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公开(公告)号：US11856200B2
公开(公告)日：2023-12-26
申请号：US17592879
申请日：2022-02-04
Inventor： Tadamasa Toma , Masayuki Kozuka , Takahiro Nishi , Kengo Terada
IPC: H04N19/136 , H04N19/85 , H04N21/84 , H04N19/44 , H04N19/46 , H04N19/70 , H04N7/08 , H04N5/57 , H04N21/41 , H04N21/4363 , H04N21/462 , H04N21/4402 , H04N21/63 , H04N7/025 , H04N21/436 , H04N21/61
CPC classification number: H04N19/136 , H04N7/0255 , H04N7/08 , H04N19/44 , H04N19/46 , H04N19/70 , H04N19/85 , H04N21/4122 , H04N21/43635 , H04N21/4402 , H04N21/4621 , H04N21/4622 , H04N21/631 , H04N21/84 , H04N5/57 , H04N21/43615 , H04N21/6112
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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公开(公告)号：US11290676B2
公开(公告)日：2022-03-29
申请号：US16950261
申请日：2020-11-17
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC: H04N5/57 , G06F3/14 , H04N7/01 , G09G5/10 , H04N7/015 , H04N9/79 , H04N5/76 , H04N5/20 , 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：US11233969B2
公开(公告)日：2022-01-25
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：US11115616B2
公开(公告)日：2021-09-07
申请号：US16921218
申请日：2020-07-06
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：US10291881B2
公开(公告)日：2019-05-14
申请号：US15367227
申请日：2016-12-02
Inventor： Tadamasa Toma , Kengo Terada , Masayuki Kozuka , Takahiro Nishi
IPC: H04N7/01 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/64 , H04N21/462 , G06F3/14 , 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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Patent Agency Ranking
公开(公告)号：US20190141286A1
公开(公告)日：2019-05-09
申请号：US16241141
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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公开(公告)号：US10225513B2
公开(公告)日：2019-03-05
申请号：US15367227
申请日：2016-12-02
Inventor： Tadamasa Toma , Kengo Terada , Masayuki Kozuka , Takahiro Nishi
IPC: H04N7/01 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/64 , H04N21/462 , G06F3/14 , 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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公开(公告)号：US10051233B2
公开(公告)日：2018-08-14
申请号：US15595012
申请日：2017-05-15
Inventor： Tadamasa Toma , Kengo Terada , Masayuki Kozuka , Takahiro Nishi
IPC: H04N7/01 , H04N7/015 , H04N9/64 , G06F3/14 , H04N21/462
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：US09794539B2
公开(公告)日：2017-10-17
申请号：US15226136
申请日：2016-08-02
Inventor： Masayuki Kozuka , Takahiro Nishi , Kengo Terada , Tadamasa Toma
IPC: H04N9/64 , G09G5/00 , G09G5/10 , H04N21/431 , H04N9/87 , H04N11/24 , H04N21/234 , G06T5/00 , H04N21/435 , H04N21/45 , G11B27/00 , H04N5/202
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 includes: determining whether the first video stream is quantized based on a hybrid OETF; (i) when it is determined that the first video stream is quantized based on the hybrid OETF, reproducing the first video stream; and (ii) when it is determined that the first video stream is not quantized based on the hybrid OETF, converting a luminance dynamic range of the first video stream from the first dynamic range to the second dynamic range to obtain a second video stream, and reproducing the second video stream.
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公开(公告)号：US11974070B2
公开(公告)日：2024-04-30
申请号：US18100114
申请日：2023-01-23
Inventor： Tadamasa Toma , Kengo Terada , Masayuki Kozuka , Takahiro Nishi
IPC: H04N7/01 , G06F3/14 , G06T5/92 , G09G5/02 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/64 , H04N11/20 , H04N21/462 , H04N23/71 , H04N23/76
CPC classification number: H04N7/0125 , G06F3/14 , G06T5/92 , G09G5/026 , G09G5/10 , H04N5/20 , H04N7/01 , H04N7/015 , H04N9/64 , H04N9/642 , H04N11/20 , H04N21/4621 , H04N23/71 , H04N23/76 , G09G2320/0276 , G09G2370/04
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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