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公开(公告)号：US20190191140A1
公开(公告)日：2019-06-20
申请号：US16282687
申请日：2019-02-22
Inventor： Tadamasa TOMA , Masayuki KOZUKA , Hiroshi YAHATA , Takahiro NISHI , Kengo TERADA
CPC classification number: H04N9/8715 , G06F3/14 , G11B20/10 , H04N7/0125 , H04N7/015 , H04N9/642 , H04N9/87 , H04N11/24 , H04N21/431
Abstract: A method to be performed by a playback device includes determining whether the playback device has a function for converting first graphics in a second luminance range narrower than a first luminance range to second graphics in the first luminance range, when the playback device has the function, converting the first graphics to the second graphics, and displaying a video in the first luminance range with the second graphics being superimposed on the video, and when the playback device does not have the function, displaying the video with third graphics different from the second graphics being superimposed on the video.
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32.发明申请公开(公告)号：US20180184123A1
公开(公告)日：2018-06-28
申请号：US15735427
申请日：2016-03-18
Inventor： Kengo TERADA , Takahiro NISHI , Tadamasa TOMA , Satoshi YOSHIKAWA
CPC classification number: H04N19/61 , G06T9/002 , H04N19/109 , H04N19/11 , H04N19/117 , H04N19/147 , H04N19/156 , H04N19/17 , H04N19/51 , H04N19/593 , H04N19/70 , H04N19/80 , H04N19/82 , H04N19/85
Abstract: The image encoding method includes: encoding an image including a block by performing, in at least one of intra prediction, inter prediction, and an in-loop filter, a non-linear process by which the input-output relationship becomes non-linear; and encoding an operation parameter of a non-linear filter to be used in the non-linear process.
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33.发明申请公开(公告)号：US20180041767A1
公开(公告)日：2018-02-08
申请号：US15785756
申请日：2017-10-17
Inventor： Satoshi YOSHIKAWA , Hisao SASAI , Kengo TERADA
IPC: H04N19/50 , H04N19/176 , H04N19/182 , H04N19/46
CPC classification number: H04N19/50 , H04N19/176 , H04N19/182 , H04N19/46
Abstract: An image decoding device is provided for decoding a current block in a current coded picture using a coded bitstream. The image decoding device includes a processor and a memory coupled to the processor. The processor of the image decoding device performs operations, including decoding first motion information for the current block from the coded bitstream, and selecting second motion information from a decoded region adjacent to the current block. The processor also performs operations including decoding the current block using the decoded first motion information and the decoded second motion information, and generating a decoded picture using the decoded current block.
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公开(公告)号：US20170272687A1
公开(公告)日：2017-09-21
申请号：US15613494
申请日：2017-06-05
Inventor： Masayuki KOZUKA , Tadamasa TOMA , Kengo TERADA , Takahiro NISHI
CPC classification number: H04N5/57 , G06F3/14 , G09G2360/16 , G09G2370/022 , G09G2370/04 , H04N5/20
Abstract: In a converting method for converting luminance of an input video in order to display the video on a display device, the luminance of the video is a first luminance value in a first luminance range where a maximum luminance value is defined as a first maximum luminance value that exceeds 100 nit. The method includes acquiring a first luminance signal indicating a first luminance value of the video, selecting a luminance converting process to be executed from among a plurality of luminance converting processes based on a reference luminance value corresponding to reference reflectance included in first meta data of the acquired first luminance signal, converting the first luminance value indicated by the acquired first luminance signal into a second luminance value in a second luminance range where a maximum luminance value is defined as a second maximum luminance value that is smaller than the first maximum luminance value and larger than 100 nit based on the selected luminance converting process.
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公开(公告)号：US20170251244A1
公开(公告)日：2017-08-31
申请号：US15593478
申请日：2017-05-12
Inventor： Masayuki KOZUKA , Tadamasa TOMA , Kengo TERADA , Takahiro NISHI
IPC: H04N21/4363 , H04N21/4402 , H04N7/015 , H04N21/835 , H04N5/92 , H04N21/432 , H04N21/4408
CPC classification number: H04N21/43635 , H04N5/92 , H04N7/015 , H04N7/167 , H04N21/4325 , H04N21/4402 , H04N21/440263 , H04N21/4408 , H04N21/835
Abstract: A playback method according to one aspect of the present disclosure is performed by a playback device connected to a display device. The playback method includes obtaining a type of the display device; selecting each of a version of High-Definition Multimedia Interface (HDMI) and a version of High-bandwidth Digital Content Protection (HDCP), according to the obtained type of the display device; obtaining a video signal of content recorded on a recording medium; decoding the obtained video signal; encrypting the decoded video signal using the selected version of HDCP; and outputting the encrypted video signal to the display device using the selected version of HDMI.
