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公开(公告)号：US20210075998A1
公开(公告)日：2021-03-11
申请号：US17099050
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：US20210075996A1
公开(公告)日：2021-03-11
申请号：US16951212
申请日：2020-11-18
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：US20210075994A1
公开(公告)日：2021-03-11
申请号：US16950250
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：US20210067728A1
公开(公告)日：2021-03-04
申请号：US17098712
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：US20200252683A1
公开(公告)日：2020-08-06
申请号：US16857419
申请日：2020-04-24
Inventor： Takahiro NISHI , Tadamasa TOMA
IPC: H04N21/4402 , G06T5/00 , H04N21/2343 , H04N21/235 , H04N21/431 , H04N21/435 , G09G5/10 , H04N7/01
Abstract: A transmission method in the present disclosure includes; obtaining an image and image signal characteristics information indicating one of an opto-electrical transfer function (OETF) or an electro-optical transfer function (EOTF) as image signal characteristics of the image; and transmitting a signal including the image and the image signal characteristics information. According to the transmission method in the present disclosure, a receiving device that received a high dynamic range (HDR) image and a standard dynamic range (SDR) image transmitted through broadcasting or the like can display these images appropriately.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20200236407A1
公开(公告)日：2020-07-23
申请号：US16841910
申请日：2020-04-07
Inventor： Tadamasa TOMA , Takahiro NISHI , Noritaka IGUCHI
IPC: H04N21/2343 , H04N21/485 , H04N21/236 , H04N21/234 , H04N21/4402 , H04N21/434 , H04N19/89 , H04N19/30 , G06T5/00
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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27.发明申请公开(公告)号：US20190387596A1
公开(公告)日：2019-12-19
申请号：US16557314
申请日：2019-08-30
Inventor： Virginie DRUGEON , Takahiro NISHI , Tadamasa TOMA
IPC: H05B37/02 , H05B33/08 , H04N21/236 , H02M1/14 , H02M1/084 , H04N19/70 , H04N7/01 , H04N21/2343 , H04N19/98 , H04N19/85 , H04N21/434 , H04N21/4402
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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公开(公告)号：US20190313051A1
公开(公告)日：2019-10-10
申请号：US16448480
申请日：2019-06-21
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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29.发明申请公开(公告)号：US20190261487A1
公开(公告)日：2019-08-22
申请号：US16401779
申请日：2019-05-02
Inventor： Virginie DRUGEON , Takahiro NISHI , Tadamasa TOMA
IPC: H05B37/02 , H05B33/08 , H04N21/236 , H02M1/14 , H02M1/084 , H04N19/70 , H04N21/4402 , H04N7/01 , H04N21/2343 , H04N19/98 , H04N19/85 , H04N21/434
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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30.发明申请公开(公告)号：US20190075293A1
公开(公告)日：2019-03-07
申请号：US16086512
申请日：2017-03-23
Inventor： Chong Soon LIM , Takahiro NISHI , Tadamasa TOMA
IPC: H04N19/124 , H04N19/18 , H04N19/61 , H04N19/91 , H04N19/159
Abstract: The encoding method includes: inverse-quantizing one or more first transform coefficients quantized; deriving a quantization parameter based on the one or more first transform coefficients inverse-quantized; and inverse-quantizing a second transform coefficient quantized, based on the derived quantization parameter.
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