-
公开(公告)号：US11095883B2
公开(公告)日：2021-08-17
申请号：US17173634
申请日：2021-02-11
Inventor： Tadamasa Toma , Takahiro Nishi , Kiyofumi Abe , Yusuke Kato
IPC: H04N19/105 , H04N19/176 , H04N19/182
Abstract: An encoder includes circuitry and memory connected to the circuitry. The circuitry, in operation: derives, as a first parameter, a total sum of absolute values of sums of horizontal gradient values respectively for pairs of relative pixel positions; derives, as a second parameter, a total sum of absolute values of sums of vertical gradient values respectively for the pairs of relative pixel positions; derives, as a third parameter, a total sum of horizontal-related pixel difference values respectively for the pairs of relative pixel positions; derives, as a fourth parameter, a total sum of vertical-related pixel difference values respectively for the pairs of relative pixel positions; derives, as a fifth parameter, a total sum of vertical-related sums of horizontal gradient values respectively for the pairs of relative pixel positions; and generates a prediction image to be used to encode the current block using the first, second, third, fourth, and fifth parameters.
-
公开(公告)号：US11082750B2
公开(公告)日：2021-08-03
申请号：US16047642
申请日：2018-07-27
Inventor： Noritaka Iguchi , Tadamasa Toma , Hisaya Katou
IPC: H04N21/643 , H04N21/8547 , H04N21/236 , H04N21/434 , H04N21/61
Abstract: A transmission method includes: generating one or more frames for content transfer, each of the frames containing one or more second transfer units, each of the second transfer units being placed at a head within each of the frames and containing one or more first transfer units, each of the first transfer units containing one or more Internet Protocol (IP) packets, each of the first transfer units positioned at a head within each of the frames containing reference clock information indicating time used for reproduction of the content that uses the IP packets in a reception apparatus; and transmitting the one or more frames by broadcast.
-
公开(公告)号：US11070837B2
公开(公告)日：2021-07-20
申请号：US16371691
申请日：2019-04-01
Inventor： Ryuichi Kanoh , Tadamasa Toma , Kiyofumi Abe , Takahiro Nishi
IPC: H04N19/176 , H04N19/124 , H04N19/122 , H04N19/52 , H04N19/44
Abstract: An encoder includes circuitry and memory. Using the memory, the circuitry performs a primary transform on a derived prediction error, performs a secondary transform on a result of the primary transform, quantizes a result of the secondary transform, and encodes a result of the quantization as data of an image. When a current block to be processed has a predetermined shape, the encoder performs the secondary transform using, among secondary transform basis candidates that are secondary bases usable in the secondary transform, only a secondary transform basis candidate having a size that is not largest size containable in the current block.
-
公开(公告)号：US11044491B2
公开(公告)日：2021-06-22
申请号：US16942601
申请日：2020-07-29
Inventor： Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma , Ryuichi Kanoh , Chong Soon Lim , Ru Ling Liao , Hai Wei Sun , Sughosh Pavan Shashidhar , Han Boon Teo , Jing Ya Li
IPC: H04N11/02 , H04N19/52 , H04N19/119 , H04N19/176
Abstract: Provided is an encoder which includes circuitry and memory. Using the memory, the circuitry splits an image block into a plurality of partitions, obtains a prediction image for a partition, and encodes the image block using the prediction image. When the partition is not a non-rectangular partition, the circuitry obtains (i) a first prediction image for the partition using a first motion vector for the partition, (ii) a second motion vector for the partition using the first prediction image, and (iii) a second prediction image for the partition as the prediction image using the second motion vector. When the partition is a non-rectangular partition, the circuitry obtains the first prediction image as the prediction image using the first motion vector, without using the second motion vector.
-
公开(公告)号：US11044476B2
公开(公告)日：2021-06-22
申请号：US17087128
申请日：2020-11-02
Inventor： Tadamasa Toma , Takahiro Nishi , Kiyofumi Abe , Ryuichi Kanoh , Chong Soon Lim , Sughosh Pavan Shashidhar , Ru Ling Liao , Hai Wei Sun , Han Boon Teo , Jing Ya Li
IPC: H04N19/96 , H04N19/176 , H04N19/119 , H04N19/157
Abstract: An encoder partitions into blocks using a set of block partition modes. The set of block partition modes includes a first partition mode for partitioning a first block, and a second block partition mode 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 indicates that the number of partitions is only three. A parameter for identifying the second block partition mode includes a first flag indicating a horizontal or vertical partition direction, and does not include a second flag indicating the number of partitions.
