公开(公告)号：AU2020298425A2

公开(公告)日：2022-01-06

申请号：AU2020298425

申请日：2020-06-15

Applicant: PANASONIC IP CORP AMERICA

Inventor： TOMA TADAMASA ,  NISHI TAKAHIRO ,  ABE KIYOFUMI ,  KATO YUSUKE

IPC: H04N19/577

Abstract: A coding device (100) is provided with a circuit and a memory connected to the circuit. The circuit in operation: derives, as a first parameter, a sum of a plurality of horizontal gradient sum absolute values respectively derived with respect to a plurality of relative pixel positions; derives, as a second parameter, a sum of a plurality of vertical gradient sum absolute values respectively derived with respect to the plurality of relative pixel positions; derives, as a third parameter, a sum of a plurality of horizontally corresponding pixel difference values respectively derived with respect to the plurality of relative pixel positions; derives, as a fourth parameter, a sum of a plurality of vertically corresponding pixel difference values respectively derived with respect to the plurality of relative pixel positions; derives, as a fifth parameter, a sum of a plurality of vertically corresponding horizontal gradient sums respectively derived with respect to the plurality of relative pixel positions; and, using the first parameter, the second parameter, the third parameter, the fourth parameter, and the fifth parameter, generates a prediction image for use in coding of a current block.

公开(公告)号：AU2020298425A1

公开(公告)日：2021-12-23

申请号：AU2020298425

申请日：2020-06-15

Applicant: PANASONIC IP CORP AMERICA

Inventor： TOMA TADAMASA ,  NISHI TAKAHIRO ,  ABE KIYOFUMI ,  KATO YUSUKE

IPC: H04N19/577

Abstract: A coding device (100) is provided with a circuit and a memory connected to the circuit. The circuit in operation: derives, as a first parameter, a sum of a plurality of horizontal gradient sum absolute values respectively derived with respect to a plurality of relative pixel positions; derives, as a second parameter, a sum of a plurality of vertical gradient sum absolute values respectively derived with respect to the plurality of relative pixel positions; derives, as a third parameter, a sum of a plurality of horizontally corresponding pixel difference values respectively derived with respect to the plurality of relative pixel positions; derives, as a fourth parameter, a sum of a plurality of vertically corresponding pixel difference values respectively derived with respect to the plurality of relative pixel positions; derives, as a fifth parameter, a sum of a plurality of vertically corresponding horizontal gradient sums respectively derived with respect to the plurality of relative pixel positions; and, using the first parameter, the second parameter, the third parameter, the fourth parameter, and the fifth parameter, generates a prediction image for use in coding of a current block.

公开(公告)号：CA3119646A1

公开(公告)日：2020-07-09

申请号：CA3119646

申请日：2019-12-23

Applicant: PANASONIC IP CORP AMERICA

Inventor： LIM CHONG SOON ,  SUN HAI WEI ,  TEO HAN BOON ,  LI JING YA ,  KUO CHE-WEI ,  ABE KIYOFUMI ,  TOMA TADAMASA ,  NICHI TAKAHIRO ,  KATO YUSUKE

IPC: H04N19/117

Abstract: A coding device (100) that codes coding target blocks of an image is provided with a processor (a1) and memory (a2) that is connected to the processor (a1). The processor (a1) generates, for a motion, a first predicted image having an integer pixel unit on the basis of a motion vector, and uses an interpolation filter to interpolate the values of the minimum pixel positions between a plurality of integer pixels included in the first predicted image, thereby generating a second predicted image, and, on the basis of the second predicted image, codes coding target blocks. Usage of the interpolation filter involves switching between a first interpolation filter and a second interpolation filter in which the number of taps differs from the first interpolation filter.

公开(公告)号：CA3105938A1

公开(公告)日：2020-01-23

申请号：CA3105938

申请日：2019-07-05

Applicant: PANASONIC IP CORP AMERICA

Inventor： LI JING YA ,  LIM CHONG SOON ,  SHASHIDHAR SUGHOSH PAVAN ,  LIAO RU LING ,  SUN HAI WEI ,  TEO HAN BOON ,  ABE KIYOFUMI ,  TOMA TADAMASA ,  NISHI TAKAHIRO

IPC: H04N19/52

Abstract: A coding device (100) is provided with a circuit (160) and a memory (162) connected to the circuit (160). The circuit (160): selects, from a plurality of tables which are used, during an operation, to correct a reference motion vector into a predetermined direction using a correction value designated by an index, and which have correction values with respectively different intervals between indexes, a first table used for a partition to be coded of an image in a moving image; writes a parameter indicating a first index to be selected from among indexes included in the first table; and codes the partition using the reference motion vector corrected by means of a correction value designated by the first index.

公开(公告)号：CA3157007A1

公开(公告)日：2019-11-28

申请号：CA3157007

申请日：2019-05-09

Applicant: PANASONIC IP CORP AMERICA

Inventor： TOMA TADAMASA ,  NISHI TAKAHIRO ,  ABE KIYOFUMI ,  KANOH RYUICHI ,  LIM CHONG SOON ,  SHASHIDHAR SUGHOSH PAVAN ,  LIAO RU LING ,  SUN HAI WEI ,  TEO HAN BOON ,  LI JING YA

Abstract: An encoder partitions into blocks using a set of block partition modes obtained by combining one or more block partition modes defining a partition type. The set of block partition modes includes a first partition mode defining the partition direction and number of partitions for partitioning a first block, and a second block partition mode defining the partition direction and number of partitions for partitioning a second block which is one of blocks obtained after the first block is partitioned. When the number of partitions of the first block partition mode is three, the second block is a center block among the blocks obtained after partitioning the first block, 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 only a block partition mode indicating that the number of partitions is three.

