US 11,997,271 B2
Encoder, decoder, encoding method, decoding method, and recording medium
Tadamasa Toma, Osaka (JP); Takahiro Nishi, Nara (JP); Kiyofumi Abe, Osaka (JP); Ryuichi Kanoh, Osaka (JP); Chong Soon Lim, Singapore (SG); Sughosh Pavan Shashidhar, Singapore (SG); Ru Ling Liao, Singapore (SG); Hai Wei Sun, Singapore (SG); Han Boon Teo, Singapore (SG); and Jing Ya Li, Singapore (SG)
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. 15, 2022, as Appl. No. 17/987,633.
Application 17/987,633 is a continuation of application No. 17/306,483, filed on May 3, 2021, granted, now 11,533,482.
Application 17/306,483 is a continuation of application No. 17/087,128, filed on Nov. 2, 2020, granted, now 11,044,476, issued on Jun. 22, 2021.
Application 17/087,128 is a continuation of application No. PCT/JP2019/018650, filed on May 9, 2019.
Claims priority of provisional application 62/674,812, filed on May 22, 2018.
Claims priority of application No. 2019-028523 (JP), filed on Feb. 20, 2019.
Prior Publication US 2023/0074281 A1, Mar. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/119 (2014.01); H04N 19/157 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/119 (2014.11) [H04N 19/157 (2014.11); H04N 19/176 (2014.11)] 3 Claims
OG exemplary drawing
 
1. An encoder that encodes a picture, the encoder comprising:
circuitry; and
memory, wherein using the memory, the circuitry:
partitions the picture into a plurality of blocks, using a set of block partition modes obtained by combining one or more block partition modes each of which defines a partition type, the picture being read from the memory; and
encodes the plurality of blocks,
the set of block partition modes includes a first block partition mode that defines a partition direction and a total number of partitions for partitioning a first block, and a second block partition mode that defines a partition direction and a total number of partitions for partitioning a second block which is one of blocks obtained after the first block is partitioned,
in a case where the total number of partitions of the first block partition mode is three, the second block is a center block among the blocks obtained after the first block is partitioned, and the partition direction of the second block partition mode is same as the partition direction of the first block partition mode, the second block partition mode includes a block partition mode indicating that the total number of partitions is three, and
a parameter for identifying the second block partition mode includes a first flag indicating whether a block is to be partitioned horizontally or vertically, and does not include a second flag indicating a total number of partitions into which the block is to be partitioned.