US 12,335,501 B2
HRD parameters for layers
Ye-Kui Wang, San Diego, CA (US)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Mar. 24, 2022, as Appl. No. 17/703,377.
Application 17/703,377 is a continuation of application No. PCT/US2020/049725, filed on Sep. 8, 2020.
Claims priority of provisional application 62/905,244, filed on Sep. 24, 2019.
Prior Publication US 2022/0217374 A1, Jul. 7, 2022
Int. Cl. H04N 19/44 (2014.01); H04N 19/149 (2014.01); H04N 19/154 (2014.01); H04N 19/169 (2014.01); H04N 19/172 (2014.01); H04N 19/187 (2014.01); H04N 19/30 (2014.01); H04N 19/423 (2014.01); H04N 19/46 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/44 (2014.11) [H04N 19/149 (2014.11); H04N 19/154 (2014.11); H04N 19/172 (2014.11); H04N 19/187 (2014.11); H04N 19/188 (2014.11); H04N 19/30 (2014.11); H04N 19/423 (2014.11); H04N 19/46 (2014.11); H04N 19/70 (2014.11)] 14 Claims
OG exemplary drawing
 
1. A method implemented by a decoder, the method comprising:
receiving a bitstream comprising a hypothetical reference decoder (HRD) parameters syntax structure and one or more layers of coded pictures such that all of the layers are associated with a same number of coded picture buffer (CPB) delivery schedules as specified by the HRD parameters syntax structure, wherein each of the CPB delivery schedules is described by a network abstraction layer (NAL) initial CPB removal delay (nal_initial_cpb_removal_delay) and a NAL initial CPB removal offset (nal_initial_cpb_removal_offset), and wherein each layer is associated with a buffering period (BP) CPB count minus1 (bp_cpb_cnt_minus1) plus one that specifies a number of nal_initial_cpb_removal_delay and nal_initial_cpb_removal_offset pairs for each layer, and wherein bp_cpb_cnt_minus1 is equal to a value of hrd_cpb_cnt_minus1; and
decoding a picture from one of the layers to obtain a decoded picture.