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公开(公告)号：US11812049B2
公开(公告)日：2023-11-07
申请号：US18065977
申请日：2022-12-14
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: H04N19/51 , H04N19/176 , H04N19/182
CPC classification number: H04N19/51 , H04N19/176 , H04N19/182
Abstract: An encoder includes circuitry and a memory coupled to the circuitry, wherein the circuitry, in operation, performs a partition process. The partition process includes calculating first values of a set of pixels between a first partition and a second partition in a current block, using a first motion vector for the first partition; calculating second values of the set of pixels, using a second motion vector for the second partition; and calculating third values of the set of pixels by weighting the first values and the second values. When a ratio of a width to a height of the current block is larger than 4 or a ratio of the height to the width of the current block is larger than 4, the circuitry disables the partition process.
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公开(公告)号：US11800093B2
公开(公告)日：2023-10-24
申请号：US17350640
申请日：2021-06-17
Inventor： Masato Ohkawa , Hideo Saitou , Tadamasa Toma , Takahiro Nishi , Kiyofumi Abe , Ryuichi Kanoh
IPC: H04N19/11 , H04N19/159 , H04N19/176 , H04N19/61 , H04N19/625
CPC classification number: H04N19/11 , H04N19/159 , H04N19/176 , H04N19/61 , H04N19/625
Abstract: An encoder that encodes a current block in a picture includes circuitry and memory. Using the memory, the circuitry: determines whether to use intra prediction for the current block; and when determining to use intra prediction, (i) performs a first transform on a residual signal of the current block using a first transform basis to generate first transform coefficients; and (ii-1) performs a second transform on the first transform coefficients using a second transform basis to generate second transform coefficients and quantizes the second transform coefficients, when an intra prediction mode of the current block is a predetermined mode or when the first transform basis is same as a predetermined transform basis; and (ii-2) quantizes the first transform coefficients without performing the second transform when the intra prediction mode is different from the predetermined mode and the first transform basis is different from the predetermined transform basis.
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公开(公告)号：US11792396B2
公开(公告)日：2023-10-17
申请号：US17689421
申请日：2022-03-08
Inventor： Sughosh Pavan Shashidhar , Hai Wei Sun , Chong Soon Lim , Ru Ling Liao , Han Boon Teo , Jing Ya Li , Takahiro Nishi , Kiyofumi Abe , Ryuichi Kanoh , Tadamasa Toma
IPC: H04N19/119 , H04N19/176 , H04N19/423 , H04N19/63
CPC classification number: H04N19/119 , H04N19/176 , H04N19/423 , H04N19/63
Abstract: An encoder that encodes a current block in a picture includes circuitry and memory. Using the memory, the circuitry: splits the current block into a first sub block, a second sub block, and a third sub block in a first direction, the second sub block being located between the first sub block and the third sub block; prohibits splitting the second sub block into two partitions in the first direction; and encodes the first sub block, the second sub block, and the third sub block.
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公开(公告)号：US11770561B2
公开(公告)日：2023-09-26
申请号：US17971817
申请日：2022-10-24
Inventor： Masato Ohkawa , Hideo Saitou , Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma , Yusuke Kato
IPC: H04N19/112 , H04N19/12 , H04N19/16 , H04N19/186 , H04N19/60 , H04N19/119 , H04N19/17 , H04N19/184 , H04N19/30
CPC classification number: H04N19/649 , H04N19/112 , H04N19/119 , H04N19/12 , H04N19/16 , H04N19/17 , H04N19/184 , H04N19/186 , H04N19/30
Abstract: Provided is an encoder including: circuitry; and memory coupled to the circuitry. In operation, the circuitry: performs a mapping process of Luma Mapping with Chroma Scaling (LMCS) for transforming a first pixel value space applied to a luma display image signal into a second pixel value space applied to a luma encoding process signal, using line segments forming a transform curve, each of which corresponds to a different one of sections obtained by partitioning the first pixel value space; and encodes an image, and in the performing of the LMCS, the circuitry determines the transform curve so that among boundary values in the second pixel value space, a first value obtained by dividing a boundary value by a base width defined according to a bit depth of the image is not equal to a second value obtained by dividing another boundary value by the base width.
