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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
发明人： Tadamasa TOMA , Masayuki KOZUKA , Hiroshi YAHATA , Takahiro NISHI , Kengo TERADA
CPC分类号： H04N9/8715 , G06F3/14 , G11B20/10 , H04N7/0125 , H04N7/015 , H04N9/642 , H04N9/87 , H04N11/002 , H04N21/431
摘要： 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
发明人： Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI , Tadamasa TOMA
CPC分类号： H04N5/57 , G06F3/14 , G09G5/10 , G09G2320/0276 , G09G2370/04 , H04N5/20 , H04N5/76 , H04N7/01 , H04N7/0125 , H04N7/015 , H04N9/7925 , H04N9/87
摘要： 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：US20170237932A1
公开(公告)日：2017-08-17
申请号：US15583050
申请日：2017-05-01
发明人： Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI , Tadamasa TOMA
CPC分类号： H04N5/57 , G06F3/14 , G09G5/10 , G09G2320/0276 , G09G2370/04 , H04N5/20 , H04N5/76 , H04N7/01 , H04N7/0125 , H04N7/015 , H04N9/7925 , H04N9/87
摘要： 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：US20170207869A1
公开(公告)日：2017-07-20
申请号：US15478387
申请日：2017-04-04
发明人： Noritaka IGUCHI , Tadamasa TOMA
IPC分类号： H04H60/40 , H04N21/236 , H04N21/434 , H04N21/2389 , H04N21/63 , H04H20/95 , H04N21/643
CPC分类号： H04H60/40 , H04H20/95 , H04N21/23605 , H04N21/23611 , H04N21/23614 , H04N21/23892 , H04N21/434 , H04N21/631 , H04N21/64322
摘要： A transmission method according to one aspect of the present disclosure is a transmission method for transmitting content through broadcasting, including: generating a plurality of frames for transfer, each of which includes a plurality of first transfer units in which the content is to be stored, each of the plurality of frames having a fixed length, each of the plurality of first transfer units having a variable length; and transmitting the plurality of frames generated. The generating includes sequentially placing the plurality of first transfer units into the plurality of frames, and in the placing, even when a data size of a current first transfer unit to be processed is smaller than a remaining capacity of a current frame to be processed, the current first transfer unit is placed into a next frame.
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公开(公告)号：US20230156148A1
公开(公告)日：2023-05-18
申请号：US18100114
申请日：2023-01-23
发明人： Tadamasa TOMA , Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI
IPC分类号： H04N7/01 , G06F3/14 , G09G5/10 , H04N5/20 , H04N23/71 , H04N23/76 , H04N7/015 , H04N9/64 , H04N21/462 , H04N11/20 , G06T5/00 , G09G5/02
CPC分类号： H04N7/0125 , G06F3/14 , G09G5/10 , H04N5/20 , H04N23/71 , H04N23/76 , H04N7/01 , H04N7/015 , H04N9/642 , H04N21/4621 , H04N9/64 , H04N11/20 , G06T5/009 , G09G5/026 , G09G2320/0276 , G09G2370/04
摘要： 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：US20220191425A1
公开(公告)日：2022-06-16
申请号：US17682139
申请日：2022-02-28
发明人： Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI , Tadamasa TOMA
IPC分类号： H04N5/57 , G06F3/14 , H04N5/76 , H04N7/01 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/79 , H04N9/87
摘要： 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：US20220159264A1
公开(公告)日：2022-05-19
申请号：US17592879
申请日：2022-02-04
发明人： Tadamasa TOMA , Masayuki KOZUKA , Takahiro NISHI , Kengo TERADA
IPC分类号： 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
摘要： 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：US20220086510A1
公开(公告)日：2022-03-17
申请号：US17536359
申请日：2021-11-29
发明人： Tadamasa TOMA , Takahiro NISHI , Noritaka IGUCHI
IPC分类号： H04N21/2343 , H04N21/485 , H04N21/236 , H04N21/234 , H04N21/4402 , H04N21/434 , H04N19/89 , H04N19/30 , G06T5/00
摘要： 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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公开(公告)号：US20210075995A1
公开(公告)日：2021-03-11
申请号：US16950261
申请日：2020-11-17
发明人： Kengo TERADA , Masayuki KOZUKA , Takahiro NISHI , Tadamasa TOMA
IPC分类号： H04N5/57 , G06F3/14 , H04N5/76 , H04N7/01 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/79 , H04N9/87
摘要： 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：US20190238814A1
公开(公告)日：2019-08-01
申请号：US16381812
申请日：2019-04-11
发明人： Masayuki KOZUKA , Takahiro NISHI , Kengo TERADA , Tadamasa TOMA
IPC分类号： H04N9/64 , H04N11/24 , H04N5/202 , H04N9/87 , H04N21/4402 , H04N21/4363 , G11B27/00 , G06T5/00 , H04N21/431 , H04N21/45 , H04N21/435 , G09G5/10 , G09G5/00 , H04N21/234
摘要： In a reproduction method, a video stream has a first dynamic range where a maximum value of a luminance dynamic range is more than a predetermined luminance value, and a display apparatus displays video in a second dynamic range narrower than the first dynamic range. The reproduction method displays video based on a first reproduction signal or a second reproduction signal. The first reproduction signal is obtained by: reproducing a first video stream quantized based on a hybrid OETF without performing luminance conversion; or reproducing the first video stream subjected to the luminance conversion. The second reproduction signal is obtained by performing the luminance conversion on a second video stream not quantized based on the hybrid OETF, and reproducing the second video stream subjected to the luminance conversion.
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