexandrovna Alshina, Munich (DE); Anand Meher Kotra, Munich (DE); and Han Gao, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Sep. 23, 2022, as Appl. No. 17/951,499.
Application 17/951,499 is a continuation of application No. PCT/CN2021/082540, filed on Mar. 24, 2021.
Claims priority of application No. PCT/EP2020/058208 (WO), filed on Mar. 24, 2020.
Prior Publication US 2023/0068266 A1, Mar. 2, 2023
Int. Cl. H04N 19/70 (2014.01); H04N 19/172 (2014.01); H04N 19/187 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/172 (2014.11); H04N 19/187 (2014.11)] 15 Claims
OG exemplary drawing
 
1. A method of decoding a video or picture bitstream implemented by a decoding device, the method comprising:
obtaining a first syntax element used to determine a maximum number of temporal sublayers that is allowed to be present in each coded layer video sequence (CLVS) referring to a current sequence parameter set (SPS) comprising syntax elements that apply to a video sequence, wherein a value of the first syntax element is in a range of 0 to a first value, wherein the first value is a value of a second syntax element used to determine the maximum number of the temporal sublayers that is allowed to be present in a layer in each coded video sequence (CVS) referring to a video parameter set (VPS) when the second syntax element is referred to by the SPS; and
decoding the bitstream based on the value of the first syntax element, wherein the first value is a preset value when the second syntax element is not referred to by the SPS.