-
Patent Agency Ranking
公开(公告)号：US11019320B2
公开(公告)日：2021-05-25
申请号：US14965900
申请日：2015-12-11
Inventor： Noritaka Iguchi , Tadamasa Toma , Takahiro Nishi , Hisaya Katou
IPC: H04N9/804 , G11B27/10 , G11B27/32 , H04N21/433 , H04N21/845 , H04N5/76
Abstract: A storage method according to one aspect includes: a reception step of receiving a coded stream including a plurality of files that are of a data unit in a predetermined file format; a storage step of storing the received plurality of files of the coded stream in a memory; and a generation step of generating first control information used to play back the stored plurality of files, the first control information correlating the plurality of files. Therefore, the method for storing data in which one coded stream is divided into a plurality of files is provided.
-
公开(公告)号：US10945021B2
公开(公告)日：2021-03-09
申请号：US16706910
申请日：2019-12-09
Inventor： Noritaka Iguchi , Tadamasa Toma
IPC: H04N21/43 , H04N21/2389 , H04N21/8547 , H04N21/2365 , H04N21/845 , H04N21/434 , H04N21/2343 , H04N21/2381 , H04N21/242 , H04N21/633 , H04N21/6332 , H04N21/83
Abstract: A receiving method of receiving a first data unit in which data making up an encoded stream is stored and the first data unit stores a plurality of second data units. The receiving method includes: receiving the first data unit, first time information indicating a presentation time of the first data unit, second time information indicating, together with the first time information, a presentation time or a decoding time of each of the plurality of second data units, and identification information; calculating the presentation time or the decoding time of each of the plurality of second data units using the first time information and the second time information; and correcting the presentation time or the decoding time of each of the plurality of second data units based on the identification information.
-
公开(公告)号：US10812793B2
公开(公告)日：2020-10-20
申请号：US16726370
申请日：2019-12-24
Inventor： Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma , Ryuichi Kanoh
IPC: H04N19/105 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: An encoder includes memory and circuitry. The circuitry, using the memory, (i) selects a mode from among a plurality of modes each for deriving a motion vector, and derives a motion vector for a current block via the selected mode, and (ii) performs inter prediction encoding on the current block, using the derived motion vector, via one of a skip mode and a non-skip mode different from the skip mode. The plurality of modes include a plurality of first modes each for predicting the motion vector for the current block based on an encoded block neighboring the current block without encoding information indicating a motion vector into a stream. When a second mode included in the plurality of first modes is selected, the current block is encoded via the non-skip mode regardless of presence or absence of a residual coefficient.
-
公开(公告)号：US10789988B2
公开(公告)日：2020-09-29
申请号：US15683006
申请日：2017-08-22
Inventor： Hiroshi Yahata , Tadamasa Toma
IPC: H04N5/92 , H04N5/89 , G11B27/28 , G11B20/10 , G11B27/10 , G11B27/32 , H04N5/85 , H04N7/015 , H04N9/804 , H04N9/82 , H04N13/00 , H04N5/917 , H04N5/765
Abstract: At least one video stream that is encoded video information, and a management information file indicating attributes relating to the entire recording medium, are recorded in a recording medium. The management information file includes attribute information indicating whether the dynamic range of luminance of an initial video stream, which is played first out of the at least one video stream when the recording medium is inserted into a playback device, is a first dynamic range, or a second dynamic range that is broader than the first dynamic range.
-
公开(公告)号：US10778358B2
公开(公告)日：2020-09-15
申请号：US16400232
申请日：2019-05-01
Inventor： Noritaka Iguchi , Tadamasa Toma , Hisaya Katou
IPC: H04J3/06 , H04N21/2381 , H04N21/242 , H04N21/434 , H04N21/643 , H04N21/854 , H04L12/741 , H04L29/06
Abstract: A transmission method includes generating one or more frames for content transfer using IP packets, and transmitting the one or more generated frames by broadcast. Each of the one or more frames contains a plurality of second transfer units, each of the plurality of second transfer units contains one or more first transfer units, each of the one or more first transfer units contains at least one of the IP packets, an object IP packet of the IP packets contains first reference clock information indicating time for reproduction of the content in data structure different from MMT packet data structure, the object IP packet being stored in a first transfer unit positioned at a head in the one or more frames, the one or more frames contains control information storing second reference clock information indicating time for reproduction of the content, and header compression processing on the object IP packet is omitted.
-
-
-
-
-
-
-
-
-
Search Results
496
records
(took 0.04 seconds)
