US 12,348,742 B2
Encoder, a decoder and corresponding methods of signaling and semantics in parameter sets
Biao Wang, Shenzhen (CN); Semih Esenlik, Munich (DE); Anand Meher Kotra, Munich (DE); Elena Alexandrovna Alshina, Munich (DE); and Han Gao, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Feb. 13, 2024, as Appl. No. 18/440,003.
Application 18/440,003 is a continuation of application No. 18/066,863, filed on Dec. 15, 2022, granted, now 11,943,459.
Application 18/066,863 is a continuation of application No. 17/681,003, filed on Feb. 25, 2022, granted, now 11,533,497, issued on Dec. 20, 2022.
Application 17/681,003 is a continuation of application No. PCT/CN2021/078313, filed on Feb. 27, 2021.
Prior Publication US 2024/0283956 A1, Aug. 22, 2024
Int. Cl. H04N 19/31 (2014.01); H04N 19/136 (2014.01); H04N 19/187 (2014.01); H04N 19/70 (2014.01); H04N 19/119 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/31 (2014.11) [H04N 19/136 (2014.11); H04N 19/187 (2014.11); H04N 19/70 (2014.11); H04N 19/119 (2014.11); H04N 19/176 (2014.11)] 19 Claims
OG exemplary drawing
 
1. A method of decoding a video bitstream implemented by a decoding device, the method comprising:
obtaining a value of a first syntax element from a sequence parameter set (SPS), wherein the value of the first syntax element is used to specify whether a decoded picture buffer (DPB) parameters syntax structure is present in the SPS, wherein the SPS is coded in the video bitstream and contains syntax elements that apply to a video sequence;
obtaining a value of a third syntax element from the SPS, wherein the value of the third syntax element is used to determine a maximum number of temporal sublayers that are present in the video sequence; and
determining whether the maximum number of the temporal sublayers in the video bitstream is greater than 1 based on the value of the third syntax element, when determining that the value of the first syntax element specifies that the DPB parameters syntax structure is present in the SPS.