US 11,856,231 B2
Systems and methods for signaling hypothetical reference decoder parameters in video coding
Sachin G. Deshpande, Vancouver, WA (US)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/613,523
Filed by Sharp Kabushiki Kaisha, Osaka (JP)
PCT Filed May 26, 2020, PCT No. PCT/JP2020/020794
§ 371(c)(1), (2) Date Nov. 23, 2021,
PCT Pub. No. WO2020/241653, PCT Pub. Date Mar. 12, 2020.
Claims priority of provisional application 62/865,733, filed on Jun. 24, 2019.
Claims priority of provisional application 62/864,398, filed on Jun. 20, 2019.
Claims priority of provisional application 62/854,921, filed on May 30, 2019.
Prior Publication US 2022/0264153 A1, Aug. 18, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/187 (2014.01); H04N 19/31 (2014.01); H04N 9/44 (2006.01); H04N 19/44 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/187 (2014.11); H04N 19/31 (2014.11); H04N 19/44 (2014.11)] 5 Claims
OG exemplary drawing
 
1. A method of decoding video data, the method comprising:
decoding a first syntax element in a sequence parameter set, wherein the first syntax element specifies a hypothetical reference decoder parameters syntax structure includes parameters for a temporal sub-layer with an identifier in a range of 0 to a value of a maximum number of temporal sub-layers minus one syntax element or a hypothetical reference decoder parameters syntax structure includes parameters for a temporal sub-layer with an identifier equal to a value of a maximum number of temporal sub-layers minus one syntax element only;
selecting a starting sub-layer for the hypothetical reference decoder parameters syntax structure according to a value of the first syntax element; and
decoding each of the parameters in the hypothetical reference decoder parameters syntax structure by using the starting sub-layer and the value of the maximum number of temporal sub-layers minus one syntax element.