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Patent Agency Ranking
公开(公告)号：US20170251190A1
公开(公告)日：2017-08-31
申请号：US15596190
申请日：2017-05-16
Inventor： Tadamasa TOMA , Masayuki KOZUKA , Hiroshi YAHATA , Takahiro NISHI , Kengo TERADA
IPC: H04N9/87 , H04N11/24 , H04N21/431 , G11B20/10
CPC classification number: H04N9/8715 , G06F3/14 , G11B20/10 , H04N7/0125 , H04N7/015 , H04N9/642 , H04N9/87 , H04N11/002 , H04N21/431
Abstract: A method to be performed by a playback device includes determining whether the playback device has a function for converting first graphics in a second luminance range narrower than a first luminance range to second graphics in the first luminance range, when the playback device has the function, converting the first graphics to the second graphics, and displaying a video in the first luminance range with the second graphics being superimposed on the video, and when the playback device does not have the function, displaying the video with third graphics different from the second graphics being superimposed on the video.
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公开(公告)号：US20170237934A1
公开(公告)日：2017-08-17
申请号：US15583090
申请日：2017-05-01
Inventor： Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI , Tadamasa TOMA
CPC classification number: H04N5/57 , G06F3/14 , G09G5/10 , G09G2320/0276 , G09G2370/04 , H04N5/20 , H04N5/76 , H04N7/01 , H04N7/0125 , H04N7/015 , H04N9/7925 , H04N9/87
Abstract: A display system includes a conversion apparatus converting video luminance including a luminance value in a first luminance range and a display apparatus connected thereto and displaying the video. The conversion apparatus includes a first acquisition unit, a first luminance converter, a second luminance converter, a quantization converter, and an output unit outputting a third luminance signal to the display apparatus. The display apparatus includes: a second acquisition unit acquiring the third luminance signal and setting information indicating display settings recommended to the display apparatus in display of the video; a display setting unit setting the display apparatus, using the setting information; a third luminance converter converting a third code value indicated by the third luminance signal into a second luminance value compatible with a second luminance range, using the setting information; and a display controller displaying the video on the display apparatus based on the second luminance value.
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公开(公告)号：US20250047888A1
公开(公告)日：2025-02-06
申请号：US18924514
申请日：2024-10-23
Inventor： Satoshi YOSHIKAWA , Hisao SASAI , Kengo TERADA
IPC: H04N19/50 , H04N19/176 , H04N19/182 , H04N19/46
Abstract: A decoder, encoder, and a recording medium causes a processor to generate a prediction image by an inter prediction process by i) obtaining first information from a bitstream associated with a variable number of feature points of a current block usable in performing an affine prediction, ii) obtaining a flag from the bitstream indicating a first or second value, iii) obtaining second information from the bitstream specifying first points in response to the flag indicating the first value, iv) determining third information provided the first points based on the second information and indicating a difference between coordinate values of a first point and a corresponding second point included in a reference picture, v) generating a prediction image of the current block according to the determined third information, and vi) refraining from obtaining the second information from the bitstream, in response to the flag indicating the second value.
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公开(公告)号：US20220116641A1
公开(公告)日：2022-04-14
申请号：US17558755
申请日：2021-12-22
Inventor： Satoshi YOSHIKAWA , Hisao SASAI , Kengo TERADA
IPC: H04N19/50
Abstract: A decoder includes a memory and a processor coupled to the memory. The processor is configured to obtain first information from a bitstream, the first information indicating a number of first points in a current picture. The processor is also configured to determine second information provided for each of the first points based on the first information, the second information indicating a difference between a coordinate value of a first point and a coordinate value of a corresponding second point, the corresponding second point being included in a reference picture. The processor is further configured to generate a prediction image of a current block by performing an affine prediction according to the determined second information.
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公开(公告)号：US20210409643A1
公开(公告)日：2021-12-30
申请号：US17474404
申请日：2021-09-14
Inventor： Tadamasa TOMA , Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI
IPC: H04N7/01 , G06F3/14 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/64 , H04N21/462 , H04N11/20 , H04N5/235 , H04N5/243 , G06T5/00 , G09G5/02
Abstract: A conversion method for converting luminance of a video, including a luminance value in a first luminance range, to be displayed on a display apparatus includes: acquiring a first luminance signal indicating a code value obtained by quantization of the luminance value of the video; and converting the code value indicated by the acquired first luminance signal into a second luminance value determined based on a luminance range of the display apparatus, the second luminance value being compatible with a second luminance range with a maximum value smaller than a maximum value of the first luminance range and larger than 100 nit. This provides the conversion method capable of achieving further improvement.
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