US 12,143,639 B2
Encoder, decoder, encoding method, and decoding method
Virginie Drugeon, Darmstadt (DE); Tadamasa Toma, Osaka (JP); Takahiro Nishi, Nara (JP); Kiyofumi Abe, Osaka (JP); and Yusuke Kato, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Nov. 26, 2021, as Appl. No. 17/535,873.
Application 17/535,873 is a continuation of application No. PCT/JP2020/023906, filed on Jun. 18, 2020.
Claims priority of provisional application 62/862,952, filed on Jun. 18, 2019.
Prior Publication US 2022/0086502 A1, Mar. 17, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/463 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/463 (2014.11)] 5 Claims
OG exemplary drawing
 
1. An encoder comprising:
memory; and
circuitry coupled to the memory,
wherein in operation, the circuitry:
stores first information indicating a total number of temporal sub-layers into either a buffering period supplemental enhancement information (SEI) message or a picture timing SEI message; and
generates a bitstream including the buffering period SEI message and the picture timing SEI message,
wherein the buffering period SEI message includes a first loop structure of the total number of the temporal sub-layers indicated by the first information, and each of first loops includes an initial delay of a timing to extract data from a coded picture buffer (CPB),
wherein the picture timing SEI message includes a second loop structure of the total number of the temporal sub-layers indicated by the first information, and each of second loops includes a parameter related to the timing to extract data from the CPB,
wherein the buffering period SEI further includes second information indicating a total number of initial delays of the timing to extract data from the CPB, and
wherein a sequence parameter set includes third information having a value equal to the second information, the third information indicating a total number of schedules.