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公开(公告)号：US20210075993A1
公开(公告)日：2021-03-11
申请号：US16950205
申请日：2020-11-17
Inventor： Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI , Tadamasa TOMA
IPC: H04N5/57 , G06F3/14 , H04N5/76 , H04N7/01 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/79 , 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：US20210067730A1
公开(公告)日：2021-03-04
申请号：US17098732
申请日：2020-11-16
Inventor： Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI , Tadamasa TOMA
IPC: H04N5/57 , G06F3/14 , H04N5/76 , H04N7/01 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/79 , 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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93.发明申请公开(公告)号：US20200351492A1
公开(公告)日：2020-11-05
申请号：US16934235
申请日：2020-07-21
Inventor： Han Boon TEO , Chong Soon LIM , Takahiro NISHI , Kengo TERADA , Tadamasa TOMA
IPC: H04N19/103 , G06N20/00 , H04N19/176 , H04N19/136 , H04N19/82 , H04N19/117 , H04N19/14 , H04N19/11 , H04N19/46
Abstract: To provide an encoding method for reducing deterioration in encoding efficiency when encoding a video/an image by selecting one operation mode out of a number of operation modes. The encoding method includes: extracting one or more features from one or more reconstructed pixel groups; categorizing the one or more reconstructed pixel groups using the extracted one or more features and a first machine learning model; and performing an encoding process on a current block of image samples included in a current picture using a parameter set corresponding to a result of the categorizing, the parameter set being one of a plurality of predefined parameter sets.
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94.发明申请公开(公告)号：US20200344496A1
公开(公告)日：2020-10-29
申请号：US16899914
申请日：2020-06-12
Inventor： Takahiro NISHI , Tadamasa TOMA
IPC: H04N19/98 , H04N21/434 , H04N19/895 , H04N21/431 , H04N21/845 , H04N21/2362 , H04N21/236 , H04N19/136 , H04N19/44 , H04N19/46
Abstract: Provided is a video reception method performed by a video reception apparatus including a display. The video reception method includes: receiving a reception signal multiplexed from video data and audio data; outputting, as first transfer characteristics information, transfer characteristics obtained by demultiplexing the reception signal; outputting, as second transfer characteristics information, transfer characteristics obtained by decoding the video data, the second transfer characteristics information being information for specifying, at frame accuracy, a transfer function corresponding to a luminance dynamic range of the video data; and displaying the video data while controlling a luminance dynamic range of the display at frame accuracy according to the second transfer characteristics information.
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公开(公告)号：US20200221096A1
公开(公告)日：2020-07-09
申请号：US16825575
申请日：2020-03-20
Inventor： Tadamasa TOMA , Masayuki KOZUKA , Takahiro NISHI , Kengo TERADA
IPC: H04N19/136 , H04N19/85 , H04N21/41 , H04N21/4363 , H04N21/462 , H04N21/84 , H04N21/4402 , H04N21/63 , H04N19/44 , H04N19/46 , H04N19/70 , H04N7/025 , H04N7/08
Abstract: A data output apparatus includes: a video decoder that decodes a video stream to generate a first video signal; an external metadata acquisition unit that acquires one or more pieces of metadata corresponding to one or more first conversion modes; an HDR metadata interpreter that interprets one of the one or more pieces of metadata to acquire characteristic data and conversion auxiliary data; a DR converter that supports one or more second conversion modes and performs conversion processing of a luminance range of the first video signal based on the conversion auxiliary data to generate a second video signal; and an HDMI output unit that outputs the second video signal to a display apparatus.
