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公开(公告)号：US20210067729A1
公开(公告)日：2021-03-04
申请号：US17098725
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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公开(公告)号：US20200252582A1
公开(公告)日：2020-08-06
申请号：US16854200
申请日：2020-04-21
Inventor： Tadamasa TOMA , Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI
IPC: H04N7/01 , G09G5/02 , G06T5/00 , H04N5/243 , H04N5/235 , H04N11/20 , H04N9/64 , H04N21/462 , H04N7/015 , H04N5/20 , G09G5/10 , G06F3/14
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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公开(公告)号：US20200045281A1
公开(公告)日：2020-02-06
申请号：US16600764
申请日：2019-10-14
Inventor： Masayuki KOZUKA , Takahiro NISHI , Kengo TERADA , Tadamasa TOMA
IPC: H04N9/64 , G11B27/00 , G06T5/00 , H04N21/234 , H04N9/87 , H04N21/431 , G09G5/10 , G09G5/00 , H04N21/4402 , H04N21/4363 , H04N5/202 , H04N21/45 , H04N21/435 , H04N11/24
Abstract: In a reproduction technique, a video stream is any of a hybrid stream quantized based on a hybrid optical-electro transfer function (OETF), a High Dynamic Range (HDR) stream quantized based on a non-hybrid OETF, or a Standard Dynamic Range (SDR) stream quantized based on a non-hybrid OETF. Attribute information is received which indicates whether a display apparatus is configured to display at least one of the HDR stream or the SDR stream. Any one of the hybrid stream, the HDR stream, or the SDR stream is transmitted to the display apparatus, or to a reproduction apparatus to which the display apparatus is connected, based on the attribute information.
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公开(公告)号：US20200014878A1
公开(公告)日：2020-01-09
申请号：US16575633
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：US20190141285A1
公开(公告)日：2019-05-09
申请号：US16241138
申请日：2019-01-07
Inventor： Tadamasa TOMA , Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI
IPC: H04N7/01 , G09G5/02 , H04N11/20 , H04N9/64 , G06T5/00 , G06F3/14 , H04N21/462 , H04N7/015 , H04N5/20 , G09G5/10 , H04N5/243 , H04N5/235
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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Patent Agency Ranking
公开(公告)号：US20180367750A1
公开(公告)日：2018-12-20
申请号：US16111710
申请日：2018-08-24
Inventor： Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI , Tadamasa TOMA
IPC: H04N5/57 , G09G5/10 , H04N9/87 , H04N5/76 , H04N9/79 , H04N7/015 , G06F3/14 , H04N7/01 , H04N5/20
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：US20170272719A1
公开(公告)日：2017-09-21
申请号：US15610991
申请日：2017-06-01
Inventor： Masayuki KOZUKA , Takahiro NISHI , Kengo TERADA , Tadamasa TOMA
IPC: H04N9/64 , G09G5/10 , H04N21/431 , H04N9/87 , H04N21/234 , H04N5/202 , G06T5/00 , H04N21/435 , H04N21/45 , G11B27/00 , G09G5/00 , H04N11/24
CPC classification number: H04N9/646 , G06T5/007 , G09G5/00 , G09G5/10 , G09G2320/0673 , G09G2340/06 , G11B27/00 , H04N5/202 , H04N9/87 , H04N11/002 , H04N21/234 , H04N21/431 , H04N21/4318 , H04N21/435 , H04N21/43635 , H04N21/4402 , H04N21/4516
Abstract: In a reproduction method, a first video stream has a first dynamic range where a maximum value of a luminance dynamic range is more than 100 nits, and a display apparatus displays video in a second dynamic range narrower than the first dynamic range. The method determines whether the first video stream is quantized based on a hybrid OETF. When it is determined that the first video stream is quantized based on the hybrid OETF, the first video stream is reproduced. When it is determined that the first video stream is not quantized based on the hybrid OETF, a luminance dynamic range of the first video stream is converted from the first dynamic range to the second dynamic range to obtain a second video stream, and the second video stream is reproduced.
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公开(公告)号：US20170251168A1
公开(公告)日：2017-08-31
申请号：US15595043
申请日：2017-05-15
Inventor： Tadamasa TOMA , Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI
CPC classification number: H04N7/0125 , G06F3/14 , G06T5/009 , G09G5/026 , G09G5/10 , G09G2320/0276 , G09G2370/04 , H04N5/20 , H04N5/2351 , H04N5/243 , H04N7/01 , H04N7/015 , H04N9/64 , H04N9/642 , H04N11/20 , H04N21/4621
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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公开(公告)号：US20170251166A1
公开(公告)日：2017-08-31
申请号：US15593495
申请日：2017-05-12
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 , H04N11/002 , 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：US20170237933A1
公开(公告)日：2017-08-17
申请号：US15583071
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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