公开(公告)号：CA3093204A1

公开(公告)日：2019-09-12

申请号：CA3093204

申请日：2019-03-04

Applicant: PANASONIC IP CORP AMERICA

Inventor： SHASHIDHAR SUGHOSH PAVAN ,  SUN HAI WEI ,  LIM CHONG SOON ,  LIAO RU LING ,  TEO HAN BOON ,  LI JING YA ,  NISHI TAKAHIRO ,  ABE KIYOFUMI ,  KANOH RYUICHI ,  TOMA TADAMASA

IPC: H04N19/119 ,  H04N19/157 ,  H04N19/176

Abstract: A coding device (100) for coding a block to be coded included in a picture is provided with a circuit and a memory. The circuit divides the block to be coded into a first sub-block, a second sub-block, and a third sub-block in a first direction using the memory, the second sub-block being located between the first sub-block and the third sub-block, prohibits the second sub-block from being divided into two partitions in the first direction, and codes the first sub-block, the second sub-block, and the third sub-block.

公开(公告)号：CA3069579A1

公开(公告)日：2019-01-17

申请号：CA3069579

申请日：2018-07-11

Applicant: PANASONIC IP CORP AMERICA

Inventor： OHKAWA MASATO ,  SAITOU HIDEO ,  TOMA TADAMASA ,  NISHI TAKAHIRO ,  ABE KIYOFUMI ,  KANOH RYUICHI

IPC: H04N19/124

Abstract: A coding device (100) for coding a block to be coded of a picture is provided with a circuit and a memory, wherein the circuit generates a first transformation coefficient using the memory by performing a first transformation on a residual signal of the block to be coded using a first transformation base, generates a second transformation coefficient by performing a second transformation on the first transformation coefficient using a second transformation base when the first transformation base matches a predetermined transformation base, quantizes the second transformation coefficient, and quantizes the first transformation coefficient without performing the second transformation when the first transformation base differs from the predetermined transformation base.

公开(公告)号：PH12017500584B1

公开(公告)日：2017-08-30

申请号：PH12017500584

申请日：2017-03-30

Applicant: PANASONIC IP CORP AMERICA

Inventor： YAHATA HIROSHI ,  TOMA TADAMASA

IPC: G11B20/10 ,  G11B20/12 ,  H04N5/85 ,  H04N5/93

Abstract: Recorded in a recording medium are a video stream of standard-luminance range, and a video stream of high-luminance range that is a broader luminance range than the standard-luminance range, which are used selectively in accordance with a playback environment, a subtitle stream of the standard luminance range, and a subtitle stream of the high-luminance range, which are used selectively in accordance with the playback environment, and a playlist file storing playback control information of content, playlist file including a management region where the playback control information relating to a main stream is stored, and an extended region. The management region stores first playback control information specifying that a video stream of the high-luminance range and a subtitle stream of the high-luminance range are to be played in combination. The extended region stores second playback control information specifying that a video stream of the standard-luminance range and a subtitle stream of the standard-luminance range are to be played in combination.

公开(公告)号：CA2962909A1

公开(公告)日：2016-04-21

申请号：CA2962909

申请日：2015-10-01

Applicant: PANASONIC IP CORP AMERICA

Inventor： YAHATA HIROSHI ,  TOMA TADAMASA

IPC: G11B20/12 ,  G11B20/10 ,  H04N5/85 ,  H04N5/93

Abstract: Provided is a recording medium in which the following are recorded: a video stream in a standard brightness range and a video stream in a high brightness range that is wider than the brightness range of the standard brightness range, said video streams being used selectively in accordance with the reproduction environment; a subtitle stream in a standard brightness range and a subtitle stream in a high brightness range, said subtitle streams being used selectively in accordance with the reproduction environment; and a playlist file in which content reproduction control information is stored, said playlist file comprising a management area in which reproduction control information relating to a main stream is stored and an extension area. First reproduction control information specifying that the video stream in the high brightness range and the subtitle stream in the high brightness range are to be combined and reproduced is stored in the management area and second reproduction control information specifying that the video stream in the standard brightness range and the subtitle stream in the standard brightness range are to be combined and reproduced is stored in the extension area.

公开(公告)号：CA2944869A1

公开(公告)日：2016-03-17

申请号：CA2944869

申请日：2015-08-17

Applicant: PANASONIC IP CORP AMERICA

Inventor： YAHATA HIROSHI ,  TOMA TADAMASA

IPC: G11B20/10 ,  G11B20/12 ,  G11B27/00

Abstract: A recording medium according to an embodiment of the present disclosure has recorded thereon a main video stream in which a main video is encoded and a sub-video stream in which a sub-video displayed so as to be overlapped with the main video is encoded. The sub-video stream includes bitmap data indicating the pattern of the sub-video and pallet data specifying the colors displayed in the pattern. The pallet data includes first pallet data for a first brightness dynamic range (SDR) and second pallet data for a second brightness dynamic range (HDR) greater than the first brightness dynamic range.