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Patent Agency Ranking
公开(公告)号：US20200014879A1
公开(公告)日：2020-01-09
申请号：US16575701
申请日：2019-09-19
Inventor： Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI , Tadamasa TOMA
IPC: H04N5/57 , G06F3/14 , H04N5/76 , H04N7/01 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/79 , 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：US20180227626A1
公开(公告)日：2018-08-09
申请号：US15946307
申请日：2018-04-05
Inventor： Taiho NAKAZAWA , Noritaka IGUCHI , Tadamasa TOMA
IPC: H04N21/434 , H04H20/30 , H04H20/40 , H04N21/4402 , H04N21/4385 , H04N21/462 , H04N21/433 , H04N21/438 , H04N21/43
CPC classification number: H04N21/4343 , H04H20/30 , H04H20/40 , H04H60/73 , H04N21/4305 , H04N21/433 , H04N21/434 , H04N21/4382 , H04N21/4385 , H04N21/4402 , H04N21/4622
Abstract: A receiving device of the present disclosure includes: a first processor that (i) receives a broadcast signal obtained by modulating multiplexed data including at least first multiplexed data in a first multiplexing format, out of the first multiplexed data and second multiplexed data in a second multiplexing format different from the first multiplexing format, (ii) demodulates the broadcast signal received, and (iii) outputs the multiplexed data obtained as a result of the demodulation; and a converter that (i) converts, into the second multiplexing format, a multiplexing format of the first multiplexed data included in the multiplexed data that has been output, and (ii) outputs converted data obtained as a result of the conversion.
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98.发明申请公开(公告)号：US20180213265A1
公开(公告)日：2018-07-26
申请号：US15933799
申请日：2018-03-23
Inventor： Tadamasa TOMA , Takahiro NISHI , Noritaka IGUCHI
IPC: H04N21/2343 , G06T5/00 , H04N19/30
CPC classification number: H04N21/2343 , G06T5/007 , G06T2207/20208 , H04N19/30 , H04N19/89 , H04N21/23418 , H04N21/23614 , H04N21/4348 , H04N21/4402 , H04N21/4854
Abstract: A video transmission method according to the present disclosure includes: generating a transmission signal including, in a time series, first video data having a first luminance dynamic range and second video data having a second luminance dynamic range wider than the first luminance dynamic range; and transmitting the transmission signal generated. In the generating of the transmission signal, a signal level corresponding to a luminance value is limited to a value lower than a limit value that is predetermined, in a transition period provided for switching from one of the first video data and the second video data to the other.
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99.发明申请公开(公告)号：US20180199412A1
公开(公告)日：2018-07-12
申请号：US15885535
申请日：2018-01-31
Inventor： Virginie DRUGEON , Takahiro NISHI , Tadamasa TOMA
CPC classification number: H05B37/0209 , H02M1/084 , H02M1/14 , H02M2001/0009 , H04N7/0117 , H04N19/70 , H04N19/85 , H04N19/98 , H04N21/2343 , H04N21/236 , H04N21/23614 , H04N21/4345 , H04N21/4402 , H05B33/0815
Abstract: A data generation method is for generating video data that covers a second luminance dynamic range wider than a first luminance dynamic range and has reproduction compatibility with a first device that does not support reproduction of video having the second luminance dynamic range and supports reproduction of video having the first luminance dynamic range, and includes: generating a video signal to be included in the video data using a second OETF; storing, into VUI in the video data, first transfer function information for identifying a first OETF to be referred to by the first device when the first device decodes the video data; and storing, into SEI in the video data, second transfer function information for identifying a second OETF to be referred to by a second device supporting reproduction of video having the second luminance dynamic range when the second device decodes the video data.
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100.发明申请公开(公告)号：US20170279865A1
公开(公告)日：2017-09-28
申请号：US15618803
申请日：2017-06-09
Inventor： Noritaka IGUCHI , Tadamasa TOMA
IPC: H04L29/06 , H04N21/236 , H04N21/434 , H04B7/185
CPC classification number: H04L65/4076 , H04B7/18526 , H04L65/607 , H04L69/22 , H04N21/236 , H04N21/242 , H04N21/4305 , H04N21/434 , H04N21/6193 , H04N21/64322
Abstract: A transmission method includes: generating a frame for transfer which stores one or more first internet protocol (IP) packets storing content, and one or more second IP packets each including reference clock information which indicates a time for a playback of the content; and transmitting the generated frame through broadcasting. In the generating, header compression is performed on the one or more first IP packets and the header compression is not performed on the one or more second IP packets.
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