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公开(公告)号：US20250168371A1
公开(公告)日：2025-05-22
申请号：US19027288
申请日：2025-01-17
Inventor： Virginie DRUGEON , Tadamasa TOMA , Takahiro NISHI , Kiyofumi ABE , Yusuke KATO
Abstract: An encoder includes memory and circuitry coupled to the memory. The circuitry is configured to: generate an encoded bitstream that includes a multi-layer structure; and store, in the encoded bitstream, a syntax element having a value indicating that a layer in the multi-layer structure to be output by a decoder is arbitrarily specified, the syntax element defining that at least one layer is to be output from among layers arbitrarily specifiable by the decoder.
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公开(公告)号：US20250159134A1
公开(公告)日：2025-05-15
申请号：US19019741
申请日：2025-01-14
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.
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公开(公告)号：US20250113051A1
公开(公告)日：2025-04-03
申请号：US18979934
申请日：2024-12-13
Inventor： Chong Soon LIM , Hai Wei SUN , Sughosh Pavan SHASHIDHAR , Han Boon TEO , Ru Ling LIAO , Jing Ya LI , Tadamasa TOMA , Takahiro NISHI , Kiyofumi ABE , Ryuichi KANOH
IPC: H04N19/52
Abstract: An encoder which includes circuitry and memory. Using the memory, the circuitry generates a list which includes candidates for a first motion vector for a first partition. The list has a maximum list size and an order of the candidates, and at least one of the maximum list size or the order of the candidates is dependent on at least one of a partition size or a partition shape of the first partition. The circuitry selects the first motion vector from the candidates included in the list; encodes an index indicating the first motion vector among the candidates in the list into the bitstream based on the maximum list size; and generates the predicted image for the first partition using the first motion vector.
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公开(公告)号：US20250106423A1
公开(公告)日：2025-03-27
申请号：US18972693
申请日：2024-12-06
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: H04N19/44 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/513
Abstract: An image encoder includes circuitry and a memory, wherein the circuitry, in operation, obtains a current block from a coding tree unit (CTU); determines whether inter prediction is to be applied to the current block; in response to determining that the inter prediction is to be applied, performs a partition prediction process; and, in response to determining that the inter prediction is not to be applied, encodes the current block without using the partition prediction process. The partition prediction process includes predicting first values of a set of pixels between a first partition and a second partition in the current block, using a first motion vector for the first partition; predicting second values of the set of pixels, using a second motion vector for the second partition; weighting the first values and the second values; and generating a prediction image for the current block using the weighted first and second values.
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公开(公告)号：US20250088699A1
公开(公告)日：2025-03-13
申请号：US18956733
申请日：2024-11-22
Inventor： Tadamasa TOMA , Noritaka IGUCHI , Takahiro NISHI , Hisaya KATOU
IPC: H04N21/43 , H04H20/18 , H04H20/24 , H04H20/93 , H04H60/13 , H04N21/242 , H04N21/462 , H04N21/61 , H04N21/8547
Abstract: A transmitting method for transmitting contents using a broadcast wave and a communication path comprises: including content information in application control information when transmitting the contents using both the broadcast wave and the communication path, the content information being information for synchronizing a content transmitted by using the broadcast wave with a content transmitted by using the communication path at a reception side that receives the contents and being related to the content transmitted by using the communication path; and transmitting the application control information by using at least the broadcast wave in the broadcast wave and the communication path. As a result, a contents transmitting method is provided for enabling a quick access to contents through communication when the contents are reproduced by a combination of broadcast and communication on the receiving side.