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公开(公告)号：US11758201B2
公开(公告)日：2023-09-12
申请号：US17709785
申请日：2022-03-31
Inventor： Noritaka Iguchi , Tadamasa Toma
IPC: H04N21/231 , H04N21/43 , H04L65/611 , H04H60/40 , H04J3/06 , H04N21/234 , H04N21/235 , H04N21/2365 , H04N21/434 , H04N21/63 , H04N21/845
CPC classification number: H04N21/231 , H04H60/40 , H04J3/0661 , H04L65/611 , H04N21/234 , H04N21/235 , H04N21/2365 , H04N21/4347 , H04N21/43072 , H04N21/631 , H04N21/8456
Abstract: A transmitting method stores data making up a coded stream into a predetermined data unit and transmits the stored data in the predetermined data unit. The transmitting method further generates presentation time information indicating a presentation time of the predetermined data unit, based on reference time information received from an external source; and transmits the predetermined data unit, first control information which includes the generated presentation time information, and second control information which includes leap second information indicating whether or not the presentation time information is a time that is before a leap second adjustment. A receiving method receives the predetermined data unit, first control information, and second control information; and reproduces the received predetermined data unit based on the first and second control information that are received.
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Patent Agency Ranking
公开(公告)号：US11758185B2
公开(公告)日：2023-09-12
申请号：US17379327
申请日：2021-07-19
Inventor： Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma , Ryuichi Kanoh
IPC: H04N19/159 , H04N19/593 , H04N19/44 , H04N19/176
CPC classification number: H04N19/593 , H04N19/176 , H04N19/44
Abstract: An encoder includes circuitry and memory. The circuitry, using the memory: prohibits a first splitting method when arrangement and shapes of blocks obtained by splitting a first block multiple times by the first splitting method are identical to arrangement and shapes of blocks obtained by splitting the first block multiple times by a second splitting method different from the first splitting method, and when scan order of the blocks obtained by the first splitting method is identical to scan order of the blocks obtained by the second splitting method; and encodes the first block.
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公开(公告)号：US11758166B2
公开(公告)日：2023-09-12
申请号：US17468383
申请日：2021-09-07
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
CPC classification number: H04N19/44 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/521
Abstract: An image decoder includes circuitry and a memory, wherein the circuitry, in operation, determines whether inter prediction is to be applied to a current block; in response to determining that the inter prediction is to be applied to the current block, performs a partition prediction process; and, in response to determining that the inter prediction is not to be applied, decodes 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 values and the weighted second values.
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公开(公告)号：US11741717B2
公开(公告)日：2023-08-29
申请号：US17126919
申请日：2020-12-18
Inventor： Takahiro Nishi , Tadamasa Toma , Toshiyasu Sugio
CPC classification number: G06V20/56 , G06T7/70 , G06T15/20 , G06V10/462 , G06V20/647 , G06T2207/30252
Abstract: A data generator which achieves further improvement includes circuitry and memory connected to the circuitry. The circuitry, in operation: obtains sensing data from each of a plurality of moving bodies that includes a plurality of sensors, the sensing data being configured based on results of sensing by the plurality of sensors; and generates synthesized data by mapping the sensing data of the moving body into a virtual space, and when generating the synthesized data, determines a position of the sensing data to be mapped into the virtual space, based at least on a position of the moving body in a real space corresponding to the sensing data.
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公开(公告)号：US11710271B2
公开(公告)日：2023-07-25
申请号：US17021188
申请日：2020-09-15
Inventor： Toru Matsunobu , Takahiro Nishi , Tadamasa Toma , Toshiyasu Sugio , Satoshi Yoshikawa , Tatsuya Koyama
CPC classification number: G06T15/08 , G06T7/50 , G06T9/00 , G06T17/00 , G06T2207/10028 , G06T2207/20221 , G06T2207/30252 , G06T2210/08 , G06T2210/56 , H04L67/12
Abstract: A three-dimensional data creation method includes: creating first three-dimensional data from information detected by a sensor; receiving encoded three-dimensional data that is obtained by encoding second three-dimensional data; decoding the received encoded three-dimensional data to obtain the second three-dimensional data; and merging the first three-dimensional data with the second three-dimensional data to create third three-dimensional data.
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公开(公告)号：US11678009B2
公开(公告)日：2023-06-13
申请号：US17716212
申请日：2022-04-08
Inventor： Peter Klenner , Frank Herrmann , Tadamasa Toma
IPC: G06F3/00 , G06F13/00 , H04N5/445 , H04N21/438 , H04N21/238
CPC classification number: H04N21/438 , H04N21/238 , H04N21/23805
Abstract: A client receives streaming data according to Moving Picture Experts Group-Dynamic Adaptive Streaming over HTTP (MPEG-DASH) standard. The client includes a transmitter which transmits a Media Presentation Description (MPD) request or a segment request to a server, and a receiver which receives an MPD specified in the MPD request and a segment specified in the segment request. The MPD request contains information requesting transmission of an initialization segment by a push. The receiver receives the initialization segment transmitted by the push.
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