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Patent Agency Ranking
公开(公告)号：US20250056027A1
公开(公告)日：2025-02-13
申请号：US18926018
申请日：2024-10-24
Inventor： Chong Soon LIM , Sughosh Pavan SHASHIDHAR , Ru Ling LIAO , Hai Wei SUN , Han Boon TEO , Jing Ya LI , Kiyofumi ABE , Tadamasa TOMA , Takahiro NISHI
IPC: H04N19/44 , H04N19/119 , H04N19/137 , H04N19/159 , H04N19/176
Abstract: An image decoder has circuitry coupled to a memory. The circuitry splits a current image block into a plurality of partitions. The circuitry predicts a first motion vector from a set of uni-prediction motion vector candidates for a first partition of the plurality of partitions, and decodes the first partition using the first motion vector.
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公开(公告)号：US20250039395A1
公开(公告)日：2025-01-30
申请号：US18911807
申请日：2024-10-10
Inventor： Ru Ling LIAO , Chong Soon LIM , Hai Wei SUN , Han Boon TEO , Jing Ya LI , Kiyofumi ABE , Takahiro NISHI , Tadamasa TOMA
IPC: H04N19/137 , H04N19/105 , H04N19/119 , H04N19/132 , H04N19/159 , H04N19/176
Abstract: An image encoder or decoder includes circuitry and a memory coupled to the circuitry. The circuitry, in operation, predicts a first set of samples for a first partition of a current picture with one or more motion vectors including a first motion vector and predicts a second set of samples for a first portion of the first partition with one or more motion vectors from a second partition different from the first partition. The samples of the first set of samples of the first portion of the first partition and of the second set of samples of the first portion of the first partition are weighted. A motion vector for the first portion of the first partition is stored which is based on one or both of the first motion vector and the second motion vector. The first partition is encoded or decoded using at least the weighted samples of the first portion of the first partition.
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公开(公告)号：US20250030869A1
公开(公告)日：2025-01-23
申请号：US18909662
申请日：2024-10-08
Inventor： Ru Ling LIAO , Chong Soon LIM , Hai Wei SUN , Han Boon TEO , Jing Ya LI , Kiyofumi ABE , Takahiro NISHI , Tadamasa TOMA
IPC: H04N19/137 , H04N19/105 , H04N19/119 , H04N19/132 , H04N19/159 , H04N19/176
Abstract: An image encoder or decoder includes circuitry and a memory coupled to the circuitry. The circuitry, in operation, predicts a first set of samples for a first partition of a current picture with one or more motion vectors including a first motion vector and predicts a second set of samples for a first portion of the first partition with one or more motion vectors from a second partition different from the first partition. The samples of the first set of samples of the first portion of the first partition and of the second set of samples of the first portion of the first partition are weighted. A motion vector for the first portion of the first partition is stored which is based on one or both of the first motion vector and the second motion vector. The first partition is encoded or decoded using at least the weighted samples of the first portion of the first partition.
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公开(公告)号：US20240406381A1
公开(公告)日：2024-12-05
申请号：US18799023
申请日：2024-08-09
Inventor： Takahiro NISHI , Tadamasa TOMA , Kiyofumi ABE
IPC: H04N19/105 , H04N19/15
Abstract: An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry switches between storing and not storing of a decoded picture buffer (DPB) parameter related to a DPB in a common header shared between layers in layer groups each including at least one output layer, according to whether or not all the layer groups in a bitstream each include only one layer.
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公开(公告)号：US20240397110A1
公开(公告)日：2024-11-28
申请号：US18795488
申请日：2024-08-06
Inventor： Virginie DRUGEON , Tadamasa TOMA , Takahiro NISHI , Kiyofumi ABE , Yusuke KATO
IPC: H04N19/70 , H04N19/132 , H04N19/167 , H04N19/186
Abstract: An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry determines whether or not a current video to be processed is a progressive video. When it is determined that the current video is a progressive video, the encoder encodes, into a bitstream, one syntax element indicating a chroma location type which is information indicating locations of chroma samples relative to luma samples for a frame included in the current video. When it is determined that the current video is not a progressive video, the encoder encodes two syntax elements into the bitstream, each of which indicates the chroma location type for a different one of fields of two types included in the current video.
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